How Long can a Hot Tub go without Power?

Hot Tubs are not only completely molded but also entirely insulated. If you lack electricity, simply encompass your hot tub until the power is restored. During the winter, it is recommended that the temperature be kept at a level of 100 degrees.

If there is a power interruption, temperature loss is low, and the system will reheat as the power is restored. All hot tubs built before 1997 will have the temperature mechanically adjusted to 100-102 degrees. There’s no need to re-programme anything. Let’s take a deep dive on How Long can a Hot Tub go without Power?

How Long can a Hot Tub go without Power

During a power failure, emptying a hot tub will result in freezing damage. A store Vacc or blowers is the only means to remove any leftover water from the machine and inner lines (which require electricity).

How Long Can a Hot Tub Go Without Power?

Of course, it varies with the size of the tub, but is estimated to remain warm between two and six hours, possibly longer if it’s a large tub. It also varies on how well the tub is insulated. In the summer, a proper new hot tub with a solid insulating cover might keep you warm all night.

You might even be able to use it before turning it on to heat the water early in the morning. The majority of individuals keep their hot tub at a temperature of 102° to 104°.

If the spa lacked electricity, you’d have about 7-10 days if you started at that temperature. If there is a power outage, keep the covering on and only lift the cabinet door when necessary.

Will Hot Tub Freeze if Power Goes Out?

To start freezing a completely foamed hot tub, the temperature should be below 28 degrees Fahrenheit for at least 36 hrs. Even if it gets that cold, if your hot tub and compressors are still running, the water will not freeze because it is moving.

Your hot tub can’t freeze overnight. It takes an average of more than seven days for your hot tub to freeze. Your hot tub is made up of several components. The majority of them come into contact with water.

This implies that during power outages and exceptionally cold temperatures, each of them would be at risk of freezing. Other areas of the hot tub can freeze overnight. Because it is less shielded, the equipment compartment is usually the most prone to freezing.

How do You Keep a Hot Tub From Freezing during a Power Outage? 

If you’re unsure on what needs to be done with the hot tub every time, the electricity goes out, keep these hot tub dos and don’ts in mind.

  1. Always keep your hot tub top on. When compared to cold weather, heat storm electricity disruptions offer one benefit: your hot tub water is less prone to freeze and crack. If you’re worried about the frost in the nighttime air, drape your hot tub top with some heated blankets or sleeping bags.
  2. Never remove the cover from your hot tub. Leave the lid on your hot tub shut to maintain the warmth, just like you would your refrigerator to wait out the power outage (for now). If you’re worried about the temperature of the water, think about investing in advanced devices such as the SmartTubTM System, which delivers temperature data to your smartphone.
  3. Continue to fill your hot tub with hot water. Do you get worried when there’s a power outage because of the severe cold? Remove part of the hot tub’s cooler water. Then connect your water hose to your interior water faucet using an adaptor and replenish the tub with hot water. Lift the lid just enough to get the hose in; don’t pull it up.

What Happens if You don’t Winterize Your Hot Tub? 

Winterizing a spa that has been sitting dormant for months due to the cold is often the only realistic answer. It’s not enough to just drain the spa. After draining, up to 6 liters of water may linger in the pumps and piping. This water has the potential to freeze, expand, and break piping and apparatus.

A spa specialist can close your hot tub for you if you can’t winterize it or if you’re using an in-ground spa. Seek an experienced technician who offers a freeze-damage warranty on their services.

There’s no requirement to winterize your hot tub if you think you’ll just use it once a week to once every few weeks, regardless of the weather.

Can You Put Antifreeze in a Hot Tub? 

If you’re shutting off your hot tub for the wintertime, you can add antifreeze to it. When the temperature dips far below zero, winterizing a hot tub keeps pipes from chilling and breaking, and antifreeze could be used in this procedure as far as no one utilizes the hot tub after it has been poured.

However, there’s a lot more to understand about winterizing a hot tub, including how and where to apply antifreeze, as well as some of the potential risks of doing so. Never use antifreeze in a hot tub that contains Ethylene Glycol, such as the kind you’d find in your car. It’s poisonous.

This process can be guided by the user manual or your hot tub supplier. When you get home from a trip, you’ll have to clean out your tub of any antifreeze residue before it becomes suitable to use. Load your spa with water as regular, then pour twice as much chlorine to neutralize the antifreeze.

Empty and replenish your spa one more before replacing your new filter capsules. This technique will be outlined in your owner’s manual or by your hot tub dealer.

Can a Frozen Hot Tub be Repaired? 

When you go outdoors to use your hot tub, you notice it has iced over. Continue reading to learn what you can do in this case.

Step 1: Drain the Water from the Hot Tub

The hot tub must be dry both inside and out. Start by doing anything you can to defrost the top chunk of ice– your hot tub is unlikely to be entirely frozen. In this circumstance, a heat gun can be useful, but heat the ice gradually so it doesn’t fracture the hot tub walls. A wet/dry Vac can also help you get rid of the water quickly. If your pipes are frozen, make sure they are heated and drained.

Step 2: Examine the Area for any Damage

If the freezing was current, you may rescue a few of the parts. Fortunately, freezing damage that is diagnosed early can typically be easily repaired. Damage to the pipes, compressors, spa bags, as well as other tiny pieces must be looked for. Ensure the tub’s edges are free of fractures. The tub may be above restoration if it’s been frozen for an extended amount of time.

Step 3: Keep Your Freezer from Freezing in the Future

Maintain a low pace in your spa on all occasions to keep the water moving and avoid freezing. If you turn off your spa in the winter, it will ice over and do extensive damage.

Here’s another common question I face about hot tub that you may also like to know: Does a Hot Tub Heat Faster with Jets On?


We hope now you have a clear idea about How Long can a Hot Tub go without Power? but If the electricity has been out for an extended period, you may have to take additional steps. Partially draining the hot tub and filling it with warm water can help, and you’ll want to explore adding modest indirect warmth to the hot tub cabinet as well. Hot bottles of water and battery-operated lamps can both be effective.

however, be careful not to overheat the area and keep in mind that it may become moist. When the electricity is restored, turn on the hot tub as usual. If you think a section of your hot tub has frozen, check for weird noises and look for leaks. If in doubt, turn off the hot tub completely and consult a service technician.

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