COZY O-TW Thru-Wall Wood Burning Sauna Stove With Sauna Stones
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COZY HEAT O-TW Thru-Wall Wood Burning Sauna Stove With Sauna Stones
The heart of sauna is the heater. If the heat is not mild and you feel uncomfortable, then usually the stove is the problem
Wood- heated stoves are best for mild and long lasting heat, they are made for making the steam by throwing some water on the stones. We have been producing the sauna stones more than fifteen years and our specialists know all the secrets of good sauna already for generations
Our stoves are unique in Estonia. We are the only producers that meet the German BIMSCH certificate requirements in TÜV test without supportive equipment’s. Stove needs at least 25% fuel compared to similar heaters . In the test it was needed even 40% less fuel.
Smoke gases are 6x cleaner compared to similar heaters.
COZY12 O-TW
The safety room between the heater and flammable material (wood) is only 17cm without any fire protection screens.
COZY12 O-TW is suitable for sauna 6-13m3
COZY18 O-TW
The safety room between the heater and flammable material (wood) is only 23cm without any fire protection screens.
COZY18 O-TW is suitable for sauna 20m3
TECHNICAL DATA
| Model |
COZY12 O-TW |
COZY18 O-TW |
| Power: | 11,5 kW | 10,1 kW |
| Max fuel load: | 8 kg | 8 kg |
| Fuel: | wood – 30cm | wood – 30cm |
| Amount of Stones: | 120 kg | 160 kg |
DOCUMENTATION
COZY12 Declaration of Performance
COZY18 Declaration of Performance
FEATURES
- Why settle for ordinary when you can have extraordinary? The Cozy Heat O TW isn't just about warmth; it's about doing more with less. Utilizing 25%-40% less fuel than comparable sauna stoves, this model boasts minimal safety distances, making it both efficient and eco-friendly. Plus, it carries the prestigious German BIMSCH certificate, guaranteeing that its smoke gases are six times cleaner.
- Experience mild, long-lasting heat that envelops you like a warm hug. The Cozy Heat O TW's innovative circular rim design ensures even heat distribution throughout your sauna, while its floor mount thru-wall feature allows you to load wood from outside the sauna, keeping the interior clutter-free. Picture yourself pouring water over hot stones to create intense, luxurious steam that melts away the day's stresses.
- Elevate your sauna experience with the Cozy Heat O Thru-Wall Wood Burning Sauna Stove. Whether you're looking to unwind after a long day or seeking a communal space for friends and family, this stove delivers an experience like no other. Feel the difference that thoughtful design and expert craftsmanship bring to your wellness routine.
Cozy Heat Resources
- 2-Year Warranty
We pride ourselves on having the best return policies in the industry. Cancel your order any time before it ships completely free of charge (exceptions apply such as custom orders, see below).
If you have questions, please send an email to sales@wellnesshydro.com
Cancellations (Before Order Ships)
If you need to cancel an order, please contact us as soon as possible so we can refund you in full before your order leaves the warehouse.
Cancellations of Custom Orders
Custom or made to order products cannot be canceled or refunded as these products are put into production specifically for your order.
These units, are custom made to your specification or created once you order. Once you place your order they start building your unit. Your warranty will guarantee you a fully functional and operational product. If it is not clear whether your order is custom or made to order, please email us at sales@wellnesshydro.com
All sales are final for Custom made and Made-to-order products.
If you need to exchange your product, you may do so. You, as the customer, are responsible for any shipping costs throughout any returns and exchange processes.Not all orders are available for return once they have shipped. We order our products directly from the manufacturer. Therefore, if the manufacturer will not permit us to return a product, we cannot offer you a return. This often varies on a case-by-case basis; please reach out to us if you would like specific information on your brand and/or product.
Due to drastically increasing LTL/freight shipping costs, any outright returns will incur 25% cancellation fee + return shipping costs. If you are replacing the product with something else, we may be able to help you cover some of the costs depending on the product.
Frequently asked questions
When will I know my order has shipped?
As soon as you place your order, you will receive an order confirmation e-mail. This means that we have received your order in our system and pre-authorized your credit card for the purchase. As soon as we receive your order, we automatically reach out to our suppliers to confirm that it is in stock and available for immediate shipment. If your item is on backorder or unavailable, we will void the pre-authorization and reach out to you via e-mail. If your item(s) are available for immediate shipment (within 5 business days), we will process the charges and submit the order for shipment. If, for some reason, there is a delay in stock, we will contact you before accepting payment.
When will my order ship?
If your order is in stock and we process the charges to your credit card, it will ship within 2-5 business days from the date of your order. We will send you tracking information within 24 hours of your order leaving the warehouse to the e-mail address you provided when checking out. If you do not receive tracking information from us within six business days of your order, feel free to follow up with us at sales@wellnesshydro.com
No Shipping outside the lower 48 in USA.
How much does shipping cost?
Shipping is FREE
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The Top Sauna Questions Answered for You
Traditional (Finnish) Saunas: Typically operate between 150°F and 190°F (65--88°C), with a median standard between 165--180°F.
Infrared Saunas: Operate at lower, radiant heat temperatures, generally between 120°F and 150°F.
Beginners: Start with 10 to 15 minutes per session.
Advanced: You can stay longer (up to 20 minutes), but it is best done in "innings". Do a 15-minute session, exit to cool down and rehydrate for 5 minutes, and then return for another round. Always listen to your body and exit immediately if you feel dizzy or nauseous.
This is a matter of personal preference. Traditional saunas use heated rocks where you can add water to create steam and instantly increase the humidity. Infrared saunas are run dry without rocks or steam. You can also add essential oils to your water for aromatherapy.
Before: Yes, shower beforehand to rinse off perfumes, lotions, and oils to keep the sauna sanitary and help your skin sweat freely.
After: Yes, rinse off the sweat, salts, and toxins, and help your pores close back up.
Regular sauna use supports:
- Heart Health & Circulation: Improved vascular function and lower blood pressure.
- Muscle Recovery: Loosens stiff joints and eases muscle soreness.
- Detoxification: Flushes heavy metals (like lead, cadmium, and mercury) through heavy sweating.
- Relaxation & Sleep: Helps lower cortisol and promotes deeper, restorative sleep.
- Private Saunas: Go completely bare or wrap yourself in a cotton towel.
- Public/Gym Saunas: Swimsuits or towels are typically required by facility rules.
- Pro Tip: Avoid wearing metal jewelry as it can heat up and burn your skin, and leave electronics (phones, earbuds) outside—extreme heat damages batteries.
- Saunas cause significant fluid loss through sweating, resulting in temporary reductions in "water weight". However, it is not a replacement for regular exercise and a proper diet for burning fat.
Traditional Saunas: Heat the air in the room to high temperatures using electric or wood-burning heaters.
Infrared Saunas: Use invisible light spectrum wavelengths to heat your body directly rather than superheating the surrounding air.
- Proper ventilation is critical so you don't sit in a "suffocation box" with depleted oxygen and high CO₂ buildup. A well-designed traditional sauna has an intake vent near the floor by the heater and an exhaust vent on the opposite wall.
Sauna therapy is generally safe, but you should consult a doctor first if you have underlying cardiovascular conditions, take certain medications, or are pregnant. Never use a sauna if you have a fever, are under the influence of alcohol, or feel lightheaded.