Residential | All Things HVAC

Cleaning the AC Coils – 6 Things You Should Know

Cleaning AC coils is one of the most important actions you can take with your air conditioner to keep it from breaking down as fast. If you are attentive to cleaning the AC coils, then it will pay off in the long run because you’ll be less likely to have to try and fix the machine during an emergency situation where it’s 90 degrees outside. You’ll be happy that you did.

Cleaning AC Coils – Things You Should Know

You can tell that cleaning AC coils is important because if you don’t, you end up with a number of issues including ice buildup, the transfer rate of heat tanking, the unit’s capacity for cooling going down, the cost of energy going up, and other issues. The below tips on cleaning AC coils are all designed to help prevent these issues specifically.

1. Prepare Before Going In

You can’t just start cleaning AC coils off the bat without making preparation first. Not only will such an attempt be dangerous, but it will also be inefficient at actually allowing you to clean the coils in a way that will have any kind of significantly positive effects on the overall unit. This means you should start by turning off the air conditioner in general, including at the thermostat level.

You will also want to loosen anything holding the access panel down, such as screws, and then put the screws or fasteners somewhere safe so that you don’t lose track of them. If it’s not obvious where the access panel or screws are, you should check in the manual for the unit in order to properly locate them.

Tip 2: Use Compressed Air

It’s best to use a more professional compressed air machine if you have access to this. But, if not, you may be able to get away with a can of air for smaller jobs. The key is to shoot air across the dirty coil against the normal airflow in the room. This will create enough disturbance to get the dirt and other detritus in the coil to shake loose.

Additionally, you will want to get the top of the compressed air machine close to the parts that aren’t coming loose in order to maximize the amount of pressure that you put on them. It’s also going to be important to try aiming the air at an angle when blowing through the more sensitive parts of the machine in order to avoid damaging it. This can happen if you use too much pressure.

Tip 3: Be Cautious While Using Air

There are a number of dangers to be wary of during the points that you’re blowing air across the coils. For example, there is always the possibility that dirt inside of the coils could ricochet back into your eyes. This is why you should make sure that you wear adequate eye protection, such as heavy goggles. Plus, there’s also the danger that while you’re using compressed air, that you might accidentally blow dirt or other debris off of what part of the coil and deeper into another. This is why there’s a recommendation to use something to clean up after the air compressing part of the cleaning is over, such as vacuuming up everything, for example.

Tip 4: Use No-Rinse Cleaning Fluid

After you’ve thoroughly cleaned the coils with compressed air, you’ll be able to do a more thorough job by using cleaning fluid. This is because the smaller bits of dirt that are loose in the coils will just get in the way of using something more thorough. A common recommendation at this point is to use no-rinse cleaner. You’ll want to cover all of the coils with this and then allow the cleaning fluid to drip down into the condensate pan underneath.

Tip 5: Try Detergent

One option that many people are going to be able to turn to fairly easily when looking for a solution for cleaning AC coils is detergent since not everyone is going to have access to cleaning agents that are considerably stronger than that. If you mix mild detergent and warm water, you can spray it on the coils.

Once this is done, you should just let it stay like that for a minute. It should help knock loose anything that didn’t come off with the other methods. At this point, it would help to just get a cloth and wipe everything down. This should help make the coils nice and clean so that condensation doesn’t form around dirt, causing the usual problems and inefficiencies.

Tip 6: You May Need Extra Help

At some point, you may have to recognize that you can’t do it on your own, based on the situation, and you may need to call in a professional to assist. Examples of when this is the case would be if there is a lot of mold on the coils that does not come off easily. It can actually be dangerous to just allow the mold to stay on such coils because it could be distributed into the air and cause medical problems for people in the house.

It can also be the case that there’s some problem with the coil that requires equipment that people who aren’t HVAC operators would be unlikely to have access to in general.

Summing Up

These tips are all things to keep in mind while you’re cleaning the coils in whatever way is easiest for you. It’s not absolutely necessary to use every single one of the tips, since some of them may work better or worse for you depending on your situation, and some of them may even be irrelevant for your circumstances.

Be sure to add your ideas on this topic where relevant. It can help to get ideas about experiences with cleaning AC coils from others in order to see how things went with them since this can often lead to making you feel better about your own objectives.

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What Is a Capillary Tube? 5 Things to Know

Most people already know that the capillary tubes are what helps the medical technician in a lab draw blood for testing. However, not many realize that same technology is also used in their kitchen refrigerator. A capillary tube is made of ultra-thin, rigid material (plastic or glass) which enables liquid to flow up the tube against gravity. This is called the capillary action. The diameter of the tube governs how high liquid rises. Example, the smaller the inside of the tube, the further up liquid can climb.

What Causes Capillary Action?

Intermolecular forces that naturally occur between liquid and a solid surface are the root of capillary action. If the tube is small enough, the natural cohesion within water causes surface tension. When this tension is combined with the adhesive forces of liquid vs a hard surface capillary action occurs, and water is propelled forward. For a visual example of how a capillary tube works, place a glass tube in a cup of water and watch it rise. Or watch this clip:

Water molecules are sticky. They tend to stay close together (cohesion) and stick to the surface of whatever they touch (adhesion). Simply put, whenever adhesion overcomes cohesion, capillary action occurs. When water molecules stick to the surface of the capillary tube, they exert a pull on the molecules below, and the shorter the distance, the stronger the pull is.

Capillary Tube In Refrigerators and Why It Works

Normally fashioned from copper, capillary tubes are used as throttling devices in major appliances such as refrigerators and A/C units. As the refrigerant leaves the condenser and goes into the capillary tube, it quickly drops in pressure due to the small diameter of the tube. Under normal circumstances, the refrigeration plant experiences a drop in pressure across the capillary. Once the plant stops, the pressure across the two sides of the tube equalize. Then, when the compressor restarts, the load isn’t as heavy.

As a non-adjustable device, you can’t control the flow of refrigerant through the tube like an automatic throttling valve can. This means the refrigerant flowing through the capillary can alternate depending on the changing conditions. For example, the condenser pressure increases right along with the high atmospheric pressure.

The evaporator pressure lowers with a lighter refrigeration load and this changes the flow of liquid through the capillary. In short, the capillary tube is designed to work best under certain conditions, but even so, if selected properly, the capillary tube technology still works well in a variety of conditions.

