Harvia The Wall 6kW
Fenix touch panel on the wall, plus the MyHarvia app to warm it up from your phone
- Power
- 6 kW
- Stones
- 20 kg
- Supply
- 40 A, 230 V hard-wired
£1.97a session
£26a month
Outdoor Living Barrel Sauna Thermo - 4 Person Outdoor Sauna
Model: OLOTBA
Regular price £3,999.00
Unit price ⓘ Unit price based on the product measurement shown.
Outdoor Living
A classic barrel sauna for four, with rolling heat
The Outdoor Living Barrel Sauna Thermo is a round outdoor sauna in 40 mm spruce staves, with facing benches for four and a shingle roof. The round shape keeps the heat rolling around you, so it warms up quickly and stays cosy.
4people
40 mmspruce staves
6 kWHarvia heater
- 1Full-height glass doorOpens outwards
- 2Asphalt shinglesKeep the rain off
- 3Steel hoopsHold the staves tight
- 440 mm spruce stavesHold the heat in
- 5Cradle baseHolds it off the ground
- 6Round front wallHeat rolls around you
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Rolling heat
Hot air rises along the curved walls and cooler air falls to be heated again, so warm air keeps moving around you.
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40 mm spruce staves
Thick spruce staves hold the heat in well and give the sauna a natural, authentic look and feel.
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Facing benches for four
A bench with a backrest runs along each side, so four people can sit facing each other.
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Glass door
A full-height glass door lets in daylight and opens outwards.
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Shingle roof and steel hoops
Asphalt shingles cover the top to keep the rain off, and steel hoops hold the staves tight.
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Backrests on both sides
Each bench has its own backrest, so everyone can sit back in comfort.
Why people love a barrel sauna
- A proper switch-off
- Twenty minutes of dry heat is a simple way to wind down after a long day.
- Warm whatever the weather
- Wet, cold or dark outside, it is a warm place to be in minutes, not hours.
- Time together
- Room to talk, with no screens and no distractions.
- Hot and cold
- Pair it with a cold shower or an ice bath for the full Nordic routine.
What it needs from your garden
It is a small building, so plan the base, the space around it and the power before it arrives.
A firm, level base
Concrete, paving or another hard, level surface, so the staves sit true and it can take about 550 kg, plus the people inside. Don't stand it on grass or soil.
Space around it
The sauna is 182 × 184 cm. The manual asks for at least 5 cm round the sides and 30 cm above. We suggest about 50 cm all round, so it is easy to treat the timber and look after it. At 191 cm tall it is under the usual 2.5 m limit for garden buildings near a boundary, but check with your local council.
A dedicated electric supply
Both heaters are hard-wired, not plugged in. A qualified electrician runs a dedicated supply from your consumer unit, on a standard 230 V supply, with an isolation switch near the sauna.
182 × 184 × 191 cmLength, width and height
55 × 150 cmDoor, width and height
176 × 45 cmEach bench
About 550 kgBuilt weight, before people
Built for a British garden
What is in the staves, the door and the roof.
How this barrel is built
Staves
40 mm spruce.
Thick spruce staves hold the heat well. Treat the timber inside and out twice a year to keep it sound.
What to watch for elsewhere
Thin staves.
Thin walls lose heat quickly, so the sauna takes longer to warm up.
How this barrel is built
Shape
Round, held by steel hoops.
Interlocking staves form the round shell and steel hoops pull it tight. The round shape keeps the heat rolling.
What to watch for elsewhere
Square cabins with corners.
Corners trap cooler air, so the heat is less even.
How this barrel is built
Roof
Asphalt shingles.
Overlapping shingles shed rain off the curve of the barrel.
What to watch for elsewhere
Bare staves on top.
Without a covering, the top of the barrel takes the full force of the weather.
How this barrel is built
Benches
Facing benches with backrests.
A bench runs down each side, so four people can sit facing each other.
What to watch for elsewhere
One bench.
A single bench makes it harder for four to sit comfortably.
Your heater and what it costs to run
Both heaters are Harvia 6 kW, which suits a barrel this size. The Wall comes with the Fenix Wi-Fi panel so you can warm it up from your phone; the Vega is set by hand with dials. Pick one above and the figures here follow your choice.
