The Slim Two electric sauna, three-quarter view: the glass door, the clear roof cover and the side wall
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The Slim Two Electric Outdoor Sauna, Harvia Heater Included

Harvia BC60 heater included

Your buildAs standard
£3,195
£3,195
Harvia BC60 heater included
External size 160 × 120 cmFootprint and door, at a glance
two seatsdoor160 cm120cm

That is 1.9 m² on the ground, 2.15 m tall. A firm, level base is all it needs: slab, paving or compacted gravel.

01Your heater

The BC60 is in the price. Harvia rates it for rooms of 5 to 8 m³. It runs on a 35 A single-phase supply, or 3 × 10 A three-phase. The dedicated supply and final connection by a competent electrician are not included.

02Your door

IncludedGlass doorFull height, in a timber frame. Included in the price.

03Stones for the heater

HarviaSauna stonesNot in the cabin price. The BC60 takes 20 kg: one box.

04Add accessories optional

HarviaHarvia sauna set: pail, ladle, gauge and timerPail, ladle, gauge and timer in one go.
HarviaHarvia sauna pail and ladle, timberTimber pail and ladle, the two you actually reach for.
HarviaHarvia Black Steel sauna setPail, ladle and gauge in matt black stainless.
HarviaHarvia sauna thermo-hygrometer, alderTemperature and humidity on one alder plate.
4Living4Living sauna thermo-hygrometer, heat-treated alderThe same two readings, darker frame.
HarviaHarvia sauna sand timer, 15 minutesFifteen minutes, no battery to die in the heat.
Timber sauna thermometerThe simplest way to know where the room is.
HarviaHarvia Bluetooth sauna speaker, blackIPX6, rated to 65 °C. Keep it low, not by the ceiling.
RentoRento birch sauna whiskBirch leaves, bound by hand. Soak before the first use.
RentoRento sauna fragrance gift box, three by 400 mlThree fragrances for the water in the ladle.
Eucalyptus sauna fragrance, 500 mlEucalyptus, a few drops in the ladle.

Your build

Size160 × 120 cm
HeaterHarvia BC60 · 6 kW
DoorGlass door
Add-onsNone
Payment🔒 Secure transaction
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You arrange the prepared base and the fixed electrical connection. On-site assembly is not included.

Made to order · built at the factory, then sent to your kerb.

Prefer to talk now? WhatsApp

Prefer to write? Send your build by form
Runs on UK single-phase powerIts own 35 A circuit, wired by a qualified electrician under Part P · not included in the price
Kerbside delivery, UK mainlandTypically 2 to 4 weeks · remote areas priced at checkout
Warranty coverRead what’s covered →
Electric heater setupDedicated 35 A circuit (or 3 × 10 A on three-phase), installed and certified by a competent electrician. Not included in the price.
  • The heater runs on 230 V single-phase or 400 V three-phase. Most UK homes use the single-phase option.
  • Harvia specifies rubber cable of type H07RN-F or equivalent. PVC-insulated cable is not permitted.
  • Final cable sizing, protective device and certification are the electrician’s call under BS 7671.
  • The heater hangs on the wall on its bracket; Harvia gives the clearances round it in the heater manual.
  • The supply and the connection are not in the price of the sauna.
View details
The Slim Two

One narrow cabin for two, in two lengths.

Not sure which? Measure the spot first: the shorter cabin needs 160 × 120 cm, the longer 240 × 120 cm.

