R290 refrigerant is a naturally occurring refrigerant, making it environmentally friendly, it has zero Ozone Depletion Potential (ODP=0), meaning it doesn’t contribute to the depletion of the ozone layer; And it has a low Global Warming Potential (GWP-3), meaning it doesn’t contribute significantly to global warming.
It is the perfect solution for renovations, where a high water outlet temperature is required.