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Heater Size Calculator

Formula

To calculate the correct heater size for a room:

$\text{HS} = L \times W \times H \times \text{IF}$

Where:

The correct heater size for a room primarily depends on two factors:

The size of the room. The larger the room, the larger the heater needs to be.
The quality of insulation in the room. Better insulation leads to less heat loss and less energy/heat required from the heater.

Let's assume the following values:

Using the formula:

$\text{HS} = 20 \times 15 \times 10 \times 5.5 = 16500$

The Heater Size is 16,500 BTUs.