For many people, the idea of relaxation can be associated with spending time in hot tubs.

Nevertheless, hot tubs are high-end products the costs of which don’t end after their installation. Keeping the water warm and circulating would increase your monthly energy bill significantly.

So, how much electricity does a hot tub use? Our article will offer you the answer you are looking for.

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How much electricity to use a hot tub in a month?

The part in a hot tub that consumes the most energy is the heater which will use either about 1,500 watts or approximately 6,000 watts, which depends on if it’s a 120-volt or 240-volt heater. Another part that consumes a lot of energy is the water pump, using around 1,500 watts.

The heater will sometimes run even if the tub is inactive to keep the water warm. But when it’s in use, the heater and water pump will be running regularly, if not continuously.

As a result, a 120-volt-heater hot tub will utilize about 3,000 watts when in use, and another with a bigger heater will utilize about 7,500 watts. After being translated into kilowatts per hour, these wattages are equivalent to 3 kWh and 7.5 kWh, respectively.

Supposing the electric rate is 12 cents, the costs per hour of a 120-volt-heater hot tub and a 240-volt-heater hot tub are 36 cents and 90 cents, respectively.

However, there are many other factors that will affect the monthly cost of a hot tub, including:

  • The hot tub size
  • The hot tub’s thermostat setting
  • Temperature & wind speed in the open air
  • Your water heater’s age and efficiency

How much electricity does a hot tub use in winter?

hot tub in winter

The energy amount required to keep your hot tub warm in cold weather is determined by a number of factors, including the temperature in your region, the location of your hot tub, and how well the hot tub can retain heat.

If you don’t use your hot tub many times a week in winter, or it’s incredibly well insulated, it would be more cost-effective to heat up before you use the hot tub each time than to have it running continuously.

Bear in mind that if the weather is colder, it will take you longer to warm up your hot tub. On a hot, sunny day, heating up a hot tub that doesn’t have a cover will take as little as four hours. The same type of hot tub can take you a maximum of 16 hours to heat up on a cold winter day.

Before letting your hot tub run, make sure your hot tub cover is securely fastened to decrease heating times.

What affects the electric consumption of your hot tub?

There are many factors affecting how much your hot tub will consume electricity, including:

Your frequent use

The more you use your hot tub, the more energy it consumes because more usage is associated with more heat loss, forcing your hot tub’s system & components to work more.

Your maintenance schedule for the hot tub

If you carry out proper maintenance, you can save up the electricity that your hot tub consumes such as utilizing a high-quality, fitting sealed cover and regularly cleaning the filters.

Heat up “new” water

Heating your hot tub water costs more than keeping it at a steady high temperature on the monthly energy bill. Therefore, after your hot tub is heated up for the first time, your next bill will be marginally higher than the following months.

Water replacement

The replacement of hot tub water is part of routine maintenance. Some systems include draining and refilling the hot tub twice or three times per year.

After being refilled, the hot tub water will require to be heated, which will result in a slight rise in the next energy bill.

“Old version” hot tub

Heating, circulating and filtering the water require hot tubs to consume a large amount of electricity. This is particularly true when it comes to older versions.

Many new models are built to use energy more efficiently with better insulation, pumps, and controls. Some of the newest hot tubs consume half the amount of energy as ones sold only 10 years ago.

Will a large hot tub cost more energy than a small one?

Yes, it will but not significantly.

Running a larger hot tub costs marginally more since more water needs heating. However, the difference isn’t significant if you have a hot tub that consumes energy efficiently.

Should you turn off the hot tub when not in use to save the electric bill?

how much electricity a hot tub consumes

Turning off your hot tub is not a recommended way for energy efficiency.

Instead of turning it off, after it has been heated, keeping your hot tub at a proper temp when not in use will be a good way to save your energy and money. It’s more expensive to reheat the water from the beginning each time you use the hot tub.

Even if you just use your tub once per week, you should keep it on all the time. You can reduce the water temperature down to 80 degrees for vacations that last a maximum of 2 weeks, otherwise, keep your hot tub running normally.

If the hot tub is not in use for over 2 weeks, you can drain it first then refill it once you return.

Any methods to minimize the hot tub energy cost?

Owners of hot tubs, to some degree, are responsible for energy conservation. You will maintain the electrical costs within a reasonable range by following the hot tub manufacturer’s instructions and your dealer’s recommendations for the product operation and maintenance.

Always keep your hot tub running with its water staying at a steady temperature, regularly clean your filters, and protect your hot tub with a fitting, high-quality & insulating cover while not in use for energy efficiency maximization.

Final words

Our article has answered your question regarding how much electricity a hot tub consumes. We have also provided you additional information about factors that affect its energy consumption and tips to help you reduce energy costs.

Hopefully, with our help, you can use and carry out proper maintenance to keep your hot tub consume energy as efficiently as possible.

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