# How Much Does a Sauna Cost to Run at Home in the UK? **By Pro-Line Direct Newsroom** · 2026-08-03 # How Much Does It Cost to Run a Sauna at Home in the UK? 2026 Guide Installing a sauna at home can create a convenient space to relax, unwind and enjoy sauna sessions without travelling to a gym, spa or leisure centre. But before investing, there is one practical question most buyers want answered: **how much does it cost to run a sauna at home in the UK?** The answer depends mainly on the sauna's power rating, the type of heating system, how long it takes to warm up and how frequently you use it. For many home saunas, the electricity cost per session can range from **well under £1 for a smaller infrared sauna to around £1–£2 or more for a higher-powered traditional electric sauna**. Larger saunas, longer heat-up periods and colder outdoor conditions can increase this further. This guide explains typical **sauna running costs in the UK**, how much electricity a sauna uses and how you can calculate the likely cost of running your own sauna. ## Quick Answer: How Much Does a Home Sauna Cost to Run? Using the current Ofgem average electricity rate of approximately **26.11p per kWh**, a smaller 1.5kW infrared sauna running for 45 minutes would use approximately 1.125kWh of electricity, costing around **29p**. A 6kW traditional sauna running at its full rated power for one hour would use up to 6kWh, costing approximately **£1.57**. However, these are simplified estimates. Actual energy consumption can vary because sauna heaters do not necessarily operate at maximum power continuously once the required temperature has been reached. Your electricity tariff, sauna size, insulation, temperature setting, session length and ambient temperature will all influence the final cost. According to [Ofgem's current energy price cap information](https://www.ofgem.gov.uk/information-consumers/energy-advice-households/energy-price-cap-unit-rates-and-standing-charges), the average electricity unit rate for households paying by Direct Debit on a standard variable tariff in England, Scotland and Wales is 26.11p/kWh from 1 July to 30 September 2026. Your own electricity rate may be higher or lower. ## Why Are More UK Homeowners Considering Saunas? Home saunas have become increasingly visible within the UK home wellness market. In 2024, [The Guardian reported on the growing popularity of home saunas in Britain](https://www.theguardian.com/money/article/2024/may/04/there-are-so-many-benefits-why-more-and-more-britons-are-building-a-home-sauna), highlighting how something once regarded as relatively niche was becoming more widely considered by UK homeowners. Having a sauna at home also removes the need to travel elsewhere every time you want to use one. However, alongside the purchase price, installation requirements and available space, it makes sense to understand the ongoing electricity costs before choosing a model. You can [explore our full range of home saunas](https://prolinedirect.co.uk/collections/saunas), including infrared, traditional steam, indoor, outdoor and hybrid options. ![](https://cdn.shopify.com/s/files/1/1029/2396/0650/files/PLD_07.31.png?v=1785510267) ## How Is Sauna Running Cost Calculated? The simplest way to estimate the electricity cost of a sauna is: **Sauna power rating (kW) × operating time (hours) × electricity price (£/kWh) = estimated running cost** For example, suppose you have a 4.5kW sauna heater and your electricity costs 26.11p per kWh. If it operated at full power for one hour: **4.5kW × 1 hour = 4.5kWh** **4.5kWh × £0.2611 = approximately £1.17** So the theoretical electricity cost would be around **£1.17 for that hour**. It is important to remember that this calculation assumes continuous operation at the full rated power. In practice, thermostatically controlled heaters can reduce their output once the sauna reaches the selected temperature. ## How Much Electricity Does a Sauna Use? There is no single figure that applies to every home sauna. Compact infrared saunas may have considerably lower rated power than large traditional saunas designed for several people. As a rough guide: Sauna example Session Approx. electricity used Approx. cost\* 1.5kW infrared sauna 45 minutes 1.125kWh £0.29 2.5kW infrared sauna 45 minutes 1.875kWh £0.49 4.5kW traditional sauna 60 minutes 4.5kWh £1.17 6kW traditional sauna 60 minutes 6kWh £1.57 8kW traditional sauna 60 minutes 8kWh £2.09 6kW traditional sauna 90 minutes 9kWh £2.35 \*Figures use an electricity price of 26.11p/kWh and assume the heater operates continuously at its rated power. They should therefore be treated as estimates rather than