Using a GWP of only 3, R290 would be the eco-friendly choice to other refrigerants emphasising Haier’s motivation to producing options for a more sustainable future. Air source heat pumps use the same type of know-how that retains a fridge or freezer cool – but in reverse. Dwell more sustainably: https://socialmediatotal.com/story5473461/the-2-minute-rule-for-r290-air-source-heat-pump