The SPRSUN R290 DC Inverter Air-to-Water Heat Pump is designed with Panasonic DC Inverter Compressor and DC Inverter Fan Motor to meet stringent requirements for eco-friendliness, efficiency, stability, and quietness. In addition to utilizing R290 green gas and inverter technology, the new unit is also rated with an A+++ energy label, reducing energy bills for residential uses. As an ideal choice of multiple functions (heating, cooling and/or hot water), the R290 heat pump has the following significant features compared with the R410/R32 series.