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  • The Redwood Outdoors 4-person cabin sauna is the perfect choice for anyone with a smaller backyard. The compact design includes 2-level seating so you can cycle between high and low heats without changing your heater settings. Quick and easy assembly!
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  • The Redwood Outdoors 4-person cabin sauna is the perfect choice for anyone with a smaller backyard. The compact design includes 2-level seating so you can cycle between high and low heats without changing your heater settings. Quick and easy assembly!
  • The Redwood Outdoors 4-person cabin sauna is the perfect choice for anyone with a smaller backyard. The compact design includes 2-level seating so you can cycle between high and low heats without changing your heater settings. Quick and easy assembly!
  • The Redwood Outdoors 4-person cabin sauna is the perfect choice for anyone with a smaller backyard. The compact design includes 2-level seating so you can cycle between high and low heats without changing your heater settings. Quick and easy assembly!
  • The Redwood Outdoors 4-person cabin sauna is the perfect choice for anyone with a smaller backyard. The compact design includes 2-level seating so you can cycle between high and low heats without changing your heater settings. Quick and easy assembly!
  • The Redwood Outdoors 4-person cabin sauna is the perfect choice for anyone with a smaller backyard. The compact design includes 2-level seating so you can cycle between high and low heats without changing your heater settings. Quick and easy assembly!
  • The Redwood Outdoors 4-person cabin sauna is the perfect choice for anyone with a smaller backyard. The compact design includes 2-level seating so you can cycle between high and low heats without changing your heater settings. Quick and easy assembly!
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Thermowood Cabin Outdoor Sauna - 4 Person

$ 5,999

Availability: 8 to 10 Weeks Lead Time

Also Consider:

This sauna is the perfect choice for anyone with a smaller backyard. The compact design includes 2-level seating so you can cycle between high and low heats without changing your heater settings. Quick and easy assembly!

Heater:
Heater
Read Heater Details Upgrades:
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Add Luxury Relaxation Pack?
Add Shower?
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Built to Last

Designed for the outdoors and time tested by thousands of happy customers

Clear Your Mind

Start your day with a clear mind or destress after a long day, make saunaing part of your mindfulness routine

Sweat it Out

A sauna is an investment in your mental and physical health, let your sweat carry your stress away. You won't believe how problems just roll off your back

Customer Reviews & Photos

Assembly

Get Our Free Product Assembly Manual

Product Details

Have questions about our cabin saunas? Call us now on 1800 567 8036.

Every Redwood Outdoors Cabin Sauna kit comes complete with a Harvia electric heater, sauna rocks, and interior seating benches. Our saunas will heat up to 195 F in under an hour, and can be enjoyed either wet or dry, catering to a true Scandinavian sauna experience.

Cycle Between High And Low Temperature Without Leaving Your Sauna With Two-Level Seating

In Finland, the rule for a truly deep sauna bath is that your feet should be above the heater. We've designed this sauna so you can do just that. Sit on the top bench and get your whole body into the hottest part of the sauna to take your sweat to the next level! Once you're ready for a break, move the lower benches to cool down. Cycle between the top and bottom bench to natually adjust your temperature without having to adjust your heater, making for an epic sauna session. 

Thermowood Construction 

Thermowood is created by heat treating Scandinavian softwood to temperatures ranging from 180 – 230° in special chamber kilns for up to 96 hours. Steam is used as a protective gas and helps to prevent the wood from splitting and becoming damaged during treatment.

Learn more about thermowood in our FAQ section!

Thermowood’s Characteristics & Qualities

This process causes chemical and structural changes to occur within the timber, which therefore alters some of its characteristics and qualities. Some of the characteristics and qualities that make Thermowood such a popular specie includes:

Dimensionally Stable – The intensive heat the wood is exposed to during its production dries out deep into the core, causing all moisture and resin to be removed from the timber. Thermowood therefore doesn’t react to changes in humidity as drastically as untreated wood (the risk of swelling, cracking and shrinkage is decreased), allowing it to retain its shape far better. The wood also doesn’t secrete sap or resin even in high temperatures.

Environemntally Friendly – The softwood used to produce Thermowood originates from well-managed, PEFC-certified forests, and as no chemicals or foreign substances are involved during its production, Thermowood is an environmentally friendly material produced by using only natural methods.