guaranteed running costs. The actual energy used may be lower once a thermostatically controlled sauna has reached its target temperature. ## Infrared Sauna Running Costs An **infrared sauna typically requires less power than a larger traditional electric sauna**, particularly when comparing compact home models. Rather than relying primarily on heating the entire cabin to a very high temperature, infrared elements provide radiant heat, allowing infrared saunas to operate at lower cabin temperatures. For example, a 1.5kW infrared sauna running for 45 minutes at full power would cost approximately: **1.5kW × 0.75 hours × £0.2611 = £0.29** If you used it four times per week: **£0.29 × 4 = approximately £1.16 per week** Over a four-week period, that would be approximately **£4.64 in electricity**. Again, the exact figure depends on the model and your electricity tariff. For buyers intending to use their sauna frequently, comparing the rated wattage of different models can therefore be worthwhile. ## Traditional Sauna Running Costs Traditional electric saunas generally use a higher-powered sauna heater to raise the temperature of the cabin and heat the sauna stones. A compact model might use a heater around 4.5kW, while larger saunas can require substantially more power. For example: **6kW × 1 hour × £0.2611 = approximately £1.57** Using that sauna three times per week at the same theoretical energy consumption would cost: **£1.57 × 3 = approximately £4.70 per week** Over four weeks, this would be approximately **£18.80**. Real-world consumption can differ because the heater's thermostat regulates the heating elements once the desired temperature has been reached. Sauna heater manufacturer [Harvia explains that electric heaters initially operate at higher output while heating the sauna](https://www.harvia.com/en/ideas-and-trends/sustainability-and-safety/the-cost-of-heating-a-sauna-is-less-than-you-think/), before the thermostat regulates the heater to maintain the selected temperature. This is one reason simply multiplying the maximum heater output by the entire session length can sometimes overestimate actual electricity consumption. ## Infrared vs Traditional Sauna: Which Is Cheaper to Run? In general, a smaller infrared sauna will usually have **lower electricity requirements per session** than a larger traditional electric sauna. However, power consumption should not be the only deciding factor. An infrared sauna and a traditional sauna produce noticeably different experiences. ![](https://cdn.shopify.com/s/files/1/1029/2396/0650/files/11103945936196708461.jpg?v=1785510349) ### Infrared Sauna Infrared saunas use infrared heating panels to provide direct radiant warmth. They typically operate at lower cabin temperatures and can be suited to regular home wellness routines. They are worth considering when: - Lower power consumption is important - You prefer a gentler cabin temperature - You want a compact indoor sauna - You expect to use your sauna frequently ![](https://cdn.shopify.com/s/files/1/1029/2396/0650/files/727675078252804218.jpg?v=1785510386) ### Traditional Sauna Traditional saunas use an electric stove and sauna stones to heat the cabin. Water can be carefully poured over heated stones where the particular heater permits it, creating short increases in humidity. They may suit you better when: - You prefer a classic high-temperature sauna experience - Several people will regularly use the sauna - You want a stronger ambient cabin heat - Running cost is less important than the traditional sauna experience There are also hybrid models for buyers who want greater flexibility between heating styles. ## What Affects the Cost of Running a Home Sauna? Several factors determine how much electricity your sauna will actually consume. ### 1\. Sauna Heater Size The heater's power rating is one of the biggest factors. A 1.5kW system has a much lower maximum electricity demand than an 8kW sauna heater. However, simply choosing the lowest-powered heater is not necessarily more efficient. The heater needs to be correctly matched to the size and construction of the sauna. An undersized heater may have to work harder and for longer to achieve the required temperature. ### 2\. Sauna Size A larger cabin contains more air and usually has a greater surface area to heat. This is why larger family and multi-person saunas generally require more powerful heaters than compact one or two-person models. ### 3\. Heat-Up Time You should consider the **total operating time**, not simply the amount of time you spend sitting inside the sauna. For example, if your sauna requires 30 minutes to preheat followed by