These terms govern all orders placed with Sisu Sauna Co., Ltd. (บริษัท ซิซู ซาวน่า จำกัด), DBD No. 0325563001226, registered in Surin, Thailand.
Customers and third parties must not open, disconnect, rewire, modify, reprogram, reset, bypass or otherwise interfere with any electrical control cabinet, power supply, sauna controller, heater connection, contactor, sensor, safety device, firmware or PIN/access-control system supplied by Sisu Sauna Co., Ltd. without prior written authorization from the company.
This restriction applies both before and after full payment and transfer of ownership. It does not prevent normal operation according to our instructions, emergency electrical isolation, lawful inspection of work or necessary action to prevent immediate danger.
Where unauthorized interference has occurred or is reasonably suspected, the sauna may not be operated until its electrical and safety systems have been inspected and confirmed safe.
The customer is responsible for reasonable, documented inspection, repair and recommissioning costs to the extent caused by unauthorized interference. Warranty coverage may be excluded only for faults or damage caused or aggravated by such interference.
These provisions do not limit the customer's statutory rights or Sisu Sauna's responsibility for defects arising from its own products, installation or workmanship.
Equipment supplied by Sisu Sauna remains subject to the ownership provisions of this agreement and applicable Thai law.
For new sauna orders placed from 2 November 2026 that include a new controller, use is protected by two separate 6-digit payment PINs. The first is required at the first midnight after the recorded installation (Thailand time) for the 40% instalment. The second is required 7 days after the recorded installation for the final 10%. Sisu sends each PIN within 24 hours after verifying receipt of the corresponding payment, normally the following day; it may be entered before its deadline. The sauna may remain locked while the code is being issued. Without the required PIN, sauna use is disabled. All relays switch OFF when a PIN gate activates and when a payment PIN is entered; active sessions and one-time and weekly timers are cancelled. Entering a PIN does not restart anything. Once the second PIN is accepted, payment protection is permanently complete: no further payment PIN is required, including after restarts, panel resets or firmware updates. Until the second PIN is accepted, power cycling or a panel reset does not remove an outstanding PIN requirement. Existing installed panels and ice baths are excluded. Any expressly agreed alternative payment terms and statutory rights take priority; arrange the PIN release with Sisu accordingly.
At completion of on-site assembly of a custom sauna, the buyer or a competent representative authorised by the buyer to inspect and accept the work, sign the handover acknowledgement and pay the 40% assembly instalment must be present at the agreed site and able to make that payment. Any different payment schedule expressly agreed in the quotation takes priority.
Pay 40% when assembly is complete (tested where possible). Once that payment is received, both parties sign the handover acknowledgement and each keeps a copy. The final 10% is due within 7 days of the recorded completion date, subject to the agreed quotation and statutory rights.
If testing cannot be completed, record the reason and an agreed testing date. Do not operate the sauna until safe testing has passed. Deferred testing does not waive defect or warranty rights or any lawful right to withhold payment.
Any additional costs require a lawful basis, reasonable evidence and written agreement. An instalment due after assembly or completion is not payable before unloading.
A signed handover does not waive rights for recorded defects, latent defects, concealed defects or statutory remedies. Outstanding work and retesting dates must be recorded accurately.
All goods remain the property of Sisu Sauna Co., Ltd. until payment has been received in full.
To keep things clear for everyone, the terms that apply are the ones Sisu Sauna Co., Ltd. confirms in writing. A discount, special arrangement, or other promise made verbally — by anyone, including our own team — becomes binding once we've put it in writing. So if something's agreed along the way, just ask us to confirm it and we'll gladly do so.
A quote is valid for 14 days from the date we issue it. After that, prices and availability may change.
For imported items, we may adjust the price before you confirm your order if our supplier costs, import costs, or exchange rates change.
Unless we state otherwise, the prices we show include 7% VAT. Where we issue a non-VAT receipt, no VAT applies and the price is shown net.
