Heat pumps can be applied in many situations where low temperature heat is freely available and a load is present to accept that heat at a higher temperature. Heat pumps are used for space heating, domestic water heating, heat recovery ventilation, and even recovering useful heat from sewer effluent.
Most heat pumps used for space heating also have the ability to provide cooling and dehumidification. Thus, selecting a heat pump for space heating often displaces the need for a separate cooling system, as would be required for hydronic systems using boilers.
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