a 30-minute session, the heater has been operating for approximately one hour in total. ### 4\. Indoor or Outdoor Installation Outdoor saunas can be more affected by ambient temperatures. During colder UK winter weather, an outdoor sauna may take longer to reach the desired temperature than it would during milder conditions. Good construction and insulation become particularly important for outdoor models. ### 5\. Insulation Heat escaping through poorly insulated walls, ceilings or doors means the heater has to work harder to maintain temperature. A well-designed and appropriately insulated sauna should retain heat more effectively. ### 6\. Glass Area Large glass doors and windows can look impressive, but glass generally retains heat differently from insulated timber wall sections. This means the amount of glazing can influence heater requirements and heat retention. ### 7\. Temperature Setting You do not necessarily need to run your sauna at its maximum temperature. A slightly lower target temperature can reduce the amount of work required from the heater while still providing an enjoyable sauna experience. ### 8\. Frequency of Use A household using its sauna once or twice per week will naturally spend considerably less on electricity than someone using it every day. When comparing saunas, calculate the cost according to your **realistic weekly routine** rather than just looking at the cost of one session. ![](https://cdn.shopify.com/s/files/1/1029/2396/0650/files/ChatGPT_Image_Jun_17_2026_08_55_16_AM.png?v=1785510483) ## How Much Does a Sauna Cost Per Month? Let's look at a simple example. Imagine an infrared sauna costs approximately **£0.49 per 45-minute session** and you use it four times per week. **£0.49 × 4 = £1.96 per week** Across four weeks: **£1.96 × 4 = £7.84 per month** Now consider a traditional sauna costing approximately **£1.57 for an hour of operation** and used three times per week. **£1.57 × 3 = £4.71 per week** Across four weeks: **£4.71 × 4 = £18.84 per month** These examples illustrate why there is no universal monthly sauna running cost. Your chosen model and usage pattern make a significant difference. ## How Much Does a Sauna Cost to Run Per Year? You can use exactly the same calculation to estimate your annual cost. For example, if each session costs £1.57 and you use your sauna three times per week: **£1.57 × 3 sessions × 52 weeks = approximately £245 per year** A lower-powered infrared model costing around £0.49 per session and used four times weekly would be: **£0.49 × 4 × 52 = approximately £102 per year** These figures are electricity-only estimates and do not include maintenance, repairs or changes in future electricity prices. ## How to Reduce Sauna Running Costs You do not need to stop using your sauna regularly to manage electricity consumption. A few practical habits can help. ### Use the Sauna Once It Is Ready Avoid leaving the sauna sitting at full temperature for long periods before entering. Once it has reached a comfortable temperature, begin your session rather than allowing it to heat unnecessarily. ### Avoid Unnecessarily Long Sessions Longer operating periods mean more electricity consumption. Choose a session length that suits you instead of automatically leaving the sauna running for the maximum timer duration. ### Keep the Door Closed Every time the sauna door remains open, heated air escapes and cooler air enters. Close the door promptly to help maintain a stable temperature. ### Look After Your Sauna Heater and Stones For traditional saunas, maintaining the heater and sauna stones correctly can help the heating system work as intended. Harvia recommends inspecting sauna stones periodically because ageing or poorly arranged stones can affect airflow and heating performance. ### Choose the Right Sauna for Your Household Buying a much larger sauna than you realistically need can mean paying to heat unnecessary cabin space. If the sauna will usually be used by one or two people, a compact model may make more practical sense than a large six or eight-person sauna. ## Is a Home Sauna Expensive to Run? For many households, **a home sauna is not necessarily as expensive to run as people initially assume**. Smaller infrared saunas can cost considerably less than £1 per session in electricity, while traditional electric saunas will generally cost more because of their larger heaters and higher operating temperatures. The most useful figure to compare when shopping is the **rated power in kilowatts or watts**. Once you know that number, you can estimate the maximum cost using your own electricity tariff: **Power × operating time × electricity price = estimated session cost** Remember that this gives you an approximate figure rather than a guarantee because real-world electricity use varies during heating and temperature maintenance. ![](https://cdn.shopify.com/s/files/1/1029/2396/0650/files/07.31_pld.png?v=1785510602) ## Are Home Saunas Worth the Running Cost? That depends on how frequently you expect to use yours. Someone who enjoys sauna bathing regularly may value the convenience of having a dedicated sauna at home much more than someone who only expects to use it occasionally. Consider: - The initial sauna purchase price - Electrical installation requirements - Running costs - Available indoor or outdoor space - Number of regular users - Preferred sauna type - Expected frequency of use Looking at these factors together provides a much better picture than focusing on electricity costs alone. ## Choosing an Energy-Efficient Home Sauna When comparing models, check the product specification carefully rather than choosing purely on appearance. Pay particular attention to: - Rated power in watts or kilowatts - Recommended number of users - Indoor or outdoor suitability - Heating type - Electrical connection requirements - Cabin dimensions - Construction and insulation - Expected heat-up time The right sauna should be correctly sized for both your available space and how you intend to use it. ## Find the Right Home Sauna at Pro-Line Direct Running costs are only one part of choosing a home sauna, but understanding them makes it much easier to compare different models realistically. Infrared saunas can be particularly attractive for customers prioritising lower electricity consumption, while traditional electric saunas provide the classic high-temperature sauna experience many buyers are looking for. At Pro-Line Direct, you can [browse our range of saunas for sale](https://prolinedirect.co.uk/collections/saunas), including infrared, traditional steam, indoor, outdoor and combination models in a variety of sizes and power ratings. Not sure which size, heater type or electrical setup is suitable for your home? [Contact the Pro-Line Direct team](https://prolinedirect.co.uk/pages/contact-us) and we can help you compare the available options. ## Frequently Asked Questions ### How much does it cost to run a sauna for one hour in the UK? It depends on the power rating. At an electricity rate of 26.11p/kWh, a 4.5kW sauna operating continuously at full power for one hour would cost approximately £1.17. A 6kW sauna would cost around £1.57, while an 8kW sauna would cost approximately £2.09. Actual electricity consumption may be lower once a thermostatically controlled heater reaches the required temperature. ### How much electricity does a home sauna use? Electricity consumption depends on the sauna heater's rated power and how long it operates. A 2kW sauna operating for one hour at maximum power could use up to 2kWh, while a 6kW sauna could use up to 6kWh during the same period. ### Are infrared saunas cheaper to run? Infrared saunas are often cheaper to run than traditional electric saunas because many home infrared models use lower-powered heating systems and operate at lower cabin temperatures. The exact difference depends on the models being compared. ### How much does an infrared sauna cost to run in the UK? As an example, a 1.5kW infrared sauna running at full power for 45 minutes would cost approximately 29p using an electricity price of 26.11p/kWh. A 2.5kW model under the same conditions would cost approximately 49p. ### Does a sauna use a lot of electricity? A sauna can draw a relatively high amount of power while heating, particularly a larger traditional model. However, it is usually only operated for a limited period rather than continuously throughout the day. Total electricity consumption therefore depends heavily on session length and frequency. ### Does an outdoor sauna cost more to run in winter? It can. Colder outdoor temperatures may increase heat-up times and heat loss, particularly during winter. The sauna's insulation, construction, heater size and local weather conditions all affect the difference. ### What is the cheapest type of sauna to run? A compact, lower-powered infrared sauna will generally have lower electricity costs than a large traditional electric sauna. However, buyers should also consider the type of sauna experience they prefer rather than choosing entirely on running cost. **Tags:** benefits of sauna, CenturaHeat Sauna, Infrared Light Sauna, Outdoor Saunas, sauna costs, sauna running costs --- > Source: [Pro-Line Direct](https://prolinedirect.co.uk/blogs/home-improvement/how-much-does-a-sauna-cost-to-run)