By Paulius Damašas, CEO
A sauna is a building, an appliance and a piece of furniture at the same time, which is why “what is the warranty?” is a harder question here than it is on a dishwasher. The short answer is simple. Celsium warrants every product for 24 months against material and production defects, effective from the delivery date. The longer answer is what this article is for, because the useful information was never the number. It is which parts are covered by whom, what quietly invalidates the cover, which clock starts when, and what actually happens after you send the first email.
If you are still weighing whether to buy a sauna or build one, this page is half of that argument. A manufactured sauna transfers a defined quantity of risk from you to the factory, and everything below is the definition of “defined”.
Celsium’s published warranty is 24 months covering material and production defects, effective from the delivery date, and the warranty page states it as a 2-year guarantee on all products. An outdoor cabin, an indoor sauna and a hot tub all start from that term. The structural timber build is the heart of it: the frame, the joinery and the factory workmanship that turns machined timber into a weathertight room.
Two details matter more than the headline. First, the term runs from delivery rather than from the invoice or the order date, so a long production slot does not quietly consume it. Second, the full conditions live in the user manual for your product, and that manual, rather than any web page, is the governing document. Read it before the installation team leaves, not after something goes wrong.
Heaters, control units and other electrical components are covered by their own manufacturer’s warranty rather than by Celsium’s, and the equipment makers Celsium works with give 2 years. So the term matches the structure’s 24 months, and the difference is legal rather than practical.
The part that matters to an owner is the route, and here Celsium’s answer is unusually clean: you turn to Celsium, not to the heater manufacturer. You do not chase a component maker in another country, prove which part failed, or sit between two companies pointing at each other. Keep the heater and control unit paperwork with the sauna manual anyway, because a serial number speeds everything up, then send one email to one address.
Glass is covered where a manufacturing defect is confirmed. Accidental breakage is not covered, and neither is damage caused during installation. Toughened sauna glazing fails rarely and dramatically, so photograph the glass at handover while the installation team is still on site.
Timber is the one people argue about, and the warranty page is explicit. Cover does not extend to natural wood characteristics such as discolouration, dimensional changes, or cracking due to fluctuating or excessive humidity. That is not a loophole. A sauna wall spends its life cycling between cold, wet and roughly 90 degrees, and timber answers by moving. How much it moves depends on the construction, which is the practical reason to read the comparison of insulated and solid wood construction before choosing a cabin. Good ventilation, a consistent heating routine and annual care do more to keep a wall stable than any warranty clause can.
Weather damage, including damage caused by thunder, is excluded. That is an insurance question rather than a warranty question, and the guide to fire safety and insurance for wood-fired saunas covers how to get an outbuilding of this kind properly onto a household policy.
The published exclusions, together with the operational detail the service team works to:
The last one is the cheapest to avoid and the most expensive to discover late, which is why the guide to delivery and access gives the ten minutes before you sign a section of their own.
Both windows are deliberate, and they cover different things. The 48 hours is for damage that arose in delivery, reported within 48 hours of arrival under the returns and refunds policy. The 7 days is for a defect inside the sauna, or for anything unrelated to delivery, reported to the seller within 7 days of discovery under the warranty terms. One clock starts at the tailgate, the other starts the moment you notice. Celsium’s general conditions of sale, which apply to buyers acting in a commercial or professional capacity and can be applied to a consumer contract by agreement without prejudicing statutory rights, add the same discipline at handover: inspect the goods immediately for quantity, quality, conformity with the documents and external damage to the product or its packaging, then notify without delay and in any event within seven calendar days, with photographs where possible.
The practical reading is one line. Inspect before you sign, photograph everything, and report the same day. A fault reported inside the window is a service job. The same fault reported a month later is an argument.
On an upheld claim, all related costs are covered. That is Celsium’s own statement of practice, and it is the answer to the two questions this kind of article usually dodges: the labour and the shipping of a replacement part are not billed back to the owner. Worth having in writing on your quotation anyway, because “in writing” is the difference between a policy and a promise.
One honest gap remains. Celsium does not publish a fixed on-site attendance time per country. If a technician standing in your garden, rather than a part in a box, is what matters to you, ask what applies at your address before you sign, and ask for the answer in the quotation.
The warranty page carries one sentence that changes the picture for a business buyer: warranty periods vary for products mounted on trailers and those intended for commercial use. For commercial use Celsium’s term is 12 months rather than 24, which is what a hotel, a spa, a gym or a rental operator should budget around, because a cabin used by fifteen guests a day is not a cabin used by one family at the weekend. Trailer-mounted units are agreed per project. Either way the number that binds is the one in your written quotation, sitting next to the service response you are actually buying. Hospitality and trade buyers can open that conversation through trade access.
Use these on Celsium and on every competing quotation. A brand that cannot answer them in writing has told you something.
The sixth question is the one nobody publishes: how quickly does a technician reach my address? Celsium does not state a per-country figure, so ask for it and have the answer written into the quotation rather than promised on a call.
Celsium provides a 24-month warranty covering material and production defects, effective from the delivery date, on all products. Saunas and hot tubs share that term. Products intended for commercial use carry 12 months, trailer-mounted products are agreed per project, and the written quotation is the governing document in both cases.
The heater, the control unit and the other electrical components carry the equipment maker’s own warranty rather than Celsium’s, and that warranty runs 2 years, the same length as the cover on the structure. The route is the useful part: you claim through Celsium rather than contacting the heater manufacturer yourself.
Yes. Where a warranty claim is upheld, all related costs are covered, which includes the work and getting the replacement part to you. Celsium does not publish a fixed on-site attendance time per country, so if a technician on site matters to you, ask for that figure and have it written into your quotation.
Glass is covered where a manufacturing defect is confirmed. Accidental breakage is not covered, and damage caused during installation is not covered. Photograph the glazing at handover while the installation team is still on site, because that photograph is what separates a defect from an accident.
No. The warranty does not extend to natural wood characteristics such as discolouration, dimensional changes, or cracking caused by fluctuating or excessive humidity. Timber in a sauna moves by design. Good ventilation, a consistent heating routine and annual maintenance are what keep that movement small.
The cover is invalidated if the sauna is not assembled by Celsium, if the guidance in the user manual is not followed, if the product is modified or repaired without authorisation, if it is stored or kept in unsuitable conditions, or if it is used for a purpose other than its intended function. Insufficient maintenance and improper electrical connection are also excluded.
Email hello@celsiumwellness.com with your order or invoice number, a description of the fault, photographs, and video where it helps. You receive an acknowledgement within 1 to 2 working days, then the technical team reviews the case and may ask for more photographs, measurements or a test before proposing troubleshooting, replacement parts or another solution.
Claims are acknowledged within 1 to 2 working days. Parts held in stock are dispatched within a few working days of a decision, while made-to-order parts carry an individual production time quoted for that part. Reporting quickly, with clear photographs first time, is the part of the timeline you control.
Yes, and there are two windows, each for a different thing. Damage that arose in delivery is reported within 48 hours of arrival under the returns and refunds policy. A defect inside the sauna, or anything unrelated to delivery, is reported within 7 days of discovery under the warranty terms. Inspect at handover, photograph everything, and report the same day.
Book a consultation and bring your quotation questions, including the two this page could not answer for your country. Or explore outdoor saunas.
Buying vs Building a Sauna · Insulated vs Solid Wood Saunas · How to Prepare Your Outdoor Sauna for Winter · Wood-Fired Sauna Fire Safety and Insurance
The Complete Guide to Home Saunas, Celsium’s full guide to choosing, buying and owning one.
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