- This super-efficient appliance could save you thousands on home energy costs. “The consumer’s perception is ‘heat pumps don’t work in cold climates, why would I want one? The excitement in this is around a special type of heat pump that can produce an efficient heat – even in sub-zero temperatures." https://www.cnn.com/2022/09/16/us/heat-pumps-energy-costs-lbg-climate/index.html 94 comments energy