You can read more here. We’re entering the era of the heat pump. The concept behind heat pumps is simple: powered by electricity, they move heat around to either cool or heat buildings.

But a heat pump can reverse that process in the winter. Colder temperatures put pressure on the system’s refrigerant.

Lennox Residential HVAC has launched an extreme cold climate heat pump that warms with low GWP refrigerant in temperatures as low as -20F.

A group of researchers in Thailand outlined a new methodology to identify the optimal temperature in two-stage cascade heat pumps using non-azeotropic refrigerants. Through their analysis, the ...