YK-03/BPKTR3-F This series is our split cooling and heating heat pump. It is specially designed for cold areas, it can be used for room heating, radiators, and DHW can also be provided. One machine is multi-purpose to meet the needs of life.Air Source Heat Pump, Cooling Heat Pump, DC Inverter Heat Pump, Heat Pump, Pool Heat Pump, Water Source Heat Pump split DC inverter air to water heat pump is a type of heating system that uses the outside air as a heat source to heat water for use in a home or building. The system consists of two main components: an outdoor unit and an indoor unit. The outdoor unit contains the compressor and heat exchanger, while the indoor unit contains the water tank and circulation pump.