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HVAC Size Calculator

Accurately estimate your HVAC system size with our HVAC Size Calculator! Calculate the perfect cooling and heating BTU requirements based on your home size, insulation quality, ceiling height, and climate conditions.

HVAC Size Calculator

Cooling Load

Heating Load

Summary

Approx. Cooling BTU = Area (sq ft) × 25 – (some adjustments)

Cooling Load

Enter basic info for a rough estimate of required cooling capacity.

Area (sq ft)

Ceiling Height (ft)

Number of Occupants

Insulation Quality

Parameter	Value

Approx. Heating BTU = Area (sq ft) × 35 – (some adjustments)

Heating Load

Enter info for a rough estimate of required heating capacity.

Area (sq ft)

Outdoor Winter Temp (°F)

Desired Indoor Temp (°F)

Insulation Quality

Parameter	Value

Summary: Cooling & Heating Loads

Summary

Parameter	Value