Things to Remember When Installing Capillary Tubes in Refrigeration Plants

1. Don’t Overcharge the Refrigerant

Since the capillary pressure is equal once the refrigeration unit stops, be careful not to overcharge the refrigerant. Overcharged systems raise the discharge pressure from the compressor and cause overloads. Therefore, knowing exactly how much refrigerant to use is critical.

Brazing a capillary tube to a condenser and its coil is not a job for the inexperienced or non-professionals. With such a small diameter to work with, there is a chance of blockage when you do the brazing deep within the tube.

2. The Value of Accumulators in Refrigeration Systems

The accumulator has a cylindrical shape and they make it by pouring copper into a small hollow vessel. Located between the evaporator and compressor, it has a very important job. It doesn’t always happen, but sometimes the refrigerant that comes out from the evaporator has some liquid particles which the accumulator separates. The liquid refrigerant collected then slowly vaporizes and arrives at the compressor. In case of a drastic drop in evaporator loads, the accumulators also work to prevent the flooding of refrigerant to the compressor.

3. How Does Capillary Tube Blockage Occur?

The inside diameter of a capillary tube is very small. As such, large particles block the tube if they reach it. When this happens, it starves the evaporator, the suction power drops, the refrigerators are less cool, and the compressor needs to work that much harder. The end result increases the head pressure and the possible danger of over-heating. Many blockages occur during the installation or assembly process, but they can also form during normal operation.

You can calculate the blockage in a simple way. Dry nitrogen goes through a new length of capillary tubing at a controlled rate. You can measure the blocked tube for the nitrogen flow using the same technique as for the new tube. All measurements, including diameters, are identical and you can easily determine the degree of blockage by dividing the difference of the flow rate through the cap and then the control tube. See the ASHRAE test method for a more detailed explanation of this procedure.

4. What Happens When Boundary Lubrication is Inadequate?

This situation leads to severe wear on metal and comes from many different causes. Design issues, poor construction, processing chemicals, using lubricant not recommended or metal slag that finds its way inside, all lead to a problem. Using the wrong lubricant, or processing chemicals present which don’t match the refrigeration lube causes the formation of residue which can block a capillary tube completely.

5. Non-Polar Processing Oil vs Polyol Esters and HFC’s

For a long time, CFC’s and mineral oils (both non-polar) played an important role in most refrigeration systems. It didn’t matter if the parts were still dirty after manufacture because non-polar processing oil is soluble in non-polar refrigeration oil. Chemical compatibility problems began with the use of polyol esters and HFC’s. These chemicals do what they must do. However, you should note that the difference in polarity between them and mineral oils could lead to chemical insolubility.

For them to match with HFC refrigerants, people needed to replace the new lubricants with a polar chemical nature for non-polar oils. Extreme temperatures also affect the solubility of chemicals. The evaporator is the coldest area of the system and it’s here incompatible chemicals precipitate. Precipitates manifest as residues and if they find their way into the refrigerant particles accumulation at the cap tube entrance can restrict the flow. You can avoid trouble by completely removing them from the system with a thorough rinse before adding refrigeration oil.

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How to Recharge an AC Unit

Most of the air conditioning units these days are centralized in nature. If you come home after a long day at work or from a walk in broad daylight, it could not get more annoying to see the AC at your place not working or getting charged. There is a complicated phenomenon involving the transfer of heat upon which the air conditioning units function. All of this is facilitated by a refrigerant. And whenever there is a decline in the refrigerant level, it is a clear indication that your centralized AC unit needs a recharge. It happens as the transfer of heat does not occur with low refrigerant levels. That’s why it’s important to learn how to recharge AC unit.

Since the options are plenty in number, it is extremely important that you know the kind of refrigerant the AC unit uses. If you use a wrong combination, it would be worse than having a non-functional air conditioning system. If all of this seems too technical to you, just call in an expert who would get the job done for you. But if you decide to do it yourself, then the following steps could be of great assistance to you.

How to Recharge an AC Unit

Step 1. Locate the Compressor

Almost every air conditioning unit comes with a documented manual for help. If you are not aware where the compressor is, then use the manual and locate it. In its appearance, the compressor looks identical to a metal cylinder. Here, some information on troubleshooting an AC compressor might come in handy if you’re encountering issues with it.

Step 2. See If Everything Works

An important step to remember before adding the coolant is to check if all the remaining components are in a functional condition. It is crucial because if you add the coolant and the root cause is something else, then it would mess up the whole system in a bad way. In that case, you would be looking at not only more effort but also more money to fix it. But once you identified that the cooling agent is the root cause, proceed to step 3.

Step 3. Locate the Service Valve

The next step is to find out where the service valve is. Once you have located it, connect it to the compressor line in the AC unit. If you are not totally sure about this step in how to recharge an AC unit, you might either use instructions on the kit or use some reviewed online resources to complete the task.

Step 4. Locate the Tap Valve

The next step is to locate the tap valve. Use the instruction manual if you have difficulty locating it. Once you find out where the tap valve is, connect it to the remainder of the compressor line.

Step 5. Add Cooling Agent

The next step when learning how to recharge an AC unit is to add the cooling agent to the lines. To accomplish this task, you need to attach the container with the cooling agent to both the valves you installed in the previous steps. In simple terms, the air conditioner will act as a potent force to let the cooling agent (like freon) inside the unit. There will always be an instructional manual and if you encounter any difficulty with anything, follow the instructions.

Step 6. Let the Cooling Agent Flow

At this stage of learning how to recharge an AC unit, you have completed the installation of a brand new refrigerant to the air conditioning unit at your house. For now, just let the free flow of the cooling agent happen. To accomplish this, the only thing you need to do is to set the air conditioning unit at the highest possible setting once you turn it on. This simple step would let the cooling agent into the air conditioning unit while the AC unit gets recharged automatically.

Step 7. Unplug the Cooling Agent and the Valves

Once you identified that the air conditioning unit has consumed all of the cooling agent, then just turn off the ac unit. Finally, you just need to unplug the cooling agent container as well as both the valves.

Safety Precautions

Learning how to recharge an AC unit is a skilled job but it could be risky in some situations. You need to be extra careful while dealing with the refrigerant because of its toxic nature. If by any chance you inhale it, it might have serious repercussions on your health. Even while performing a simple task of checking the older refrigerant or removing it, cover yourself appropriately with either gloves or mask. It might be a bit inconvenient, but it will only protect you from any possible reaction.