The Slim Two, three-quarter view: the glass door and the clear roof cover
The Slim Two · 160 cm£3,195 with mainland delivery · stones extra
  • 160 × 120 cm, 2.15 m tall: 1.9 m² on the ground.
  • Harvia BC60 6 kW, in the price. Its own 35 A circuit: your electrician, not in the price.
Build this one
The Slim Two XL, three-quarter view: the frosted glass door and the long side wall
The Slim Two XL · 240 cm£3,395 with mainland delivery · stones extra
  • 240 × 120 cm, 2.15 m tall: 2.9 m² on the ground.
  • Harvia BC60 6 kW, in the price. Its own 35 A circuit: your electrician, not in the price.
See the 240 cm →

Wider cabins, for three to six: The Cabin Three · seats 3 · The Cabin Four · seats 4 · The Cabin Six Two-Tier · seats 6

Seats2a narrow cabin for two
Outside160 × 120 cm1.9 m² on the ground, 2.15 m tall
Heater6 kWHarvia Vega BC60, in the price
Stones20 kgone box fills the heater; not in the price
Weightabout 300 kgthe cabin, as the factory lists it
Delivery2–4 weeksto your kerb, in the price on the mainland
Point by point

What is the cabin made of?

Six parts, one at a time. Pick a number on the photo, or use the arrows to go through every close-up.

The Slim Two, three-quarter view: the tinted glass door, the clear roof cover and the side wall
Handle
timber bar, on the glass
Hinges
three
Glass
tinted, as photographed
The timber bar handle on the glass door1 / 3
What is the door like?
A full-height glass door in a rounded timber frame.

A timber bar handle on the glass and three hinges down one side. On this cabin the glass is tinted, as in the photographs.

In the garden

How will it look in your garden?

1.9 m² on the ground and 120 cm wide: room enough beside a fence or along the side of a house. From three sides, then the details close up.

The Slim Two, three-quarter view
Three-quarter view, the tinted glass door
The Slim Two from the front
From the front
The Slim Two from the back
From the back: the round vent
The clear roof cover screwed down under a timber batten
The clear roof cover
The two base beams, the rounded corner and a steel strap
Two base beams and a strap
The timber bar handle and a hinge on the glass door
The timber bar handle
6 photos · drag or use the arrows
1Inside

What is it like inside?

A cabin for two, timber-lined, with the Harvia heater on the wall.

Inside The Slim Two: backrest boards on two walls and the round vent, before the benches go inBackrests on two walls, the vent above
Inside The Slim Two, looking out: the floor boards and the door openingThe floor boards, looking out
Harvia Vega BC60 on the wall, filled with stonesHarvia Vega BC60, on the wall

The two photographs of the room were taken before the benches went in. The heater is shown filled with stones; stones are sold separately.

Seats2a cabin for two
Heater6 kWHarvia Vega BC60
Stones20 kgone box, sold separately
Outside160 × 120 cm2.15 m tall

Harvia Vega BC60, 6 kW, in the priceHarvia rates it for rooms of 5 to 8 m³. Timer and thermostat on the heater.
StonesNot in the cabin price: it takes 20 kg, one box, £69 in the build.
What we have measuredNot yet: this cabin’s heat-up time and operating temperature are still to be measured in a built cabin.
Through a British winterBuilt as an outdoor cabin. Treat the outside before its first winter.
Harvia Vega BC60: the timer and thermostat knobsTimer and thermostat on the front
2Full cost

What will it really cost?

The price covers the cabin, the Harvia BC60 heater and kerbside delivery to the UK mainland. Stones and any delivery surcharge for your area are priced before checkout; a base, the electrician and the exterior treatment are yours. All listed here, before you pay.

What the price covers, and what it does not. Add or remove the stones right here and the price changes everywhere on the page.

stoneson toptimer,thermostaton the wall
The heater

The price includes the Harvia Vega BC60 with its timer and thermostat. Stones are the one thing the first session needs that is not in the price: it takes 20 kg, one box.

