BTU Calculator

Calculate BTU requirements for heating and cooling.

Room Details

Room Size

sq ft

Ceiling Height

Insulation Quality

Climate Zone

Additional Factors

Number of Occupants

Number of Windows

Sun Exposure

BTU Reference

150-300 sq ft5,000-7,000 BTU

300-450 sq ft8,000-10,000 BTU

450-700 sq ft10,000-14,000 BTU

700-1,000 sq ft14,000-18,000 BTU

1,000-1,200 sq ft18,000-24,000 BTU

1 ton of cooling = 12,000 BTU/hr

Cooling Requirements

BTU Required12,000

Tonnage1 tons

Watts3,516

Recommendation

Small portable/window AC