Recommended
Harvia Vega 6kW
Dials on the heater for heat and timer
- Power
- 6 kW
- Stones
- 20 kg
- Supply
- 35 A, 230 V hard-wired
£1.97a session
£26a month
How we work this out: a 45-minute warm-up at full power, then a one-hour session with the heater on about half the time, so about 1.25 hours at full power. Electricity at 26.32p per kWh, the Ofgem price cap from October to December 2026. A month is 4.3 weeks. Your costs depend on your tariff, the weather and how hot you like it.
Your first sauna session
There is no wrong way to sauna, but this simple rhythm is how most Finns do it.
- Warm it up
Switch on 30 to 45 minutes before. Most people enjoy 70 to 90°C. Take a quick shower first.
- Sit in the heat
Stay 8 to 15 minutes. Sit up tall for more heat, or put your feet up on the bench for even warmth. Ladle a little water on the stones for a burst of soft steam.
- Cool down
Step out for a cold shower, a dip in an ice bath or just fresh air.
- Rest and repeat
Sit down, drink some water, and when you are ready go back in. Two or three rounds is plenty.
A 1-year Outdoor Living warranty
Our own sauna, looked after by our UK team.
Your Outdoor Living Barrel Sauna Thermo comes with a 1-year Outdoor Living warranty, and your Harvia heater is covered by Harvia. If anything goes wrong, call us first and we'll sort it out.
1-year warranty
Help from our UK team
Looking after the timber
Spruce is a natural timber, so a little care keeps it sound and looking good.
Treat it twice a year
Treat the wood inside and out twice a year, with products made for saunas and for temperatures over 110°C. It arrives treated.
Let it dry out
After a session, leave the door ajar so the inside dries. Don't use sealants inside: they can give off fumes in the heat.
Sit on a towel
It keeps the benches clean and stops sweat marks soaking into the spruce.
Check the stones
Re-stack the heater stones once a year and replace any that have crumbled.
What our customers say
Rated by our customers
Independent reviews from people who bought from us, collected and shown by Trustpilot.
Who we work with
Hull FC
Hull City
Queens Park Rangers
DIY SOS The Big Build
Delivery and installation
Here is how your sauna gets to your garden.
Order online
Choose your heater and place your order. Nothing is sent automatically.
We call you
Our team phones to check access, your base and your electrics, and to agree a delivery date.
It arrives
Flat-packed at the kerb, or delivered and built on your base by our installers.
Choose how far we take it
Pick your option at checkout.
Flat-pack kerbside delivery
Build it yourself£149Arrives packed at the nearest accessible point outside your property. The manual takes you through the build. It is a job for three people.
Delivery and installation
We build it for you£899Our installers deliver the sauna and build it on your prepared base. Have the base ready, and a qualified electrician lined up to connect the heater.
Tight access, such as a narrow side path, may affect delivery, so tell us about it when we call. Read the delivery guide
Questions people ask
The things people usually want to know before they buy.
How many people fit?
Four, on two facing benches.
Why a barrel shape?
The curved walls keep the hot air moving round, so the heat is even and it warms up quickly for its size.
Which heater should I choose?
Both are 6 kW. The Wall has the Fenix Wi-Fi panel so you can start it from your phone; the Vega is the lower price and is set by hand.
Does the wood need treating?
Yes. We recommend treating it inside and out twice a year, with products made for saunas and for temperatures over 110°C.
Do I need an electrician?
Yes. Both heaters are hard-wired to their own supply from your consumer unit.
Can I pour water on the stones?
Yes. Both heaters hold stones. A ladle of water on the hot stones makes a burst of soft steam, called löyly.
Which way does the door open?
Outwards, as a sauna door should.
Full specifications
Everything about the Outdoor Living Barrel Sauna Thermo in one place.
Size
- Outside
- L 182 × W 184 × H 191 cm
- Door
- 55 × 150 cm
- Benches
- 2, about 176 × 45 cm, with backrests
- Capacity
- 4 people
- Built weight
- About 550 kg
Build
- Staves
- 40 mm spruce
- Frame
- Steel hoops
- Roof
- Asphalt shingles
- Door
- Full-height glass, opens outwards
Heater and power
- Heater
- Harvia, chosen above
- Options
- The Wall 6 kW with Fenix Wi-Fi, or Vega 6 kW with dials
- Supply
- Hard-wired, 230 V, by an electrician
Space
- Clearance
- At least 5 cm round the sides and 30 cm above
- Base
- Firm, level concrete or paving
Warranty
- Sauna
- 1 year from Outdoor Living
- Heater
- Covered by Harvia
Sizes and bench layout are from the Outdoor Living manual and drawing. Running costs are estimates.