Here is a rough guide to calculate the approximate size of cooling equipment you should buy to effectively cool the area selected.

Simply measure the floor area of the room and calculate the square area. Measure the length of the room and then measure the width. Multiply one measurement by the other and this is your square area.

If you measured in feet then use the multiplier on the square feet chart. If you measured in Metres then use the multiplier on the square metre chart.

The answer will be the approximate amount of heat your room develops in Watts, and this is the cooling capability of equipment you will need to keep the area cool.

Remember this is only an approximate guide, and if in doubt you would always be advised to select a larger duty unit to be on the safe side. Alternatively you could e-mail us giving your room details and we will forward a heat gain calculation.

To calculate Watts from Btu/h simply divide the Btu/h figure by 3.4

Example is 7500Btu/h divided by 3.4 = 2205Watts or 2.20kW.

Conversly, Btu's can be calculated from Watts by multiplying Watts by 3.4.

Example is 2205Watts Multiplied by 3.4 = 7497Btu's.