heat out of the building and a small fan in an occupied room to provide a breeze go along way toward cooling the whole building and making any given temperature feel more comfortable - while using under 100 watts (compared to 3000 to 5000 watts for A/C - 30 to 50 times as much power...
A typical 1800 W air-conditioning unit operating for up to 8 hours may consume around 14.4 kWh per day, accounting for nearly half of the average power usage. Similarly, space heaters running at 1500 watts can consume comparable or even higher amounts of energy during winter than cooli...