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How to Look After an Outdoor Sauna in the Thai Climate
People often ask me if a timber sauna will just rot in Thailand. With forty-degree afternoons, ninety per…
Free Delivery · 1–2 Yr Warranty · After-sales Support

A small Chonburi-based team supplying saunas, ice baths and chillers built to last in the Thai climate. Quietly, properly, with people who actually know the product.
RonYen supplies made-to-order saunas, ice baths and chillers to homes, villas, gyms and wellness spaces across Thailand. Everything is chosen and built for one thing: the climate here. Humidity, heavy rain, salt air, full sun. Most sauna kit on the world market is built for Nordic conditions. Ours isn’t.
We’re a new company with a clear focus: the right timber, heaters and chillers for Thai conditions, delivered nationwide and installed by our own team. When you call, you get the people who know the products. Not a call centre, not a script.
And there’s more coming. This July we open RonYen Wellness Garden in Ban Suan, Chonburi, a private hot-and-cold sanctuary with a 90°C cedar sauna, 3°C ice baths and a lap pool. Soft opening 30 July, booking only.
Two ways to work with us. Want equipment? We deliver saunas, ice baths and chillers Thailand-wide, each one made to order in the timber and size that suits your space, backed by a two-year structural warranty as standard. Want to feel it first? Come to the Garden and run a full hot-and-cold circuit before you commit to anything.
And behind all of it is a small team that delivers, installs and runs the Garden themselves. When something needs doing, we do it. The people you meet are the people who build it.
Two product lanes, fully supported end to end. Pick one and click through, or talk to us first if you’re not sure.
Saunas & Heaters
Outdoor saunas in rectangle, cube and barrel styles, plus indoor and fully custom builds, in four timber options: Red Cedar, Japanese Hinoki, Japanese Cedar and Finnish Thermo Pine. Electric stone heaters, infrared, controls and aftercare parts.
Ice Baths & Chillers
Twenty-four ice bath styles plus custom-made options. Stainless steel tubs (304 and 316), cedar-clad combos, and standalone chillers sized for the Thai climate. Designed to hold 3–15°C reliably, with covers and filtration to keep water clean for weeks.
No high-pressure sales. We’ll tell you straight if a product isn’t the right fit for your space.
Phone, video or an office visit by appointment. We talk through your space, what you’re trying to do and what you’d like to spend.
Price, electrical brief, foundation requirements, delivery, warranty and care — all in one document. No obligation to commit.
60% deposit, then build. Weekly progress photos from week two. Free delivery throughout Thailand; international shipping by request.
Self-assemble with our manual, or have our team handle it. Two-year structural warranty and spare parts kept in stock for the long haul.
Every quote we send. Every product we ship.
Twice the industry standard. Covers the cabin frame, panels and joinery. Heaters and chillers carry their manufacturers’ warranties on top — typically another two years.
Free delivery throughout Thailand, including islands and remote sites. Our team handles site prep, assembly, electrical connection and a full functionality check on installation.
We don’t resell Nordic kit and hope. Every product is specified for the heat, humidity and salt air here: ventilated frames, appropriate timber treatments, chillers sized for the load.
The workshop and office are in Chonburi City. We deliver and install throughout Thailand and ship internationally on request.
If you’d like to discuss a project face-to-face, please book a free consultation first. We don’t run a public showroom yet, but we’re always happy to host an office visit by appointment.
Free consultation by phone, video or office visit. Quick written quote, no pressure to commit.
Tell us where to send it. We'll email your quote with all the products and options you've selected.
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