Your furnace won't last forever. What comes next?
An independent guide to heat pumps and mini splits: what they cost to run, what size you need, and when a furnace still wins. We sell nothing.
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Furnace or Heat PumpRunning cost, dual fuel, repair or replace, and what changes…
SizingMini split and heat pump size, and load from your…
Cold ClimateWhat happens at 17F, 5F and below, and what backup…
Mini SplitsAgainst central air, electricity use, leaks, cooling and cleaning
TroubleshootingSymptoms, emergency heat, ice, fan, noise and upkeep
Rebates and RulesTax credit, federal and state rebates, and refrigerant and efficiency…
Calculators
How we estimate.
Your own bills and rates, the maker's figures at your temperature, and a dated source for every number. When the furnace wins, we say so.
Read our method