How Much Does It Cost To Run A Hot Tub In 2023?

Friday, 30th Jun 2023 in Buying guides, Tips, Uncategorised
Cost of running a hot tub in 2023 | A6 Hot Tubs

If you’re thinking of making an outdoor relaxation space then you’ve probably questioned how much it would cost to run a hot tub in 2023. A hot tub can be a big investment, especially on your energy bills. It’s important to do the sums if you’re thinking of taking the plunge into hot tub ownership.

Here at A6 hot tubs, we’re always ready to help you cut running costs and help you find energy-efficient ways to enjoy the health benefits of hot tubs. The best way to start this is to buy a good quality hot tub. From eco-award-winning tubs to those built to the highest standards with Canadian craftsmanship we’ve got what you need to start your journey off on the best foot.

In fact, a quality investment to relieve aches and pains could actually save you anguish and money in the long run. Plus who doesn’t like to enjoy a soak in a hot tub? Making it a fantastic centrepiece at any gathering of friends and family.

We’ve scoured our knowledge to work out how much you can expect to spend running a hot tub in your home in 2023. We’ve also compiled some short tips on how to cut some running costs on your hot tub.

How can I reduce the cost of running my hot tub?

There are many factors that will affect how much energy your hot tub uses. One of the first factors here is the amount of water your hot tub holds and has to heat. The greater the volume of water, the more heating power is needed, and the higher the running cost.

Following this, you’ll need to consider the water temperate in your hot tub. This is commonly set between 36°C to 40°C. In the summer months, this can be reduced to suit your wants. The higher the temperature you set your hot tub at the greater your electricity bill and running costs will be.

Relax in Hot Tubs | A6 Hot Tubs

Depending on how often you drain and refill your hot tub, you’ll also have to consider the water bill. The cost to fully heat a hot tub from scratch will be greater than maintaining heat. This is why it’s important to care for the water. Ensure users are showering before entering and not introducing contaminants to the water.

If you’re yet to install your hot tub you may want to consider whether an indoor or outdoor hot tub will be better. An outdoor hot tub will have a much lower ambient temperature meaning higher running costs. If you have the option to put your hot tub indoors, this can save you greatly in the long run. Make use of any extensions or sheltered areas you have. This can also save you and any other users from the cold chill in colder months.

How much does it cost to run a hot tub?

The rough cost to run a hot tub, based on the new Ofgem energy price cap (July 2023), is per pence/kWh of electricity which is 30p. This can vary depending on where you live and the tariff your electricity is on.

Based on this, a hot tub with a 3kW heater would cost 90p per hour to run on full for water heating alone. Adding to this will be the cost of running the internal pump. Remember if you’re wanting to keep the heat in then keeping the cover on for as long as possible before use will help with heat loss.

On average, a hot tub uses between 3.5 and 6 kWh of energy per day. An extra-large hot tub may use a bit more than that. You can use these figures to get a rough idea of how much you’ll be paying to heat your hot tub in 2023.

The current price cap for a standard variable tariff in the UK is 33.2p per kWh for electricity. Based on this, the average household can expect to pay between £424 and £727 per year to run a hot tub. That will equal roughly £35 to £60 per month. This figure should fall in the coming year.

What hot tub uses the least amount of electricity?

In short, a hard shell acryl hot tub will be the cheapest type of hot tub to run. There are four main types you’ll come across when you looking to buy. These can vary greatly in insulation, quality and electricity usage. The main hot tub types are:

  • Inflatable hot tubs (temporary)
  • Hard shell hot tubs (usually plastic or acrylic and permanent)
  • Bespoke Tiled Hot tubs (that are built into the ground)
  • Wood-fired hot tubs

These different hot tubs will all cost different amounts to run. Usually the greater the initial investment of a hot tub the lower the running cost will be. This isn’t always the case though. It’s important to do your research and know how the insulation and build of the hot tub will affect electrical usage.

Energy Efficiency | A6 Hot Tubs

‘Hot tubs advertised very cheaply can be poorly insulated … Always ask your retailer how cost-effective they are to run and ask them to provide any published figures they may have to ensure that the hot tub has sufficient insulation.’

