Home Heating BTU & HVAC Tonnage Solver
Estimate whole-home heating and cooling loads to ensure your new heat pump or AC system is accurately sized without short-cycling.
Home Dimensions & Climate Zone
Manual J Sizing ModelRecommended Capacity & Airflow
Recommended HVAC Tonnage
3.5 Tons
Heating Load
48,000 BTU
Cooling Load
42,000 BTU
Airflow CFM
1,400 CFM
Heat Pump Ton Rating
1 Ton = 12,000 BTU/hr Output
Ductwork Airflow Requirement
~400 CFM per Ton of Capacity
Oversizing Warning
Oversized systems cause high humidity and short cycling
Efficiency Standard
ENERGY STAR Cold Climate certification required for IRA rebate
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