Why does my Cal Spa overheating
Andrew Campbell
Updated on April 10, 2026
What Causes a Spa to Overheat? Low water flow (LF, FLO), is the usual cause of an overheating (OH, OHH) spa or hot tub. When water doesn’t flow fast enough through the heater, the heater stays hotter, and the temperature of the water increases. … Low water level in spa, and skimmer is sucking air.
How do I stop my hot tub from overheating?
- Turn Down the Temperature. The most straightforward solution to hot tub overheating is to simply turn down the temperature of your hot tub. …
- Add Cool Water. …
- Don’t Run Your Filter When It’s Hot. …
- Add Some Shade.
Why does my hot tub temp keep going up?
The leading cause of going over temperature is down to the electric motors. … When the electric motor runs, it generates heat. The emitted heat is then transferred into the hot tub water, raising its temperature over the desired temperature. This is exaggerated in the summer as we usually run our hot tub a little cooler.
Why is my hot tub getting too hot?
A simple cause of hot tub overheating is the hot tub’s temperature may be set too high. … So, if the hot tub is set to filter too many hours per day, it can cause overheating. Adjust your filter cycle duration cycle down and set it to run early AM and late PM, when the outside temperatures are coolest.How do I reset my Cal Spa hot tub?
Check water level in spa. Refill if necessary. Make sure pumps are been primed and filter cartridges are clean. Press any button to reset or wait 15 minutes and spa will automatically reset.
What is the hottest temp for a hot tub?
The maximum temperature of any given hot tub is almost always 104 degrees. On the other hand, most hot tubs have a minimum temperature of about 85 or 90 degrees. There are exceptions, though. Some hot tubs, such as those which use AnyTemp® spa technology, can reach temperatures as low as 62 degrees.
How do I cool down my hot tub?
- Lower the Water Temperature. Your hot tub temperature usually hovers around 100 degrees, so dial down the temperature to 85 degrees to cool off the water. …
- Stay Hydrated. …
- Apply a Cold Compress. …
- Soak in the Shade. …
- Wait Until Sundown.
What temperature should a hot tub be set at in the summer?
Setting Hot Tub Water Temperature in the Summer As a rule of thumb, many users keep their hot tub set at temperatures ranging between 97-99 degrees.What temperature should I set my hot tub when not in use?
Get A Quote Today: 713-777-7665. What is the right hot tub temperature when not in use? A rule of thumb is that the temperature should be at least 5 degrees lower than when in use. It is necessary to keep it at lower temperatures when it’s not in use so that energy consumption isn’t too high.
Why do hot tubs have 15 minutes?Hot tubs have seats at various levels for a reason–to allow you to move around and cool various parts of your body. If you sit at the lowest level for 15 minutes or more, you allow your core body temperature to rise a lot faster than it would if, say, you moved to a seat at which your upper torso was out of the water.
Article first time published onWhy is my hot tub dropping temperature?
low speed/circulation pump. pressure switch or thermostat. mode setting – could be set on Economy or Sleep which will not maintain the temperature – set on Standard. or even simply that there is not enough water in the Hot Tub or jets closed.
Where is the reset button on a Cal spa?
Note that all spas don’t have this feature. Clear any blockages or debris covering the drain or Cal Spa filter, then reset by depressing any button located on the top side panel.
What mode should hot tub be on?
We reccommend setting your spa to “Auto” so that the water is always warm and ready for you to use. If you ever notice that your hot tub water temperature has dropped, but there are no error messages displayed on your control panel, you should check that the spa is set to “Auto” mode.
How do I know if my hot tub circulation pump is working?
Check that your power is on, the breaker or GFCI test button are not tripped, all valves are in the open position. Follow the circ pump plumbing, and look for any kinks in the hose. Pull out the cartridge filter to see if flow improves and the circulation pump is doing better.
Should a hot tub be in the sun or shade?
It’s important to take care of your hot tub in summer to avoid overheating and damage from the sun. Regular cleaning can help maintain your hot tub cover, as well as providing shade so your tub isn’t in direct sunlight.
