Harvia Variant View: Glass Front Indoor Sauna
One indoor cabin in six sizes, and the heater, the stones and the accessory kit are already in every price.
From £4,936.80
Free standard delivery on orders placed by 30 September 2026
Delivery from £250 on orders placed after that
Exact cost confirmed for your postcode before dispatch.
Typically 8 to 10 weeks, depending on availability and the season. Email us for a current date, or we confirm yours when you order.
- Harvia The Wall heater, stones and the accessory kit included
- White corner light fitted, or Harvia's DMX controlled RGBW set
- 2.02m external height on every size
- Cabin
- Element cabin, walls and ceiling in natural spruce inside and out
- Front
- Large glass walls across the front, so the room stays light
- Benches
- Aspen, and they can be built on either side of the cabin
- Heater
- Harvia The Wall included and sized to the cabin: 4.5kW, 6kW or 8kW
- Controls
- Illuminated switches on the heater itself, so there is no separate panel
- Stones
- 20kg with every heater in the range
- Electrics
- 25A on the 4.5kW, 35A on the 6kW and 8kW, all 230V single phase
- Lighting
- White corner light fitted, or Harvia's DMX controlled RGBW set
- Also included
- The accessory kit: ladle, bucket, thermometer and hygrometer, and a sand timer
Six sizes of the same cabin. The size decides the heater, the heater decides the circuit, and the circuit is the part of this purchase people wish they had checked first.
Delivery & installation
Delivery is available across the UK and the charge is confirmed for your postcode in writing before anything is dispatched. Offshore and some remote postcodes cost more, and we tell you the figure before you commit rather than after.
The cabin arrives flat, as wall, roof and glass elements with the benches, heater and fittings boxed separately. Gross weights run from 275kg on the smallest size to 465kg on the largest, so plan the route into the room before the lorry arrives rather than on the day.
Installation can be arranged where you would rather not build it yourself. Once you place your order we confirm the delivery and installation options for your location, and nothing is dispatched until you are happy with both.
Warranty
Two years on the cabin against manufacturing defects, and two years on The Wall heater and its controls, under Harvia's published warranty terms. Registering the heater with Harvia adds a third year on it, and it is worth doing on the day the electrician signs off rather than remembering it in year three.
Harvia name the exclusions plainly, and they are the parts that wear: heating elements, timers, relays, light bulbs and sauna stones. Anything caused by not following the installation, use or maintenance instructions is excluded too, which on an indoor cabin usually means the ventilation or the electrical connection rather than the cabin itself.
The warranty runs from the date of purchase. Harvia's own terms allow a claim to be made to the seller, so claims come to us. One email, and we deal with the distributor and Harvia on your behalf rather than handing you a phone number.
Returns
Until the order is placed with the supplier you can cancel and be refunded in full, with no reason needed.
After that the cabin is on its way from the factory, and our returns policy sets out exactly where that leaves you. Check the packages against the parts list on the day they arrive and tell us about anything damaged or missing straight away; anything that arrives damaged or faulty is ours to put right either way.
Who this is actually for.
Every product here is described with the honest opposite beside it: who it suits, and who should be looking at something else.
The whole front of this cabin is glass. In a converted bedroom, a garage corner or the end of a gym it reads as part of the room rather than a wooden box shut against the wall, and you can see in and out of it.
Worth confirmingyou want it outside. This one is built for a dry interior and has no roof, no cladding and no weather detailing. A garden cabin is a different product and we would point you at one.
Every price on this page already contains the heater, its 20kg of stones, a light and the accessory kit: ladle, bucket, thermometer and hygrometer, and a sand timer. There is no second order to place and nothing to size yourself.
Worth confirmingyou already own a heater you like, or you want a particular control system. Then a cabin on its own and a heater bought separately is the cheaper and better route, and we will say so.
Two of the six are corner cabins, built to sit into the angle of a room rather than along a wall. On the same footprint that usually buys back a metre of usable floor somewhere else.
Worth confirmingyou have a long straight wall and nothing else to work around. Then the straight cabins give you more bench for the money and there is no reason to pay for the corner.
The product that gets used is the one worth recommending, and it is not always the largest one.
The measurements that decide it.
Read this before anything else. An indoor cabin is almost never sent back because it was the wrong product; it is sent back because it would not go up the stairs or stand up in the room.
