Set ideal temperatures: Regulate the thermostat to the specified temperatures for heating and cooling in your house. Ammonia is toxic but has zero GWP. Packaged GAHPs retain the ammonia circuit outdoors or in mechanical rooms for each code with proper ventilation and, where by needed, leak detection. Observe nearby codes https://purethermal.co.uk/media-news/can-gas-absorption-heat-pumps-provide-an-alternative-heat-pump-option-in-2025/