The U.S. Department of Energy (DOE) has recently announced a breakthrough technology with the American heat pump manufacturer Lennox International to heat homes in northern climates with a more efficient next-generation heat pump. Lennox International is the first partner of the DOE's Residential Cold Climate Heat Pump Technology Challenge. Lennox has developed the first prototype and is one of nine U.S. manufacturers competing in this challenge. This achievement is crucial to reducing energy costs and achieving President Biden's goal of a net zero carbon economy by 2050. Cold climate heat pumps (CCHPs) can provide high-efficiency heating in freezing temperatures without producing greenhouse gas emissions and can save families as much as $500 a year on their utility bills.