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RARE & EXOTIC PLANTS

Hard-to-find varieties

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Heating & Cooling Calculator

Size the air-conditioner and heater for your grow space from its real heat loads

Room & Units

Unit System

Length (m)

Width (m)

Height (m)

Insulation

Air Changes / Hour (ACH)

Temperatures

Target Indoor Temp (°C)

Outdoor Design High (°C)

Hottest expected outside temp (drives cooling).

Outdoor Design Low (°C)

Coldest expected outside temp (drives heating).

Heat Sources

Total Light Power (W)

LED lights add ~1 W of heat per watt drawn.

Other Equipment Power (W)

Pumps, internal fans, etc. that run in the room (sensible heat).

Advanced

Show advanced options

Sizes temperature (sensible) load: pair with the Dehumidifier Calculator for moisture.