When you talk about the legality of performing such tasks on the air conditioning units, not all areas are free zones. There are some geographical locations where you need an official license to accomplish the task. Only because most of the refrigerants are available as over the counter products does not imply you could start using it if you decide to purchase one. Do your own diligent research and be very cautious about the state laws where you reside which clarify how to recharge an AC unit.

Conclusion

Even though all of the above tasks could sound very simple in theory, it might not be the case all the time. The reasons for an AC malfunctioning could vary depending on what’s wrong. However, all the detailed steps mentioned above could give you a good head-start to the project.

But if you feel you are not completely sure about how to recharge an AC unit on your own, do not attempt it as it might potentially mess something else in the air conditioning unit. There are plenty of skilled professionals out there. They can do the job for you for a fee while you relax on your couch.

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Trane Air Conditioner Troubleshooting – Common Problems and Solutions

Trane is an HVAC unit reputable for being dependable and the highest in quality. Nevertheless, there may be times when maintenance and troubleshooting become necessary. On the Trane.com website, there is an easy step guide for troubleshooting that you can follow before calling your local Trane Comfort Specialist™ in case there might be a serious problem with your unit. This information will help the Trane Comfort Specialist™ have an idea of what the issue might be beforehand. It is not encouraged to try to maintain your HVAC system yourself, so noting the mentioned symptoms that are stated on the website is the best step to take before calling your Trane Comfort Specialist™ for Trane air conditioner troubleshooting advice.

Common Issues

1. No Cold Air

The possible basis for this problem could be a coil that is congested. To avoid this issue, keep the unit clear of any foliage or debris that might cause a blockage. Another possible cause could be the filter is congested with dirt and dust. Replace the filters regularly. If you are unsure of how often to change your filter or where the filter is located please consult your local Trane Comfort Specialist™ for Trane air conditioner troubleshooting recommendations. Another possibility for no cold air is that your thermostat is not set properly. Try turning the thermostat off and then back on to see if that may help with the issue, then you can set it to the temperature that you desire for your home or business.

2. No Air Movement

A possible reason for no air movement is there blown fuse or an open circuit breaker. It is recommended to change the blown fuse or reset the circuit breaker to possibly fix this issue. Also, check the return grills for obstruction. If you are unsure of how or where to check, please consult your local Trane Comfort Specialist™ for Trane air conditioner troubleshooting advise.

3. System Running Constantly

It is probable that your thermostat is set higher than it should be. It is advised to turn the thermostat off and then back on and then correct it to a level that is comfortable for your home or business.

4. The Drain Pan Is Overflowing

The pan under the unit inside your home or business collects condensation which is supposed to be dispersed into a drainage pipe. If this is the problem, it is possible the electric pump that moves the water has become unplugged or there might be an obstruction in the pipe itself. Please consult your local Trane Comfort Specialist™ Trane air conditioner troubleshooting advises if you need help with this problem.

Tools You’ll Need for the Job

• A battery powered drill – 18 volts minimum is recommended, with two batteries and a charger. A drill usually comes with a Phillips bit, but make sure you buy a 1/4″ hex bit for this is the most common kind of screw that would be used in HVAC repairs.

• Electric tester – with HVAC repairs, you will be working with live electrical power, so its best to have an electrical tester preferably one that can perform multiple functions such as having a multi-meter.

• Screwdrivers – Various sizes and types of screwdrivers will always is considered valuable. Screwdrivers with protected handles are the greatest choice so to make sure you are safe from electrical shock.

• Hex head nut drivers – Most HVAC systems are built and installed with hex-head screws and bolts. Three sizes are most common: 1/4″, 3/8″, and 5/16″.

Furnace Troubleshooting

1. Make Sure the Thermostat Is Set on Heat

It’s possible not to have the thermostat set properly so make sure to set it at a temperature that will turn the furnace on.

2. Check If the Filter Is Clean

A congested filter will limit the airflow of the furnace and although it will continue to run, it will run with less heat air flow and run less efficient.

3. Change the Thermostat Batteries

Although most thermostats are connected to the electrical system, some use batteries. If you are not sure, please call your local Trane Comfort Specialist™ for Trane air conditioner troubleshooting advise. The ones that do use batteries will flash a low-battery symbol when they need to be replaced.

4. Check the Gas Valve

First, make sure the valve is not set in the off position. If it happens to be on and if you have other appliances that run on gas, check to see if that is working to make sure you don’t have a problem with a gas line. If any of these issues are not easily fixed, please consult your local Trane Comfort Specialist™ for Trane air conditioner troubleshooting advise.

Caution Notes

• One bit of advice is to have a carbon monoxide detector with fresh batteries near the furnace always. Carbon monoxide, which is colorless and odorless can become an issue during repairing and/or maintaining your HVAC system.

• It’s also best to turn off the power switch when performing basic maintenance.

• If you have severe allergies, it is suggested to use permanent HEPA type filters. However, make sure they are cleaned regularly. Another way of controlling the allergens coming into your home or business is covering Trane Comfort Specialist™ for Trane air conditioner troubleshooting advise.

• Cover the duct with a filter. In the past, people have placed a piece of cheesecloth over the ducts, but companies now offer special types of filters that you can Velcro over the duct. Please ask your local Trane Comfort Specialist™ for Trane air conditioner troubleshooting advise about what is offered regarding this type of filter.

Conclusion

A knowledgeable and experienced homeowner in HVAC do it yourself maintenance and repairs will save money with this. They will have a healthier, more comfortable home especially by having the basic facts. It’s important to use these advised troubleshooting steps, as well as know when the issue is beyond your control. This may make you not need the assistance of a Trane Comfort Specialist™.

Are you ready to attempt maintenance on your HVAC system or does it seem it needs repair? Trane offers various ways to discuss or ask questions via their Facebook page, as well as their YouTube channel. There may be some of you who have been very successful in this adventure. In this case, you could share your experiences with others who are contemplating maintenance and repair on their system. Please feel free to do so and by keeping the communications lines open. Your advice may help another homeowner in a way you did not consider.

