What size RCAC do I need?

What size RCAC do I need?

You don’t want to pay extra for a bigger-than-necessary conditioner, but neither do you want an overworked air conditioner that’s still too small for your family’s needs. 

A qualified air conditioner professional should always give you a home-visit assessment before you make any air conditioner size decisions. The assessor will analyze your house, use of rooms, and cooling needs before giving you an air conditioner size recommendation. 
However, you should be ready to converse with the assessor and understand the reasons behind their recommendation. 

This rough guide from Choice Magazine allows you to make an approximate assessment so that you and the technician can be on the same page when discussing your new air conditioner’s size:

Room size

Capacity

Up to 20 square metres

2-2.5kW

20-40 square metres

2.5-5kW

40-60 square metres

4-6kW

60-80 square metres

5-7kW

80+ square metres

6-9kW


General rule: room size x .125 (125 watts of power for every square meter of area to cool)

Quotes will include visits to assess room size, orientation, window size and insulation.

 

2.6kW range - Suitable for rooms approx 10 - 25sqm (bedrooms, studies, small lounges/kitchens/offices).

 

3.5kW range - Suitable for rooms approx 25 - 35sqm (bedrooms, bedrooms with ensuites, studies, small lounges, mid-sized kitchens, small rooms with high ceilings, offices).

 

5 - 6kW range - Suitable for rooms approx 35 - 60sqm (Large bedrooms, bedrooms with ensuites, studies, mid-size lounges, large kitchens, mid-sized rooms with high ceilings, offices).

 

7 - 8kW range - Suitable for rooms approx 60 - 80sqm (Large lounges, large open plan areas, small shops, offices).