From ฿51,490 Free Delivery 2-4 weeks from deposit
Harvia Sauna Heaters · Sauna Heaters

Harvia PRO Commercial Sauna Heater

The Vega Pro is a floor-mounted, traditional, TÜV Safety Certified, stone heater built for large commercial sauna rooms. Its stainless steel housing is designed for professional environments — gyms, hotels, spas, and public bathing facilities — where high output and reliable continuous operation are required.

฿54,200 From ฿51,490 Save 5% ฿2,710 Includes 7% VAT
2-4 weeks from deposit

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Power 10.5kW Three phase only · 400 V
Pick a power
Choose by sauna internal volume — see specs below
Colour Stainless Steel
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Finish only — doesn’t change the price
Stainless Steel
Quantity
Free consultation
Free delivery in Thailand 2-4 weeks from deposit
1–2 year warranty
After-sales support
Frequently Asked Questions
Does this heater include a control panel or controller?
No. All Vega Pro models require a separately purchased external control unit. The heater has no integrated controls — you must order a compatible controller and mount it outside the sauna room.
What power supply does the Vega Pro require?
All three models run on 400 V three-phase (3N~). This is a commercial-grade electrical supply; a licensed electrician must carry out the connection. It is not compatible with standard single-phase household circuits.
Which model suits my sauna room size?
The 10.5 kW suits rooms of 9–15 m³, the 13.5 kW covers 11–20 m³, and the 16.5 kW is rated for 16–30 m³. If your room is heavily tiled or poorly insulated, size up.
How much stone does the heater hold, and what size stones do I need?
All models hold 40 kg of sauna stones. Stones should be ø 5–10 cm — stones supplied with the unit meet this specification. Avoid smaller stones, which can fall through the basket and damage elements.
What are the minimum safety clearances I need to allow during installation?
Clearances vary slightly by model. For the 10.5 kW: 50 mm front (A), 150 mm side (B), 50 mm ceiling (C), 1250 mm floor-to-obstruction (D), 50 mm rear (E). The 13.5 kW and 16.5 kW require 80–100 mm on A, B and C sides, and 1450 mm for D. Refer to the installation diagram for your specific model.

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Download the Harvia PRO Commercial Sauna Heater brochure

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About this heater

Overview

Three power outputs cover rooms from 9 m³ up to 30 m³, and the heater accepts 40 kg of sauna stones (ø 5–10 cm) for dense, sustained steam production. All models operate on 400 V / three-phase supply and require a separately purchased external control unit — no integrated controller is included.

The compact footprint (435 × 470 mm base, 640 mm tall) makes installation practical in both corner and wall-adjacent positions, with defined safety clearances that are easy to meet in a well-planned room. Adjustable floor-mounted feet allow levelling on uneven surfaces.

  • Three power outputs (10.5, 13.5, 16.5 kW) suit rooms from 9 m³ to 30 m³
  • Traditional, TÜV Safety Certified, stone heater built for commercial and professional sauna use
  • Holds 40 kg of sauna stones (ø 5–10 cm) for consistent, dense steam
  • Stainless steel housing — corrosion-resistant and easy to wipe down
  • Floor-mounted installation with adjustable levelling feet
  • 400 V / three-phase power — suited to commercial electrical infrastructure
  • Requires a separately purchased external control unit (not included)
  • Compact 435 × 470 mm base fits tight wall and corner positions
  • Clear minimum safety clearances defined for all sides and ceiling
What’s included
  • Lava/Sauna Stones
Delivery

Lead time is subject to stock availability — confirm at time of order. The heater ships freight and is delivered to kerbside or building entrance; placement inside the sauna room is not included. The unit is heavy (approx. 40 kg stone load separate) — arrange adequate labour for unloading and positioning. Ensure clear vehicle access to the delivery address. Packaging should be inspected for transit damage before the driver leaves.

Installation

The Vega Pro is a floor-standing unit that installs directly on the sauna room floor. Adjustable feet allow levelling on slightly uneven surfaces. Position the heater so that all minimum safety clearances are observed: refer to the dimensional diagram for clearances A (front/side), B (side wall), C (ceiling), D (floor to ceiling above unit), and E (rear).

All models run on 400 V three-phase (3N~) power. Cable sizing and breaker ratings vary by model — 5 × 2.5 mm² / 3 × 16 A for the 10.5 kW, 5 × 4.0 mm² / 3 × 20 A for the 13.5 kW, and 5 × 6.0 mm² / 3 × 25 A for the 16.5 kW. A licensed electrician must carry out all wiring.

An external control unit is required and must be purchased separately. The control unit is mounted outside the sauna room; follow the control unit manufacturer's installation guide for cable routing through the wall. Load the 40 kg of sauna stones (ø 5–10 cm) only after electrical installation is complete and before the first heat-up.

Warranty

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

Unit carries the manufacturer's standard warranty against defects in materials and workmanship. Verify specific duration and terms with the supplier at time of purchase, as commercial-use warranty periods may differ from residential.

Care & Maintenance

Stones
- Inspect sauna stones every 1–2 months. Remove, rinse, and discard any that have cracked or crumbled, as broken stones restrict airflow and can overheat the element.
- Replace the full stone load every 1–2 years under regular commercial use.

Housing
- Wipe the stainless steel exterior with a damp cloth after the room has cooled. Avoid abrasive pads or chlorine-based cleaners, which can pit the surface.
- Keep the ventilation slots clear of lint, dirt, and moisture build-up.

General
- Do not pour excessive water directly onto the heating element; ladle water onto the stones only.
- Allow the heater to cool fully before performing any cleaning or stone maintenance.
- Have a licensed electrician inspect wiring connections annually in high-use commercial settings.

Returns & Refunds

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.

Read the full Returns Policy

Specifications

Dimensions
External47 × 43.5 × 64 cm
Capacity & weight
Weight40 kg
Power & electrical
Power10.5 / 13.5 / 16.5 kW (see variations)
PhaseThree-Phase (3N~)
Voltage400 V
Common questions

Everything you want to know about saunas & heaters

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.

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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.

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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.

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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.

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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.

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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.

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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.

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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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