How do air conditioners cool? Which air conditioners are environmentally friendly?

How do air conditioners cool? Air conditioning; compressor, condenser, expansion valve (expansion valve), evaporator (evaporator) consists of four parts. The compressor and condenser (condenser) form the outdoor unit, the expansion valve (evaporator) and the evaporator (evaporator) form the indoor unit. Air passing through the indoor unit leaves the heat from the vapor to the gas …