Holl's Hestia 160: 4 to 6 Person Outdoor Sauna
One configuration. The 6kW stove and its stones are in the price; the base and the circuit are yours to arrange.
£7,990.00
- 6kW stove and stones included
- 26.1A at 230V, dedicated circuit
- 649kg on a pallet, kerbside
- Cabin
- Heat treated Canadian pine, 2,050mm wide, 1,600mm deep and 2,200mm tall
- Inside
- Two tiers of abachi benches for four to six seated, or two lying down, with seven colour LED lighting
- Heater
- A 6kW stove with its stones
- Front
- 8mm tempered glass across the front, with a half moon glazed window in the rear wall
- Kit
- Bucket, ladle, sand timer, thermometer and hygrometer
- Electrics
- A dedicated radial circuit in armoured cable, wired and certified by an electrician
- Delivery
- One pallet, 649kg, to the kerb
A four to six person outdoor cabin on a footprint of 2.05 by 1.6 metres and 2.2 metres tall, in heat treated pine, with glass across the front and a half moon window at the back. The 6kW stove and its stones are in the price, and at 2.2 metres it usually needs no planning application.
Delivery & installation
Delivery is included in the price, kerbside to mainland Britain: England, Wales and mainland Scotland. The Scottish Highlands, islands and any address a lorry cannot reach are quoted in writing before dispatch, and if the figure does not suit you, cancel for a full refund. Northern Ireland: write to us before ordering. Nothing is added at checkout.
Delivery to a mainland UK address is in the price. The cabin arrives on one pallet weighing 649kg, set down at the kerb or the nearest firm, level spot the driver's pallet truck can reach; a pallet truck does not cross gravel, grass or a step. From there the parts move by hand, and this is a three to four person job rather than a two person one. We confirm the delivery arrangement for your address in writing when we process your order.
Offshore addresses, the Scottish Highlands and islands, and any address a lorry cannot reach are quoted separately before you order.
Installation is not in the price. It can be arranged for your site where you would rather not build it yourself, and the cost is confirmed before anything is delivered.
Warranty
Four years on the timber and two years on the electronics, the terms Holl's publish for the Hestia.
The UK distributor administers the warranty and raises claims with the maker where needed. The cabin is sold for home use: commercial or very frequent use can affect cover.
Claims come to us. One email, and we deal with the distributor and the maker 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. Your statutory cancellation rights are set out in full in our returns policy.
Check the pallet on the day it arrives, count the parts against the list in the manual, and tell us about anything damaged or missing within 48 hours with photographs. Anything that arrives damaged or faulty is ours to put right. Do not book an electrician or an installer for a fixed date until the delivery has arrived and been checked.
About this product
A heat treated pine cabin measuring 205 by 160cm and standing 2.2 metres tall, seating four to six people on two facing benches, or two lying down. Tempered 8mm glass runs across the front and returns as a half moon window at the rear, so the cabin reads as a garden room rather than a shed with a door.
The price includes the heater. A 6kW stove and its stones ship with the cabin, so what arrives is a working sauna rather than a room you still have to specify.
The structure is Canadian pine treated by heat rather than chemistry, with abachi benches, which stay cool enough to sit on at 90C because the timber carries almost no resin. Seven colour LED lighting is built in. The bucket, ladle, sand timer, thermometer and hygrometer are supplied with it.
At 230V a 6kW element draws 26.1A, so this cabin needs a dedicated radial circuit in steel wire armoured cable, protected by a 30mA RCD at the consumer unit and sized by a qualified electrician. It does not plug into a socket, and we would rather say so here than after you have paid.
The cabin weighs 649kg and arrives on a pallet, delivered kerbside. Moving it from the kerb to its base, and preparing that base, are yours to arrange. Assembly is a three to four person job.
Four year warranty on the timber, two years on the electrics, administered through the UK distributor.
- Secure paymentProcessed by Shopify Payments over an encrypted connection.
- Your details stay privateCard details are never stored on a Tarnfell system.
- Payment on confirmationWe take payment only once your order is confirmed.
- 14 day cancellation rightsCancel within 14 days of delivery, under the Consumer Contracts Regulations 2013.
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. If none of the descriptions below fits you, the right answer is elsewhere in the range, or elsewhere entirely, and we would rather say so.
Two tiers of abachi benches run along the cabin, so four to six people sit, or two lie down on the top tier. The room is 2.05 by 1.6 metres and 2.2 metres tall, which is a proper sauna rather than a cupboard with a stove in it, and under 2.5 metres it usually needs no planning application even within 2 metres of a boundary. The 6kW stove, its stones, the glass front and the lighting are all in the price.
Worth confirmingtwo of you will ever use it. A cabin this size costs more to buy and more to heat than a two seat one, and if it is only ever going to hold two people the smaller outdoor cabins in the range are the honest answer.
It arrives on one pallet weighing 649kg and goes together on a flat, hard, level base that you lay first. The 6kW stove draws about 26 amps, so it needs a dedicated circuit of its own in armoured cable, which is an electrician's job and a notifiable one in England.
