Lennox built its unit to use vapor injection ... A variable-speed compressor allows the heat pump to cycle that refrigerant through more quickly when the temperature is colder.

The DoE’s Oak Ridge National Laboratory validated the performance and efficiency of Lennox’s prototype. “DoE’s Cold Climate Heat Pump Challenge calls on American businesses to make heat ...

Heat Pump market to exceed $201.5 billion by 2032 | Asia-Pacific 11.4% of CAGR by South Korea, Australia, Singapore, Japan, Malaysia, Taiwan, Hong Kong, China ...

and Midea in the U.S. Department of Energy’s Residential Cold Climate Heat Pump Technology Challenge back in 2021. According to MSN, Lennox International, Carrier, Trane Technologies ...