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Water-Source Heat Pump Applications

As the most energy efficient HVAC systems on the market, water-source heat pumps (WSHPs) are uniquely simple in design. Heat is moved through an interconnected water loop and either rejected through a cooling tower, or put to work in other areas. Each unit is an independent, packaged system, eliminating the chance of a total system failure. If one unit goes down, the other units are not affected. Conveniently located above the ceiling or in a closet, units can be easily accessed.

WSHPs are ideal for a wide range of building types including office buildings, apartment buildings, hotels, condominiums, schools and much more.

WSHPs are simple to service as a residential air conditioning unit, and they have a very long life. ASHRAE estimates a more than twenty-year life expectancy. That’s because WSHPs don’t have to work as hard as other systems to move heat from one place to another. For the design of an ideal heating/cooling system that offers individual zone control, recovers and utilizes excess heat for space conditioning or alternative uses, and serves multi-tenant needs simply and efficiently, ClimateMaster water-source heat pump systems are the best choice.

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The closed-loop water-source heat pump system takes advantage of the heating and cooling requirements of each space in the entire building by recovering otherwise wasted energy in some spaces and better utilizing it elsewhere in the system.

The system is comprised of highly efficient packaged reverse cycle heat pump units interconnected by way of a water loop. Each unit satisfies the air comfort requirements of the particular zone in which it is installed. In cold weather, the heat pump removes heat from the water loop via the unit’s specially designed refrigerant-to-water coaxial heat exchanger and transfers it to the air.

Cold Weather

In very cold weather, when more heat is required than is being internally generated in the building, and most units are operating in the heating mode, heat is provided to each individual unit from the water of the loop. If more heat is needed than is naturally in the loop water, an energy efficient fluid heater attached to the loop is required.

Hot Weather

In hot weather, when most or all of the ClimateMaster Comfort System units are operating in the cooling mode, heat is being taken from the zones in the building and rejected into the water loop. If not required somewhere else in the building, the heat is rejected from the building through an external fluid cooler attached to the loop.

Balanced energy use

However, during certain times of the year, units in different zones may be operating in different modes, heating and cooling different spaces at the same time. When this occurs, heat is moved from one area to another via the water loop. During this time, the loop may not require either heat rejection or supply. This is when the system is most efficient. This is in contrast to fan coil systems which may require both a boiler and chiller to be operating simultaneously (four-pipe) or utilize inefficient atomic heat.

ClimateMaster, Inc.

7300 S.W. 44th Street

Oklahoma City, OK 73179


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