A heat pump includes the same internal components you get with furnace installation, which include a condenser, compressor, motor, fan, evaporator coil, etc., but its mechanism is different. The heat pump extracts the hot air from an outside source by absorbing it in the refrigerant.
It uses electricity to heat the extracted air and pump it indoors. During summers, it extracts hot indoor air and throws it outside.
For furnace installation in Mesa, AZ, choose Sharp Air Conditioning and Heating.