Zagers Pool and Spa Blog


Hot Tub Operations and Energy Savings

It’s never a bad idea to be energy conscious when it comes to operating a hot tub. While spas and hot tubs can differ quite a bit from one model to the next, the one constant is hot water. The key to energy savings for hot tubs is learning how to conserve heat well. This article will discuss the best ways to conserve hot water heat.

Spa Cover

The simplest way to save on heating costs is to have a functioning spa cover, and to know how to use it. Heat rises; over 85% of heat loss in a house is through the roof. Hot tubs and spas have very well-insulated shells, emphasizing how important it is to keep the top of the spa covered whenever not in use.  Secondly, the hot tub cover needs to be in good condition. If the cover has deteriorated, heat leaks will occur at the hinge and spa shell rim. Most importantly, if the cover has become abnormally heavy, this probably indicates water-logging of the foam core. A waterlogged cover is a worthless cover. A recent development is using infrared ray properties to reflect the heat back into the spa when covered. This is done by having a reflective backing on the underside of the cover.


Like a swimming pool, hot tubs are susceptible to heat loss through the wind. Essentially “upwelling,” the wind over the surface water will lead to cooler water. Wind quickens the rate at which surface water in a pool or spa becomes vapor and rises into the atmosphere. The best way to reduce this effect is to install windbreaks. A windbreak is simply a barrier to block the wind from going across the surface water. It could be landscaping, fencing, or even privacy panels.

Vacation Mode Capabilities

While this point is very simple, it still holds value. Make sure the thermostat is turned down while on vacation, even if it’s only for a couple of days.  Be mindful of the weather to prevent pipe freezing. It also might be a good idea to turn down the spa temperature when you’re using it, even if it’s two degrees. Most hot tubs are factory set at 104 degrees. Even if the temperature is set at 102, it can provide energy consumption without sacrificing leisure.

One final point of consideration is upgrading. Newer model hot tubs can offer 50% more in energy efficiency versus older models. With these few energy saving tips, hot tub relaxation can be even more enjoyable.

Have a swimming pool or hot tub related question? Contact Zagers Pool & Spa by email or phone at 616.896.1717 today!

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