About
About Garage Heat Lab
Garage Heat Lab is an independent sizing tool for people heating a garage or workshop. It exists because most sizing advice online either hides its math or exists to sell you a specific heater.
What this site is
A free calculator plus reference charts and size guides, all driven by the same documented formula. Every assumption is published on the methodology page, including the sources for the formula and the rounding rules. The calculator runs entirely in your browser: no account, no email capture, no quote form.
What this site is not
We are not HVAC engineers and this is not a substitute for a professional heat-loss calculation. We do not sell heaters, take commissions from manufacturers, or rank products. If the site ever carries advertising, ads will be labeled as such and will not change the numbers the calculator produces.
Corrections
If you find a number that looks wrong, or a source that contradicts our factors, we want to know. Reach us through the contact page: corrections are reviewed against published sizing guidance and the methodology page is updated when warranted.