Custom sauna with on-site assembly: 50% to initiate the order and begin production; 40% when the sauna is fully assembled and tested where possible; the final 10% within 7 days of completion. Record the completion date, any deferred testing and outstanding work in the signed handover acknowledgement. A different payment schedule expressly agreed in the quotation takes priority. The client must have a suitable, energised power supply ready no more than 3 metres from the agreed sauna power connection point before delivery, so the sauna can be tested after assembly. A qualified electrician must prepare the supply to the specified voltage, phase and capacity. The 50% deposit is non-refundable once production has started.
Custom sauna without on-site assembly (delivery or collection only): 50% to initiate the order and begin production; 40% when the sauna is fully assembled and tested where possible; the final 10% within 7 days of completion. Record the completion date, any deferred testing and outstanding work in the signed handover acknowledgement. A different payment schedule expressly agreed in the quotation takes priority. The 50% deposit is non-refundable once production has started.
Imported goods (chillers, heaters, and other imported equipment): paid in full before we place the order. We don't start or place the order until the full amount is in.
50% to initiate the order and begin production; 40% when the sauna is fully assembled and tested where possible; the final 10% within 7 days of completion. Record the completion date, any deferred testing and outstanding work in the signed handover acknowledgement. A different payment schedule expressly agreed in the quotation takes priority. Imported goods remain payable in full before ordering.
Bank transfer (Kasikorn Bank) — no fees. Card payments and PromptPay QR are handled securely through Stripe; international wire transfer is available for overseas orders.
If a balance falls overdue, interest of 1% per month applies only to the remaining unpaid balance until that balance is cleared. And if you ever expect a delay, just let us know — we're always happy to talk it through.
The goods remain our property until they're paid for in full, and ownership passes to you as soon as the final payment clears.
For custom saunas, the 50% deposit gets your build underway and covers the materials and work we commit to right away, so it's non-refundable once we've started. If you need to cancel after that point, or you're unable to accept delivery, we keep the deposit to cover what we've already put in.
We agree an estimated delivery date when you confirm your order. Please make sure we can reach the delivery spot and that someone is there to receive the goods on the day.
For large or heavy items where on-site assembly isn't included, please have at least 3 able helpers on site to unload — our driver can't safely move heavy goods into position alone. If there aren't enough hands and we're not able to unload safely, we'll treat it as a missed delivery (see below), simply to keep everyone safe.
If we arrive and can't deliver because no one's there or the site isn't ready, we'll need to cover the wasted trips — ฿1,000/day until we can deliver, settled before the goods go out. If we still can't deliver after 14 days, we'll work out the best option with you: storing the goods (at cost) or, as a last resort, cancelling the order and keeping the deposit. We'd always rather find a time that works, so just let us know if plans change.
Need to change the delivery date? Let us know at least 7 days ahead. New dates depend on our availability.
From the agreed delivery date, the goods are in your care — even if delivery couldn't go ahead because the site wasn't quite ready. So it's worth making sure everything's set for the day.
Please give everything a once-over on delivery and let us know in writing within 7 days if anything's damaged or faulty, so we can put it right quickly. After 7 days, we'll take it that everything arrived in good order.
If we miss the agreed delivery date, that's on us — you'll receive 0.2% off the order value for each day we're late, up to 5% of the total and capped at ฿15,000. This discount is the compensation we provide for late delivery, and it applies only to delays within our control — it doesn't apply where the delay is caused by the site not being ready (for example, an unfinished base, blocked access, or the mains supply not yet run).
Please make sure the site can handle the product — including whether the floor can take the weight. Loaded ice baths and saunas are heavy, so if there's any doubt, it's worth having a structural engineer confirm the floor can hold it. Leave at least 300mm of clearance on all sides of chiller units. We aren't able to cover damage that results from assembling on an unsuitable surface, so a quick check ahead of time is always wise.
Our saunas arrive as panels. The largest — a roof section — can be up to 1.8m wide and over 4m long. The route from where our lorry can park to the sauna's final position needs to be at least 1.8m wide along its whole length, firm and level underfoot, with enough turning room to swing a panel over 4m long around every corner. Straight-line width is the easy part — corners, stairs and landings are what actually stop a delivery. If you're not sure, just tell us and we'll arrange a site visit.
