What Hot Tub is Most Energy Efficient?

If you are thinking about purchasing a hot tub, choosing an energy efficient model is likely a top priority on your checklist. Many new hot tub owners are concerned about how much their energy costs may increase, however, the good news is that today there are plenty of energy efficient models to choose from which are affordable to run. In the article below, we will discuss how to find an energy efficient model and which hot tub is the most energy efficient.

Choose Eco Modes and Pumps

To help save energy, choose a hot tub model that has eco modes. These models operate at a lower temperature when the hot tub is not in use, which reduces energy consumption. If your model does not have this feature, you can use a timer which will reduce the water temperature at certain times when it is not in use (like overnight.) A final option is just lowering the temperature by a few degrees to save on your energy bill.

The style of pump that a hot tub is equipped with also plays an important part in your overall energy consumption. Circulation pumps use less energy than jet pumps – in fact, they can use as little energy as a 40 watt light bulb does!


Just because a hot tub has a sleek design and may appear to be energy efficient, doesn’t mean that it is. Insulation is an extremely important factor and the most energy-efficient models will be fully insulated with high density, high-quality insulation, rather than partial coverage.

Quality Covers

To maximize energy efficiency, choose a model with a lockable, heat shield hardcover which will retain heat and prevent cold air from entering the tub. The best covers feature a tapered design and have insulated baffles around the fold.

Adjustable Venting

Energy efficient hot tubs are able to trap heat and reuse the pump/motor waste to continue heating the water. Venting is another way that can reduce energy costs year round, to trap or vent heat as needed to maintain an ideal temperature naturally.

The Most Energy Efficient Hot Tubs

If you want to make sure that you are purchasing the most energy efficient hot tub on the market, be sure to choose a CEC (California Energy Commission) approved model. In fact, Hydropool was one of the first CEC approved hot tubs on the market and is committed to providing exceptional energy efficiency technology. Our CEC models can be run for just a few cents per day.

Monthly Costs

If you want to estimate how much energy your hot tub will use on a monthly basis, there is a simple formula that will give you a good ballpark idea. Locate the wattage of the hot tub model (usually on the label) and multiply by the number of hours you intend to use your hot tub each day and divide by 1000 to determine the daily kilowatt hours for the hot tub. Next is locating your current utility kilowatt rate and multiplying your daily number by 30 to get your monthly estimate.

Now that you know which hot tubs are the most energy efficient, learn more about the variety of models available by downloading a hot tub buyer’s guide from our main page.