To find the most effective from a heat pump, You will need to know how to use it most correctly. Typically, You will need to set your heating to come on for extended than with a standard technique. Your installer really should demonstrate how to regulate your heat pump technique. https://purethermal.co.uk/media-news/q4-launch-lithium-large-capacity-r290-ashp-from-pure-thermal-and-enerblue/