As an air to water monobloc heat pump, it operates efficiently employing eco-pleasant R290 refrigerant, providing sustainable heating with a powerful A+++ Strength effectiveness ranking. A lot of the upkeep demands for air source heat pumps reflect that of typical air conditioning and furnace installations, such as frequent air filter https://purethermal.co.uk/media-news/q4-launch-lithium-large-capacity-r290-ashp-from-pure-thermal-and-enerblue/