Greenhouse Calculator

Calculate heating requirements, heater size, and estimated costs for your greenhouse.

Length (ft)

Width (ft)

Height (ft)

R-Value

Outdoor Temp (°F)

Desired Temp (°F)

Energy Cost ($/therm or $/kWh)

BTU/hr Needed

Heater Size

0 BTU

Surface Area

0 ft²

Temp Diff

0°F

Est. Cost / Night (12hr)

Est. Monthly Cost

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