This revolutionary design provides a confirmed operation vary down to -twenty five°C ambient temperature, whilst utilising the refrigerant Houses of R290 to successfully reach higher water temperatures as much as seventy five°C and a lower GWP (Global Warming Probable). The placement of your outdoor device may well affect its efficiency. https://purethermal.co.uk/media-news/q4-launch-lithium-large-capacity-r290-ashp-from-pure-thermal-and-enerblue/