Free Delivery · 1–2 Yr Warranty · After-sales Support
A solid pine soaking tub built the way barrels have been made for centuries. Individual staves cut to a taper, fitted edge to edge, and drawn together by steel hoops. There is no liner and no sealant holding the water in. The timber swells when it gets wet and the joints close on themselves.
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This bath holds about 880 litres. Outdoors, the 1.5HP chiller is the smallest that suits it. Contact us
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The pine is sustainably sourced and finished with an eco-friendly oil stain that is
skin-safe and free from harsh chemicals. Nothing synthetic touches the water. Just
timber, steel and whatever you fill it with.
The same construction as the 800, at nearly twice the diameter. At 1500 mm across
it seats three people around the edge, or gives one person room to stretch out
properly rather than folding. It holds around 880 litres, which is a serious volume
of water and close to a tonne once it is full.
At that size a chiller earns its keep. A tub this large takes a lot of ice to bring
down and a lot of ice to hold there, and a chiller with filtration will keep it
clear as well as cold.
Fill it hot for a traditional timber soak or cold for a plunge. Pine is stable
across the full range and does not mind being switched.
A centre-bottom floor drain takes a standard 40 mm waste fitting, so emptying is a
matter of pulling the plug rather than bailing. A slatted wooden step is included.
Bare timber asks for a slightly different routine to a plastic tub. Rinse it after
use, drain it fully rather than most of the way, and let it dry between sessions.
Re-oil it once or twice a year. If you are running it commercially, drain it every
night and treat the inside as a surface to be cleaned rather than water to be
dosed. The full routine, including what to use and what not to, is under Care &
Maintenance below.
Delivered to your door across Thailand. For island delivery a ferry surcharge
applies and is confirmed at checkout.
Inspect the tub on arrival before signing off the delivery. Any transit damage must
be noted on the delivery docket at the time of receipt.
No installation is required and no trade is needed on site.
The tub arrives assembled. There is no build.
Base
It needs a flat, level, load-bearing base. Concrete, tile, a paved terrace or a
properly framed timber deck all work. Level matters more than most people expect:
a tub sitting out of level fills unevenly and the waterline shows it.
Leave the tub clear of the ground where you can. A barrel sitting directly on damp
soil or on a surface that never dries will hold moisture against the base.
Weight when full
Around 880 litres of water, so roughly 880 kg, plus the tub and the people in it.
Close to a tonne. On a balcony, a roof, a timber deck or any suspended floor, get
the structure checked and signed off in writing before delivery.
Plumbing
There is no fixed plumbing. The tub has a drain fitting and, if you are running a
chiller, an inlet and an outlet.
Inlet and outlet are 1/2 inch. Our chillers use the same, so the hoses supplied
with the chiller connect straight to the tub with no adaptors.
Fill from a garden hose. Drain to a garden bed, a floor waste or a soakaway.
Position the tub so the drain runs away from the base rather than pooling under it.
Chiller placement
A chiller sits beside the tub, not underneath it. Allow around 500 mm clear behind
and to the sides for airflow, keep it out of direct afternoon sun where you can,
and give it its own dedicated power circuit. Full electrical requirements are on
the chiller's own page.
Access
Measure the route in, not just the space it is going. Gates, side passages,
stairs, lift doors and any corner tight enough to need the tub turned on its side.
Professional installation is available across Thailand as an optional add-on.
That is also why a barrel should not be left empty and dry for weeks at a time.
The staves shrink, the joints open, and it will weep for a day or two after
refilling until the timber takes up again. It is normal, and it stops.
Finished with an eco-friendly oil stain rather than a sealed coating, so the grain
stays open and the timber can move.
If an electrical item stops working within the warranty period, we’ll send you a replacement free of charge.
One-year warranty on the timber structure.
The warranty does not cover normal wear and tear, misuse, or modification. It also
does not cover seepage at the joins during the first fills, which is how a
stave-coopered tub is supposed to behave and is described under Assembly & Setup.
Chlorine damage is not covered. Chlorine breaks down the fibre of the wood and
should not be used in this tub.
After each use
- Rinse the interior with clean water.
- For a deeper clean, use a mild natural soap and a soft brush. Avoid harsh
chemical cleaners, which strip the oil finish and dry the timber out.
- Drain it fully rather than most of the way, and let it dry.
Oil finish maintenance
- Re-apply a food-safe or eco timber oil once or twice a year, or whenever the wood
starts to look dry.
- Do not apply varnish or polyurethane over the existing finish. They are
incompatible with an oil-stain base and will not bond.
