Heat Gain Calculator

Input Parameters

Imperial (°F, BTU, ft)SI (°C, kW, m)

Area (sq ft)

U-Value (BTU/hr·ft²·°F)

Indoor Temperature (°F)

Outdoor Temperature (°F)

Enable Dynamic Analysis

6,000

Heat Gain BTU/hr

Heat Gain per Area BTU/hr/sq ft

Temperature Difference20 °F

U-Value0.3 BTU/hr·ft²·°F

Area1,000 sq ft

Formula:

\Delta T = T_{outdoor} - T_{indoor}

Calculation:

\Delta T = 95 - 75

Result:

20.00 \text{ °F}

Formula:

Q = A \times U \times \Delta T

Calculation:

Q = 1000.00 \times 0.30 \times 20.00

Result:

6000.00 \text{ BTU/hr}

Formula:

Q/A = \frac{Q}{A}

Calculation:

Q/A = \frac{6000.00}{1000.00}

Result:

6.00 \text{ BTU/hr/sq ft}