Harvia BC60
In the pricenot an upgrade
Power
6 kWrated for rooms of 5 to 8 m³
Supply
35 Aits own circuit, your electrician
Sauna stones · 20 kg box
+£69Not added
Inside this chapter · 3 parts

Harvia Black Steel setPail, ladle and gauge in matt black stainless.Not added
Harvia thermo-hygrometerTemperature and humidity on one dial.Not added
4Living thermo-hygrometerThe same two readings, a darker frame.Not added
Timber thermometerTemperature only.Not added
Drag or use the arrows for more

Not in the price: plan for these
A firm, level baseConcrete slab, paving slabs or compacted gravel, for the 160 × 120 cm footprint.
You arrange
Your electricianNot in our price. The Harvia heater needs its own circuit, 35 A single-phase or 3 × 10 A three-phase, fitted and certified by a qualified electrician: ask for their quote before you order.
What to show them ↓
Sauna stonesFor the BC60: 20 kg, one box, £69.
Not added
The last metresDelivery stops at the kerb: the last metres to the base are yours to arrange.
You arrange
Exterior wood treatmentAny exterior preservative or stain, outside only. The inside stays bare wood.
Any DIY shop

Harvia BC60: in the price, not an upgrade
Mainland delivery: in the price; a surcharged postcode sees its figure in chapter 3, before checkout
Stones: £69 a 20 kg box: priced here, before you order
Kerbside: means the kerb: the last metres into the garden are yours
Electrician: yours to arrange, and we say so before you pay
Change of mind: the return pallet is at your cost, typically £150 to £250
3Site and planning

Will it work where you live?

Three checks, all before you pay. The one that decides it is the circuit from your house.

Start with your postcode.

We answer what we can from it and tell you who decides the rest.

In the price
Delivery to your kerb

UK mainland, typically 2 to 4 weeks from order. A few areas carry a surcharge: your postcode shows the figure.

The Harvia BC60 heater
Your electrician decides
The heater circuit

35 A from your consumer unit, or 3 × 10 A three-phase. The sheet below has what they need; the quote comes before the order.

The Slim Two from the front
Check your site
Planning

Usually permitted development in England and Wales: 1.9 m² on the ground, 2.15 m tall. Height, distance to a boundary, conservation areas and listed settings change it: your postcode gives your country’s rule.

Delivery by area: UK mainland in the price · Isle of Wight £49 · Scottish Highlands £79 · Northern Ireland £99 · Scottish Islands £149 · Isle of Man: contact us before ordering · Channel Islands, Isles of Scilly and BFPO not served. The figure for your postcode is the one checkout uses.

Inside this chapter · 3 parts

Drawing: the heater’s own circuit from the consumer unit, by armoured cable, to an isolator at the cabin
35 A · BC60Part P
Drawing detail: the consumer unit and the heater’s own circuit1 / 1
Will my house supply take it?
Its own 35 A circuit from your consumer unit.

The Harvia BC60 runs on UK single-phase, or on three-phase where you have it. Your electrician decides the rest: the main fuse, what else shares it, the distance and the cable route. An electric shower or an EV charger on the same supply changes the design.

Show this to your electrician
  • Heater: Harvia Vega BC60, 6.0 kW, wall-mounted
  • Supply: 230 V single-phase, 1 × 35 A, or 400 V three-phase, 3 × 10 A
  • Heater connection cable: rubber-insulated, H07RN-F or equivalent, as the Harvia manual specifies. PVC is not permitted
  • For the quote: the house supply, the cable route to the cabin and any groundworks, the heater connection, testing and certification
  • Design, installation, testing and certification to BS 7671; notifiable under Part P in England and Wales
  • Clearances round the heater, as the Harvia manual gives them
  • Not in our price. Get the quote before you order the sauna

The Slim Two from the back
Not sure about the spot?

Send a photo and your postcode on WhatsApp and we will look at it with you: the route in, the distance to the house, the door facing the right way.

WhatsApp a photoRequest a callback
4Delivery

From the order to your kerb

Made to order, delivered to your kerb by lorry, typically in 2 to 4 weeks on the UK mainland.

1Made to order

Your cabin is made to order at the factory. Before it leaves, we ask for a photograph of your packed order and pass it on to you.

2The day is booked

Our carrier calls to book the day, so that you can be there to check the delivery. Order to kerb is typically 2 to 4 weeks on the UK mainland. A few postcodes carry a surcharge: chapter 3 shows yours.