Delivery access is the customer's responsibility. If the site turns out to be inaccessible on the day, the cost of the wasted trip and any return visit is charged to you under the "Missed Delivery" terms above. A quick walk of the route beforehand saves everyone this cost.
If our lorry can't reach the sauna's position, or the panels have to be carried over steps, slopes, or ground a vehicle can't cross, an access surcharge applies. It's assessed and quoted before delivery — by site visit where necessary — and must be agreed before the delivery date is confirmed. We won't apply it without telling you first.
For sites on islands, hillsides, or anywhere our lorry may not reach, we'll ask for a site visit before confirming your delivery date. The visit costs ฿3,000 and is credited in full against your order when you buy. If the visit shows we can't install at your site, we refund the fee in full — you're paying for the answer, and if the answer is that we can't, you shouldn't be out of pocket for it. Visits may be carried out by our own team or by an authorised reseller in your area.
When your order includes on-site assembly, the site needs to be ready for us to work on the agreed assembly day. To help everything run smoothly, ready means:
Before we send our crew out, we may ask you to confirm the site is ready — a few photos are a great help. If our crew arrives and the site isn't ready for assembly, we'll reschedule to our next available date, and because the trip still costs us, the delivery charge applies again for the return visit — equal to the delivery charge shown on your order, or our standard delivery rate for your region if delivery wasn't itemised separately. On-site assembly itself is only ever charged once, when it's actually carried out; this second charge is a repeat delivery covering the return trip with our crew and equipment, not a second assembly. It applies even where the site had been confirmed ready, simply because the journey's already been made. Anything we've already delivered stays subject to the "Missed Delivery" terms above. A quick check before the day saves everyone this extra cost.
The client arranges a qualified electrician to prepare a suitable, labelled supply position within 3 metres of the agreed sauna connection point before delivery, and to complete and test the incoming cable connection at the designated terminals inside Sisu’s box after it is positioned. Unfinished conductors must remain safely isolated and enclosed. The client and their electrician are responsible for the incoming supply wiring, upstream feeder protection, earthing, available capacity and voltage quality under the planned heater plus household load, including arranging any necessary utility assessment or upgrade. Being far from the transformer or at the end of a village line can affect loaded voltage. Sisu’s unit retains its own breakers, RCBO and built-in isolation; the electrician must verify the actual device ratings, isolation suitability and coordination with upstream protection and the exact heater instructions. With on-site assembly, Sisu assembles and wires its supplied components, checks the incoming supply at its box and tests the sauna. For self-install kits, the client arranges qualified installation, testing and commissioning. Do not operate until the required tests pass. These responsibilities do not exclude Sisu’s responsibility for its own supply or workmanship, or applicable statutory and warranty rights.
During delivery and on-site assembly we may photograph and film our work, and use those images and videos to promote Sisu Sauna — on our website, social media, and marketing materials. We avoid capturing people without their agreement, and we won't reveal your exact address. If you'd prefer we didn't film or photograph at your site, just let us know in writing before the assembly day and we'll respect that.
Every sauna we build is covered by a tiered warranty against manufacturing defects, under normal use and proper maintenance:
Not covered: the normal weathering and colour change of exterior wood, heater stones, and other consumables — these are part of normal use, not defects.
Ice baths and their equipment carry the same tiered warranty against manufacturing defects, under normal use and proper maintenance:
Consumables — filter cartridges, screen filters, ozone bulbs — aren't covered.
Sisu Sauna provides warranty support for defects covered by the applicable product or installation warranty. To report a fault, contact us with your order details and a description of the problem. Service normally begins with remote diagnosis. We may request photographs, videos, error codes or other reasonable information needed to identify the cause.
Where appropriate, we may resolve a covered fault through remote assistance, shipment of replacement parts, an approved local technician, collection for workshop repair, or attendance by a Sisu Sauna technician.
