Having a GWP of only three, R290 will be the environmentally friendly alternate to other refrigerants emphasising Haier’s determination to producing options for a more sustainable long term. It is more easy to include much larger radiators or underfloor heating for the heat pump As you're extending your own home https://purethermal.co.uk/media-news/q4-launch-lithium-large-capacity-r290-ashp-from-pure-thermal-and-enerblue/