3Set down at the kerb

It comes by lorry and is set down at the kerb, on the nearest hard, level standing: driveway or road, not grass, gravel or a slope. The lorry needs room to stop there. The driver does not carry it into the garden.

4Check before you sign

Note any damage on the delivery note and take photos, then check the parts. Email us within 14 days and we replace damaged or missing parts free of charge, delivery included.

Before it arrives: the base
A firm, level pad for the 160 × 120 cm footprint: a concrete slab, paving slabs or compacted gravel.
Level: the two base beams go down level and square.
No water connection: no mains water is needed.
Who builds it

You do, or a local joiner does: we do not offer assembly for any of our cabins.

The last metres are yours: the delivery stops at the kerb.
The heater connection is your electrician’s: a separate job, booked before delivery.
5Warranty and returns

Who am I paying, and what if something goes wrong?

Waldenhaus Limited, a UK company. Each of these has a written answer before you pay.

Inside this chapter · 3 parts

If this happensWhat we doYou haveWho pays
It arrives damaged or shortNote it on the delivery note, take photos and email us within 14 days of delivery. We replace damaged or missing parts free of charge, delivery included.14 daysWe pay
A part fails2-year warranty against manufacturing and material defects, from the day of delivery, on the cabin and everything supplied with it. Parts, not a new cabin: we send the board, fitting or panel that is needed.2 yearsPart free
The heater failsHarvia’s own warranty as well as ours: 2 years for home use, plus 1 year if you register it with Harvia within 30 days. Harvia requires the connection to be made by a qualified electrician.2 + 1 yearsHarvia
You need a part laterWe keep replacement parts for 10 years from your purchase date.10 yearsYou pay
You change your mind14 days from delivery to cancel and a further 14 days to send it back, unused and in its packaging. Return is by pallet freight, which you arrange: typically £150 to £250 from a UK mainland address.14 daysPallet yours

What the warranty does not cover
The full warranty terms →
Surface weathering and seasonal movement of the timber: solid timber moves with the seasons
Damage from incorrect assembly or from modifications, or from an electrical connection not made by a qualified electrician
Impact damage, and damage from sustained wind above 50 mph or any Met Office Named Storm

Faulty or damaged goods are a different case from a change of mind: tell us and we arrange and pay for everything. Your statutory rights are not affected.

A UK company

Company No. 16877766 · VAT GB519957245

Waldenhaus Limited, 71-75 Shelton Street, London WC2H 9JQ. Check the public register before you pay.

Open the Companies House record
Who answers, and how

WhatsApp, a callback, or email.

Send your order number, a photo of the problem and a line on when you noticed it to support@waldenhaus.uk or on WhatsApp. We answer within 2 working days.

WhatsAppRequest a callback
6Care and upkeep

Will it leak, rot or go mouldy?

Three jobs matter: treat the outside and leave the inside untreated; after each session leave the door open until the room is dry; and look the roof cover and the straps over once a year.

The clear roof cover and its batten
Roof cover

Look it over once a year: the screws along the battens and the edges of the sheet.

The back wall
Walls

Treat the outside as your exterior finish specifies; the inside stays bare wood.

The round vent on the back wall
Vent

After each session, leave the door open until the room is dry.

The base beams under the cabin
Base

Keep the base free-draining, so the beams never sit in water.

Parts for ten years

We keep replacement parts for 10 years from your purchase date: a board, a fitting, a panel.

How long will it last?

We do not put a number of years on it. The written warranty is 2 years; the rest is the three jobs above.

?FAQ

What is still on your mind?

Pick a subject, or type it.

Is two people realistic?

⌄
Yes. It is a narrow cabin for two. For more room, look at the longer Slim Two XL, or at The Cabin Three, which seats three.

Why is it so narrow?

⌄
At 120 cm wide it fits where a wider cabin will not: along a fence, beside a house, in a small garden.

Do I need planning permission?

⌄
Garden buildings are usually permitted development in England and Wales; this cabin covers 1.9 m² and stands 2.15 m tall. Height, distance to a boundary, conservation areas, listed settings, flats, Scotland and Northern Ireland all change the answer. Check the Planning Portal and your council before you order.

