Custom outdoor and indoor saunas — Finnish in soul, with real löyly — plus ice baths, chillers and accessories. Designed, built and delivered across Thailand by the same Finnish-rooted team since 2020.
Take a 2-minute quiz — discover your sauna spirit, or get a real model recommendation and price.
Fah, Narak and Barrel — built to your dimensions, wood and heater.
Cedar, teak and stainless plunge tubs — Finland's winter ice-hole dip, rebuilt for Thailand.
½ HP to 2 HP — sized for Thai ambient. Hose, filter and starter kit included.
Electric and wood-fired sauna heaters, sized to your room — stones and controls included.
Buckets, ladles, stones, controls, lighting, signage and more.
Build your sauna in the browser — pick size, wood and heater, get a price instantly.
Choose the size, wood, glass, benches and heater in the 3D builder. See the price update as you design.
Prefer some help? Our team can refine your design. We confirm the specification and send a clear quote.
For custom saunas with on-site assembly
Approve your quote and pay the deposit to confirm your order and start the build.
Before delivery, have a qualified electrician prepare a suitable, energised supply within 3 metres of the agreed sauna connection point, with the specified voltage, phase and capacity.
When your custom sauna is assembled and tested on site, you (the buyer) or a qualified representative authorised to inspect and accept the sauna and make payment must be there. Pay the 40% instalment on site that same day, after testing.
Our team assembles and tests the sauna with you or your qualified, authorised representative present. Pay the 40% instalment that day, then both parties sign the handover. Record any deferred testing or outstanding work. The final 10% is due within 7 days of completion; expressly agreed quotation terms take priority.
For delivery or collection, the same 50/40/10 sauna schedule applies. Agree where assembly and completion take place in the quotation.
Teak · 2400 mm · Mae Sai
Pine · 2200x2200 mm · Bangkok
Teak · 1800x1700 mm · Koh Samui
Pine · 1200x1700 mm · Koh Phangan
Pine · 2200x1700 mm · Bang Saen
Teak · 5000x2000 mm · Bangkok
We're developing a new ice shower for home and commercial use — built right here in Thailand. Here's why it might suit you better than an ice bath.
Read →
Every Sisu Sauna ships with an interactive assembly manual built for your exact build — not a generic guide. Here's how it works.
Read →
Electric heaters are the practical choice for most Thai sauna builds — but wood-fired is available, and a gas option is on the way.
Read →
42 °C at the floor, 80 °C on the upper bench — same room, same heater. Here's why that gap is the design working exactly as intended.
Read →
Wire sizes, breaker ratings and circuit requirements for home sauna heaters — what you need to know before you wire anything.
Read →
Good ventilation in your indoor sauna room prevents moisture damage and mould — here's what to do, especially in Thailand's already-humid climate.
Read →We are a small Thai–Finnish crew building out of our own workshop in Surin, with a showroom in Bang Saen. We cut, frame, clad and finish every cabin ourselves, then deliver and install it with you on-site. No middlemen, no drop-shipping — just people who love saunas building yours.
Every Sisu wall is a factory-built sandwich panel. A welded 50 mm box-steel skeleton carries the structure, insulation fills every cavity, a foil vapour barrier seals the hot side, and both faces are boarded with plywood and clad in real wood. Rigid, straight and insulated — built for Thai heat and humidity.
Animated cross-section — the actual construction of every Sisu wall panel.
Hot air rises, so the temperature climbs roughly 2–3°C for every 100 mm of height — up to 100°C at the ceiling. That layering creates natural micro-climates: sit on the upper bench for the full heat, the lower bench for a gentler session. Everyone in the same sauna picks their own.
Temperature layering in a Sisu sauna — the gradient every sauna bather knows.
The same 3D model you configure in the designer is the sauna we hand-build. Drag the handle to compare — or just watch it change.
3D Design
Built by Sisu
Panoramic commercial sauna
Your sauna arrives as finished panels and goes together in the same order as our real installation guide — from your level concrete pad to the first heat-up.
Typical on-site assembly sequence of a standard sauna.
A chiller plumbs into any shower head. Switch it on, wait about 20 minutes for the water to run ice-cold, then step under a fresh, flowing stream — no ice needed. It's far faster than an ice bath: no filling a tub, and no waiting 4–5 hours for the water to get cold.
How it works: mains water → chiller → any shower head → ice-cold.
Warranty support starts with remote diagnosis. Covered defects and Sisu installation faults are remedied under the applicable warranty and law. If inspection confirms a fault caused by the customer, both collection and return shipping, inspection and approved repairs are chargeable at reasonable rates or an estimate agreed in advance. Unrelated warranty rights remain intact.
Read warranty, service and shipping terms →The complete designer covers every Fah, Narak and Barrel build — glass, heater, benches and more, with live pricing and instant quotes.
Open the full 3D builder →The most interesting stories from the sauna & cold-plunge world — a short, free weekly email. No spam, unsubscribe anytime.
Read this before you apply
Sisu Sauna is owner-run and built for the long term. Before you apply, understand what you are joining:
Free to join · no stock needed
Calculated on prices excluding VAT · delivery & on-site assembly excluded
After approval you'll sign the full partner agreement online in your portal · see our reseller map
Already a reseller? Sign in
