Heat Recovery Calculator

Input Parameters

Imperial (°F, BTU, ft)SI (°C, kW, m)

Exhaust Airflow (CFM)

Exhaust Temperature (°F)

Outdoor Temperature (°F)

Recovery Efficiency (%)

56,700

Recovered Heat BTU/hr

59,603

Annual Savings $

Payback Period years

Formula:

Q_{recovered} = CFM \times \Delta T \times 1.08 \times \eta

Calculation:

Q_{recovered} = 1000 \times 75.0 \times 1.08 \times 0.7

Result:

56700.00 \text{ BTU/hr}