The aircons are far more efficient these days, but in mostly wooden hardly insulated houses often built in the US the costs are way higher. A fully running air

The aircons are far more efficient these days, but in mostly wooden hardly insulated houses often built in the US the costs are way higher. A fully running aircon for a single room pulls around 1kw per hour, while it usually runs about 15 mins per hour in an efficient environments, depending in temps, humidity and insulation. Not speaking oft a whole house...