Sallie from BISHTA

Inflatable hot tubs will have the least insulation of all of the above types. For example, Lay‑Z‑Spa claims to be the most energy-efficient and best-insulated inflatable hot tub brand, yet it would still cost over £5 to run a day. This comes despite a test by independent body SGS using a 2‑4 capacity 669 litre Lay‑Z‑Spa hot tub finding it cheaper to run than three competitors. With this being a more extreme cost in the winter months it’s probably best to pack up these temporary models when the cold hits.

A hard shell hot tub made of acrylic will have much better insulation and be much cheaper to run. We’ve made a full comparison of hard shell and inflatable hot tubs, which you can read here.

How do I find an energy efficient hot tub?

Energy efficiency is a key factor in any hot tub. We offer eco-friendly models and top-quality built hot tubs. Visit our showroom or view our small and large hot tubs online. With these hot tubs, you’ll find your running cost will be on the lower end of the aforementioned price scale.

Here are some other key features that help keep down the costs of running your Premier hot tub:

1) Insulation

Insulation is one of the most important factors when finding a new hot tub. In 2023 you’ll usually see one of two insulation methods being used.

The first will be a full foam insulation method like in the Oasis R18 insulation. This usually means that much like insulation within a house the cavity spaces will be filled with a foam material. This will surround elements like the pipework, pump, heater and shell, not allowing heat to escape.

The second most common method is heat lock insulation. This usually consists of lighter foam insulation along with a foil wrap. The foil will reflect the heat back into the hot tub cabinet. This circulating heat will be trapped within the hot tub cabinet and escape slowly over time, but will also help keep heat within the water above.

Sunken hot tub by water | A6 Hot Tubs

You also want to look out for an ABS base. This is a one-piece construction material that provides a sturdy foundation and seals the bottom of the spa, locking in heat and keeping moisture out. Not only does this sturdy (and waterproof) base reinforce the hot tub’s structure and keep it safe from the elements and rodents, but it also retains heat and minimises heat loss from below.

2) Thermal Top Cover

A thermal top cover is one of the most impactful ways to keep the heat in your hot tub. While all hot tubs come with a top cover not all will be the same. A thicker thermal top cover will help you stop heat from escaping from the water. While doing this it will also protect any outside contaminants from entering the water, keeping your water safe. The less you have to change your water the better. Heating a hot tub of fresh water can raise your electricity usage a fair amount.

A hot tub cover will also not typically last as long as a hot tub. You have to ensure your top cover is properly maintained. Over time it can get waterlogged and seals can fade allowing heat to escape. We offer custom hot tub cover replacements to fit any size hot tub.

3) Heater & Pump

The quality of a heater and pump within a hot tub can greatly affect the running costs. Typically, inflatable models will have a poorer quality heater and pump. This is due to the workload not being as much. Due to these pumps being of lesser quality, they can use up much more electricity heating the water.

You’ll usually see a 3kW heater within most average-sized hot tubs in 2023. This is due to the workload needed to heat a large body of water. While these pumps can be quite cost-effective compared to lesser-quality pumps, you may also want to look at external heat pumps.

Growing in popularity due to the rise in the cost of electricity. These pumps can be fitted to your hot tub, replacing the internal heater system and offering even greater savings for running costs.

4) Energy Saving Spa Bag

If you’re interested in adding another level of insulation to really trap that heat in your hot tub, you may want to consider a spa bag/winter bag. These will wrap around your hot tub when not in use, and will keep the running costs as low as they can be.

These spa cover bags come as standard on all of our Sunbeach hot tubs. They will protect your hot tub from the elements and natural wear and tear.

5) Easy Maintenance

Maintenance may be an afterthought when looking at new hot tubs but it’s important to consider. A hot tub that has an ozone system will help keep your water clean. This is done by passing the water through an active oxygen system. This oxidization will help your chemicals go further, meaning a lower chemical cost for you.

When buying a new hot tub all these features can be a little overwhelming, especially if you aren’t familiar with hot tubs. Our helpful and friendly team is here to offer their expert advice and help you find the right hot tub for you. Get in touch today to see how we can help you find your perfect hot tub.

Frequently Asked Questions

How much does it cost to run a hot tub in 2023?

For a standard variable tariff in the UK, 33.2p per kWh. Based on this an average running cost of a hot tub will be between £424 and £727 annually. That’s £35 to £60 per month.

What is the cheapest way to heat a hot tub from new?

When filling a new hot tub it’s far more energy efficient to fill your hot tub with warm water, rather than cold. This will lessen the time and cost of heating the water from scratch.