Resistance to Rot and Fungi – Due to the heating process breaking down hemicellulose, the wood doesn’t contain the appropriate nutrients to allow rot and fungi to grow and develop.

Increased Longevity – When wood is treated with heat, its average life span is prolonged meaning your sauna will last a lifetime!

Improved Insulation – Wood that has been heat treated is much more porous than untreated wood, vastly improving its insulating properties.

Traditional Scandinavian Design

The Scandinavian cabin sauna has a classic beauty in its elegant simplicity. Our cabin saunas are constructed with interlocking lumber that fit together forming a strong exterior. This interlocking system allows the lumber staves to expand and contract naturally, and to form a tight seal. Not only are our cabin saunas lovely to look at, their design is incredibly energy efficient and helps to distribute the heat evenly throughout the interior.

Harvia Sauna Heater, Made In Finland

Harvia is the world’s leading sauna heater manufacturer and Harvia heaters are considered the industry gold-standard. Harvia is was established in Finland in 1950 and has built an international reputation for exceptional quality. With a Harvia heater, you know you are getting a reliable product that you and your family can trust. All our Harvia sauna heaters are ETL certified and are manufactured in Finland.

Manual Control or Wi-Fi Control Heater Options

Our manual control heaters have two dials: a temperature dial and a timer. The timer can be set for up to an 8-hour delay, meaning you set your heater to come on while you are out and your sauna will be ready when you get home.

Our digital Wi-Fi heaters can be controlled via the digital wall pad mounted nearby your sauna, or from any smartphone or tablet. The big convenience of the Wi-Fi control is the remote start capability which allows you to pre-heat your sauna from anywhere—whether at the office or on the slopes. With few taps on your phone, your sauna will be ready when you get home. Wi-Fi heaters can also be pre-set to come on at a specific time of day, such as early in the morning. 

Unfortunately, you cannot upgrade a manual control heater to a digital Wi-Fi system in the future. While the manual and digital heaters look very similar, they are in fact totally different heaters. This means you must select the control system you are going with at the outset.

Easy Self Assembly

Putting together the our sauna kits is easy! All our saunas are designed with the DIY customer in mind. All the pieces are pre-cut and grooved, so no sawing or cutting is required. 

Anyone with novice woodworking skills could build one in approximately 4 hours. All the assembler will need is a level, Phillips screwdriver, 7/16″ and 9/16″ open end wrenches, 9/16″ deep socket wrench, vise grips, and a mallet.

Shipping Across The USA

We ship our saunas to everywhere in the United States to sauna enthusiasts who enjoy the wellness benefits of heat and steam!

* Specifications are approximate and subject to change without notice, actual product dimensions may vary

Product Diagram

Specifications

Seating Capacity
4 people depending on the seating arrangement as well as the size and proximity of the bathers
Wood Type
Scandanavian Thermowood
Exterior Dimensions
78 ¾” L x 59” W x 96 ¾” H
Weight
800 lbs
Accessories Included
Bucket and ladle, backrest, sauna rocks, light fixture
Door
Tempered glass door included
Porch
Not included
Number of Cradles
None
Electrical Requirements
110V for lighting and 240V for heater
Light Fixture Dimensions
9" L x 9 ¼ W x 7" H

Packaging & Shipping Information

Shipping Format
Wooden crate
Shipping Dimensions
87 ¾” L x 41” W x 33 ½” H
Our wooden saunas come with a 1-year limited warranty. For Harvia sauna heaters, Redwood Outdoors provides a 1-year warranty on heating elements and a 5-year limited warranty on other sauna heater components for residential usage. Please refer to https://www.redwoodoutdoors.com/warranty for detailed warranty information on our products.
  • Best Possible Customer Service

    Feb 16th 2024

    Kate Lockwood

    5

    We purchased a thermowood 4 person sauna from Redwood Outdoors and we simply cannot say enough wonderful things about it. The craftsmanship is incredible and the care they put into the shipping is the best I've seen. The assembly instructions were top notch and my husband and I had a blast putting it together. We had some initial electrical problems getting our sauna heater to work as a result of some funky wiring issues with our house. Redwood Outdoors provided some of the best customer service I've ever experienced. They stuck with us through the whole process, heard all of our concerns and worked closely with our electrician to get things resolved. Our sauna has added so much enjoyment to our lives and it's become a favorite part of our day. Know that when you purchase from Redwood Outdoors, you're not only buying a gorgeous and lasting product, but you are also receiving some of the best possible customer service. You guys have set the gold standard and we couldn't be more happy that we chose to buy from you! All the Best, Kate and Jon L P.S. Get the Luxury Relaxation Pack! It's worth every (s)cent! ;)

