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Commercial Saunas for Gyms, Hotels and Resorts in Thailand
The sauna in a private garden is used four or five times a week by the same two…
27 Aug 2026
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Commercial sauna servicing
A commercial sauna ages four to six times faster than a home one
A home sauna runs for two hours and dries out for twenty. A commercial room goes from ambient to ninety degrees and back every day, and rarely gets a proper drying window. Scheduled servicing is what keeps a room performing at year eight the way it did at year one.
The numbers that matter
What servicing buys you
Two figures. A well-maintained commercial room reaches 12 to 15 years in Red Cedar and 8 to 10 years in Thermo Pine. Without servicing, expect materially less.
12–15 years
Service life of a maintained Red Cedar commercial room
1 year
How long heater stones last under commercial load before they crack and collapse
4–6 years
Commercial heater element life. Not the ten years a home installation gets
What fails first
Four things wear out, and they are predictable
None of this is a fault. It is the normal consequence of running a sauna as a business. Knowing the order things fail in is what turns a breakdown into a scheduled visit.
01
Heater stones
Under commercial load stones crack and collapse within a year. Collapsed stones restrict airflow, which overheats the elements. The cheapest thing on this list to stay ahead of, and the one that takes the most out with it when ignored.
02
Fasteners
Constant thermal movement plus coastal air. Fixings work loose and corrode. We specify 316 stainless throughout and check it every visit.
03
Bench surfaces
Sweat, salt and body oil, plus constant loading. Bench tops are a consumable, so we build them as removable sections. A set can be replaced in an afternoon rather than rebuilding the bench.
04
Heater elements
A four to six year item under commercial duty. We log run hours at every visit, so replacement is a line in next year’s budget rather than a closed room on a Saturday.
Packages
Three agreements, priced per room
All fees are per sauna room, per year, excluding VAT. Consumables are invoiced as they are used.
Commercial
฿48,000 a year
For venues operating daily.
- One annual service and three quarterly services
- Written condition report after every visit
- Travel included across Chonburi, Pattaya, Sriracha, Rayong, Bangkok, Samut Prakan and Nonthaburi
Most popular
Commercial Plus
฿72,000 a year
For multi-room venues where downtime carries a real cost.
- Everything in Commercial
- Priority callout within 48 hours
- 15% discount on parts
- One heater element included each year
Island
Phuket฿95,000
Samui฿105,000
Phangan฿125,000
For venues on Phuket, Samui and Phangan, where every visit is a two to three day trip.
- One annual service and one mid-year service
- Priority remote support
- All flights, ferries, accommodation and local transfers included
- Heavier stone sets specified to suit the longer interval
Year one is included at no charge on the Commercial package with every RonYen commercial equipment installation. Renew at the standard rate, or upgrade to Commercial Plus at any point.
Non-contract callout: ฿6,500, covering attendance and the first hour of diagnostic work. Parts and further labour billed separately.
What happens on a visit
Scope of work
Two blocks of work. The quarterly visit keeps the room safe and running. The annual visit is where the room gets put back to standard.
Approximately two hours, one technician
Heater and stones
Lift and inspect the full stone set, remove cracked and crumbled stones, re-stack for correct airflow around the elements, visual check of elements for scaling and deformation, record heater run hours.
Structure
Spot-check fixings for movement and corrosion, check bench slat fixings and sand any raised grain or splinters, inspect wall and ceiling lining for cupping or discolouration.
Ventilation and controls
Clear air inlet and extract, verify extract flow, verify sensor calibration against a reference thermometer.
Door and glass
Hinge alignment and seal contact, handle and patch fitting torque.
Reporting
Written condition note with photographs.
Half to full day, two technicians. Everything in the quarterly service, plus:
Timber
Full heater stone replacement. Bench tops removed, cleaned back and treated with sauna-grade paraffin oil. External face cleaned and re-oiled. Any bench slat past economic repair replaced.
Electrical
Contactor boxes opened, terminals checked for heat discolouration and re-torqued. Element resistance tested against specification and the wear trend logged. Over-temperature cut-out tested and reset verified. Insulation resistance test on heater circuits. Light fittings checked and drivers confirmed clear of the hot room.
Structure and moisture
Ventilated gap behind the cabin checked for blockage and standing water. Underside and base inspected, particularly on rooftop installations. Walls adjacent to air-conditioned spaces checked for condensation.
Reporting
Full written condition report with photographs, consumables used and parts replaced, items flagged for the next visit, and a remaining service life estimate on heaters and bench timber.
Consumables and travel
What is not in the fee
Consumables are invoiced as they are used, so you only pay for what the room actually consumes.
| Item | Unit | Price |
|---|---|---|
| Sauna stones | 25 kg box | ฿2,000 |
| Paraffin bench oil | per litre | Quoted |
| Bench slats | per section | Quoted |
| 316 stainless fixings | as required | Quoted |
| Heater elements | per element | Quoted |
Stone quantity depends on the heater. As a guide, a room with two 15 kW heaters consumes 60 to 100 kg a year, or ฿4,800 to ฿8,000. Bench slat replacement usually begins around year three or four. Heater elements are typically replaced between years four and six.
| Zone | Area | Charge |
|---|---|---|
| Zone 1 | Chonburi, Pattaya, Sriracha, Rayong | Included |
| Zone 2 | Bangkok, Samut Prakan, Nonthaburi | Included |
| Zone 3 | Within 300 km — Hua Hin, Khao Yai, Kanchanaburi | ฿4,500 per visit |
| Zone 4 | Beyond 300 km — Chiang Mai, Isaan | ฿4,500 per technician per day, plus travel and accommodation at cost |
| Zone 5 | Phuket, Samui, Phangan | Included in the Island package |
Warranty
Servicing is what keeps the warranty intact
RonYen equipment carries two years on structure, one year on electrical components by replacement, and one year on glass and hardware.
On commercial installations, that cover applies where the service schedule has been maintained and the daily and weekly care routine followed.
This is not a technicality. A room running twelve hours a day without stone replacement, without drying overnight and without fastener checks will fail earlier than a serviced room, and the cause will be maintenance rather than manufacture.
Keeping the schedule protects the room and keeps the cover intact. We provide a written report after every visit, so the record is yours rather than ours.
Who this is for
Not every sauna needs an agreement
These packages are written for rooms in commercial operation — hotels, gyms, spas, resorts and residences where a sauna runs most days.
A home sauna used a few times a week is a different job and does not need four visits a year. Tell us what you have and how often it runs, and we will tell you what it actually needs, including whether that is nothing at the moment.
We also service saunas we did not supply. A first visit on an unfamiliar room is quoted after we have seen photographs of the heater, the benches and the control gear.
Get a quote
Tell us about your room
Service agreements are quoted per sauna room. Multi-room venues and multi-site operators are quoted on application.
Or call 087 250 2426, Monday to Friday.