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White Rodgers Thermostat Troubleshooting – Common Problems and Solutions

Today we are going to have a look at a guide to White Rodgers thermostat troubleshooting. It is advisable that you try the following tips and suggestions before contacting White Rodgers. Please make sure that no matter the instructions, if in fact, it becomes an emergency, then immediately contact White Rodgers troubleshooting and speak to one of their specialists.

For a complete review of this device, don’t forget to check out our dedicated page on the White Rodgers thermostat.

Our Favorite White Rodgers Thermostats

Preview	Product
	White Rodgers Digital Horizontal Heat/Cool Thermostat - 1F78-144	Buy on Amazon
	White Rodgers 1E78-151 Digital 5-Heat 2-Cool Programmable Vertical...	Buy on Amazon

Common Issues

First, make sure that the power supply to your house or business is still on if, in fact, the HVAC is not working at all. This could happen in case of blown fuses or tripped breakers.
Secondly, check the thermostat and see if it has been set to heat. If it is, raise the temperature slightly and you should hear a click sound that is made when the system is turned on. If you don’t hear this sound, it could be possible the batteries need to be changed.
Please make sure you disconnect the wires from terminals R and C before you remove the batteries. If you cannot figure out how to disconnect the wires, please contact White Rogers troubleshooting on their website or contact them by phone. They will help you to disconnect and reconnect the wires properly.
Thirdly, change the thermostat setting to cool. Again, listen for the clicking sound as you lower the temperature slightly and if you do not hear it click on, then check to see if the batteries need to be changed.
Another possible issue could be a short in the wires. Each wire should be checked and there should be no bare wires exposed. If you see this or are unsure of how to fix this issue, please contact the White Rogers troubleshooting specialists preferably by phone in case they may need to send a professional to fix it professionally.

Tool You’ll Need for the Job

Screwdriver – Use it to remove the front face-plate and unscrewing all the fasteners. You can also use it to disconnect the wires.
Cell phone camera – Take a picture of the initial position of the wires to help you place the wires back after replacing a bad wire.
Masking tape – You can use the tape to label the wires to later recognize where their screw-terminal was before disconnecting the wires. The tape is also useful for securing the wires to the wall, avoiding them from sliding into the wall opening.

White Rodgers Digital Horizontal Heat/Cool Thermostat - 1F78-144

1 heat / 1 cool - Single stage
Standard straight cool application
White

Furnace Troubleshooting: White Rodgers Thermostat Reset, Furnace Filter, Gas Valve, Vents

Check the furnace filter – Dust can rapidly block up a filter, which obstructs the flow of air and negatively affects the quality of the indoor air. This can also stop the furnace from turning on and in some cases become hazardous.
Check the thermostat – In some cases, you may just need to replace the batteries. Alternatively, you may need to open the inside housing and clean it from dust and debris.
Check furnace switch and panel – Make sure that you didn’t accidentally turn off the furnace switch. If that is not the case, then check the breaker box to see if the breaker is still in the on position. If it is in the on position and you want to apply a White Rodgers thermostat reset, just turn it off and then back on. You can also turn the switch on the furnace off and then back on as well to see if that fixes the problem. If neither one works, please contact a White Rodgers troubleshooting specialist.
Check the furnace flame – The flame should be a vibrant color blue. If it is not blue, please contact a White Rodgers troubleshooting specialist to send out a professional.
Pilot light or gas valve – If you see that the furnace flame is out, you can relight it. Please consult the owner’s manual before relighting the flame so to follow their instructions precisely for safety reasons.
Front panel – Make sure you shut the front panel securely. Some furnaces will not work unless you do this.
Check vents – Check all the supply and return grills for any obstructions such as furniture, carpets, or anything that could be obstructing the air flow.

Caution Notes

Please ensure that your hands and feet are fully dry before trying any of the advised troubleshooting steps.

If your furnace is 15 years old or more, you may need to replace it. If you are unsure if this is necessary, please contact a White Rodgers troubleshooting specialist and they will be able to look up the model of your current furnace and advise you on what’s the next best step to take.
In the event of changing filters, if you have severe environmental allergies, please wear a mask while changing a filter whether it be for your furnace or HVAC. If you are unsure of what type of filter to use, please contact White Rodgers troubleshooting specialists and they will advise you on which filter is best for your system.

Sale

White Rodgers 1E78-151 Digital 5-Heat 2-Cool Programmable Vertical...

Large easy to read digital display
5/2 day programming for weekday and weekends
Four time and temperture settings per program for heating and cooling.

Conclusion

Emerson Electric Company, the makers of the White Rodgers thermostat, offer user-friendly instructions on troubleshooting and maintaining their thermostat as well as how to program and adjust your thermostats. Furthermore, they offer a download of the manual for the White Rodgers thermostat. Emerson Electric Company has a Facebook page where customers can ask questions and even offer advice for other customers on products and troubleshooting tasks.

How Does a Dehumidifier Work?

When we’re asked how does a dehumidifier work, the questioner is either curious or is really asking why their dehumidifier isn’t working as it should. For both the inquisitive and frustrated, this post explains how a dehumidifier removes excess moisture from the air.

The Steps section below details how a dehumidifier works and includes tips on what to do if it isn’t doing its job. After reading this post, “How does a dehumidifier work,” you’ll both understand the process and how to get maximum benefit from your appliance.

Dehumidifier Steps and Solving Common Problems

Here’s an overview of the process. A dehumidifier works by pulling in moist air and condensing moisture out of it to dry the air. The unit contains tubing filled with refrigerant. The refrigerant is circulated by the compressor first to an evaporator where it collects heat from the air and then to a condenser where heat is squeezed out of it. But heat isn’t the issue. Moisture is.

The purpose of using refrigerant to capture heat from the air around the evaporator is to make the evaporator cold enough for moisture to condense on it. The condensed water drains into a collection bucket or drain tube. Voila, the air is dehumidified! Now, let’s break down “how does a dehumidifier work” steps and solve common dehumidifier problems.

Step 1. The Dehumidifier Pulls in Moist Air

A fan in the dehumidifier pulls humid air into the front of the appliance. If this isn’t happening, the most common problem is that the humidistat, indicating how dry you want the air, is set below the humidity level in the room. Turn it up, like turning up a thermostat until the furnace comes on, to make the dehumidifier start. If you turn it up all the way, and nothing happens:

The collection tank is full, prohibiting the unit from turning on. Check and dump the tank, if needed.
The air is drier than the driest setting on the humidistat, so the compressor won’t start circulating refrigerant.
The fan or electrical components aren’t working and need repair.

