The WPL 15 A2W Premium and WPL 25 A2W Premium cold climate air-source heat pumps use outdoor air to produce hot water for central heating, cooling and domestic hot water production. The compact monobloc design uses output-dependent control and efficient inverter technology, ideally matching heating and cooling output through the variable speed compressor. Improved room climate during summer is accomplished with active cooling using circuit reversal. Highly integrated & comprehensive cold climate heat pump and tank system Monobloc with energy efficient inverter technology Central heating and cooling, with DHW heating 149°F/65°C flow temperature 2.77 COP Cold Climate Efficiency Low operating noise