BESS Air Buying Guide

Open Plan Air Conditioner Guide

Open-plan homes require more than just a bigger air conditioner. Learn how to choose the right size, compare leading brands and avoid the most common sizing mistakes for Perth homes.

What Size Air Conditioner Do I Need?

Area Size Recommended Capacity
40m² – 60m² 6.0kW – 7.1kW
60m² – 80m² 7.1kW – 8.0kW
80m² – 100m² 8.0kW – 9.5kW
100m²+ Site Assessment Recommended

Most Open Plan Homes Need More Capacity Than Expected

Open-plan areas often include kitchens, dining rooms and living spaces. Combined with large windows and Perth summers, these spaces typically require larger systems than homeowners initially expect.

Why Open Plan Spaces Are Harder To Cool

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Connected Spaces

Conditioned air can move freely throughout the home.

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Kitchen Heat

Cooking appliances create additional heat loads.

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Large Windows

Glass can dramatically increase cooling requirements.

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Higher Ceilings

More air volume requires greater capacity.

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More Occupants

Shared spaces often have higher occupancy levels.

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Voids & Stairwells

Air naturally moves between levels.

Need Help Choosing For An Open Plan Space?

Open-plan layouts can be tricky to size correctly. Our team can help recommend the right system based on your floor area, layout, insulation and sun exposure.