HVAC Sizing Wizard
Manual J-lite load calc: BTU, tonnage, SEER2 tier and cost in 5 steps.
2026 pricing · all 50 states
Pick your state and system. We estimate the installed price range before you ever talk to a contractor — no email required.
Manual J-lite load calc: BTU, tonnage, SEER2 tier and cost in 5 steps.
Quick square-footage to tons, adjusted for your climate zone.
Heating BTU by home size and climate.
Per-zone ductless sizing for additions and single rooms.
Heat-loss based boiler output sizing.
Installed price range by state and system size.
Combined system replacement estimate.
Air-source heat pump installed cost by state.
Monthly payment by amount, rate and term.
Monthly run cost using your state electricity rate.
Payback period for a higher-efficiency upgrade.
Lifetime cost and savings comparison.
Ducted central vs ductless multi-zone.
Estimated savings from smart controls and zoning.
Utility rebates and geothermal (25D) incentives.
Compare installed prices from licensed contractors near you. Free, no obligation — takes about a minute.