Estimate repair, replacement, installation, and operating costs before you talk to a contractor. Every tool runs in your browser — nothing you enter is stored or sent anywhere. Estimates are not a contractor quote; see how our estimates work and our cost methodology.
A guided estimate for a repair, replacement, or new installation — by system type, home size, climate, and existing equipment. Shows the cost range, labor and equipment split, project duration, and what can push the price up.
Start the estimate →Replace a central air conditioner — by size, SEER, ductwork and region.
Calculate now →Estimate by fuel type, AFUE efficiency rating, and home size.
Calculate now →New furnace + AC combo, full heat pump, or ductless multi-zone system.
Calculate now →Ducted, ductless, or geothermal — by home size, climate, ductwork and backup heat.
Calculate now →Find the right tonnage from square footage, climate and insulation.
Calculate now →Lifetime cost of an all-electric heat pump against a gas furnace and air conditioner.
Calculate now →Compare a furnace + AC setup to a heat pump and estimate annual savings.
Calculate now →Monthly and seasonal cost to run your AC, heat pump, or furnace.
Calculate now →Enter wattage or appliance type for instant monthly and yearly cost.
Calculate now →One-time tune-ups vs. annual maintenance plans for your system.
Calculate now →We're building additional estimators to round out the picture.
Estimate the cost to seal, repair, or resize existing ductwork by home size and access.
For homes with hydronic (radiator or baseboard) heat rather than forced air.
Tell us about your project once and we'll match you with vetted HVAC contractors in your area.
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