Greenhouse Cooling Calculator
Size exhaust fans and evaporative cooling pads for greenhouse ventilation based on volume and heat load.
Inputs
ft
ft
ft
°F
°F
fc
CFM
Results
Required Airflow
473,143 CFM
Fans Needed
48
Greenhouse Volume28,800 cu ft
Solar Temp Rise100 °F
Cooling Pad Area1,892.6 sq ft
Pad Width315.4 ft
Water Usage4,731.4 GPM
Floor Area2,880
How to Use This Calculator
- Enter your greenhouse dimensions (length, width, sidewall height in feet) to calculate the total air volume.
- Enter the peak outside temperature (°F) and your desired inside growing temperature.
- Enter the light intensity in foot-candles and the CFM rating of each exhaust fan you plan to install.
- Review Required Airflow (CFM), Fans Needed, and Cooling Pad Area (sq ft) for evaporative cooling design.
- Use Water Usage (GPM) to size your pad water supply line and recirculating pump.
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