Electric heaters are used to convert electrical energy into heat energy by emitting heat or infrared rays after the electric heating wire is energized, so their output energy and input energy are the same.
Air conditioners for heating are divided into heat pump type, electric heating type, and heat pump assisted electric heating type. Heat pump type air conditioners absorb heat from outdoors and then release it into the room through the cooling system, which is only a heat transfer. When the outdoor temperature is not lower than 5 degrees, the power released by the heat pump type air conditioner is 2 to 3 times the input power, so in this case, the heat pump type air conditioner is much more energy-efficient than electric heating. However, when the room temperature is lower than 5 degrees, the evaporating capacity of the refrigerant decreases, and the heating capacity of the heat pump type air conditioner decreases, and it may not be able to heat properly when it is lower than -5 degrees.
The principle of electric heating type air conditioner is different from heat pump type, similar to the principle of electric heating, which is directly converted into heat energy and then released, independent of the outdoor temperature, and consumes the same amount of electricity. The heat pump auxiliary electric heating type air conditioner is based on the heat pump type to add electric heating elements, when the outdoor temperature is high when the heat pump type working state, so more power saving, when the outdoor temperature is too low when the electric heating element heating