Absorption heat pumps use an ammonia-water absorption cycle, rather then a vapor-compression cycle, to transfer heat. Ammonia is definitely the refrigerant, and h2o would be the absorber. The ammonia condenses at one of many method’s coils to release heat and evaporates at the other coil to soak up heat. To https://purethermal.co.uk/media-news/can-gas-absorption-heat-pumps-provide-an-alternative-heat-pump-option-in-2025/