Step 2. Refrigerant Captures Heat in the Evaporator

If warm air is being blown out the back of the dehumidifier, it is collecting heat as it should.

If the fan is running, but no heat is being removed from the air:

Your unit might have a continuously running fan, but the humidistat setting is too low to cause the compressor to come on and start circulating refrigerant. Adjust the humidistat to a drier setting.
The dehumidifier might be low on refrigerant, so it’s not collecting heat. It requires repair or replacing.

If the dehumidifier is working, but less effectively than it used to:

The refrigerant might be slowly leaking out, so repair or replacement is needed.
The air filter at the front of the dehumidifier might be dirty, reducing the intake of air. Take it out, and clean it.

Step 3. The Evaporator Gets Cold and Condenses Moisture

If the unit seems to be running normally, but little moisture is being condensed and collected or drained:

Turn up the humidistat until the compressor starts (you might hear it come on)
Check the evaporator, and clean it if it is covered with debris. Dirt prevents heat transfer.
Check to see if the float that descends into the collection tank is stuck in the “up” position that automatically shuts off the compressor to prevent overflow. If it is, gently pull it down, and remove dirt and debris from the float arm to free up its movement.

Step 4. Moisture Drains into the Tank or Drain Hose

If the unit shuts off when the air is still humid:

Empty the tank if it is full
Turn the humidistat to a drier setting

If the dehumidifier leaks:

Check to see if the float is stuck and not rising as the water rises. Turn off the dehumidifier, and gently push the float up. Clear debris from its arm that might be causing it to stick.
The drain hole, if it has one, might be plugged by debris, preventing water from entering the drain line. Search for and clear a clogged drain hole.

Step 5. Warm, Dry Air Comes Out the Back

We addressed a failed fan in Step 1.

If the fan is running, but the airflow seems diminished, clean the air filter.

In case the air coming out is cool, review Steps 2 and 3.

If the air that comes out smells bad:

Clean the filter if it is dirty.
Replace the filter or clean it with an oxygen bleach solution if it is moldy.
Empty the tank, and if it is moldy, clean it with an oxygen bleach solution

Tips for Maximum Dehumidifying

We’ve answered the basic question: “How does a dehumidifier work.” These tips will help you get the most from your unit.

Check the filter every few days, and clean it as needed.
If you have a drain hose attachment option, use it. This allows you to run the dehumidifier continuously. If you collect water in a tank, it will shut off when full, and you might not be able to empty it for hours or days. Simply make sure the hose runs to a floor drain.
Keep doors and windows shut. If humid air from outside continuously flows into space, it will never be dehumidified.
Run a vent hood fan when boiling liquid on the stove and the bathroom exhaust fan when taking a shower to remove humidity.
In warm weather, run a central AC or window unit to assist with dehumidification. Air conditioning uses the same technology, except that an AC moves warm air to the outside of your home while dehumidifying the indoor air.
If the space is below grade and humidity issues persist, contact a foundation specialist about damp-proofing your home’s basement or crawlspace.

Many homes have humidity issues that make them uncomfortable. When humidity leads to mold growth, the homes are unhealthy too. Many of your friends and social media followers probably wonder, “How does a dehumidifier work?” Passing along this post can help them, their families and pets live in a home that is comfortable and healthy.

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Superheat and Subcooling: How to Measure Them

This brief guide explains how to measure superheat and subcooling. As a review, superheat is heat added to the refrigerant above its boiling point/saturation. Subcooling is removing heat from refrigerant below saturation. Measuring the superheating and subcooling of the refrigerant tells you if it is under the proper amount of pressure and can lead to a diagnosis of the refrigerant level and mechanical issues.

Step-by-step instructions on how to calculate superheating and subcooling values plus possible diagnosis using the measurements are included. Furthermore, the tools, tips, and techniques below assist you in streamlining the process for faster maintenance and diagnosis of the problem.

Why You Might Need to Know How to Measure Superheat and Subcooling

Knowing how to calculate superheat and subcooling (aka sub-cooling and subcooling) values is essential to ensuring proper refrigerant charge in air conditioning systems and refrigeration units. The measurements also assist in troubleshooting problems with the equipment. This is important because knowing superheat, subcooling and temperature difference (Delta) across a coil:

Allows an HVACR technician to ensure refrigerant levels are properly maintained for maximum efficiency and performance
Safeguards against improper diagnosis and repair such as diagnosing and replacing the compressor when the problem is something else. That’s a costly but very common mistake.

Tools and Specs to Keep in Mind

The primary tool for the job is a superheat/subcool meter or gauge. They’re produced by many brands in a price range from about $70 to $250. We suggest looking for one with presets for the refrigerants you work with most commonly – R22, R410a (Puron), R134a and R404a, for example. That eliminates the need for inputting the specific refrigerant’s specs.

A handy assistant when converting low-side and high-side pressure to temperatures is a phone app like Emerson’s Check & Charge. The free app is one of many great HVAC troubleshooting apps every tech should have. Its features include superheat (non-TXV) and subcooling (TXV) calculators for R22 and R410A. Check & Charge is available here for iOS and here for Android. A companion to it is the Danfoss Refrigerant Slider with pressure-to-temperature conversions for 80 refrigerants. Those are specs you must know to successfully evaluate the performance of the equipment you’re evaluating.

How to Measure Superheat and Subcooling

Here’s how to determine these values in a few easy steps for each.

Calculating superheat:

Measure the low-side pressure with your gauge.
Convert pressure to temperature with an app, slide or chart.
Next, take the temperature of the suction line where it leaves the condensing unit, though stay 4-6 inches from the compressor.
Use your measurements to determine the amount of superheat. For example, if suction line temperature is 65 degrees and your conversion of the suction pressure to temperatures yields 50 degrees, then the difference is 15 degrees of superheat.

Calculating subcooling:

Measure the high-side pressure with your gauge.
Convert pressure to liquid temperature with an app, slide or chart.
Measure the temperature of the liquid line where it meets the evaporator and before the metering device.
Finally, determine the difference in the temperatures determined in Steps 1 and 2 by subtracting the liquid temperature from the saturation temperature of the refrigerant you’re working with. A difference of 12-15 degrees is standard. For example, if your conversion of pressure to temperature yields 115 degrees for saturation and the liquid line temperature is 100 degrees, that’s 15 degrees of subcooling.

