Heat Pumps Designed to Save Energy

Air Conditioning, Heating, Refrigeration News, May 26, 2014, by Joanna R. Turpin.
http://www.achrnews.com/articles/126690-heat-pumps-designed-to-save-energy

"The energy-efficiency ratings of residential air-source heat pumps have risen dramatically over the last few years, with many manufacturers now offering equipment well exceeding the 20-SEER mark. There have been significant gains made in commercial heat pump efficiencies as well, thanks to the growing demand from building owners and managers, who are looking for ways to save energy."