Tools & Calculators

HVAC calculators, built on certified data

Every incumbent sells you leads. We give you the math first. These calculators run on the same AHRI / ENERGY STAR performance data behind the rest of the site — no sign-up, no sales call.

Operating-Cost Calculator Live

Enter your local electricity and gas prices → get $/MMBtu delivered heat and annual cost for a heat pump vs. furnace vs. electric resistance. Our money stat.

Sizing Calculator Coming soon

BTU load by square footage and climate zone — right-size equipment before you shop.

Rebate Finder Coming soon

ZIP → federal, state and utility incentives you actually qualify for (25C expired 12/31/2025; state + HEEHRA still live).

Payback / Savings Coming soon

Heat pump vs. gas or oil — years to break even at your energy prices.

Filter / MERV Selector Coming soon

Match a furnace filter by size and MERV — with the MERV↔MPR↔FPR crosswalk.

Calculators use published performance ratings (SEER2 / HSPF2 / AFUE) and EIA energy prices. Formulas are documented in our methodology. We never estimate a spec that isn't published — missing values render as "not published," never guessed.