Last Updated on December 17, 2020

How Much Does It Cost To Run A Hot Tub?

Zac Houghton

Zac Houghton

Construction expert and founder of Loftera.

Recent changes in the manufacturing of hot tubs means that they are not only more energy efficient but now much cheaper to run than ever before.

It really is the best time to buy a new hot tub, which is why we’re taking a look at the costs involved, as well as answering the most frequently asked questions on getting them installed in your home or property.

How Much Does It Cost To Run A Hot Tub?

Table of Contents

Hot Tub Running Costs

We all know that buying a hot tub isn’t a cheap purchase, so it’s important to do your research and know which products will actually save you money in the long run.

The cost to run a hot tub will vary depending on your manufacturer, but here is a rough guide to the average prices you can expect to pay each month:

Size Quality Cost Per Month
Three People Standard £27.00
Three People Luxury £31.00
Five People Standard £32.00
Five People Luxury £36.00
Six People Standard £33.00
Six People Luxury £37.00
Seven People Standard £35.00
Seven People Luxury £40.00

How much does it cost to run a hot tub a day?

The prices above are worked out on your hot tub being set at a 12 degrees ambient temperature, and 39 degrees when in use at least one day a week, with the jets on for no longer than a quarter of an hour in each use.

People who followed that trend in the past have reported to us that their monthly energy bill for electricity rose somewhere between £20 and £40, meaning an average daily fee of 60p to £1.30. Not bad at all for having the luxury of a hot tub at your disposal.

Along with this, there are a few other determining factors that will alter how much it costs to run a hot tub per day. The majority link to how much energy your hot tub will use, including:

  • How much your energy provider charges per KW in your area: Depending on where you live and who you use as your energy provider, the cost per KW is likely to be different. Ideally, you want to be on the cheapest tariff possible, so check what you are paying before you even start weighing up whether or not to buy a hot tub.
  • The climate of where your hot tub will be: If you live halfway up a mountain, then the climate is likely to be much colder and therefore, more energy will be required to heat up your hot tub. Ultimately, that means an increase in costs, so have a think about where it will be positioned to gain maximum efficiency.
  • How big your hot tub is: If you were hoping for a hot tub that’s almost big enough to swim in, then be prepared that its going to be more expensive to run, simply for the fact that more water is needed to be heated up.
  • The quality of insulation that is used: Always try to choose the best insulation that your hot tub manufacturer offers. The less heat you lose, the more money you will save. So, although the high quality insulation might seem expensive, it’s worth it in the long run.
  • Whether or not you use a custom-made hot tub cover: In our opinion, always get a bespoke hot tub cover that fits exactly to your hot tub. There are plenty of cheap versions on the internet that will fit to set sizes, but these often blow off in the wind and end up costing you more money to heat up your water.

What is the cheapest way to run a hot tub?

Although we are going to add more detail on how you can improve your hot tub’s energy efficiency in a minute, the cheapest way to operate your hot tub is by looking after it yourself.

There’s no quick tricks to doing this. You need to make sure you read all the instruction manuals and speak with your installer for any hints or tips that they might have to keep everything in a sound and working order.

As a general rule, you should always keep your hot tub turned on and with the water temperature at a steady level, as this will stop the need for extra power being required to suddenly heat it back up.

Because of this, the cost of running a hot tub in winter tends to increase by a few pounds each month, but you can minimising this by following our top tips to running your hot tub efficiently:

  • Don’t Overuse It: The temptation with a new hot tub is to be in it every day, but this will only drive up your costs. The more times that you are in and out of it, the more you are needing energy to heat it back up again. Try to use it in the evenings or at weekends so that the hot tub can steadily heat itself back up again during the daytime in the week.
  • Keep It Clean: It goes without saying, but taking good care of your hot tub will help to keep your costs low. Start out by getting a good cover that is waterproof and well-insulated, then try to regularly clean out your filters to stop any debris from clogging the pipework.
  • Replacing The Water: If you’ve not had a hot tub before, you might just think the water looks after itself, and it’s something we often get asked about. Normally, your hot tub will need to be emptied a couple of times a year as this will get rid of any invisible dirt and give you some fresh water to enjoy.
  • Hot Water Is Key: Like we’ve already said, keeping the water temperature high is crucial to cost. The first time you heat up your hot tub, you can expect your usual bill to rocket, but once you’ve got it to the desired temperature, your costs should come back down again if you follow our other tips.

Does turning down a hot tub save money?

In a nutshell, turning down or even turning off your hot tub when you aren’t using it, will not save you any money. The only way to help save yourself a few quid is by getting the water to your target temperature and then trying to keep it as close to there as possible.

Reheating the water (1) is the biggest contributor to rising costs with hot tubs, so if you are only planning to use your hot tub on a weekly basis, always leave it turned on. Even if you head off on a two week holiday or won’t be at home for a couple of weeks, at least leave your hot tub on the ambient temperature setting.

If you are planning to be away longer than a fortnight, then it might be worth completely draining your hot tub and then turning it off, so it isn’t in use at all. Just bear in mind that you’ll need to refill it and reheat it once you are back at home and this will add considerably to your energy bills.

To avoid that, try and get in touch with a neighbour or family member to see if they could keep an eye on your hot tub for you and regularly check the filters while you are away.

Does a hot tub use a lot of electricity?

The simple answer is yes, and as you’ve probably already guessed from this guide, it’s the heating up of the water that uses the most electricity.

Of course, your hot tub needs to be switched on at all times, so like anything that is constantly plugged in, it’s going to use a considerable amount of your power. For the electricians amongst us, the average hot tub uses power of between 13 and 40amps, as this supply will operate everything from the heating mechanism to the pumps and lighting.

With this in mind, its worth taking plenty of time to decide on whether you can afford the running costs before going out there and purchasing your hot tub.

Do hot tubs add value to a house?

When it comes to hot tubs, you do have the choice between a built-one that is a permanent fixture, or a portable one that is usually inflatable and can be easily taken down and stored away. 

Obviously, a portable hot tub wouldn’t add any value to your house as it isn’t a permanent fitting. However, a built-in hot tub can add considerable value to your property and makes it much more desirable than ever before.

The key though, is to keep it well maintained and looking good. A hot tub that has been badly looked after or is in need of some repairs can actually have a detrimental effect on your house, by reducing the value of your property.

Hot Tub Help

For any more help and advice when it comes to hot tub installation and cost, please don’t hesitate to get in touch with us here at Loftera.

We’ve decades of experience in the home improvements industry and can help you along with everything from getting a quote on a new hot tub to even finding a plumber to set up the pipework.