Worth confirmingyour supply cannot take another dedicated circuit of this size. That is a real limit in some houses, not a formality, and an electrician can tell you in one visit. If the answer is no, an infrared cabin indoors runs from an ordinary socket and we would rather point you there.
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. Things this size are almost never sent back because they were the wrong product. They are sent back because the pallet could not be set down, the parts would not reach the spot, or the ground under them was never going to hold them.
649kg is the number to respect. That is two thirds of a tonne on one pallet, moving on a pallet truck that needs a hard, level surface from the lorry to wherever it stops. Gravel, grass, a kerb without a dropped edge or a single step all stop it. From wherever the pallet stops, the parts are carried by hand, and the glazed front is the one to plan the route for.
From order to first use.
Here is each stage, and who does what. Delivery is estimated at 10 to 14 working days from order. If you would rather have stock, the date or anything else settled first, email hello@tarnfell.com before you order and we will confirm it in writing.
- Week 0
Order and site check
Base, access and your electrical supply are agreed before the order is placed with the distributor. You arrange the base and the circuit. There is nothing to configure on the cabin itself.
- Before it arrives
The base and the circuit
A flat, hard, level base at least 2.05 by 1.6 metres, and an electrician runs a dedicated circuit to it in armoured cable and leaves it ready to terminate. Outdoor circuits and rooms containing a sauna heater are notifiable work in England, so this is not a job for a competent friend.
- Delivery day
One pallet, 649kg, at the kerb
The cabin arrives on one pallet at the kerb or the nearest firm, level spot the pallet truck can reach. Count the parts against the list that day and photograph anything damaged. Moving the parts to the base is a three to four person job.
- Build
Base frame, walls, glazing, benches
The frame goes down on the base, then the wall sections, the glazed front and the rear window, then the two tiers of benches, working from the maker's instructions. Three to four people. If you would rather hand it over, installation can be arranged for your address once you have ordered.
- Before first use
The electrician returns
The stove is fitted, connected and the circuit tested and certified. You should be handed a certificate. Then the stones go in, loosely, and the first heat cycle burns off the factory smell with the door open.
What owning one actually involves.
The handful of things that decide whether this is still in use in year three.
A flat, load bearing slab or paved base at least 2.05 by 1.6 metres, laid before the pallet arrives. At 649kg this is not a cabin that forgives soft ground or a slight fall, and a base that settles takes the door out of square. The base is not included.
6kW at 230V is 26.1 amps, which is beyond any plug and socket, so the stove runs on a circuit of its own in steel wire armoured cable, protected by a 30mA RCD and certified by an electrician before first use. Worth knowing before you order: a 26 amp addition is the same class of load as an electric vehicle charger, and not every house supply has the headroom.
The pine is treated with heat rather than chemicals, which is what makes it stable outdoors, and the abachi benches stay cool enough to sit on at 90 degrees because abachi carries almost no resin. Left alone the outside silvers over a few seasons. Oil or stain it and you keep the colour, at the price of recoating every year or two.
A glass front and a rear window are what make this cabin worth sitting in, and they are also the reason it loses heat faster than a solid walled one. Harvia's published guidance is that a square metre of glass adds about 1.2 cubic metres to the volume a heater has to serve, which is worth knowing when you judge warm up time in January.
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 £2.35
Heat up: 6kW for an hour is 6 kWh, for a cabin of about 7.2 cubic metres outside with two glazed faces. Holding: 1 hour at roughly 50% duty is 3 kWh. Total 9 kWh at 26.11p is about £2.35.
about £244
104 sessions at £2.35. A two seat outdoor cabin on a 4.5kW heater comes to about £152 on the same sums, which is the price of the extra room and the extra glass.
a few pounds, every few years
Sauna stones crack and crumble with use, are restacked yearly and replaced when they do. They ship with the stove and they are the only consumable part.
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 the stove's rated output of 6kW, not measured on an installed cabin. One hour is our working figure for heat up, for a single skin outdoor cabin of about 7.2 cubic metres with two glazed faces. On a cold, windy night the real figure sits above these numbers rather than below them.
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 stove circuit 6kW draws 26.1A at 230V, so a dedicated radial in steel wire armoured cable on a 30mA RCD. Outdoor circuits and rooms containing a sauna heater are notifiable work in England. | Once, before first use | A qualified electrician |
| Lay the base A flat, load bearing slab or paved base at least 2.05 x 1.60m, able to carry 649kg plus the people in it. | Once, before delivery | You, or a groundworker |
| Build the cabin Frame, wall sections, glazed front, rear window and the two tiers of benches, following the maker's instructions. Three to four people. | Once, over a weekend | You and two or three others, or an installer |
| Restack and inspect the stones Lift them out, discard any that are cracked or crumbling, and restack loosely so air moves between them. Tightly packed or broken stones make the elements work harder. | Yearly | You |
| Dry it out after wet weather Heat the cabin after rain and once a month if it is standing unused, to keep surface mould off the timber. Air it after every session. | After rain; monthly when idle | You |
| Oil or stain the outside, if you want the colour kept Heat treated pine silvers if left alone, which harms nothing. Oil or stain it and recoat every year or two in an exposed spot. The inside stays bare. | Every year or two, if you want the colour kept | You, an afternoon |
| Check the door and glass seals A cabin that heats and cools moves, and a base that settles takes the door out of square. Check the door closes cleanly and the glazing beads are sound at the start of each season. | Yearly | You |
Where this comes from.
