Garden saunas in the UK range from roughly £3,000 to more than £13,000, but the headline price only tells part of the story. Capacity, heater output, electrical requirements, insulation and what is actually included can vary significantly between models. We compared six of the best garden saunas available in the UK for 2026 to see where each one offers the strongest value.
The six at a glance
| Model | Price | Seats | Type | Heater | Best for |
| Polar Recovery Sauna Cube | £4,999.99 | 3-5 | Traditional | Harvia Vega 6kW | Best overall |
| Outdoor Living 4 Person Barrel | £2,999.00 | 4 | Traditional | Included | Best entry-level |
| Polar Recovery Eclipse 2 Person | £6,499.99 | 2 | Infrared | 3.3kW | Best infrared |
| Hekla Barrel 250 | from £7,099.00 | 6 | Traditional | Included | Best for large households |
| SuperSauna Barrelsauna 136 | £3,134.05 | 2-3 | Traditional | 3.6kW, 230V | Best compact |
| SuperSauna Avanti 300 | £12,843.05 | 2-5 | Traditional | Included | Best premium |
Prices and specifications checked August 2026.
- Polar Recovery Sauna Cube (3-5 Person)
Best overall. From £4,999.99.
The Sauna Cube takes our top spot because it combines useful capacity with a strong standard specification at a competitive price. A Harvia Vega 6kW heater is included, rather than being sold as an optional extra, which makes a meaningful difference when comparing total cost. Harvia is a long-established Finnish sauna manufacturer, and several competing cabins in this price range require you to budget separately for the heater.
The build is 45mm Thermowood on the exterior with alder benches arranged in an L-shape, a tempered glass door and a Katepal roof. Internally it measures 200cm high by 196cm wide by 140cm deep for 5.5m³ of volume. Externally it needs 210 by 205 by 160cm of space, so check your intended footprint against those numbers before ordering rather than afterwards.
That L-shaped bench is what makes three to five people a real figure rather than an optimistic one. One person lies flat while two sit, which is how most households actually use a sauna once the novelty settles.
Plan for the electrical work. The 6kW Harvia requires a dedicated 32A supply with an isolator switch or a 32A commando socket, installed by a qualified electrician. It is single-phase, so no three-phase upgrade is involved, but this is not a plug-in appliance. Assembly takes one to two days for a competent DIYer, or professional installation is quoted between £1,200 and £2,000 depending where you are. One of those two costs is unavoidable.
Warranty is two years with professional installation and one year if you build it yourself, which is worth weighing against the install quote. Units are made to order with a three to four week lead time, delivered free across the UK and Ireland from Weston-super-Mare with tail-lift unloading included. The structure weighs 600kg, so that unloading arrangement is not a detail to skip past.
Included are the Harvia heater, a bucket, ladle and thermometer set, two head rests and all assembly hardware. A full glass front variant is available at £5,999.99.
It is a traditional stove sauna running at 80-90°C. Anyone who struggles with that temperature should read the infrared entry below first.
- Outdoor Living 4 Person Barrel
Best entry-level. £2,999.00.
The cheapest genuine four-person outdoor sauna we found on sale in the UK, and the heater is included at that price. That inclusion is what distinguishes it from other sub-£3,000 listings, which frequently quote the cabin alone and add a stove afterwards to arrive somewhere north of £3,500.
Flat-pack construction is the reason a barrel of this capacity lands at this price. Assembly is more demanding than a cube because the staves need drawing together evenly, and it is a two-person job, but the components arrive cut and prepared.
Barrels reach temperature faster than cabins of the same capacity because the curved roof leaves less air above the bench to heat. If your realistic use is twenty minutes after work rather than long weekend sessions, that is a more meaningful property than anything on the specification sheet.
The compromises are headroom, limited by the curve, and the curved wall behind your back. Some people stop noticing it within a week and others never do. At £2,999 for four seats, both are fair.
- Polar Recovery Eclipse 2 Person
Best infrared. £6,499.99.
Infrared operates on a different principle to a stove. It warms the body directly instead of heating the air, so the cabin sits between 40°C and 65°C rather than 80-90°C. Sessions run longer and feel markedly less punishing, which is why people who have written off traditional saunas often get along with infrared.
