Heat is taken from the air outdoors working with an exterior heat pump device. This really is transferred into your home to deliver your heating. The refrigerant in an air-source heat pump absorbs heat from your outside air and turns into a gas via evaporation. This gasoline is then compressed, https://purethermal.co.uk/media-news/q4-launch-lithium-large-capacity-r290-ashp-from-pure-thermal-and-enerblue/