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To ensure optimum comfort and energy efficiency you’ll want to consider the size space or room size that you are looking to install your new air conditioning unit in. In general, residential air conditioning units will range from 2kW – 9kW.
A low powered air con unit in a large space will struggle to maintain a desired temperature and therefore must work harder, shortening its lifespan. A larger system in a small room will not be cost efficient due to higher upfront and running costs.
As a basic guide it is recommended that an air conditioner should have approximately 125 watts of power for every square meter of area it supposed to cool/heat.
Use the below formula and table to help assist in determining what size will be suitable for your space.
m² X 125watts = Recommended Air Con Unit Size
|Size Room Or Space||Air Con Unit Size (approx.)||Aircon Unit Type|
|< 20m²||2kW-4kW||– Portable
– Small Split System
– Window Box
|20m²-40m²||4kW-6kW||– Window Box
– Split System
|40m²||6kW-9kW||– Split System|
|Multiple rooms or entire house||9kW+||– Multi Split