A heat pump works by transferring heat from one location to another. In the case of a hot tub, the heat pump extracts heat from the outside air and transfers it to the water in the tub. Heat pumps are efficient because they use electricity to move heat, rather than generating it directly, which is less energy-intensive.
The heat pump contains a refrigerant that absorbs heat from the outside air. The refrigerant then travels through a compressor, which compresses it and raises its temperature even higher. The hot refrigerant then passes through a heat exchanger where it transfers its heat to the water in the hot tub. The cooled refrigerant then passes through an expansion valve, which reduces its pressure and temperature, allowing it to absorb more heat from the outside air and start the process again.
This process is known as a refrigeration cycle, and it can be used to heat or cool a space or a fluid like water. In the case of a hot tub, the heat pump is used to heat the water to a desired temperature. It can also be used to cool the water which can get temps low enough where the hot tub can double as a cold plunge. The cooling ability is also a nice feature for extremely hot ambient temperatures such as the case with places like Arizona in the summer time where ambient temps can exceed 110 degrees.
Here are some examples of hot tub manufacturers utilizing heat pump in their hot tubs or swim spas:
- Wellis Spas
- Passion Spas and Passion Spas Cold Plunge
- Hot Spring Spas
- Atera Spas and Atera Swim Spas
- Hot Tub or Cold Tub?
For more information visit our hot tub buyer’s guide pages. Also, click on the pink boxes and complete our free local quote form to get competitive prices from local dealers in your area. Or click our “Spa Buyer’s Consult” link above to get one on one expert advice on the best swim spas available in your area.