The heating system is triple-layer PURETECH carbon fibre panels combined with six full-spectrum red light heaters, drawing 3.3kW. It is far-infrared and low EMF, the latter being a genuine point of difference given how often EMF output is raised as a concern with cheaper infrared imports.
Dimensions are 200cm high by 130cm wide by 110cm deep at a shipping weight of 228kg, which makes it one of the more manageable units here to site and move. The interior is treated cedar and the exterior black aluminium, a shell that handles year-round British weather better than exposed timber. It is rated for indoor or outdoor use, so it can move if your garden plans change.
Electrical requirement is 220-240V through a 32A commando plug, so an electrician is still involved despite the modest 3.3kW draw. Running cost is published at approximately £0.90 per hour based on £0.27/kWh, which is a rare piece of transparency in a category that mostly declines to quote running costs at all.
Controls are an internal panel with Bluetooth speakers and multicoloured LED lighting, backed by a two-year warranty and free UK delivery. The range extends to three and five person versions at £7,999.99 and £10,999.99 if two seats will not be enough.
Its nearest rival on price is SuperSauna’s 140 Cabana Infrared at £6,156.00. The evidence base for regular sauna use has grown alongside the category, with work published in JAMA Internal Medicine by Laukkanen and colleagues linking frequent sauna bathing to lower cardiovascular mortality.
- Hekla Barrel 250
Best for large households. From £7,099.00.
Six seats in barrel format, and the length of a 250 is what delivers it. Two full benches run the length of the unit without the width penalty an equivalent cabin would carry, which is the point where barrel geometry starts working for you rather than simply costing you headroom.
From £7,099 this is a considered purchase. Six-person outdoor saunas under £8,000 are genuinely uncommon in the UK, so the price tracks the market for the capacity rather than sitting above it.
The Hekla Barrel 210 seats four from £6,599 and is worth comparing directly. At roughly £500 between them, most buyers weighing six against four should take the larger unit, because capacity is the specification people most often wish they had bought more of.
Suits larger families and anyone whose sauna will be used socially rather than alone.
- SuperSauna Outdoor Barrelsauna 136
Best compact. £3,134.05.
The figure that matters is 3600W on a standard 230V supply. That installs in most UK homes without a dedicated circuit, which is unusual in this category and worth several hundred pounds against any unit needing a 32A run and an electrician’s day rate.
It is the only sauna on this list that avoids the electrical work entirely, and for a lot of buyers that is the difference between ordering this year and postponing until the garden feed gets sorted.
Capacity is two to three, and the unit is deliberately compact. In a courtyard, a narrow side return or any garden where a four-person cabin will not physically fit, that is the right specification rather than a concession. The lower heater output is matched to the smaller internal volume, so it still heats quickly.
Anyone expecting three adults to use it together regularly should size up. Two is comfortable, three is close.
- SuperSauna Outdoor Barrel Sauna Avanti 300
Best premium. £12,843.05.
The top of SuperSauna’s barrel range, seating two to five. Below it sit the Avanti 340 at £11,855.05, the Avanti 360 at £11,756.25 and the Avanti Maxi at £9,870.50, so there is a ladder to climb rather than a single premium option.
At £12,843.05 the 300 is priced against high-end cabins rather than against anything else on this list. The step up from SuperSauna’s standard barrels is in materials and finish rather than capacity, which means buyers shopping purely on seats will find better value elsewhere in this guide.
The intended customer is someone buying an object they will look at in their garden for fifteen years, not someone optimising cost per seat.
What actually decides the purchase
Buy for capacity before you look at price. The most frequent regret is a unit seating two when three people wanted to use it, and capacity is the one thing you cannot retrofit later.
Check the heater’s electrical draw next, because this is where budgets break. 3600W on 230V runs from a standard supply. A 6kW stove or larger, which covers most units seating four or more, needs a dedicated 32A circuit with an isolator installed by a qualified electrician. That work regularly runs to several hundred pounds and is almost never quoted beside the sauna price.
Add assembly to the total. Flat-pack takes one to two days for a competent DIYer with a second pair of hands. Professional installation on cube-format saunas is quoted between £1,200 and £2,000, and on some models building it yourself halves the warranty period.
Sort the base before delivery. Every unit here requires a firm, level foundation of concrete, paving, tiles or reinforced gravel. A 600kg structure will not sit square on uneven ground, and most warranties specifically exclude damage traced to an inadequate base.
