Holl's Moon 2: 2 Person Infrared Sauna
One decision, natural or black, and everything else shown is already in the price.
£3,995.00
- Two quartz full spectrum emitters and six carbon panels, 2,305W
- Plugs into an ordinary 13A socket
- Delivery confirmed before dispatch
- Cabin
- A round cabin 1,300mm across and 1,960mm tall, hemlock outside, abachi inside
- Inside
- One bench for two, with holders for a phone, a drink, a towel and a magazine
- Heat
- Two quartz full spectrum emitters and six carbon panels, 2,305W in total
- Controls
- A touchscreen with WiFi, so it can be started from your phone
- Sound and light
- A Bluetooth speaker in the ceiling, ambient ceiling light and a colour strip under the bench
- Glass
- A curved 8mm toughened glass door with a full length handle
- Electrics
- 220 to 240V, about 10A at full output
Infrared is not a smaller sauna, it is a different thing: no stones, no steam and no long warm up, and a session that costs pennies. The Moon is the round one, which is not decoration: the curved wall puts the panels behind and beside you rather than in flat corners.
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.
The cabin arrives in sections for assembly indoors.
If you would rather not build it yourself, we can introduce you to an independent installer near you, typically from £650, paid to them directly. Once you place your order we confirm your delivery date, and if you want an installer we introduce you to an independent one near you.
Warranty
Ten years on the wood structure and two years on the electrical components, which are the terms Holl's publish for the Moon in its February 2026 specification sheet.
The UK distributor administers the warranty and raises claims with Holl's where needed. The cabin is sold for home use: the distributor does not supply it for commercial use, and commercial or very frequent use can affect cover.
Claims come to us. One email, and we deal with the distributor and Holl's 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 distributor, 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 within 48 hours; anything that arrives damaged or faulty is ours to put right either way.
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About this product
The Moon 2 is a cylinder 1,300mm across and 1,960mm tall, hemlock outside and abachi inside, closed by a curved 8mm toughened glass door. Two people sit side by side on the bench. The heat comes from two quartz full spectrum emitters and six carbon panels, 2,305W in total, placed in front of the bench, behind it and beneath it, so the warmth reaches you from three sides rather than one.
The control panel is a touchscreen with WiFi, which means a session can be set going from a phone before you walk out to it, and there is a Bluetooth speaker in the ceiling beside the lighting. It runs on a 220 to 240V supply, plugs into an ordinary 13A socket and lives indoors.
Natural hemlock or black: same cabin, same heaters, same price. The only decision is which finish suits the room it is going in.
- 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.
2,305 watts is about 10 amps at 230 volts. Every traditional sauna on this site needs its own circuit and an electrician's certificate; this one plugs in. The distributor confirms the Moon 2 is a plug in cabin, so a 13 amp wall socket in a dry room is the whole electrical requirement.
Worth confirmingyou want a Finnish sauna. This makes no steam, there are no stones and you cannot throw water. It warms you rather than the air, and people who wanted the other thing are always disappointed.
There is no long warm up and a session costs about 55p, so it gets used on a Tuesday evening rather than saved for the weekend. The touchscreen has WiFi, so the cabin can be switched on from your phone and be warm when you walk in. That is the honest case for infrared: not that it is better, but that it is used more.
Worth confirminga sauna is an occasion for you. If the ritual of stones, water and real heat is the point, a traditional cabin is the point with it, and the 3.5kW Zen 2 is the smallest one in the range that delivers it.
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.
The height is the one to check. At 1.96 metres the Moon clears a standard 2.4 metre ceiling comfortably, but the curved sections still have to be tipped upright to assemble it, so a room with a sloping ceiling or a low beam needs measuring where the cabin will actually stand, not at the door.
From order to first use.
Here is each stage, and who does what. Delivery is estimated at 7 to 10 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
Finish and room check
Natural or black, and where it stands. A 1.3 metre circle with a door that swings outward needs more clear floor than its footprint suggests, so we agree the position with you before the order is placed.
- Before it arrives
A socket in the right place
A 13A wall socket within reach of where the cabin will stand, on a circuit that is not already carrying something heavy. The distributor confirms the Moon 2 is a plug in cabin, so the connection needs no electrician.
- Delivery day
To the door, in sections
Check the packages against the parts list on the day they arrive and tell us about anything damaged or missing straight away. Two people to carry the curved panels through the house.
- Build day
Two people, working from the manual
The curved wall sections, the door and the roof go together with fixings rather than trades, then the bench, the panels and the control are connected. If you would rather hand it over, we introduce you to an independent installer near you once you have ordered.
- First use
Connect the app and set a time
Join the cabin to your WiFi from the touchscreen, set the temperature and the session length, and give it about fifteen minutes. There are no stones to stack and no water to add.
What owning one actually involves.
The handful of things that decide whether this is still in use in year three.
Two quartz emitters give the full infrared range, the A, B and C bands, and six carbon panels around and under the bench fill in the sides. The air never gets as hot as a Finnish room does. Some people love that and some people miss the steam.
Holl's publish the supply as 220 to 240V, and the distributor confirms the Moon 2 is a plug in cabin. At about 10A it sits inside a 13A socket's rating. Plug it straight into the wall rather than an extension lead or adaptor.
No stones, no water, no filter, no chemistry. Wipe the bench and the glass down, leave the door open after use so the abachi dries, and that is the whole list.
