Energy-Efficient Hot Tub Tips: Save Money Without Sacrificing Comfort

Owning a hot tub is one of life’s simple pleasures—a place to relax, unwind, and rejuvenate after a long day. But keeping your spa warm and ready can raise your energy bills if you’re not careful. The good news is, you don’t have to give up comfort to save money. With a few smart maintenance habits and simple upgrades, you can make your hot tub far more energy-efficient without compromising on performance.

Here are some of the best ways to cut energy costs while keeping your spa perfectly heated and ready whenever you need it.

1. Keep the Temperature Consistent

It may seem logical to turn down your hot tub temperature between uses to save energy, but reheating cold water can actually cost more. It’s best to maintain a consistent temperature between 100–104°F if you use your spa regularly. Modern hot tubs are well insulated, so maintaining heat is more efficient than repeatedly reheating the water from a lower temperature.

If you only use your hot tub on weekends, consider setting it to a lower “eco” mode or reducing the temperature slightly (to around 95°F) during the week. This strikes a good balance between energy savings and comfort.

2. Invest in a High-Quality, Insulated Cover

Your hot tub cover is the most important tool for conserving energy. A well-fitted, insulated cover keeps heat from escaping, prevents water evaporation, and reduces the strain on your heater.

Inspect your cover regularly for cracks, tears, or waterlogging, as damaged covers lose insulation and allow heat to escape. When it’s time for a replacement, look for a cover with a thick foam core, a tight seal, and a durable vinyl exterior.

You can also add a floating thermal blanket under the main cover to trap even more heat and minimize evaporation.

3. Check and Maintain Your Water Chemistry

Balanced water chemistry doesn’t just keep your spa clean—it also helps it run more efficiently. When pH or alkalinity levels are off, scale or corrosion can form inside your plumbing and heating system. This buildup forces the heater and pump to work harder, using more energy.

Test your water 2–3 times per week, and keep the following levels in range:

• pH: 7.2–7.8

• Total Alkalinity: 80–120 ppm

• Sanitizer (Chlorine/Bromine): Proper levels as directed

Regular water testing ensures your system stays efficient and your components last longer.

4. Clean or Replace Filters Regularly

Dirty or clogged filters make your pump and heater work harder than necessary. Clean your filters every two weeks with a gentle rinse, and deep clean them once a month using a filter cleaner. Replace them every 12–18 months or sooner if they show signs of wear.

Clean filters promote proper water circulation and reduce strain on your system, saving energy over time.

5. Schedule Heat Cycles During Off-Peak Hours

If your utility company offers off-peak electricity rates, take advantage of them by setting your hot tub to heat during those hours. Many modern spas allow you to schedule heating and filtration cycles. Using electricity during off-peak times can lead to noticeable savings without changing your hot tub habits.

6. Add Wind Protection Around Your Spa

Wind can quickly strip away heat from your hot tub’s surface and outer cabinet. Creating a windbreak—such as a privacy fence, landscaping, or even a pergola—helps reduce heat loss and makes your soaking experience more enjoyable.

Just make sure any barriers are positioned safely and don’t block access to your equipment or ventilation areas.

7. Upgrade to an Energy-Efficient Pump or Heater

If your hot tub is older, upgrading to a modern, energy-efficient pump or heater can dramatically reduce energy usage. Newer models often feature variable-speed pumps and improved insulation that allow them to heat faster and maintain temperature with less electricity.

At Pallett Pool and Spa, we can help you explore upgrade options that fit your budget and spa model.

8. Use an Energy-Saving Mode When You’re Away

Many hot tubs feature a “sleep” or “eco” mode that lowers the temperature slightly and reduces circulation cycles when the spa isn’t in use. This feature can save energy while keeping the water clean and ready for use when you return.

If you’re going on vacation or won’t use your hot tub for a few weeks, use this setting or reduce the temperature to around 90°F to save energy safely.

9. Keep Your Hot Tub Well-Insulated

Heat loss doesn’t just occur from the water surface—your hot tub cabinet can lose heat, too. If your spa is located outdoors or in a colder climate, check the insulation inside the cabinet and around the plumbing. Adding spray foam insulation or insulated panels can make a noticeable difference in retaining heat.

For portable or above-ground spas, consider placing a foam pad or insulating mat beneath the hot tub to prevent heat loss through the base.

10. Schedule Regular Professional Maintenance

Even with great habits, professional maintenance is key to long-term efficiency. A trained technician can check your system for leaks, ensure your heater is operating properly, and spot early signs of wear before they become costly problems.

At Pallett Pool and Spa, our service team specializes in seasonal maintenance and energy-saving solutions to keep your hot tub performing at its best year-round.