Economics: Request a existence-cycle Value Examination with utility amount projections and possible incentives. Ammonia is toxic but has zero GWP. Packaged GAHPs continue to keep the ammonia circuit outside or in mechanical rooms per code with right ventilation and, where expected, leak detection. Stick to nearby codes and company Recommendations. https://purethermal.co.uk/media-news/can-gas-absorption-heat-pumps-provide-an-alternative-heat-pump-option-in-2025/