Note: Superheat should be 12-5 degrees in ambient air temperature below 85 and 8-12 degrees in warmer air. Subcooling should be 5-18 degrees, at the high end of that spectrum when the equipment has a TXV. Always go by the manufacturer’s specifications.

Using superheat and subcooling data in troubleshooting:

Low superheat: Too much refrigerant in the evaporator. It’s likely overcharged.
High superheat: Too little refrigerant in the evaporator. This might indicate that the system is low on refrigerant, but it’s just as commonly caused by insufficient heat getting to the evaporator (dirty filter or blower, undersized or blocked ductwork, plugged evaporator coil) or a dirty/defective metering device.

Caution Notes

Don’t try this at home! Diagnosing and repairing air conditioning and refrigeration is one of those jobs experienced DIY homeowners are wise enough to steer clear of. Moreover, working with refrigerant is not a DIY job unless you’re a licensed HVACR technician.

Only licensed techs can legally handle refrigerants. Additionally, overcharging and undercharging a system lead to serious issues with air conditioning and refrigeration equipment. There’s no reason to turn what might be a small problem into a major mechanical failure.

And here’s an important caution: Refrigerant might not be the issue. If you misdiagnose the cause of the problem, your solution won’t work. Consequently, the right approach is to leave the work to an experienced HVAC technician.

Hiring a Pro for your AC or Refrigerant Job

Finally, if this post interested you, it’s possible you ARE an HVACR pro. If so, we hope it was a good refresher in superheat and subcooling basics. We’d enjoy getting your feedback in the Reply box below. If you’re a homeowner diagnosing an AC or refrigerant issue, we’d recommend discussing the issue with a professional.As such, look for one certified by N.A.T.E., the North American Technician Excellence. The organization provides the most broadly respected training, testing, and certification for professionals in the HVACR industry. If you’re a hands-on homeowner that likes to know what the issue is, so you can fix it yourself or knowledgeably discuss it with a pro, you probably know other homeowners who feel the same. In the end, perhaps they’d benefit from this information on superheating and subcooling, so feel free to share!

Image source: depositphotos.com

Day and Night Air Conditioner Reviews: Pros, Cons, Performance

What all consumers should know when reading Day and Night air conditioner reviews is that Day and Night and Carrier, one of the most well-known AC brands, are both under the same parent company, which is United Technologies. So yes, they are considered competing brands, and although entirely different, some components may be similar as both brands undergo the same quality control procedures.

Day and Night HVAC

However, consider this write-up will focus entirely on Day and Night — what it offers, pros and cons, and if it’s the HVAC system you’re looking for.

Day and Night Air Conditioner Overview

Many Day and Night air conditioner reviews state that the brand’s line of ACs are mainly for residential use, but its models actually work in the light commercial market as well. Its line of air conditioners are all Energy Star certified and one can choose from 13 SEER models all the way to 19 SEER.

As of writing, Day and Night’s models include Day and Night Performance, Day and Night Constant Comfort, and Day and Night Constant Comfort Deluxe.

Day and Night Air Conditioner Technical Specifications

Day and Night Performance

Resistant to corrosion
Has a warranty of 10 years (specific parts)
Single-stage compressor
Has a noise range of 70 Db
13 to 16 SEER

Day and Night Constant Comfort

Wi-Fi enabled
Has a warranty of 10 years (specific parts)
Includes a limited replacement warranty of five years
Resistant to corrosion
Single-stage compressor
13 to 16 SEER

Day and Night Constant Comfort Deluxe

Has a warranty of 10 years (specific parts)
Includes a limited replacement warranty of 10 years years
Wi-Fi enabled
Has a noise range of 66 to 70 Db
Double-stage operation
Resistant to corrosion
17 to 19 SEER

What most Day and Night air conditioner reviews fail to note is that the company is very vocal about its Matching System, wherein it assesses the hotspots in your home. This will create product combinations to bring out the maximum comfort and at the same time operate in a way that homeowners won’t have to pay for extremely pricey monthly bills.

Authorized dealers may also be of help and can guide would-be buyers on which Day and Night air conditioner currently suits the environment of the house. It should be noted that Day and Night offers heaters as well, and most of its cooling systems are often work better if paired with the company’s gas furnaces.

PROs and CONs of Day and Night Air Conditioners

PROs

Some models include a limited warranty of 10 years on all parts, of which includes the compressor
Almost all models can match with the brand’s own heating equipment to make the HVAC system more efficient
Select cooling systems can be accessed remotely via Wi-Fi
You can choose between single-staged and double-staged fan motors
The brand’s system has a modulating operation of up to five stages
Day and Night air conditioning systems operate quietly

Day and Night air conditioner reviews claim that its entire line of products are run tested each to offer homeowners an energy efficient cooling systems, as well as heating systems. The company also offers warranties, or what it calls “No Hassle Replacement™” that promises replacement of parts, including the compressor, should it malfunctions.

However, owners of a Day and Night airconditioning unit should be aware that it should be registered first. If not, the warranty period will be cut to five years instead of 10. The company provides a certificate for each unit purchased.

CONs

Select units with two-stage compressors have the tendency to malfunction in the long run

Two-stage systems obviously cost more than those with single stage compressors. Because of the complexity of the technology itself, homeowners would likely find it difficult to maintain their systems. Moreover, the additional cost of double-stage compressors may not be ideal for homeowners with small homes. Typically, one stage systems are enough to make the whole area cooler.

Most Day and Night air conditioner reviews note that problems encountered with Day and Night systems are a result of improper installation. Given all products have drawbacks of their own, consumers must be wary of HVAC technicians who aren’t totally cut for the job. People tend to go with the most affordable technicians they can find, only to end up with an improperly installed Day and Night air conditioner. Make sure you get the best contractor as it will actually help you save more in the long run.

Things to Consider Before Purchasing a Day and Night Air Conditioner

With technology improving each day, consumers now have the option to purchase AC units integrated with intelligent cooling technology. Day and Night units use SmartSense technology. This will enable air conditioners to adjust the temperature automatically no matter what the weather is. Alternatively, SmartSense allows owners to adjust home temperatures remotely, so whenever you’re away, you can still adjust your home settings using your very own smartphone.