Can you keep a hot tub cool in the summer?
While many hot tub users prefer to keep their hot tub water hot year round, every summer, some users look for ways to cool down in their spas. Usually, that involves turning off the heater and letting the water slowly cool over time. … It works much like an air conditioner, cooling hot tub water to as low as 60 degrees.
Can you put ice cubes in a hot tub?
Contrary to what people think, ice does not harm your hot tub and is a fast way to cool down your tub before a party. Just make sure you follow the steps above before adding ice – it won’t do much good if the temperature is 103º with the cover on!
Is 104 degrees too hot for hot tub?
Hot tub water temperatures should never exceed 104 degrees Fahrenheit. … Excessive drinking during hot tub use can cause drowsiness which could lead to unconsciousness and subsequently result in drowning.
Is 30 degrees too cold for a hot tub?
Personal preference Your hot tub factory settings will be at 38 degrees, but body temperature of 37 degrees is a generally good start for your hot tub. It’s regarded that women tend to like it slightly hotter at 38 – 39 degrees. This may be that women on the whole tend to feel the cold more than men.
Should I leave my hot tub on all the time?
One question we sometimes get asked is should I leave my hot tub on all the time? The answer is yes! Hot tubs are designed to be left on permanently and this is how they work best. Of course, they’ll need to be drained regularly but for the most part, they are left on 24/7.
Is 40 degrees too hot for a hot tub?
Spa temperatures over 40 degrees Celsius (104F) can be dangerous to your health and safety. It can lead to high body temperature, dehydration or hyperthermia.
Are hot tubs full of germs?
1. A lot of germs and pathogens survive in hot tubs. When you get in a hot tub, everything on your body ends up in the hot tub, too— including sweat, dirt, oil, grime, bodily fluids. A lot of this stuff is harmless, but a surprising number of people carry pathogens, or germs that cause disease.
How often should I drain my hot tub?
Draining and refilling your spa will be an important aspect of spa ownership. Many spas need to be drained and refilled every three to four months due to chemical build-up.
Is 94 too cold for a hot tub?
For most warm water therapy, a temperature below the body temperature 98.6° is desirable, something between 92-94°.
Can you use a hot tub in the winter?
Winter is a wonderful season to use a hot tub. … New, energy saving hot tubs stay hot and ready all winter, without adding to your electric bill. Insulation and a quality spa cover keeps the heat in, so there is no need to winterize with proper upkeep. Most freeze damage is caused by water left in the spa.
Do you lose weight in a hot tub?
A daily soak in your hot tub can help you lose weight, even if it’s in an indirect way. If you weigh around 150 pounds, you can normally burn up to 17 calories or . 005 pounds of fat by simply submerging yourself in your hot tub for 15 to 20 minutes.
Is sitting in a hot tub healthy?
Health Benefits The heat widens blood vessels, which sends nutrient-rich blood throughout your body. Warm water also brings down swelling and loosens tight muscles. And the water’s buoyancy takes weight off painful joints. A dip in the hot tub might also help your mental state.
Is it OK to go in a hot tub every day?
However, it’s completely OK to use a hot tub every day. In fact, many of the benefits of a hot tub only become apparent when it’s used on a regular basis. To make sure you get the most use out of your hot tub we’ve come up with a post on what you can do to ensure your hot tub use remains consistent.
How do I know if my heating element is bad in my hot tub?
To test if a bad heater is causing your tripped breaker, you can disconnect the copper tabs (or wires) from the spa pack to the heater element. Once disconnected, turn the power back on. If the breaker stays on, you‘ve determined that the heater is bad. Find a replacement heater element.
Does hot tub heat up faster with jets on?
A hot tub heats up faster if the jets are turned on. This is because the water circulates with the jets on, which evenly disperses heat and prevents cold water from being trapped in the hot tub pipes.
How can I make my hot tub heat up faster?
- Leave the cover on. …
- Turn the jets on. …
- Use a thermal spa blanket. …
- Put a pop-up canopy tent around the tub. …
- Wait for a warm day. …
- Fill up with warm water. …
- Use a portable immersion heater.