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York Engineered Systems, a Johnson Controls Co.: Water-to-Water Heat Pumps

Water-to-water heat pumps improve the energy utilization of HVAC systems by reclaiming heat that would otherwise be discarded. By applying a heat pump to extract heat from a low-temperature source and increasing its temperature to a useful level, water-heating costs are cut dramatically, said the company. First costs may decrease since the heat pumps can serve as both heat pump and chiller to provide both heating and cooling simultaneously. The heat pumps reduce carbon dioxide (CO2) emissions from fossil fuel use and use HFC-134a refrigerant, which has zero ozone depletion potential and no phaseout date. Four different models of water-to-water heat pumps are offered to meet a wide range of heat and temperature needs. Heat pump capacities extend to 74,000 MBtuh (22,000 kW), with a leaving hot-water temperature as high as 170°F (77°C).

York Engineered Systems, a Johnson Controls Co., Attn: Mike Duguid, P.O. Box 1592-361P, York, PA 17405-1592; 800-861-1001; www.york.com/heatpump

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