There are many different options: single-split heat pumps (where one indoor unit connects to one outdoor unit), multi-split heat pumps (where multiple indoor units connect to one outdoor unit), and ducted heat pumps (where warm air blows through ducts, either to ducts in the entire building or specific zones).
Different heat pump models also have varying degrees of energy efficiency, which is a major factor for most homeowners or property owners when choosing any appliance. Most models will come with an Energy Rating Label assigned by Energywise, a government agency. These can help those purchasing a heat pump to find one which will cost less to run in the long term—and have a smaller environmental footprint too, which is a bonus!


