With energy prices continuing to change in the UK, many hot tub owners are keen on finding smarter ways to enjoy their spa. The good news is that by making a few simple tweaks, you can make your hot tub more energy-efficient, especially during the summer months when the heating requirements are lower.

These energy-saving tips are designed to help all hot tub owners, whether you are a novice or a pro, keep their hot tubs functioning efficiently.

Lower the hot tub temperature

During summer, there’s little need to keep your hot tub at 40°C. Dropping it down to 36–37°C still provides a relaxing soak but uses significantly less energy.

Pro tip: Try lowering the temp even further during the day, then bringing it up slightly in the evening when you’re more likely to use it.

Use a Timer or Energy-Saving Mode

Most modern hot tubs have a timer or eco mode, take advantage of it! You can reduce heating and filtration cycles during periods when the tub isn’t in use.

What to check:

  • Off-peak filter cycles
  • Energy-saving or sleep settings in your control panel
  • Programmable start/stop times

Keep Filters Clean

Dirty or clogged filters force your system to work harder, using more electricity.
Give your filters a quick rinse weekly and a deep clean monthly for better efficiency and cleaner water.

Read more: How to Clean Your Hot Tub Filter

Cover It Up – Always

Your hot tub’s cover is one of your best tools for retaining heat. Make sure it fits well and has no tears or sagging sections that let warmth escape.

  • Use a thermal floating blanket for added insulation
  • Close the cover immediately after use
  • Clean and condition the cover monthly to prolong its lifespan

Position for Shade and Shelter

In summer, the sun helps warm the water – but direct exposure can overheat components and force cooling cycles to kick in.

A shaded pergola or parasol helps regulate temperature and extends the life of your cover. Likewise, placing your hot tub near a wall or fence provides wind protection, which also reduces heat loss.

Stay on Top of Water Chemistry

Balanced water is easier to heat and keep clean. If your pH or sanitiser levels are off, your system may need to work overtime to maintain clarity and hygiene.

  • Test weekly
  • Use quality spa chemicals
  • Keep the water topped up to maintain optimal circulation

Run Off-Peak If You’re on a Variable Tariff

If your energy provider offers an economy or time-of-use tariff, schedule heating and filtration to run during cheaper, off-peak hours (often overnight).

Check with your energy supplier for current off-peak times and see if switching tariff might save even more.

Final Thoughts

A hot tub should be a source of relaxation – not financial stress. With a few mindful adjustments, you can enjoy all the health and wellness benefits of hydrotherapy this summer without worrying about energy costs.

From smart covers to cleaner filters and timing your cycles, these energy-saving tips are simple to implement and can lead to real savings over time.

Looking for a more efficient model?

Visit our Hot Tubs collection to explore energy-smart upgrades – or drop into our Manchester showroom for tailored advice.