Cold use
- Change the water regularly. A chiller with filtration will hold the temperature
and keep the water clear, but filtration removes particles rather than bacteria,
so it extends the interval between changes rather than replacing them.
- Cold water still grows things. It just does it more slowly.
Commercial and shared use
Run it as a single-bather plunge. One person at a time, then drain. The water is
not sanitised between users.
The timber is bare on the inside with an oil finish rather than a sealed surface,
so it cannot hold a chlorine residual the way a stainless bath can. Chlorine breaks
down the fibre of the wood itself and should not be used.
Nightly, for daily commercial use
- Drain fully. Not most of the way — standing water in the base is where things
grow.
- Rinse with clean water and clear out any debris.
- Wipe the interior with a soft cloth or brush and a mild natural soap, then rinse
again.
- Spray the interior with 3% hydrogen peroxide. Coat it, leave it ten minutes, and
do not rinse. It breaks down into water and oxygen and leaves nothing behind.
- Let it dry properly before the next fill.
Test the peroxide on a hidden patch low down at the back before you make it a
routine. Peroxide lightens timber, and on the darker stains you want to know what
it does before it does it across the whole tub.
Drying it out
Drying matters as much as anything else on this list. Mould and bacteria need
moisture, and a tub that dries between sessions does most of the work on its own.
Two people can tip it up. Stand it on its side against a wall, or turn it over and
prop one edge on a batten or a block so it sits at an angle. Do not lay it
face-down flat on the ground — that seals the opening and traps the damp
underneath, which is the opposite of what you are after. It needs a gap for air to
move through.
Leave the cover off while it dries.
Weekly
Give it a firmer wipe-down and check the joins and the base, where anything that is
going to establish will establish first. If the timber is looking dry, that is the
oil due.
Stock items can be returned within 7 days of delivery in resalable condition. Custom and made to order items cannot be returned once production has begun. Faulty goods are repaired, replaced or refunded at our cost.
Built to order
Every bath is made after the order is placed. Because nothing is built until you
order it, made-to-order baths cannot be returned or exchanged for change of mind.
Anything faulty is covered under warranty.
Deposit and balance
A deposit confirms the order and starts production. The balance falls due before
dispatch. Your quote states both figures.
Prices
Quoted prices hold for 30 days. They include 7% VAT and delivery within Thailand.
They exclude electrical work, structural certification, crane hire and any site
preparation.
Site readiness
The base, the access route and the power supply are the customer's responsibility
and need to be ready on the delivery date. Where a bath is going onto a roof, a
balcony, a deck or any suspended floor, written structural sign-off is required
before delivery.
Changes
Specification changes are possible before production starts. Once the build is
under way a change may not be possible, and where it is, it may carry a cost.
Colour and grain
Timber is a natural material. Colour, grain and figure vary between boards and
between baths, and timber left outdoors changes colour over time. Photographs are
representative rather than exact.
Outdoor and indoor cabins, barrels, cylinders, cube and modern designs, plus sauna-and-shower combos — from a compact one-person unit up to fourteen-person commercial rooms. Every model is made to order and customisable to your space. Browse saunas.
Red Cedar and Finnish Thermo Pine both handle heat and humidity beautifully — cedar for its aroma and natural rot resistance, thermo pine for its stability in wet conditions. Japanese Hinoki is our premium pick. Canadian Hemlock is excellent value for indoor cabins. We’ll match the timber to your budget, look and location.
Outdoor saunas are fully weather-sealed for gardens, rooftops and pool decks. Indoor models are built for bathrooms, gyms and spare rooms. Both use the same indoor-rated electric stone heaters — the difference is the exterior cladding and weatherproofing.
It depends on the internal volume of the cabin. As a guide: 4.5kW for 3–6 m³, 6kW for 5–8 m³, 9kW for 8–11 m³, 12kW for 11–15 m³, 15kW for 13–18 m³ and 18kW for 15–20 m³. Above 20 m³ takes two heaters. Up to and including 9kW runs on single phase; above that is three phase only, which in practice means anything from a six-person cabin upwards. We confirm the exact requirement in your quote so your electrician knows precisely what to install.
Both are food-grade and corrosion-resistant. 316 adds extra protection for coastal air and chlorinated water, so it’s the safer choice near the sea or beside a pool. 304 is excellent value everywhere else. We’ll recommend the right grade for your site. See ice baths.
Ice works to get started, but it melts fast in Thailand and gets expensive. A chiller holds a precise temperature day after day with no effort — it’s the easiest way to make cold therapy a daily habit rather than an occasional event.
