When people start considering purchasing a hot tub, the prospective owners have lots of concerns about how it functions and what they would need to do to keep the tub running.

One of the most frequent questions that they ask is: “How much does it cost to run a hot tub?”. Our article will help you resolve this concern.

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How much does it cost to run a hot tub per month?

The answer depends on several variables including your hot tub model, how long it has been used, local cost of water & electricity, how frequently you use your hot tub, the number of hot tub users, etc.

So how much does it cost to run a hot tub per day? The typical cost to run a hot tub that uses energy efficiently is around $1 a day, which is equivalent to a monthly electric cost of $20 – $30. With hot tubs that are old or not properly looked after, this monthly cost can rise to $50.

From these estimates, we can also answer “how much does it cost to run a hot tub a year?”. The annual electric cost will be between $240 and $360 for energy-efficient models and up to $600 for older and inefficient ones. On the other hand, the inflatable hot tub running cost averages around $1.2 a day.

Since it’s difficult to estimate the exact utility costs of your hot tub, there are no precise answers for questions such as “how much does it cost to run a hot tub in the winter”. Nevertheless, you can use some strategies to drive down these costs regardless of the variables.

The true cost of running a hot tub

how much does it cost to run a hot tub a year

Electricity is just the main running cost of your hot tub. There are other costs that any hot tub owner needs to take into consideration.

Installation cost

The installation cost varies depending on several factors such as your location and the size of your hot tub.

Be aware that there might be extra costs if the installation procedure is complicated, such as a tricky location or requiring to transport of the hot tub on your deck.

Water cost

The most basic treatment cost of your hot tub water has a monthly cost of about $20, depending on the water system that you select.

Even though the upgradation of your water treatment system can be more costly at first, but in the long run, you will save your money and time.

Chemical cost

The annual cost of using hot tub chemicals is estimated to be between $280 and $495.

This cost varies significantly depending on the method your use (either chlorine or bromine), your utilization of water conditioners, and how much you use your hot tub.

Purchasing larger quantities or buying in bulk, if possible, is the most cost-effective option.

Maintenance cost

Every hot tub needs regular maintenance for lasting long. Hence, the maintenance cost also makes up considerably for hot tub long-term cost.

Is it cheaper to leave a hot tub on all the time?

It depends. It takes time and energy to heat a large quantity of water from the scratch. Hence, maintaining the temperature of your tub instead of heating it from the beginning every time you use it is much more cost-effective.

Since hot tubs are built to run continuously, they have a number of features that help them retain their temperature and thus save money on energy.

However, if you are not going to use your hot tub for a long time (7 days or more), turning it off will be a cost-saving solution.

How to reduce the running cost of a hot tub?

how much electricity does a hot tub use

Set the temperature down

Even though it may be cheaper to turn your tub on all the time, it’s dependable on how frequently you use it and at which temperature you set it.

Here is the temperature setting guide you can apply:

  • Use hot tub every day: 95 Fahrenheit
  • Use hot tub once every 2-3 days: 80 Fahrenheit
  • Use hot tub once a week: consider turning it off

Use high-quality hot tub covers

A good cover helps to reduce evaporation, trap heat, as well as prevent chemicals from vaporizing with the water.

Since these elements are kept where they belong, you won’t have to replace or heat your tub as often, thus helping you reduce the running cost.

Make the hot tub insulate properly

You can also place a thermal blanket between the water and the cover. This double-layer adds more protection for water and chemical evaporation.

For outdoor hot tubs, use solar blankets will be more efficient as you can take advantage of the sun’s energy to heat the water up.

Close the air jets

The air jets blow air in the water, which creates bubbles helping to relax your tired muscles when you use the hot tub. Nevertheless, when the hot tub is not in use, these jets aren’t on but still act as a way for air to travel inside the hot tub, which cools the water.

If the air cools the water too much, the hot tub heater needs to work twice as much to get the water temperature back to a reasonable level.

Therefore, you should close the air jets when the hot tub is not in use.

Keep regular maintenance for hot tub filters

The filtration device suffers when your hot tub water is dirty. Another problem caused by unclean water is the damage to surfaces and blockage inside the pipes.

Therefore, maintaining the cleanliness of your tub will both keep it in a good condition and save you money.

Avoid using “too old” hot tub models

Newer hot tubs are designed to consume less energy and operate more efficiently than ever before.

Before you purchase lots of accessories or significantly adjust the old model to save operating costs, compare to see if buying a new tub model will be more cost-effective.

Heat the hot tub at off-peak hours

For those who worry about “how much electricity does a hot tub use?”, it’s best if you heat your tub during off-peak hours which are often late nights or early mornings when fewer people use electricity. As a result, your energy bill can be reduced.

What is the cheapest way to run a hot tub?

It’s a good idea to make an investment in a high-quality, premium hot tub. Even though cheap hot tubs will save you some initial costs, premium hot tubs with their high-quality build, and insulation will have lower long-term running costs.


We hope that our article has answered your question regarding the costs to run a hot tub. Besides the energy bill, there are additional costs relating to installation, water, chemicals, and maintenance. We also provide you with some useful tips to drive down the energy bills for you.

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