Independent by design

About HVAC Cost Lab

HVAC projects are expensive, technical, and difficult to compare. HVAC Cost Lab gives U.S. homeowners a neutral baseline before a sales conversation begins.

What we do

We publish original calculators and plain-English guides for system sizing, project cost, operating cost, airflow, efficiency, maintenance, and the home envelope. We show assumptions, cite primary sources, and flag where a professional calculation is required.

What we do not do

We do not sell homeowner contact information, run contractor lead forms, issue engineering designs, or represent calculator output as a binding quote. Advertising and clearly labeled affiliate links may support the site, but they do not determine formulas or editorial conclusions.

Our promise

A useful result should make the next conversation more informed. It should not create false certainty. If a number depends heavily on local evidence, the tool asks for that evidence or explains the gap.