About Us
All Things HVAC publishes practical guidance on home heating, cooling, ventilation and hot water.
About this site
We publish general information for readers researching HVAC equipment and maintenance. The site does not provide local contracting services.
What we don't do
We don't install equipment, we don't quote jobs, and we don't sell your details to a contractor network. There is no lead form on this site and there never will be. That independence lets us discuss equipment and services without selling a job.
How we source things
Where an article makes a claim that rests on a standard, a federal programme or a code, we link the document itself rather than someone's summary of it. In practice that means ENERGY STAR product pages, the EPA on refrigerants and indoor air quality, ACCA for load calculation and installation quality, the AHRI directory for certified performance ratings, NFPA for fuel gas and oil-burning codes, and the Bureau of Labor Statistics for anything about pay and employment in the trade.
Every outbound reference on this site was checked and confirmed to resolve. Where a source we previously cited had gone dead or could not be verified, the citation was removed rather than left pointing at nothing.
When things change
Two things in this industry changed recently enough to invalidate a lot of older writing, including some of ours. Efficiency ratings moved from SEER to SEER2 in January 2023, and the refrigerant in new residential systems moved away from R-410A under the AIM Act's phasedown. Rather than quietly editing old numbers, articles that quote the older measure carry a visible note explaining what changed and what to check instead. You will see those notes in the relevant guides.
Corrections and contact
If something here is wrong, out of date, or unclear, we would rather hear it than not. Write to [email protected].
The usual disclaimer, meant sincerely
Everything here is general guidance. It is not a substitute for someone competent putting gauges on your specific equipment, and it cannot account for your local code. Gas, high voltage and sealed refrigerant circuits genuinely do hurt people. Where an article tells you to stop and call somebody, that is the advice, not a hedge.