From ฿481,167 Free Delivery Built to order Β· 6–8 weeks
All Custom Saunas Β· Outdoor Saunas

Custom Outdoor Sauna β€” 12 Person

The RonYen Custom Outdoor Sauna seats 12 people across a U-shaped, two-tier bench layout inside a Thermo Pine cabin measuring 4924 Γ— 2524 Γ— 2060mm internally. It ships flat-packed for self-assembly, is made to order, and is available in three timber options to suit your space. A galvanised metal roof with a 4-degree front-to-back pitch keeps water moving and the structure sound in the Thai climate.

From ฿481,167
Built to order Β· 6–9 weeks from deposit Β· deposit refundable up to 14 days*
Island delivery (e.g. Koh Samui, excl. Phuket) β€” ΰΈΏ1,500 ferry surcharge added at checkout.

Configure your sauna

price updates live

Timber Thermo Pine 3 options available
Pick a timber
Premium timbers carry an upgrade cost
Thermo Pine
Included
Japanese Cedar
+฿33,973
Red Cedar
+฿191,100
Heater Cylinder Heater 18kW Β· +฿48,000
Pick a heater
Larger cabins benefit from higher-kW heaters
Black Nest Heater
3kW Β· +฿45,500
Needs 18 kW+
Commercial Sauna Heater
18kW Β· +฿41,000
Commercial Wall Heater
18kW Β· +฿49,000
Harvia Standard Sauna Heater
4.5kW Β· +฿36,999
Needs 18 kW+
Harvia VEGA Sauna Heater
4.5kW Β· +฿36,999
Needs 18 kW+
Premium Commercial Heater
18kW Β· +฿69,000
Prism Heater
3kW Β· +฿48,500
Needs 18 kW+
Silver Nest Heater
6 kW Β· +฿43,000
Needs 18 kW+
Standard Heater
3kW Β· +฿30,000
Needs 18 kW+
Γ—
No heater
Sauna shell only
Front Porch/Deck No Included
Front Porch/Deck
Choose one Β· required
Backside (Wood/Glass) Timber Back Wall Included
Backside (Wood/Glass)
Choose one Β· required
Glass Side Walls Not selected Pick one or more
Glass Side Walls
Multi-select β€” pick any combination

Pick more than one if needed β€” combinations are common. Tap a pill to toggle it.

Door Position Not selected Optional
Door Position
Choose one
Bench Configuration Not selected Optional
Bench Configuration
Choose one
Installation Not selected Optional
Installation
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Add multiple products, then email yourself the full quote or checkout.

View Quote
Free consultation
Free delivery in Thailand
1–2 year warranty
After-sales support
Frequently Asked Questions
What size heater do I need for this sauna?
RonYen recommends an 18 kW heater for this model. The internal volume of the cabin is sized around that output, so going significantly under that rating will make it harder to reach and hold temperature.
What are the electrical requirements for a sauna this size?
An 18 kW heater at standard 380V three-phase draws roughly 27–28 A per phase. You will need a dedicated three-phase circuit with appropriate breaker sizing installed by a licensed electrician before the heater is connected. Confirm exact cable and breaker specs with your electrician once you have selected your heater unit.
Will this sauna comfortably fit 12 people?
Yes. The U-shaped two-tier bench layout across the 4924 Γ— 2524mm internal floor area is designed for 12 people. Upper benches run hotter, so users can choose their preferred intensity without crowding.
How does assembly work, and where can the sauna be placed?
The sauna arrives flat-packed and is designed for self-assembly. It is built for outdoor placement and requires a flat, level base β€” a concrete slab is the most common option. The external footprint is 5000 Γ— 2600mm, so factor in additional clearance around the unit when planning the site.
Can I pair this sauna with a RonYen ice bath?
Yes. RonYen makes ice baths as separate made-to-order units that can be positioned alongside this sauna. Contact RonYen directly to discuss sizing and layout options that suit your space.