Day and Night air conditioner reviews also praise the company’s low noise models. Its AC units are so quiet; homeowners will only hear the fun running, leaving their sleep undisturbed even in high-level settings.

What’s important is, the AC unit needs correct installation in order to deliver the optimum performance without using too much energy.

Day and Night HVAC Conclusion

Day and Night air conditioner reviews overall rate the brand’s equipment a quality product. Sure there are negative reviews, but these mostly come from users who had their units not put up properly. The company is quickly becoming a competitor against other more favorite brands. Its line of HVAC systems isn’t exactly what you commonly see in households. However, it won’t take long before people start switching.

Perhaps the lack of back up from a big name contributes to its seemingly “unknown” status, as only a few people know it has the same parent company as Carrier.

Do you own a unit from the brand? It would be great to hear some Day and Night air conditioner reviews from yourself, based on your experience. Or, tell us what you think of its AC units below.

Tempstar Air Conditioner Review: Pros, Cons, Performance

Researching Tempstar central ACs and other brands is easy with our comprehensive air conditioner reviews. This Tempstar air conditioner review includes basic specifications for all models—efficiency and pros and cons. You can also compare with other AC reviews we’ve completed for Carrier, Lennox, Trane, Bryant, Goodman and more.

Temptstar is part of International Comfort Products (ICP). This is a division of Carrier, though models are distinct from Carrier air conditioners. Heil, Arcoaire, KeepRite and ComfortMaker are ICP brands sold nationally or regionally in North America and DO have the same models as Tempstar.

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Tempstar Air Conditioner Brand Overview

Tempstar makes a varied lineup of 12 central air conditioner models, each in sizes up to 60,000BTU/h (aka 5 tons). They are grouped into three series:

Basic: Performance Series (7 models, 13-16 SEER);
Better: QuietComfort Series (3 models, 13-16 SEER);
Best: Deluxe Series (2 models, 17 & 19 SEER).

Our goals are to assist you in selecting an AC that fits your efficiency and performance needs. We also aim to help in deciding if an AC/furnace system or heat pump system is a better option for your specific heating and AC requirements.

Tempstar Air Conditioner Technical Specs

The specifications are where we learn about efficiency and performance to find the best one for our application.

The Deluxe 19 TVA9 is Tempstar’s AC with a variable-speed compressor that modulates between 40% and 100% to deliver just enough cooling to keep your home’s temperature precisely on the thermostat set point (think cruise control);
The Deluxe 17 (TCA7) is Tempstar’s only 2-stage model. So, it runs on low capacity (about 65%) most of the time for quieter cooling with little temperature fluctuation;
The other 10 models are single-stage ACs that run at full capacity with performance that is loud. It also creates slight temperature swings and does not reduce humidity as well as 2-stage and variable-speed models;
Deluxe Series models and the QuietComfort 16 (TSA6) are Tempstar’s only Energy Star-certified models;
Deluxe and QuietComfort Tempstar air conditioner models are supported by the brand’s Wi-Fi Observer control. It allows remote monitoring and adjusting. This is even though Tempstar ACs can work with any brand thermostat that matches single-stage or stage cooling;
Noise limits range from 56dB in the Deluxe 19, considered comparatively quiet, to 76dB in the Performance 16, considered significantly louder than average.

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PROs and CONs of Tempstar Air Conditioners

The public considers ICP brands including Tempstar above average for quality and reliability. However, the quality of the installation plays a major role too. Here are Tempstar AC pros and cons for comparison with other brands on your short list.

Tempstar Air Conditioner PROs

You have fair efficiency and performance options with the lineup from 13-19 SEER and single-stage, two-stage and variable-capacity units;
Tempstar offers warranties that are well-above the industry average. This includes many with 5-year or 10-year unit replacement coverage that provides for a complete new AC/condensing unit if the compressor or coil fail in that time;
The two-speed fan motor on Deluxe models runs more quietly and more efficiently than single-stage fans do;
The Performance 14 NH4A4 Tempstar air conditioner is a compact model ideal for installation in multi-family housing. They also work in residences where distance between houses is narrow and other space-limited locations;
The Performance 13 N4A3**C is durably built and coated for the demands of harsh, seaside climates. But since its efficiency is just 13 SEER, it is not a good fit for warm, humid locations;
Powder-coat finishes are durable and they resist to fading and scratching;
Soft-mounted compressors on Deluxe and QuietComfort Tempstar air conditioner models reduce compressor startup noise;
The four units compatible with the Observer wall control are ideal for those with variable, unpredictable schedules who want the convenience of controlling their HVAC system remotely to reduce energy use and make sure their home is comfortable when they arrive;
Tempstar has a national distribution system, so replacement parts and entire units are readily available throughout North America;
Any professional HVAC technician can service these units.

Tempstar Air Conditioner CONs

The most efficient unit, the 19 SEER TVA9, is significantly less efficient than top models from Lennox (XC25 – 26 SEER), Maytag (PSA4BI – 25.5 SEER) and Amana (AVXCO – 24.5 SEER). So, it isn’t the best choice in climates with extreme heat;
There are 12 Tempstar air conditioner models. Yet, only the top two offer staged cooling with little performance or efficiency difference between the bottom six units;
Air conditioners with sound levels of 74-76 decibels are loud. Six Tempstar ACs are in that range;
Tempstar air conditioner models have competitive prices. But, like most brand ACs, they are only sold through registered dealers. Sp, it requires getting a written estimate to know what the total installation cost will be.

Things to Consider Before Purchasing a Tempstar Air Conditioner

The first consideration is whether a central AC is the right choice for you. In very warm climates where heating is rarely necessary, a heat pump and air handler might keep energy bills lower throughout the year. In very cold climates, a heat pump and gas furnace dual-fuel system is the best path to low energy bills. Tempstar heat pumps are dual-fuel compatible.
If you’re replacing just the AC, then consider efficiency. The warmer and/or more humid your summers are, the higher the unit’s efficiency should be. The one exception might be if you are moving soon and don’t want to pay more for an AC you won’t use for long. But remember that smart buyers will want to know the AC’s efficiency. A very efficient Tempstar air conditioner can be a selling point.
Finally, make sure your AC contractor installs the right size air conditioner. If your home’s insulation, doors or windows have been through an upgrade since the last AC installation, the replacement Tempstar air conditioner should probably be smaller than the last one. A unit that is too large wastes energy. It can also cause temperature swings by over-cooling the space.

