Fairair - The right advice means the right choice

Size Calculator

What size do I need? (Single Room)

All residential air conditioners will carry a label showing the unit's cooling output in kilowatts (kW).

Every room and every home is different, so we recommend that you get a licensed contractor to visit your home and provide a detailed heat load calculation. Using the calculator below, however, will give you a rough idea of the cooling output you will need:

1. 1  














2. 2    


m² 







3. 3    


m²








4. 4What is the height of the ceiling in the room you are cooling?


m

5. 5What is the total area of the internal walls with unconditioned space adjacent?


m²

6. 6What is the total area of external walls including all the windows?  


m²









7. 7How large are the windows? 


m² South  



m² South East  




m² South West  




m² East  




m² West  



m² North  



m² North East  




m² North West  



8. 8   




Total cooling requirement (kW) =
kW

This calculator will estimate the capacity required to cool a single room. If you want an air conditioner to cool multiple rooms, the estimation process is more complex and you will need to seek advice from a licensed contractor.