Absorption heat pumps use an ammonia-water absorption cycle, as opposed to a vapor-compression cycle, to transfer heat. Ammonia is definitely the refrigerant, and water could be the absorber. The ammonia condenses at one of several technique’s coils to release heat and evaporates at another coil to soak up heat. Absorption https://purethermal.co.uk/media-news/can-gas-absorption-heat-pumps-provide-an-alternative-heat-pump-option-in-2025/