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Is It Cheaper to Leave Air Conditioning on All Day or Not?
For most Buderim households, switching the air conditioning off when nobody is home for several hours costs less than leaving it running all day. Maintaining a cool indoor temperature means the system must keep removing heat entering through windows, walls and the roof. Letting the house warm up while you are out generally reduces that cooling demand. However, the best approach depends on how long you are away, your air conditioner, electricity tariff and whether roof