Resources

What is a two-stage heat pump? A two-stage heat pump, also called a dual-stage heat pump, utilizes a two-stage compressor. It has 2 levels of intensity – high (100%) and low (typically 70%). The heat […]

What is a variable-stage heat pump? A variable-stage heat pump utilizes a variable, or modulating, compressor. It can vary its levels of intensity incrementally. While single-stage heat pumps have 1 speed (full blast) and two-stage […]

What is a vertical ground loop? A vertical ground loop is a series of plastic underground pipes filled with a heat-transfer fluid and installed in one or more boreholes about 200 to 500 feet deep […]

What is a water-to-air heat pump? Water-to-air heat pumps transfer the underground heat energy from hot water to the indoor air distributed through a building’s ductwork. When a hotter material comes into contact with a […]

What is a water-to-water heat pump? Water-to-water heat pumps transfer the underground heat energy from hot water or steam to indoor hot water or steam. This hot water or steam is then distributed within homes […]