Unless otherwise stated in your quotation or order, warranty coverage includes approved replacement parts and reasonable labour required to rectify a covered defect. This is subject to your rights under applicable law.
Travel, transportation and accommodation associated with on-site attendance outside a service area expressly specified in your quotation or order may be chargeable where permitted by law. Any such charges must be explained and agreed before attendance. No inspection, freight or attendance charge will be imposed where doing so would exclude or restrict Sisu Sauna's liability for a defect under applicable Thai law.
Where a fault results from defective installation or workmanship performed by Sisu Sauna, we will bear the reasonable costs necessary to rectify that work, including required on-site attendance. This includes a sauna roof leak caused by our installation or workmanship. For covered workshop repairs, we will bear reasonable collection and return freight costs arranged or approved by us.
Warranty does not cover faults or damage caused by misuse, accidental damage, inadequate maintenance, blocked filters, unsuitable water conditions, external electrical supply problems, power surges, lightning, pest damage, normal wear, or incorrect assembly, adjustment or alteration by the customer or a third party.
Examples include a drain plug left loose or incorrectly refitted by the customer, allowing air into the circulation system and causing pump errors; and sauna bench or seat-panel damage caused by jumping, impact or other misuse.
Incorrect assembly or modification of plumbing connections is also excluded where it causes or contributes to the fault. This includes applying PTFE tape to fittings designed to seal with an O-ring where tape is not specified by the manufacturer.
These exclusions do not apply where the fault results from Sisu Sauna's own supply, installation or workmanship. An unrelated customer modification does not, by itself, invalidate coverage for a separate covered defect.
Collection or inspection of a product does not confirm that the reported fault is covered by warranty. Coverage is determined from the inspection findings, which we will explain to the customer.
Before arranging collection, Sisu Sauna will explain and obtain the customer's agreement that, if inspection establishes that the fault was caused by incorrect use, assembly, adjustment or maintenance rather than a covered defect, the customer must pay both the collection and return shipping costs, together with inspection charges at the rates or estimate agreed in advance.
For other faults established to be outside warranty, reasonable inspection, collection, freight, return delivery, travel, labour and replacement-part costs associated with that fault are also chargeable. Before collection, inspection or on-site attendance, we will explain the potential charges and obtain agreement to the applicable rates or estimate. Any additional chargeable repairs require the customer's approval before proceeding.
Nothing in these terms limits any rights that cannot be excluded under applicable law.
We stand behind what we sell. That said, our responsibility is limited to the amount you paid us for the product itself, and doesn't extend to knock-on costs, lost use, separate installation work, or third-party claims.
If you're ordering on behalf of someone else — as an agent, contractor, designer, or buyer — then our agreement is with you, and you're our main point of contact. We rely on you to pass our specifications, site-readiness requirements, and product information on to your client, and to arrange access on the day. Standby, return, and storage charges stay with you, and warranty and any claims come to us through you rather than directly from the end client. And if the product will be used for something we weren't told about, we'll leave it to you to confirm it's the right fit for that use.
Saunas and ice baths aren't for everyone. If you have a heart condition, high blood pressure, are pregnant, or have any other health concerns, please check with your doctor first, and never use a sauna or ice bath after drinking alcohol. Enjoyed sensibly they're wonderful — but we can't be responsible for health issues that arise from use.
Every so often, things happen that no one can plan for — natural disasters, material shortages, transport disruptions, government restrictions, and the like. We can't be liable for delays they cause, but if one affects your order we'll keep you posted and may extend the delivery or on-site assembly timeline for as long as it lasts; an extension on these grounds isn't a breach of contract.
We handle your personal data in line with Thailand's Personal Data Protection Act (PDPA). We use the details you give us — and any photos or video from delivery and on-site assembly — only to fulfil your order, support you, and promote our work as described above. For the full picture of what we collect and your rights, see our privacy policy at sauna.in.th/privacy.
We'll always try to sort out any disagreement through good-faith talks first. If that's not possible, Thai courts and Thai law apply.
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Sisu Sauna is owner-run and built for the long term. Before you apply, understand what you are joining:
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