Degree Day Heating Load
Calculator

Inputs

Heating degree days
1,170

Results

Heating degree days
1,170
Estimated heating load (kWh)
7,020

Energy results

Heating degree days1,170
Estimated heating load (kWh)7,020

formula-map diagram

Heating degree days
1,170
Estimated heating load (kWh)
7,020

Energy relationship

Formula

Q(kWh) = UA(W/K) × HDD × 24 ÷ 1000

= 1170

Note

This is a simplified model: it applies the standard equation to the numbers you entered and ignores real-world losses, weather variation, tariff structures and equipment tolerances. Wind power assumes air density 1.225 kg/m³ at ISA sea level and the power coefficient you enter (Betz limit 0.593). Verify with measured data or a professional energy audit before making purchasing decisions.

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