Our chillers run from 0°C to 42°C, so the same unit chills in the hot season and heats in the cool one. Most people plunge between 3°C and 10°C. Beginners usually start around 12–15°C and work down over a few weeks.
Our chillers include filtration and ozone sanitation that keep the water fresh for weeks between changes: run the ozone for 30–60 minutes after each session with the lid on, and the hydrogen peroxide in the cleaning kit keeps the water clean in between (about 160 ml on a fresh 320 L fill, then ~50 ml a week, checked with a test strip). Both are safe on stainless, acrylic and PVC baths. We walk you through it at handover — it’s far less work than a pool.
Yes. Our brochures are on the site as downloads and we can email them to you. Because every sauna is made to order, the catalogue shows configurations and starting prices rather than a fixed range. Download the brochures.
The room dimensions, whether it is indoor or outdoor, how many people, and roughly where you are. If you have a floor plan, send that. From those four things we can quote accurately.
Yes, three ways. Come to the wellness garden and showroom in Ban Suan, Chonburi, ten minutes from Central Chonburi — there is a working sauna and ice baths you can use, by appointment. We hold finished samples of all four timbers. Or we will bring the samples to you: we travel anywhere in Thailand for a fee, and that fee comes off the price of your order when you buy. Book a consultation.
Yes. RonYen Wellness Co., Ltd is VAT registered and can issue full tax invoices. Ask us for the registration document if your accounts department needs it for approval.
Yes. We deliver to Koh Samui, Koh Phangan, Koh Tao, Koh Kood and Phuket regularly. Island delivery carries a supplement over mainland freight, quoted per job, and adds a few days. Tell us the island and we will price it with the quote rather than after.
We service Thailand and Laos. We are not set up for shipping further afield at the moment.
Mainland delivery is included in the price. Islands and remote provinces carry a supplement, quoted with your order.
Yes — we deliver right across Thailand by freight. Wherever you are, we’ll get it to you. Delivery details.
Occasionally, depending on the unit and where it is. Send us photographs of the heater, the control gear and the cabin and we will tell you honestly whether it is worth us coming or whether a local electrician can sort it for less.
Heater elements, stones, control panels and thermostats for the heaters we supply, held in Thailand. If you have another brand, tell us the model and we will say whether we can help.
Not currently.
Yes, for saunas in commercial operation. A room running twelve hours a day carries four to six times the load of a home installation, and scheduled servicing is what keeps it performing and keeps the warranty intact. Commercial servicing.
Yes — every sauna arrives in a sealed timber crate with the wall sections already built, and most assemble in a day with two or three people and the supplied instructions. No specialist tools needed. Prefer it done for you? Our team can handle the full install. Installation service.
Delivery to the spot, full assembly, levelling, fitting the heater, and a handover walkthrough so it’s ready to use the same day. It’s the easy option if you’d rather not build it yourself.
A firm, level base — a concrete pad, deck or paved area — plus a power point within reach for the heater. We send a simple prep checklist before delivery so everything’s ready when your sauna arrives.
The final hard-wire connection of the heater should be made by a licensed electrician — that part isn’t included, for safety and compliance. We supply the full heater specification and can recommend trusted local contractors.
Reserve online in a couple of minutes — pick a plan, a date and a time slot, and choose to pay online or on arrival. You’ll get a confirmation by email and text.
The Garden runs on advance bookings so every session has the space to itself — so book ahead if you can. That said, if you're passing and spot us, scan the sign at the gate or give us a call, and if there's room in the current session we'll happily wave you in.
Saunas, ice baths, a swimming pool and shaded lounge areas — everything you need for the full hot-and-cold circuit, in a quiet private garden. A towel, flip-flops, a locker and your first drink come free with every visit. Explore the garden.
It’s in Chonburi, easily reached from Bangkok and Pattaya. We’re in a private gated community — when you arrive, look for the RonYen sign at the gate and we’ll open it for you. We text a reminder before your session so we’re ready and waiting.
Get a straight answer on what suits your space, budget and the Thai climate — free and with no pressure.
Book a free consultation
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A sauna or ice bath is a long-term addition to your home or commercial space. Tell us about your project, your goals and your timeline — we’ll give you a straight answer, including what the right options are.
Free consultation. Phone call, video call, or visit our showroom in Ban Suan, Chonburi — Rön Yen Shop & Wellness Garden — by appointment. Tell us your space and budget, and we’ll talk through the options with no pressure to buy.
Ban Suan, Chonburi — 10 minutes from Central Chonburi
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