The aroTHERM plus air-to-water heat pump combines exceptional performance with maximum environmental friendliness. With a COP value of up to 5.4, the aroTHERM plus heat pump is extremely energy efficient and with a noise level of 28 dB (A) (at a distance of 3 metres in quiet mode), it allows installation even in densely built-up areas. With the natural R290 refrigerant used and its very low global warming potential (GWP 3), you will be ready for the future with the aroTHERM plus.