Plumbing and water heaters
Heat pump water heater with exterior compressor
...air-to-air heat pumps. An exterior-compressor heat pump water heater does not interact in any way with interior air. In this particular case, the CO2 refrigerant extracts heat from the outside air and transfers it to the water, which is then stored in the tank inside your home.
The SANC02 is the first heat pump water ...