reverse cycle heating and cooling

https://future-wiki.win/index.php/Choosing_a_Reliable_Heating_and_Cooling_Service_for_Your_Home

Reverse cycle heating and cooling is a smart way to keep your home comfortable year-round. Basically, it's a single system that can both warm and cool your space by reversing the flow of refrigerant. In winter, it pulls heat from the outside air and pumps it inside, even when it's cold. In summer, it does the opposite, removing heat from your home. This makes it energy-efficient, though performance can drop in extreme cold. It works well in moderate climates and can save on installation costs s…