Building Energy/

     Major cities are rapidly evolving toward zero carbon emissions.   A large portion of the emissions are related to building heating and hot water use.  A deep electrification of the heating systems will be required to adavnce towards zero carbon economy. This project is a partnership with the City of New York and the HVAC industry to further develop, test, and demonstrate advanced low Global Warming Potential (GWP) electrical heat pumps for space heating and cooling and domestic hot water. We are using transcritical CO2 cycle to achieve high efficiency in heating space.