Have more questions? Chat with us

About this sauna

Overview
  • Seats 12 people with a U-shaped, two-tier bench layout across an internal space of 4924 Γ— 2524 Γ— 2060mm
  • External footprint of 5000 Γ— 2600 Γ— 2300mm, designed for outdoor installation
  • Standard build in Thermo Pine, heat-treated for stability and moisture resistance and well-suited to the Thai climate, with Japanese Cedar and Red Cedar available as alternatives
  • Galvanised metal roof with a 4-degree front-to-back pitch for effective water runoff
  • Built-in ventilation system for consistent airflow throughout the cabin
  • Recommended heater size of 18 kW to match the internal volume
  • Flat-packed and designed for self-assembly
  • Made to order β€” customisable to your requirements
What’s included
  • 8mm Tempered Glass Door
  • All Required Fasteners & Fittings
  • Complete Assembly Instructions
  • Floor Platform Sections
  • Heater Guard for Safety
  • Installation Manual (English)
  • Interior Bench Seating
  • Lava/Sauna Stones
  • Pre-assembled Wall Sections
  • Stainless Steel Hardware
  • Wall Ventilation Components
  • Waterproof Roof Shingles
  • Wooden Door Handle & Frame

Free cleaning kit, included in every box:

  • Sauna Wood Cleaner 500ml (pH neutral)
  • Soft Bristle Scrubbing Brush
  • Timber Treatment Oil 250ml
  • Eucalyptus Löyly Oil 100ml
Delivery

Delivered throughout Thailand and shipped internationally. Build time is confirmed with your quote β€” made-to-order products are typically 6–9 weeks for saunas and 4–7 weeks for ice baths, plus delivery.

Installation

The sauna arrives flat-packed for self-assembly. Two people with basic tools can put it together in 1–2 days using the supplied manual and video guides. We’re always on hand by chat, phone or video call if you need help.

Prefer not to do it yourself? Professional installation is available across Thailand β€” quoted separately when you order. Heater wiring must always be completed by a licensed electrician; we supply full electrical specifications and wiring diagrams with every order.

Timber options
Thermo Pine

Heat-treated for stability and moisture resistance. Suited to the Thai climate.

Japanese Cedar

Sugi cedar: warm golden tone, naturally aromatic, lighter than western cedars.

Red Cedar

Western red cedar: the benchmark sauna timber. Rich reddish tone, deeply aromatic.

Warranty

If an electrical item stops working within the warranty period, we’ll send you a replacement free of charge.

Specifications

Dimensions
External5000 Γ— 2600 Γ— 2300mm
Internal4924 Γ— 2524 Γ— 2060mm
Wall thickness38mm
Capacity & weight
Capacity12 People
Power & electrical
Power3kW
Voltage380V
Common questions

Everything you want to know about saunas & heaters

Outdoor and indoor cabins, barrels, cylinders and sauna + shower combos β€” from a compact one-person unit up to ten-person commercial rooms, all customisable to your space. Browse saunas.

Western Red Cedar and Finnish Thermo Pine both handle heat and humidity beautifully; Hinoki is our premium pick. We’ll match the timber to your budget 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 indoor-rated electric heaters.

Most home saunas run on a dedicated single- or three-phase circuit sized to the heater. We’ll confirm the exact electrical requirement in your quote.

Both are food-grade and corrosion-resistant; 316 adds extra protection for coastal and chlorinated environments. We recommend the right grade for your site. See ice baths.

Ice works to get started, but a chiller holds a precise temperature day after day with no effort β€” the easiest way to make cold therapy a daily habit.

Our chillers take the water down to around 3Β°C and hold it there. Most people plunge between 3–10Β°C depending on experience.

A built-in filtration and sanitation cycle keeps the water fresh for weeks. We’ll walk you through simple water care at handover.

We soft-open on 30 July 2026 in Chonburi (with Founding Member pricing) and fully open on 4 September β€” and booking is open now, so you can reserve a session ahead. Book a visit.

The Garden runs on advance bookings so every session has the space to itself β€” 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 β€” everything you need for the full hot-and-cold circuit. Explore the garden.

The Wellness Garden is in Chonburi, easily reached from Bangkok and Pattaya. Full directions and parking details are on the garden page.

Yes β€” most saunas assemble in a day with two or three people and clear instructions. Prefer it done for you? Our team can handle the full install. Installation service.

Delivery to the spot, full assembly, levelling, heater fitting and a handover walkthrough so it’s ready to use the same day.

A firm, level base β€” a concrete pad, deck or paved area β€” plus a nearby power point. We’ll send a simple prep checklist before delivery.

Final connection should be made by a licensed electrician. We provide the full specification and can recommend trusted local contractors.

Yes β€” we deliver right across Thailand by freight, and ship internationally on request. Delivery details.

Most saunas are ready six to eight weeks from order. Once built, freight to your address typically takes a few days, with tracking provided.

Standard nationwide delivery is included. For tricky access β€” rooftops, tight lanes or upper floors β€” we’ll quote any crane or extra handling up front.

Everything ships in a purpose-built timber crate to protect the timber and glass in transit β€” and the crate is easy to dispose of or repurpose.

Still deciding? Talk to a specialist.

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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Talk to us before
you buy.

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 β€” RΓΆn 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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