Free Delivery · 1–2 Yr Warranty · After-sales Support
Experience the ultimate in recovery for multiple people. Enjoy relaxation and hydrotherapy with this premium Cold or Hot Plunge Pool, designed for professional wellness spaces, gyms, spas, and high-end home installations. Built from durable stainless steel and engineered for performance, this plunge pool provides a spacious environment for full-body immersion while maintaining precise temperature control. With its generous dimensions and integrated system housing, this plunge pool delivers a powerful combination of cold therapy, heat therapy, and hydro-massage to help improve circulation, accelerate muscle recovery, and support overall wellness. The modern stainless steel design offers both durability and a sleek aesthetic that fits seamlessly into luxury wellness environments. The large bathing area comfortably accommodates multiple users or provides ample space for deep immersion therapy, making it ideal for athletic recovery, spa treatments, or contrast therapy routines.
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#### Delivery
Free delivery anywhere in Thailand.
#### Installation
1. Position the unit on a flat, level surface near a power outlet
2. Ensure adequate ventilation around the unit for heat dissipation
3. Fill with clean water to the indicated line
4. Plug into a grounded 220V outlet
5. Power on and set the target temperature via the control panel or app
6. Allow 12-24 hours for initial cool-down to the target temperature
7. Fit an insulated cover when not in use
Note: Unit requires approximately 50cm clearance on all sides for airflow. Indoor installation is recommended for optimal performance and longevity.
The unit arrives assembled with both circuits built in.
Base
A flat, level, load-bearing base, sized for the full footprint. A duo unit is
substantially larger than a single bath and holds two bodies of water, so the
loaded weight is the figure that matters. Check the capacity in the specifications,
add both volumes, and treat the total as your load.
On any suspended floor, roof or balcony, get the structure checked and signed off
in writing before delivery. A duo unit full of water is frequently over a tonne.
Electrical
Two temperature systems means a heavier electrical requirement than a single bath.
Supply 220-240 V single phase, 50 Hz
Breaker Type C MCB, sized to the unit
Protection Individual 30 mA RCBO
Confirm the current draw for your specific configuration with us before your
electrician runs the circuit. A duo unit is not a bath you can put on a spare
socket circuit.
Terminate in a weatherproof, IP-rated outlet or enclosure with an isolating switch
within sight. Licensed Thai electrician, not included, tested before delivery.
Plumbing
No fixed plumbing. Drain fittings on both sides for emptying. Fill from a garden
hose.
Access
Measure the route carefully. A duo unit is the largest thing in the ice bath range
and it does not come apart.
Professional installation is available across Thailand as an optional add-on.
If an electrical item stops working within the warranty period, we’ll send you a replacement free of charge.
Electrical Components: 1 year coverage. Replacement unit delivered to your location.
Structural: 1 year coverage.
(Coverage excludes normal wear, unauthorised modifications, or accidental damage.)
## Ice Bath Care & Maintenance
Your RonYen ice bath is built to last with minimal upkeep. A simple routine keeps the water fresh, the equipment running efficiently, and your cold plunge experience at its best. Whether you're using an integrated chiller system or adding ice manually, these steps will help you get the most out of your investment.
The key to low-maintenance ownership is consistency. A few minutes after each session and a short weekly check prevents the kind of buildup that leads to bigger jobs down the track.
### After Every Session
- Shower before entering. Body oils, sunscreen, sweat, and lotions are the number one cause of cloudy water and filter clogging. A quick rinse before you plunge makes a significant difference to water quality.
- Replace the insulated lid immediately. This maintains water temperature, reduces energy consumption on chiller units, and keeps debris, insects, and leaves out of the water.
- Wipe down the rim and any exposed surfaces with a clean cloth to prevent waterline buildup.
- Remove any visible debris from the water with a small skimmer net.
### Weekly Routine
- Check water clarity and smell. Clean water should be clear with no odour. If cloudy or smelly, change the water regardless of when you last filled it.
