Free Delivery · 1–2 Yr Warranty · After-sales Support
The Cylinder Heater is a floor-standing tower, 800mm tall and 380mm across, holding 50 to 80kg of sauna stones. Most wall heaters hold 18 to 22kg.
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That stone mass is the point of it. More stone means more stored heat,
so the room holds temperature more steadily through a session, and the
löyly is heavier when you ladle water over the top. The trade is at the
start: 30 to 45 minutes to come up to temperature, rather than warming
fast and then swinging.
The cylindrical body lets air move freely around the elements and the
stones, and the open steel cage makes the whole stack visible — it
reads as a centrepiece rather than a box on the wall.
Control is a wall-mounted panel with a digital LCD display, fitted
outside the sauna door, with Wi-Fi built in. The free iOS and Android
app turns the sauna on, sets the temperature and the timer, and shows
you what the room is doing from anywhere. The panel works on its own;
Wi-Fi adds the phone, and the panel keeps full control if the network
drops.
Stainless steel, silver finish. Eight outputs from 3 to 18kW. All
RonYen sauna heaters are TÜV Safety Certified.
Electric sauna heater unit (cylinder design)
Wall-mounted control panel with digital LCD display and Wi-Fi
Controller cable for routing through the wall
Mounting brackets and hardware
Installation manual (English)
Use the editor’s bulleted-list button for those five lines.
Note: Sauna stones are sold separately. This heater takes 50–80kg,
which is four boxes.
Heater Dimensions
Diameter: 380mm
Height: 800mm
Weight: 13kg (heater only, without stones)
Stone capacity: 50–80kg
Electrical
Outputs: 3 / 4.5 / 6 / 7.5 / 9 / 12 / 15 / 18kW
3 to 7.5kW: 230V single phase, or 400V three phase
9kW and above: 400V three phase only
Dedicated circuit with a correctly rated MCB
Hardwired installation, no plug
Approximate current draw
Calculated at the Thai design minimum — 220V single phase, 380V three
phase — so the real figure on a 230V or 400V supply is slightly lower.
Cable size, cable type and breaker rating must be set by your
electrician for the actual installation.
3kW — 14A single phase
4.5kW — 21A single phase
6kW — 28A single phase
7.5kW — 35A single phase
9kW — 14A three phase
12kW — 19A three phase
15kW — 23A three phase
18kW — 28A three phase
Control panel
Type: wall-mounted, fitted outside the sauna room
Display: digital LCD
Settable range: 40–110°C
Timer: up to 8 hours
Wi-Fi: 2.4GHz, built in
App: free, iOS and Android
Heater operating range: 60–105°C (most people run 80–90°C)
Heat-up time: 30–45 minutes to 80°C, depending on the room
Stone heating: direct contact, for steam on demand
Work out the interior volume of the sauna room — length × width ×
height. Then add 10 to 15 per cent for the Thai climate, and another
10 per cent if the sauna is outdoors or has a lot of glass.
3kW — 2 to 4 m³. For example 1.2m × 1.2m × 2.1m
4.5kW — 3 to 6 m³. For example 1.5m × 1.5m × 2.1m
6kW — 5 to 8 m³. For example 1.8m × 1.8m × 2.1m
7.5kW — 7 to 9 m³. For example 2.0m × 2.0m × 2.1m
9kW — 8 to 11 m³. For example 2.2m × 2.2m × 2.1m
12kW — 11 to 15 m³. For example 2.5m × 2.5m × 2.1m
15kW — 13 to 18 m³. For example 2.8m × 2.8m × 2.1m
18kW — 15 to 20 m³. For example 3.0m × 3.0m × 2.1m
Bold the output at the start of each line if you want them to stand
out, or leave them plain.
Undersize the heater and the room never quite gets there. Oversize it,
and it cycles on and off and wastes power. We confirm the output
against your room before you order.
### Installation
- Professional electrical installation required
- Heater must be hardwired to a dedicated circuit by a licensed electrician
- Floor-mounted design — requires adequate ceiling clearance (minimum 400mm above heater)
- External controller requires small hole through sauna wall for cable connection
- RonYen Sauna provides installation guidance but does not install standalone heaters
- We recommend hiring a local electrician familiar with high-amperage appliance installation
- Wi-Fi setup is simple — adapter plugs into controller and pairs with app in minutes
Installation typically requires:
- Dedicated electrical circuit (30–40A depending on heater size)
- Appropriate MCB/circuit breaker
- Heat-resistant wiring rated for sauna conditions
- Small wall penetration for controller cable
- Wi-Fi network with 2.4GHz support
- Adequate ceiling clearance (minimum 400mm above heater)
### Delivery
- Free delivery throughout Thailand
- Standard delivery timeframe is 2–4 weeks from order confirmation
- Heater, controller, and Wi-Fi adapter ship together
- Stones sold separately and ship in 4 boxes due to weight
If an electrical item stops working within the warranty period, we’ll send you a replacement free of charge.
Electronics: 1 year replacement warranty on electrical components
Warranty does not cover misuse, modifications, or normal wear and tear.
Regular Maintenance
- Inspect stones every 6–12 months and rotate or replace cracked stones
- Wipe down exterior with a damp cloth when cool
- Check controller display and connections periodically
Stones
- Use only sauna-grade stones rated for high heat
- Replace any stones that have cracked or deteriorated
- Arrange stones loosely to allow air circulation
Wi-Fi System
- Keep adapter firmware updated via the app when prompted
- Ensure stable 2.4GHz Wi-Fi signal reaches controller location
Professional Service
- Have a qualified electrician inspect connections annually
- Contact RonYen Sauna if you notice any unusual operation
For detailed care instructions, visit ronyen.com/support
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.
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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