Why is it said that air can be low-carbo

The air energy water heater is a new generation of hot water equipment for deep utilization of solar energy, which makes full use of the free low temperature heat in the air. With 1 kilowatt hour of electricity, you can obtain 4 kilowatt hour of heat energy from the air, and the power consumption is only 1/4 of that of the electric water heater; At the same time, the air energy water heater does not emit any toxic gas, greenhouse gas, acid rain gas or waste heat pollution during its operation. It can be said that the choice of air energy water heater is the choice of low-carbon and environment-friendly life.