Maintaining the Ideal Hot Tub Temperature

When you’re ready to climb into the hot tub to warm up, to melt away tension, or to spend time with loved ones, you want it to be ready for you. You don’t want to have to wait. Otherwise, what’s the use of having a hot tub at home? While in-ground hot tubs, which are traditionally kept uncovered at all times, are difficult to maintain at a constant high temperature, it’s easy to keep portable hot tubs heated and ready for use.

The best way to prep your tub so it will always be ready is by spending some time finding your most comfortable settings. Believe it or not, the best way to approach your preferred hot tub temperature—for the life of your spa, for your convenience, and even for your wallet—is to set it at that temperature and keep it there.

What Is the Ideal Hot Tub Temperature?

While the ideal hot tub temperature varies from person to person and depends on factors such as age and personal preference, there are some recommended standard guidelines that are important to observe. Here are some helpful tips to help you find the ideal hot tub temperature for yourself and your family:

  • Don’t Exceed 104 Degrees for Adults

The US Consumer Product Safety Commission has determined that temperatures above 104° Fahrenheit (40° Celsius) are dangerous for adults because they can lead to heat stroke. In general, people are most comfortable with temperatures between 100° and 102° (37.5–39°). Adults are safe to soak at these moderate temperatures for twenty minutes at a time. Recommendations for maximum temperatures for children, pregnant women, and people with some medical conditions are lower.

  • Set the Water Lower for Children

Start the water temperature at 95° Fahrenheit (35° Celsius) when children are in the tub, and don’t exceed 98° (36.5°). Children are more sensitive to the effects of heat, so it’s best not to subject them to water temperatures higher than the average body temperature. Although adults can soak for a maximum of twenty minutes at a time, it’s recommended that children limit their soaking time to ten minutes. While it’s important for everyone to stay hydrated when using the hot tub, it’s especially important to ensure kids drink plenty of fluids before, during, and after family spa time. If at any time children appear to be feeling discomfort, carefully help them out of the water and have them sit down and drink some water. Talk with your child’s pediatrician for more specific advice on hot tub usage for children.

  • Practice Caution if You Are Pregnant or Have Other Sensitive Conditions

Pregnant women are strongly encouraged to discuss hot tub safety with their doctors before using a spa. The spa water should never exceed 100° Fahrenheit (37.5° Celsius) for a pregnant woman, though she may find she prefers the water temperature even lower. If you’re pregnant and have the approval from your doctor to use a spa, don’t soak for more than ten minutes at a time, and be sure to drink plenty of water.

Likewise, individuals with medical conditions including high blood pressure, heart disease, or diabetes or other circulation issues should first speak with their doctor to determine whether it’s safe to spend time in the hot tub and, if so, what the ideal water temperature and soak time would be. This same advice applies to anyone who is taking prescription or over-the-counter medications, particularly those that cause drowsiness.

How to Find Your Ideal Hot Tub Temperature

When you’re scouting out your personal ideal hot tub temperature, it’s best to start low, as it’s easier to bump it up than to bring it down once you’re already uncomfortable. Set the controls to 98° or 99° and increase it in gradual increments depending on your comfort level. It’s important to listen to your body and to get to know your personal comfort zone. If you have more than one person in the tub at a time, set the temperature to the lowest preferred—or lowest recommended—temperature of everyone in the group.

There may be times when you’ll want to proactively decrease the temperature by a few degrees—or by many degrees, if you’re recovering from strenuous exercise. Consider lowering the temperature of your tub in advance if any of these circumstances apply:

  • You’re planning to build up your own body heat in the tub through physical activity like stretching or yoga.
  • You’re already overheated from activity, illness, or a particularly hot day.
  • You’re inviting children or other heat-sensitive individuals into the hot tub.

Your spa can even become a refreshing soak during warm summer months if you turn the temperature down well below the average body temperature. Some hot tubs are capable of lowering the water temperature quickly and efficiently by using a system such as the CoolZone, which can be an especially welcome and refreshing option in warmer climates. In general, it’s simpler and more efficient to leave your hot tub constantly set to your desired temperature than it is to lower it when the tub is not in use. This is especially true for today’s advanced and energy-efficient models, which feature insulated shells that prevent heat from escaping and close-fitting insulated covers that protect your spa from outside elements.

You now have everything you need to start exploring your ideal home spa environment. If you have more questions about finding the right hot tub temperature, your knowledgeable local dealer has the answers. You’re well on your way to a blissful soaking experience.

Caldera Spas® offer the latest in quality hot tub systems, energy-efficient technology, and intuitive controls. Visit us to find out more about our model options and the many benefits of regular hot tub therapy. You can also request a price quote or download a brochure here.

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