Split Air to Water
The split heat pump, or refrigerant split, has its heat exchanger inside the building. There is an outdoor unit that houses most of the refrigerant circuit, with refrigerant pipes going inside to heat the system water at the indoor unit.
Some systems allow distances of 50 meters from the building allowing much greater installation flexibility.
Water doesn’t go outside so no risk of freezing.
Pros
Small outdoor unit
Installation flexibility
No antifreeze requirement
Better flow rates due to shorter primary piperun
Cons
Requires F-Gas installer
Less market availability
Requires indoor unit
