From ฿39,000 Free Delivery Built to order · 6–8 weeks
Diooist Sauna Heaters · Sauna Accessories

Commercial Wall Heater

The Commercial Electric Wall Sauna Heater delivers excellent performance, robust build quality, and efficient heat distribution in a compact wall-mounted design — ideal for both home saunas and commercial settings like spas, gyms, wellness studios, and boutique hotels. Designed for reliability and ease of installation, this wall sauna heater offers consistent heat output and premium steam production (löyly), all backed by TÜV-certified safety and durable construction.

From ฿39,000
Delivery time 3-5 weeks · deposit refundable up to 3 days*
Island delivery (e.g. Koh Samui, excl. Phuket) — ฿1,500 ferry surcharge added at checkout.

Configure your sauna

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Power 585 x 460 x 715 Included in base
Pick a power
Choose by sauna internal volume — see specs below
Heater Temperature Controls Not selected Optional
Heater Temperature Controls
Choose one

Add multiple products, then email yourself the full quote or checkout.

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Free consultation
Free delivery in Thailand
1–2 year warranty
After-sales support
Frequently Asked Questions
What size wall heater do I need?
Calculate your sauna’s internal volume (length × width × height in metres). Use the sizing guide above to choose the correct kW rating, adding ~20% for outdoor rooms or lots of glass.
Can a wall heater be installed in a home sauna?
Yes. This wall heater is perfect for residential environments and light commercial use, such as private gyms and wellness spaces.
Does it come with stones?
Yes. Each unit includes 18–22kg of premium sauna stones selected specifically for sauna heating.
Do I need an electrician?
Yes. Hard-wiring must be completed by a licensed electrician to meet Thai electrical standards.
Can this heater be used outdoors?
The heater must be installed inside the sauna room, protected from direct rain and humidity.
Is it suitable for heavy commercial use?
This model supports residential and light commercial spaces. For continuously operated high-traffic facilities, consider higher-duty commercial heaters.
What is the warranty?
Includes a 1-year manufacturer warranty covering material and workmanship defects.

Have more questions? Chat with us

About this heater

Overview
  • - Wall-mounted design ideal for limited floor space
  • - Durable stainless-steel finish — corrosion resistant
  • - Efficient stone tray layout for rich steam production
  • - TÜV safety certified for peace of mind
  • - Compatible with residential and light commercial use
  • - Premium stones included (18–22kg)
  • - Works on 240–380V — single-phase or three-phase
Delivery

### Installation

- Professional electrical installation required
- Heater must be hardwired to a dedicated circuit by a licensed electrician
- RonYen Sauna provides installation guidance but does not install standalone heaters
- Dedicated electrical circuit required (30–40A depending on heater size)
- Heat-resistant wiring rated for sauna conditions
- Minimum clearances from walls and ceiling as per the manual

### Delivery

- Free delivery throughout Thailand
- Standard delivery timeframe is 1–3 weeks from order confirmation
- Heater and stones ship in separate boxes (2 boxes total)

Warranty

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

Care & Maintenance

Pouring Water on Your Heater
Pour water slowly onto the stones using a ladle — avoid excessive water in one pour. Read our guide on how to pour water on sauna rocks without destroying your heater →

Replacement Heater Elements
Heating elements typically need replacement every few years depending on usage. Replacement elements available from RonYen Sauna.

Specifications

Dimensions
External410 × 270 × 520 mm
Wall thickness38mm
Performance
Temperature range60-105c
Heating time30-45 mins
Power & electrical
Power9 - 24kW
Voltage240V - 380V
Common questions

Everything you want to know about saunas & heaters

Outdoor and indoor cabins, barrels, cylinders and sauna + shower combos — 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 — the easiest way to make cold therapy a daily habit.

Our chillers take the water down to around 3°C and hold it there. Most people plunge between 3–10°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 — 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 — 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. 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 — 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 — a concrete pad, deck or paved area — 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 — 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 — rooftops, tight lanes or upper floors — 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 — 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 — 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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