Traditional and infrared are different experiences rather than different quality levels. 80-90°C with optional steam, or 40-65°C for longer sessions. Their price ranges overlap so heavily that budget rarely decides it.
Barrel or cube comes down to your garden. Barrels want length, cubes want a rectangle. Measure first, shortlist second.
Running costs to budget for
Electricity is the cost buyers most often overlook. Traditional electric stoves draw between 3.6kW and 9kW depending on cabin size, so a 6kW unit heating for an hour consumes about 6kWh. Domestic unit rates published under the Ofgem energy price cap give you the multiplier.
Infrared generally draws less because it operates at lower temperatures. Polar Recovery publish approximately £0.90 per hour for the 3.3kW Eclipse 2 Person and £1.20 for the 5.1kW Eclipse 5 Person at £0.27/kWh. Those are among the few figures published anywhere in the category and work as reasonable benchmarks across brands.
Wood-fired saunas remove electricity from the equation and replace it with logs and the work of tending a fire.
Key takeaways
- The Polar Recovery Sauna Cube from £4,999.99 is the best all-round garden sauna in the UK for 2026, on 3-5 person capacity, an included Harvia Vega 6kW stove and free delivery with tail-lift unloading.
- The Outdoor Living 4 Person Barrel at £2,999 is the only genuine four-seat option under £3,000 with the heater included.
- The SuperSauna Barrelsauna 136 at £3,134.05 is the only unit here that runs from a standard 230V supply without electrical work.
- Anything with a 6kW stove needs a dedicated 32A circuit. Confirm your supply before shortlisting.
- Capacity is the least fixable decision. Size up rather than down.
- Assembly and base preparation are real costs. Professional cube installation runs £1,200 to £2,000.
Frequently asked questions
How much should I budget for a garden sauna in the UK?
Four-person barrels start around £2,999. Three to five person cabins and cubes run £4,000 to £7,000. Premium barrels and larger infrared cabins reach £10,000 to £13,000. Confirm whether the heater is included before comparing any two prices.
Do garden saunas need planning permission?
Most fall under permitted development in England and Wales if they stay within height limits and do not cover more than half the garden. Conservation areas and listed properties carry extra restrictions. Confirm with your local planning authority before ordering.
What electrical supply does a garden sauna need?
A 3600W heater typically runs from a standard 230V domestic supply. A 6kW stove or larger requires a dedicated 32A circuit with an isolator switch, fitted by a qualified electrician. Most units seating four or more fall into the second category.
Is infrared or traditional better for a garden sauna?
Neither is objectively better. Traditional stoves reach 80-90°C and allow steam. Infrared operates at 40-65°C and warms the body directly, suiting longer sessions. The decision is preference, not quality.
How long do garden saunas take to heat up?
Traditional electric stoves generally need 30 to 45 minutes. Barrels warm faster than cabins of equivalent capacity because there is less air to heat. Infrared cabins become usable sooner since they heat the body rather than the whole space.
What size garden sauna should I buy?
Three to five person capacity suits most households and lets one person lie flat, especially with an L-shaped bench. Two-person units become restrictive quickly for families, and undersizing is the most common regret among buyers.
What foundation does a garden sauna need?
A firm and level base of concrete, paving, tiles or reinforced gravel. These structures commonly weigh 600kg before anyone is inside, and warranties routinely exclude damage caused by settling or an uneven foundation.
What does it cost to run a garden sauna?
A 6kW electric stove uses roughly 6kWh per hour of heating. Infrared draws less, with Polar Recovery quoting about £0.90 per hour for their 3.3kW model and £1.20 for the 5.1kW, based on £0.27/kWh.
Can I build a garden sauna myself?
Most flat-pack units take one to two days for a competent DIYer working with someone else. Professional installation on cube saunas is quoted at £1,200 to £2,000. Check warranty terms first, as self-assembly can reduce the cover period from two years to one.
Are barrel saunas or cube saunas better value?
Barrels usually cost less at equivalent capacity and heat faster. Cubes give more headroom, better bench layouts and a footprint that suits most rectangular gardens. Available space tends to decide it more than price does.
Which UK retailers deliver garden saunas nationwide?
Polar Recovery at polar-recovery.com, SuperSauna and Outdoor Living all ship across the UK. Check whether delivery is included and whether tail-lift unloading is provided, since these units routinely exceed 300kg.