Regulation and guidance, linked so you can read it yourself. None of it is our opinion.
- Outdoor circuits and rooms containing a sauna heater are notifiable electrical workApproved Document P, 2013 edition
- Outbuildings within 2 metres of a boundary are limited to 2.5 metres in height under permitted developmentPlanning Portal, outbuildings
- A heater needs about 1 kW for each cubic metre of sauna volume, and a square metre of glass or stone adds about 1.2 cubic metres to that requirementHarvia, how to select the correct heater power
- A dedicated addition sits in the same load class as an electric vehicle charger or a hot tub, which the distribution network operator names as reasons a house may need a larger main fuseUK Power Networks, what do you need to upgrade
- Electricity unit rate of 26.11p per kWh, 1 July to 30 September 2026Ofgem energy price cap
Every figure the makers publish.
- Warranty
- 4 year wood, 2 year electrical warranty
- Lead time
- Estimated 10 to 14 working days from order. We confirm stock and your delivery date in writing when we process your order.
Cabin figures are from Holl's own listing for the Hestia and the UK distributor's product page, checked against European distributor listings for the reference, the weight and the EAN. Where a figure is ours rather than the maker's, it says so.
What arrives, and what does not.
- The cabin: the heat treated pine structure, the glazed front, the rear window, the two tiers of abachi benches and every fixing
- The 6kW stove and its stones
- Seven colour LED lighting, and the bucket, ladle, sand timer, thermometer and hygrometer
- Delivery on one pallet to the kerb at a mainland UK address
- Four years of the maker's warranty on the timber and two on the electronics
- One point of contact for the order, the delivery and anything that goes wrong: us
- The base. A flat, load bearing slab or paved area at least 2.05 x 1.60m
- The electrical work. A circuit in armoured cable, run, terminated and certified by an electrician
- Assembly, unless you ask us to arrange it
- Moving the pallet beyond where the pallet truck stops. From there the parts are carried by hand
- Stain or oil for the outside. Left alone the pine silvers, which harms nothing
- Delivery to offshore and remote postcodes, which is quoted before you order
Reasons to buy something else.
Delivery is by lorry to the kerb, and the pallet weighs two thirds of a tonne. A shared private road, steps to the kerb, a gravel drive or a double parked frontage all need solving before you order, not on the day. From wherever the pallet stops, every part moves by hand.
The stove will not run from a socket. A 26 amp load on its own circuit is the same class of addition as an electric vehicle charger, and whether your house can take it is a calculation an electrician does on site rather than something anyone can promise from a web page. If the answer is no, an infrared cabin indoors runs from an ordinary socket and we would rather point you there.
This is a four to six person room and it costs more to buy and more to heat than a two seat cabin. If two people is the honest answer, the smaller outdoor cabins in the range do the same job for less, and we will say so rather than sell you the bigger one.
A single skin timber shell with two glazed faces loses heat far faster than an insulated wall. This cabin heats and cools quickly, and in January the 6kW stove is working hard to hold 80 degrees. If year round evening use at the lowest running cost is the aim, an insulated cabin costs more for exactly that reason.
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.
Where every figure on this page comes from, with the source beside it.
- Dimensions, timber, glazing and what is supplied
-
Verified
Taken from Holl's listing for the Hestia and the UK distributor's product page, and checked against European distributor listings, which agree on 205 x 160 x 220cm, the heat treated pine structure, the abachi benches and the bucket, ladle, sand timer, thermometer and hygrometer.
- Electrical supply
-
Verified
6,000 watts at 230 volts is 26.1 amps, which is arithmetic rather than a claim, and it puts the stove beyond any plug and socket and onto a dedicated circuit. Steel wire armoured cable and a 30mA RCD are what an outdoor circuit requires under BS 7671. The cable size itself is the installer's calculation on site and this page does not state one.
- Weight, pallet and assembly
Three to four people is the figure the UK distributor gives for handling. The distributor's guidance for this range is 10 to 14 working days, which is the estimate on this page, and we confirm your date in writing when we process your order.
- Warranty administration
Four years on the timber and two on the electronics are the maker's published terms. Claims run through the UK distributor, which raises them with the maker where needed, and you deal only with us. The cabin is sold for home use: commercial or very frequent use can affect cover.
The three closest to it.
Harvia Kaski 180 Panorama: 4 Person Barrel Sauna
From £8,028.00- Up to 4 people, 220cm diameter × 180cm long
- 40mm thermally modified pine
- Electric or wood burning heater included
Holl's Orphée 180: 5 to 6 Person Outdoor Sauna
£7,895.00- 5 to 6 people, 205 × 180 × 215cm
- Barrel
- 9kW Holl's Vulkano stove included
Almost Heaven Huntington: 4 to 6 Person Canopy Barrel Sauna
£7,440.00- Four to six people
- 8kW
- 2.49m long
- covered porch
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.