Split and ducted systems
Mini-split and ductless HP
Single Packaged Systems
Bivalent (gas burner supported)
Split heat pumps
Split heat pumps systems utilize one outdoor and one indoor unit, both containing a heat exchanger coil connected with the refrigerant lines, usually made of copper and a ducted system for heat distribution.
Thanks to the advanced features, the split systems can be used in all climates, from mild to freezing regions, and it is the most favorable type installed in residential housings.
Mini-split heat pumps
Air to air heat pumps designed as mini-split are mainly used for local room heating/cooling, where the ductwork does not exist or cannot be installed. These are known as ductless heat pumps and, due to their small size, are easy to handle and install –on the wall or ceiling.
Mini-splits are recommended for retrofit in homes with hydronic and electric baseboard heating. They usually have one outdoor unit and one or more indoor for multizone climate.
As opposed to the above split systems, there is also a packaged system that combines all the components into one system located outdoor, while the cooled or heated air is transferred to the house using the ventilation ducts.
The main advantage of these systems is that the unit is installed outside (rooftop, for example), which helps in noise reduction; it can serve different zones and allows quick installation and servicing.