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 ...

LEWISBURG, Tenn. — With the introduction of the N4H6 Performance 16 heat pump and N4A7 Performance 17 air conditioner, Tempstar is continually improving on its two-stage heating and cooling product ...

An international research team has conducted the first empirical study on retrofitting PV-assisted two-stage heat pump (HP) systems in existing multi-family buildings. The research is part of the ...

Five high-performance heating and cooling solutions for consumers, including a new air conditioner, a heat pump, two gas furnaces, and a fan coil, have been added to the company’s product line. The ...

A two-stage heat-release model was developed and applied to both a divided-chamber and an open-chamber diesel engine to determine the fuel burning rates and product temperatures from measured cylinder ...

When Jack Schniepp’s furnace began to fail this winter in his two-story Bend home, he and his wife decided they’d tear it out and replace it with a heat pump. “We wanted to do it for climate-related ...

For the smart thermostat I have (an ecobee3), the answer is no. It does support two stage heating and cooling systems, but only a single zone. I think the Nest is the same. I have cheap Honeywell's, ...