Space Heating Heat Loss Estimator
Winter envelope heat loss calculations for heating equipment sizing.
Winter Heat Loss Formula:
\( Q_{\text{loss}} = (\text{Volume} \times \text{ACH} \times 0.018 + A_{\text{surface}} \times U_{\text{factor}}) \times \Delta T \)
Space & Climate Inputs
Design Temperature Difference
60 °F ΔT
Heat Loss Rate
42,120 BTU/hr
Heating Output Required
12.34 kW