Product Guide Air-Source Unitary Heat Pumps A Mayekawa Unimo air-to-water heat pump installation in Australia Photo: Mayekawa Behind the recommendations Related articles Behind the recommendations Related articles Air-Source Unitary Heat Pumps Ducted air-source heat pumps meeting the highest efficiency standards More about Air-Source Unitary Heat Pumps A Heat Pump Using Carbon Dioxide as the Refrigerant A new generation of CO2-based heat pumps could avoid the high global warming potential of standard refrigerants and generate much higher temperatures How Air-Source Heat Pumps Work Heating with cold air? Cooling off with hot air? Heat pumps performing these feats (especially mini-splits and VRF systems) have taken off, but how do they work? Next Up in Heat-Pump Refrigerants: Carbon Dioxide
