Toshiba Estia Split Heat Pump Air to Water HWS-1404XWHM3-E / HWS-1104H-E , 11.20 kW for heating and 10.00 kW for cooling

HEAT PUMP, using energy source: AIR-WATER. The system increases the energy effectiveness, extracting energy from the air. This a cheap way, which doesn't consume much electricity and at same time is a powerful device, which will maintain stable temperatures.