What is the definition of a multiple heat pump system? A multiple heat pump system is a type of HVAC system that uses multiple heat pumps to heat and cool a home or other building. It typically consists of two or more separate heat pumps, each of which is responsible for a different part of the home or building. One heat pump will be responsible for providing cooling in the summer, while the other will provide heating in the winter. This is a more efficient and cost-effective solution than using a single heat pump for both heating and cooling. Additionally, multiple heat pumps can be used to minimize energy use in different parts of the home or building. For example, one heat pump can be used to cool the bedrooms while the other can be used to heat the living room. Multiple heat pumps are also used to help maintain a consistent temperature throughout the home or building and ensure that each room or area gets the right amount of cooling or heating. The use of multiple heat pumps can help reduce energy