With Zavepower, you save on heating costs for your hot tub, as you can heat your hot tub using only low-cost hours of electricity from the stock exchange. The easy-to-use service allows you to set your desired target temperature and the maximum price at which your hot tub will be heated. The service works via a web browser. Zavepower can be ordered as a factory-fitted accessory or retrofitted to your hot tub. The Zavepower unit installed in your hot tub is WiFi enabled, so you need to have a WiFi connection at your pool.