All six sizes stand 2.02m tall, so the finished cabin fits a normal room. The height you need to build in is more than that, because the wall elements are tipped upright during assembly.
From order to first use.
Here is each stage, and who does what. Before you order, email hello@tarnfell.com and we will confirm the current lead time and the delivery cost for your postcode in writing.
- Week 0
Size and circuit agreed
Pick the size against the circuit an electrician can actually give you, not the other way round. Ceiling height, floor and the route into the room are checked at the same time.
- Before it arrives
The circuit
25A for the 4.5kW cabin, 35A for the 6kW and 8kW cabins, 230V single phase, run to the heater position and left ready to terminate. A room containing a sauna heater is notifiable work.
- Delivery day
To the door, in elements
Wall, roof and glass elements with the benches, heater and fittings boxed. Between 275kg and 465kg in total depending on size. Check everything against the parts list on the day; that is the easy time to find a shortage.
- Build day
Two people, working from the manual
Elements up, glass in, roof on, benches fitted to whichever side you have chosen, then the heater hung. We can arrange installation instead.
- Before first use
The electrician returns
The heater and the lighting are terminated and the circuit tested and certified. You should be handed a certificate.
What owning one actually involves.
The handful of things that decide whether this is still in use in year three.
Every size ships with illuminated switches built into The Wall heater itself. Fewer parts, nothing extra to wire, and no app. If you want scheduling or a phone, this is not the cabin for it and we would point you elsewhere rather than sell you an upgrade path that does not exist.
Harvia design this cabin so the benches can be installed on either side. It is not a variant to order and it costs nothing; it is a decision made with the manual open, once you can see how the door opens into your room.
A white corner light is fitted and working on the day it is built. The colour option is Harvia's own RGBW set for this cabin, matched to the size, run through a DMX driver with its own power supply and remote, which is what gives you control of both colour and brightness rather than colour alone.
The RGBW set is matched to the cabin size and is fitted while the cabin is being built. Adding it afterwards means taking panels apart again, which is why it is a choice on this page rather than something to come back for.
Spruce swells and shrinks with the seasons and can weep resin from a pitch pocket when it is heated. Acetone on a rag takes it off. Aspen is used for the benches because it stays cooler to sit on than spruce does.
The running costs, with the working shown.
The purchase price is public; the running cost rarely is. Ours are published with the assumptions stated, so you can check the arithmetic and change it for your own tariff.
about £1.64
Heat up 4.5 kWh, then an hour holding at roughly 40% duty is 1.8 kWh. Total 6.3 kWh at 26.11p.
about £2.19
Heat up 6 kWh, then an hour holding at roughly 40% is 2.4 kWh. Total 8.4 kWh.
about £2.92
Heat up 8 kWh, then an hour holding at roughly 40% is 3.2 kWh. Total 11.2 kWh. Twice a week for a year is about £304 against £171 on the smallest cabin.
Assumptions: electricity at the Ofgem price cap unit rate of 26.11p per kWh, 1 July to 30 September 2026, including VAT. Figures are calculated from each heater's rated output, not measured on an installed cabin. An indoor cabin inside a heated house loses far less than a garden one.
What you have to do, and what the rules require.
Everything you have to do, and how often.
| Job | How often | Who |
|---|---|---|
| Install and certify the circuit The Wall SW45 4.5kW: 230V single phase, 25A, 3 x 2.5mm2. The Wall SW60 6kW and SW80 8kW: 230V single phase, 35A, 3 x 6mm2. Notifiable work in England and Wales. | Once, before first use | A qualified electrician |
| Restack and inspect the stones Lift them out, discard any that are cracked or crumbling, and restack loosely so air moves between them. Every heater in this range takes 20kg. | Yearly | You |
| Air it after use Leave the door open until the room is dry. | Every session | You |
| Wipe the benches down A damp cloth and warm water only, nothing film forming. | Monthly, or after heavy use | You |
| Heat it even when you are not using it Harvia recommend a heating cycle roughly monthly if the cabin stands idle, to keep mould out of the timber. | Monthly when idle | You |
Where this comes from.
Regulation and guidance, linked so you can read it yourself. None of it is our opinion.
