Eric Walker added US manufacturer releases cold climate heat pump – pv magazine International to Heat pumps

Eric Walker added Heat pumps to Heat Pumps: the Future of Home Heating - YouTube

Eric Walker added Heat pumps to Are ‘Heat Pumps’ the Answer to Heat Waves? Some Cities Think So. - The New York Times

Eric Walker added As Heat Pumps Go Mainstream, a Big Question: Can They Handle Real Cold? - The New York Times to Heat pumps

Eric Walker added Heat pumps to Heating, ventilation, and air conditioning (HVAC)