Integrated Heat Pump
An integrated heating, cooling and hot water system uses a single air-to-water heat pump. This means less space required for mechanical equipment, which is a key attraction.
However, not all heat pumps are designed for heating, cooling and hot water. Therefore, choose a heat pump that is specifically designed for multi functionality.
The Viessman Vitocal 150-A heat pump is an example of an integrated multi-function heat pump. It also integrates the heat pump with the hot water equipment in a single outdoor unit.
Integrated Cabinet
The Stiebel Eltron HSBC cabinet is another example of an integrated multi-function heat pump designed for heating, cooling and hot water. However the heat pump is an additional unit to be installed outside.
This system may be a solution for a small house block with limited space for mechanical equipment.
Install the HSBC cabinet in a cupboard or laundry for example. Pair the cabinet with the appropriate hydronic heat pump.
Information:
One Task at a Time
Keep in mind that a heat pump can only perform one task at a time.
Therefore, if you want your heat pump to heat your plunge pool or spa as well, it may be better to have an additional heat pump system.
Space Saving is Key
Factor in rebates offered for stand alone hot water heat pumps. These are not offered for integrated systems. Check the difference of the net installed price.
You may find negligible difference between one integrated system and two systems for heating / cooling, and hot water. Therefore, space saving will likely be the key decision factor.