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