If you have a pool maintenance service, be sure to check with them before reducing filtration hours. Have your filter pump operation checked yearly by a qualified pool maintenance company. A malfunctioning filter pump costs more to operate. When it's not needed, switch off your aerator, the device that adds bubbles to the water jets. In some climates, a solar heating system is an alternative way to heat your spa.
Spas require solar panels with at least two times the surface area of the spa.
A back-up heating system is required. Solar heating systems work only during daylight hours and will not heat the spa at night.