Heat pumps, by contrast ... traditional water heating methods to energy-efficient air-source technology. High-Efficiency Operation Designed to meet NEEA Tier 4 and CEE Advanced Tier specifications ...
The DOE Residential Cold Climate Heat Pump Challenge aims to develop high-efficiency heat pumps that perform at temperatures as low as -15 F, offering a sustainable alternative to conventional ...
For each unit of energy input, you can get 2-3 units of heat output. Properly installed heat pumps can reach over 300% efficiency in some cases. A high-efficiency gas furnace can only be 98% efficient ...