The greenhouse heat calculator is for very approximate guidelines only. Many internal and external factors such as type of internal wrapping, walling, wind speed etc. would have an impact on the correct volume of heat power required. For precise calculations, we recommend that a specialist heating engineer is consulted prior to equipment purchase.
Square Surface Area Calculator for a Standard Gable End Greenhouse Structure
Calculate dimensions by: or
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Square Surface Area Calculator for a Lean To Greenhouse Structure
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Power required to heat a greenhouse
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This section calculates the Power required to heat a greenhouse or glasshouse structure in winter based on your input parameters. This calculation is intended as a guide for estimation purposes only . Other factors like wind shear heat loss can also significantly increase heating requirements.
Heat Loss Factor Parameters
Please chose the one that most represents your Structure
- Single layer of glass
- 1.1
- Glasshouse bubble wrap lined
- 0.6