Amazon has conducted a successful six-month field trial of a new rooftop heat pump system developed by U.S. startup Transaera at one of its logistics facilities. The system utilizes metal–organic framework (MOF)–based dehumidification to remove moisture from outdoor air before cooling, operating as a dedicated outdoor air system (DOAS) that is all-electric and eliminates the need for gas-fired reheat. With claims of delivering approximately 40% energy savings compared to conventional units, the technology is designed for large commercial buildings with high humidity control needs. This innovative system aims to reduce operational costs, enhance indoor air quality, and support Amazon's Climate Pledge goal of reaching net zero carbon emissions by 2040.