A spare room, a bathroom with the space, a home gym or a garage that stays dry. It needs no plumbing, no drainage and no ventilation work. It is not built for outdoors.
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 55p
2,305W for 55 minutes is 2.1 kWh at 26.32p. That assumes every emitter runs flat out the whole time, which overstates the real figure once they start cycling.
about £86
156 sessions at 55p. For comparison, the same frequency in the 3.5kW Zen 2 traditional cabin comes to roughly £140, and in an 8kW outdoor barrel roughly £575.
none on a schedule
No stones, no filter, no pump and no chemistry. The emitters and carbon panels are the only consumable parts and they are not on a service interval.
Assumptions: electricity at the Ofgem price cap unit rate of 26.32p per kWh, 1 October to 31 December 2026, with no VAT on household electricity in that period. Figures are calculated from the rated total output of 2,305W published by Holl's, and assume the emitters run continuously, which overstates the real figure once they cycle at temperature.
What you have to do, and what the rules require.
Everything you have to do, and how often.
| Job | How often | Who |
|---|---|---|
| Check the socket before first use Total load is 2,305W, about 10A at 230V. The cabin is plug in, so it goes straight into an ordinary 13A wall socket, not an extension lead or adaptor. | Once, before first use | You |
| Wipe the bench and the glass A damp cloth and warm water. Nothing film forming on the abachi. | Monthly, or after heavy use | You |
| Leave the door open after use There is no steam, but there is perspiration. Airing it keeps the timber clean and dry. | Every session | You |
| Set a session length on the touchscreen The control has a timer built in. Use it rather than relying on remembering, especially if the cabin is started from a phone. | Once, then as you like | You |
Where this comes from.
Regulation and guidance, linked so you can read it yourself. None of it is our opinion.
- Moon 2 is Ø130 × 196cm, seats two, 2,305W from two quartz and six carbon emitters, abachi interior, 8mm toughened glass door, 220 to 240V supply, ten year wood and two year electrical warrantyHoll's Moon specification sheet, edition 02/2026
- Exterior in FSC certified hemlock; touchscreen control with WiFi; Bluetooth audio; ceiling ambient light and LED strip under the benchHoll's Moon specification sheet, edition 02/2026
- Electricity unit rate of 26.32p per kWh, 1 October to 31 December 2026Ofgem energy price cap
- Plugs and sockets in UK domestic installations are rated 13ABS 1363
Every figure the makers publish.
- Warranty
- 10 year wood, 2 year electrical warranty
- Lead time
- Estimated 7 to 10 working days from order. We confirm stock and your delivery date in writing when we process your order.
Figures are from Holl's own specification sheet for the Moon range, edition 02/2026, and the UK distributor's listing. Where a figure is ours rather than theirs, it says so.
What arrives, and what does not.
- The round cabin in hemlock, natural or black, with the abachi interior and the bench for two
- The curved 8mm toughened glass door with its full length handle
- Two quartz full spectrum emitters and six carbon panels, 2,305W in total
- The touchscreen control with WiFi, the Bluetooth speaker, the ceiling light and the colour strip under the bench
- The phone, drink, towel and magazine holders
- Ten years of Holl's warranty on the wood and two on the electrical components
- Assembly, unless you ask us to arrange it
- Delivery to the Scottish Highlands, islands and hard to reach addresses, which is quoted before dispatch
- An electrician, if there is no 13A socket within reach of where the cabin will stand
Reasons to buy something else.
This is not that and it never will be. If throwing water on hot stones is the point, buy a traditional cabin and be happier for it. The Zen 2 is the same price bracket and does exactly that.
Two seats on one bench. The Moon 4, at 1.8 metres across, is the answer for four, and we would rather sell you that than watch three people share this one.
The Moon is an indoor cabin. Hemlock and electronics in a British garden is not a plan, and nothing in the warranty would cover what happened next.
Infrared warms the body directly and the air around you stays far cooler than a Finnish room at 80 degrees. If walking into a wall of heat is what you are after, that is a traditional cabin's job.
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, construction and output
-
Verified
Diameter, height, seat count, timber species, glass thickness, emitter count and the 2,305W total are taken from Holl's own specification sheet for the Moon range, edition 02/2026, and match the UK distributor's listing.
- Current drawn
About 10A is our own arithmetic from the rated output at 230V.
- Plug in
Holl's state 220 to 240V and no more. The distributor confirms the Moon 2 is a plug in cabin. The Moon 4, at about 20A, is the one in the range that is hard wired.
- Warranty administration
Ten years on the wood and two on the electrical components are Holl's published terms. Claims run through the UK distributor, which raises them with Holl's where needed, and you deal only with us. The cabin is sold for home use: the distributor does not supply it for commercial use, and commercial or very frequent use can affect cover.
The three closest to it.
IndoorHarvia Onni Infrared Sauna: One or Two Person
From £3,995.00- One or two seats
- 1400W or 1800W
- plugs in
IndoorHoll's Canopée 2: 2 Person Infrared Sauna
£4,295.00- 2 people, 140 × 125 × 190cm
- Hemlock, slatted lining
- 2,150W quartz, magnesium and carbon
IndoorHoll's Moon 1: 1 Person Infrared Sauna
£3,195.00- 1 seat
- 102cm diameter × 196cm tall
- 1,970W full spectrum
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.