- Clean or rinse the filter element (chiller models). Remove the cartridge and rinse under running water — takes under two minutes and keeps circulation at full flow.
- Wipe the waterline around the interior with a soft cloth or non-abrasive sponge. Mild dish soap or diluted white vinegar is all you need.
- Test water quality if you're using sanitising tablets or water treatment products. Simple test strips from pool supply shops give a quick read on pH and sanitiser levels.
### Fortnightly (Chiller Models)
- Check the ozone generator is functioning. Most units have an indicator light — if it's off or flashing, consult your user manual or contact us.
- Inspect hose connections between the chiller and tub for leaks or loosening. Tighten fittings by hand — don't overtighten.
- Clean the chiller's air intake and exhaust vents. Dust and insects accumulate quickly in Thailand's climate. Wipe or vacuum the vents to maintain airflow and cooling efficiency.
### Monthly Routine
- Deep clean the interior. Drain completely, wipe all interior surfaces with a mild cleaning solution, and rinse thoroughly before refilling. For stainless steel, use a dedicated stainless steel cleaner. For composite or timber, use only approved products for that material.
- Replace the filter cartridge if showing wear, discolouration, or reduced flow even after rinsing. Most filters last 2–3 months depending on usage.
- Inspect the drain valve and plug for signs of wear or slow leaking. Replace seals if needed.
- Timber exteriors: Check for cracking, splitting, or discolouration. Apply recommended timber treatment oil if the wood appears dry. Thailand's UV and humidity accelerate timber aging.
### Water Change Schedule
- With chiller, ozone, and filtration: Change every 2–4 weeks depending on usage. Heavy daily use or multiple users requires more frequent changes.
- Without a chiller (manual ice): Change after every session, or at minimum every 2–3 days. Standing water without sanitation becomes a breeding ground for bacteria in Thailand's warm climate.
- Always use clean tap water. If your supply has high mineral content, consider a basic inline filter on your garden hose to reduce calcium buildup.
### Seasonal Tips for Thailand
- Hot season (March–May): Expect longer cooling times and higher energy use. Ensure good ventilation around the chiller and keep it out of direct sunlight.
- Rainy season: Outdoor tubs need more frequent cleaning. Check for debris buildup and ensure the area around the base has adequate drainage.
### What to Avoid
- No bleach, pool chlorine, or harsh chemicals. These damage interior surfaces, seals, and chiller components. Use products designed for small cold plunge systems, or ask us for recommendations.
- Never leave the tub uncovered. Uncovered water in Thailand attracts mosquitoes and debris rapidly.
- Don't run the chiller without adequate water level. The pump must be fully submerged. Running dry damages the pump and voids your warranty.
- Don't pressure wash timber exteriors. High pressure forces water into the grain and causes splitting. A gentle hose and wipe is sufficient.
### Chiller Maintenance
- Keep the unit on a level, stable surface with at least 30cm clearance on all sides for airflow.
- Visually check refrigerant lines for damage or wear. Do not attempt refrigerant repairs yourself — contact us or a qualified technician.
- The compressor and fan are sealed units requiring no user maintenance. If you hear unusual noises, frequent cycling, or the unit isn't reaching target temperature, contact support.
- Clean the condenser coils every 3–6 months by gently brushing off dust and debris. This is the single most impactful task for chiller longevity and efficiency.
### When to Contact Us
- Water not reaching target temperature despite clean filters and vents
- Unusual noises from the chiller or pump
- Error codes on the digital controller
- Ozone generator not activating
- Any leaks from the tub, fittings, or chiller unit
- Visible damage to the interior surface
- Questions about replacement parts or filter cartridges
### Warranty Reminder
Regular maintenance as outlined above is a condition of your warranty. Keep a simple log of water changes and filter replacements — this protects you in the unlikely event of a warranty claim and helps us diagnose issues faster.
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. We walk you through simple water care 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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