As an example of how water-source heat pumps can handle a variety of different applications, the building shown to the right is a fictional bronze statue foundry company in the mid west portion of the United States. The first floor comprises their production floor and office space. The second floor of the building is reserved for future use. The cooling tower and boiler work as needed to maintain an average loop temperature between 60 to 95°F [15 to 35°C].
Water-source heat pumps can efficiently operate in either heating or cooling mode under these conditions. This gives individual and specialized zone control for maximum comfort and the ability to change operation modes as needed.
A mixture of units in heating mode and units in cooling mode create a constant temperature in the water loop. In Balanced Mode, there is no need for heat injection or rejection via the boiler or cooling tower. The heat is simply moved from one zone to another.