The Domestic Heat Pump Water Heater is designed for household, as well as small commercial buildings such as small offices, schools, apartments etc.
The compressor used is Mitsubishi or Toshiba which is with durable features against high temperature and high pressure for long life. And the coaxial coil heat exchanger is durable for anti-corrosion, hard water, high pressure and unexpected freeze caused by power cut-off.
With reasonable structure and high efficient components, its COP state is in accordance with EN14511. And it is CE and CB certificated. So using it will reduce your electricity bill a lot and also assure you get grants from government.