Should I tell my home insurer?

⌄
Yes, before delivery. Ask your insurer whether your policy covers the cabin and its heater, and which installation documents they need.

Where in the garden should it go?

⌄
Close to the house: you walk back from it in a towel. Face the glass door to the fence or the house, not the street, and leave room to walk round it.

Can I use it through a British winter?

⌄
It is built as an outdoor cabin, and we have not yet measured how it heats up in winter. Treat the outside before the first season.

Does it use a lot of electricity?

⌄
Only while the heater is on: 6 kW at full power for the BC60, nothing on standby. What an evening costs depends on your tariff and how long you keep the room hot.

Is the heater included?

⌄
Yes. The Harvia Vega BC60, 6 kW, is in the price, with its timer and thermostat on the heater; Harvia rates it for rooms of 5 to 8 m³. Stones are not: it takes 20 kg, one box. The heater circuit is your electrician’s job: ask for the quote before you order.

What does delivery cost?

⌄
Kerbside delivery to the UK mainland is in the price. The Isle of Wight is +£49, the Scottish Highlands +£79, Northern Ireland +£99 and the Scottish islands +£149, shown by postcode before checkout. For the Isle of Man, contact us before ordering; the Channel Islands, the Isles of Scilly and BFPO addresses are not served.

Does it need a water supply?

⌄
No. There is no water connection: you bring a pail of water in for the stones.

What exactly is it made of?

⌄
Solid timber boards for the walls, timber benches, a full-height glass door in a timber frame, and a clear sheet over the curved top.

What about children and the heater?

⌄
Keep children away from the heater, and do not leave them alone in the hot room.

Is a sauna safe for everyone?

⌄
We sell the cabin and do not give medical advice. If anyone in the household is pregnant or has a heart or blood-pressure condition, ask a GP before using any sauna.

Can I take it with me if I move house?

⌄
Plan the site as permanent: moving it is not something we provide for.

What if it arrives damaged or short?

⌄
Check the delivery before the driver leaves. Note any damage on the delivery note and take photos, then email us within 14 days of delivery with the photos and your order number. We replace damaged or missing parts free of charge, delivery included.

Can I send it back?

⌄
Yes. You have 14 days from delivery to cancel and a further 14 days to send it back, unused and in its packaging. Return is by pallet freight, which you arrange and pay for: typically £150 to £250 from a UK mainland address. Faulty or damaged goods are a different case: tell us and we arrange and pay for everything.

Will we actually use it?

⌄
The honest risk with any sauna is the habit, not the build. A cabin for two suits a couple who will use it every week. If you have never kept a sauna habit, try a month at a local gym first.

Who am I buying from?

⌄
Waldenhaus Limited, 71-75 Shelton Street, London WC2H 9JQ, Company No. 16877766. We sell garden structures for British weather: greenhouses first, and now saunas.

What are my legal rights?

⌄
The Consumer Rights Act 2015 applies: goods must be as described, of satisfactory quality and fit for purpose. Distance orders carry a 14-day cancellation right under the Consumer Contracts Regulations 2013. These come from the law, whoever you buy from.
Did not find it?

Ask us. We answer within 2 working days.

WhatsAppRequest a callback
Answered in a chapter above
Will my house supply take it?Do I need planning permission?What will it really cost?Will it leak, rot or go mouldy?What if something goes wrong?
The Slim Two, three-quarter viewThe Slim Two
Your build

Two seats, one narrow cabin.

Size160 × 120 cm · two seats
HeaterHarvia BC60, 6 kW
DoorGlass door
Add-onsNone
DeliveryIn the price, UK mainland
£3,195Heater included
Add to basket · £3,195
Change the buildWhatsApp
14 days to change your mind
Unused, in its packaging; the return pallet is yours.
2-year written warranty
From Waldenhaus Limited, a UK company.
Heater included
Harvia Vega BC60, 6 kW.