- A room containing a sauna heater is notifiable electrical workApproved Document P, 2013 edition
- A sauna heater must not be protected by a residual current device, while other circuits in the room must beBS 7671 regulation 703.412.5
- The Wall SW45 is 4.5kW, 230V single phase, 25A, 3 x 2.5mm2, 20kg of stones, 3 to 6 cubic metresHarvia, The Wall SW45 product data
- The Wall SW60 is 6kW, 230V single phase, 35A, 3 x 6mm2, 20kg of stones, 5 to 8 cubic metresHarvia, The Wall SW60 product data
- The Wall SW80 is 8kW, 230V single phase, 35A, 3 x 6mm2, 20kg of stones, 7 to 12 cubic metresHarvia, The Wall SW80 product data
- Both exterior and interior walls and ceiling are spruce, benches are aspen, and the cabin is for a dry interiorHarvia, Variant View S2020SV product page
- Electricity unit rate of 26.11p per kWh, 1 July to 30 September 2026Ofgem energy price cap
Every figure the makers publish.
- Warranty
- 2 year cabin and heater warranty
Cabin sizes, heater outputs and the contents of the price are from the distributor's own product records for the six Variant View codes. Heights, weights, timbers and use environment are from Harvia's own product pages for the same cabins. Heater figures are Harvia's published data for The Wall SW45, SW60 and SW80. Where a figure is not published, this table says so rather than estimating it.
What arrives, and what does not.
- The cabin as spruce elements, walls and ceiling, inside and out
- The glass front walls and the door
- Aspen benches, buildable to either side of the cabin
- A Harvia The Wall heater sized to the cabin, with its switches built in, and 20kg of stones
- The lighting you choose, fitted: the white corner light as standard, or Harvia's RGBW set for this cabin size with its power supply, remote and DMX driver
- The accessory kit: ladle, bucket, thermometer and hygrometer, and a sand timer
- The electrical work. A dedicated 230V single phase circuit, run, terminated and certified
- Assembly, unless you ask us to arrange it
- Delivery. It is quoted for your postcode and confirmed in writing before dispatch
Reasons to buy something else.
This cabin is specified by Harvia for a dry interior. It has no roof, no cladding and no weather detailing, and putting one outside would ruin it. A garden cabin is a different product.
The switches are on the heater. There is no app, no WiFi and no way to add one. Say so now and we will point you at a cabin with a separate control unit.
Five of the six sizes need the same order of supply as an electric shower. If that is not available, the 1210 cabin at 25 amps is the honest answer rather than a downgrade.
It is a real difference in price, between £696 and £1,170 depending on size. If the colour is what you want, buy it here; if it is not, the white corner light cabin is the same sauna for less.
A timber cabin in a damp room is a mould problem waiting to start. Fix the room first; we would rather lose the sale.
If any of these apply, say so and we will point you at what does suit you, including when that is a cheaper product or one we do not sell.
What we know, and how we know it.
Not a rating. A record of where every figure on this page comes from: what we have checked against a published document, what a maker states and we have not yet checked, and what is still open.
- Sizes, heights, weights and timbers
-
Verified
Footprints and heater outputs are from the distributor's own product records for the six Variant View codes. Heights, gross weights, timbers and the dry interior use environment are from Harvia's own product pages for the same six cabins.
- Electrical supply by heater
-
Verified
The 25A and 35A figures and the cable sizes are Harvia's published data for The Wall SW45, SW60 and SW80, the three heaters supplied with these cabins.
- What is in the price
-
Information not yet published
The distributor's product record for each code lists The Wall heater, a white corner light and an accessory kit of ladle, bucket, thermometer and hygrometer and a sand timer. Nothing beyond that is claimed here.
- Which heater ships with each size
-
Information not yet published
Taken from the distributor's product titles code by code. The 1635 x 1635 corner cabin carries an 8kW heater while the 1635 x 1607 straight cabin carries a 6kW, which we are confirming in writing before this page becomes buyable.
- Lighting
-
Verified
The RGBW option is Harvia's own set for this range, one code per cabin size: 2 lights on the 1210, 3 on both corner cabins and 4 on the remaining three, each with power supply, remote control and a DMX driver.
- Capacity, internal volume and wall thickness
-
Information not yet published
None of these are published by Harvia for this range. All three are being confirmed with the distributor and are not published here until they are.
These states move as the evidence does. When a figure is measured on an installed cabin, by us or by an owner who will let us, it moves from stated to verified and this section says so.
Weighing this against another sauna? Let us do the homework.
Choosing between two saunas takes evenings of research, so let us carry it. Name the other one you are considering and we will send a straight comparison, including where the other one wins.