A mini-split unit creates heat through a process called heat pump technology, specifically known as air-source heat pumps. Here's how it works:
1. **Refrigerant Cycle**: Like a typical air conditioner, a mini-split system contains a closed-loop refrigerant cycle. This cycle consists of a compressor, condenser, evaporator, and expansion valve.
2. **Heat Extraction**: During the heating mode, the outdoor unit (condenser) extracts heat from the outside air, even in cold weather. This process is possible because there is still some heat energy in the air, even when it's cold.
3. **Compression and Release**: The compressor pressurizes the refrigerant gas, which causes it to become very hot. This hot gas is then sent to the indoor unit (evaporator).
4. **Heat Distribution**: Inside your home, the indoor unit releases the heat absorbed from the outdoor air. A fan blows indoor air over the warm coils, and the heat from the refrigerant is transferred into the indoor air.
5. **Circulation**: The warm air is then distributed throughout the room or area you want to heat via a fan, providing comfortable indoor temperatures.
This process is energy-efficient because it moves heat from the outside to the inside, rather than creating heat through combustion (as in traditional furnaces), making it an eco-friendly and cost-effective heating solution, especially in moderate climates.
While they may be less efficient in extremely cold climates, they are generally effective for heating in moderate to cold conditions. However, their heating performance may vary depending on the specific model and climate conditions, so it's essential to choose the right size and type for your needs.