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Don’t Forget Quality Installation

Many rigorous tests of air conditioners on the market show that most leading brands, Tempstar included, perform well when after a proper installation. A careless and imprecise process and setup can cause even the very best ACs to run poorly and have mechanical issues early. Get estimates from several local AC companies with a good reputation. Also, make sure the installers are certified, experienced and insured and that their work is backed by a warranty.

Has our Tempstar air conditioner review allowed you to narrow your options for your next AC? Why not help your friends and followers narrow their choices too by sharing this post? Remember to check out all our HVAC reviews to compare brands, HVAC systems, thermostats and more.

Lennox Air Conditioner Reviews: Pros, Cons, Performance, Top Picks

This Lennox AC Guide is a comprehensive review of Lennox air conditioner main models that will assist you in selecting the right unit for your climate and your efficiency and performance preferences.

The pros and cons are a good source of information when comparing Lennox to Amana air conditioners and other top brands we’ve reviewed including:

In 1895, Dave Lennox began manufacturing the first riveted steel furnace in the US. From that innovative start, Lennox has been a leader in residential performance and efficiency. A private company until 1999, Lennox is now a public brand and the parent company of several other HVAC brands. Some of them are Armstrong Air, Air-Ease and Ducane. However, their product lineups are different than Lennox’s.

Lennox Air Conditioner Brand Overview

Like many leading brands, this onemakes basic (Merit Series), better (Elite Series) and best series (Signature Collection) Lennox air conditioners. The differences involve efficiency and performance, the two major factors in how much an air conditioner costs.

The Lennox Signature Collection XC25 is the top pick for this entire brand. Also, it has the distinction of being the most efficient split system AC available with efficiency up to 26 SEER. There are 10 other models starting at 13 SEERS.

Lennox Air Conditioners Technical Specifications

The wide range of models is designed to meet consumers’ needs. This is whether they want a cheap, low-efficiency model or are willing to pay top dollar for a premium AC with great efficiency and climate control features.

Lennox single-stage air conditioners are made in each series. They range in efficiency from 13 to 18.5 SEER with the top-pick Lennox SL18XC1. They make the industry’s most efficient single-stage model.
Single-stage ACs are affordable, but run at full capacity all the time. Therefore, the cycles are loud and might cool past the thermostat set point.
Lennox two-stage models are available at 17.2 SEER. The top-pick Lennox XC21 is a 21 SEER AC that is the most efficient in its class.
Two-stage ACs run at low capacity for quieter, more balanced cycles. They remove more humidity from summer air than single-stage models can.
Lennox makes two variable-capacity ACs, the XC25 and the Elite XC20 with a 20 SEER rating.
Variable-capacity ACs modulate up and down like cruise control. They deliver precise balance, the quietest performance and the best dehumidification.
All Lennox air conditioners are compatible with the brand’s SunSource solar panels that can provide enough energy for the entire HVAC system in sunny climates.

Pros and Cons of Lennox Air Conditioners

For all the advantages Lennox ACs offer, there are a few concerns to consider.

Lennox AC Pros

Lennox’s high-efficiency ACs can reduce air conditioning costs and energy use by as much as 60 percent when replacing an old AC;
Two variable-capacity models give you efficiency and cost options for premium indoor climate control;
Seven Lennox air conditioner models meet Energy Star criteria. Also, they are eligible for rebates from many energy companies;
Lennox covers the other bases too – affordable models for those that don’t require an efficient AC;
The brand makes a full range of heating, air conditioning, home ventilation equipment and thermostats. Moreover, by coordinating a system with compatible components is the best way to optimize efficiency and comfort;
The Wi-Fi thermostat controls allow you to monitor and control your HVAC from anywhere using a smart device;
Lennox’s service record is in the top 5-7 of all brands in most years.

Lennox AC Cons

Most Lennox air conditioner models cost more than comparable ACs;
Lennox warranties are average for the industry – 10 years for Signature Collection and Elite Series units and 5 years for Merit Series. Goodman, Amana, Maytag, Westinghouse and Heil are among the brands offering longer warranties;
Lennox makes its own repair parts, unlike most other brands. While that might improve quality, supply-chain issues sometimes delay parts and repairs;
The brand is currently having issues with Lennox air conditioner coils in some models;
As is true with most top brands, you can only buy a Lennox air conditioner through an authorized dealer. So, comparing pricing is impossible without getting a sales presentation from a representative.

Things to Consider Before Purchasing a Lennox Air Conditioner

If you speak with a Lennox sales agent, we suggest you ask about the coil issues. If he or she claims not to be aware of the issue, try a different brand. Only choose Lennox if you get assurances from your local dealer that the coil will receive a proper warranty. While the part is covered for 10 years, the labor is generally covered for just one year. Consider purchasing an extended warranty on the labor.

When purchasing an air conditioner, the hotter your climate is, the more efficient your AC should be. The extra cost might be paid back through lower energy costs in as little as three years. Also, you’ll be saving money every cooling month beyond that.

Many of our readers are committed to ecofriendly heating and cooling. To create the least environmental impact, choose the most efficient AC you can afford and/or consider the installation of a whole-house attic fan. This option can quickly replace warm air in the home with cool evening air. If you’re in a sunny climate, ask your Lennox dealer about SunSource. The equipment is expensive, but it could reduce your cooling costs (heating too) to zero!

Ask your HVAC contractor to do a proper load test to ensure that the Lennox air conditioner you select has large enough capacity – but not too large. If your home has been made more energy efficient since the last AC was installed, perhaps by adding insulation or upgrading the windows, then your next air conditioner should be smaller.

Consider, Compare and Share

We hope this Lennox air conditioner guide has been helpful as you consider and compare one of the industry’s leading brands.

It’s easy to share this post on social media to benefit friends and followers looking at their central AC options.

Factors When Buying Types Of Air Conditioners: Type, Size, And Price

We always wish that summer would never end. And for some parts of the U.S. it often seems that way due to the scorching temperatures that tend to last well into the Fall season. When it’s miserably hot outdoors, you want to be able to go inside your home and cool off. But if you […]