  • Great Product

    Feb 16th 2024

    Eric Ranta

    5

    I recently purchased and assembled a Redwood 4 person cabin sauna over a concrete and tile support pad. I am fortunate to live close to Redwood Outdoors to be able to see and enter into the unit.I have been impressed with the showroom area and the attentive courteous service I received and continue to receive from the Redwood people. The assembly of the unit, at first a bewildering pile of lumber, turned out to be fun. ; not that much unlike Lincoln logs from another era. The construction manual was easy to follow; the parts fit together without a hitch. My only criticism is with the screws included,which ,in my mind need an upgrade ( a few stripped heads going into hard wood). The process took three days and continues with minor tweaks. Concerning function, the sauna provides a perfect amount of heat; I am looking forward to years of enjoyment. Eric Ranta

  • Great Customer Service

    Feb 16th 2024

    Tom Burns

    5

    Redwoods Outdoors is a fantastic company. I called several times for support and they were extremely helpful. The sauna is easy to assemble and the quality of the materials are superior. If you are looking for quality and attractive sauna, look no further!

  • ROOF SHINGLES

    ROOF SHINGLES

    Protect your sauna from the elements and keep it looking its best for longer by protecting the wood with a shingled roof. We recommend adding these asphalt shingles to keep water off the sauna and increase the wood’s longevity. The shingles are black in color.

    Add Roof Shingles for $199

  • Wooden Heater Guard (KIP Heaters Only)

    Wooden Heater Guard (KIP Heaters Only)

    Add a layer of protection in front of your KIP Heater with this heater fence. Easy assembly, ready to install in less than 5 minutes. The wood aesthetic will complement the rest of your sauna.

    Only compatible with Harvia KIP heaters.

    Add a Wooden Heater Guard for $79

  • LED Sauna Light Bar

    LED SAUNA LIGHT BAR

    If you're looking for a way to enhance the ambiance of your sauna space, thE LED Sauna Light Bar could be just what you need. This simple and easy-to-use solution is designed to provide warm and calming indirect lighting that perfectly complements the relaxing atmosphere of a sauna. You can even integrate it into your sauna benches for a modern and stylish touch. I hope this information helps you create the perfect sauna experience!

    Add LED Light Bar for $89

  • Luxury Relaxation Pack

    LUXURY RELAXATION PACK

    Turn your sauna into the ultimate sanctuary! Our aromatherapy water fountain keeps the air in your sauna from drying out. Add a bit of Harvia's traditional Finnish sauna aromatherapy oils to your water fountain or your water bucket and let the scents of the Scandinavian forest take you away as you close your eyes. Our Finnish purpose-made sauna pillows will help you get comfortable as you relax in the scented and moist heat. Use the exfoliation brushes between your sauna rounds to keep your skin healthy and vibrant. Then, finally, when you are done your sauna take a relaxing shower with our Swedish traditional birch soap.

    Add a Luxury Relaxation Pack for $299

  • OUTDOOR SHOWER

    OUTDOOR SHOWER

    Shower off after a sauna session or clean up before hopping in the hot tub. The shower’s classic cedar look is perfect for backyards and is the perfect pairing with any of our saunas or hot tubs. With an easy install process, why not treat yourself to a shower in the great outdoors.

    Add an Outdoor Shower for $499

  • We have carefully selected the very best sauna heaters on the market to pair with our saunas. So whichever heater you choose from us, you simply can’t go wrong. All of our heaters are excellent options and will give you a wonderful sauna experience.

    The main things to consider when choosing a heater are: aesthetic preference, wifi vs manual control, drier sauna vs more humid sauna, and of course your budget.

    If you have any questions, our Product Experts would love to help. Give us a call anytime at 1800 567 8036.

  • HARVIA KIP ELECTRIC HEATER

    HARVIA KIP ELECTRIC HEATER

    The KIP family of electric sauna heaters are traditional Finnish wall-mounted heaters. They heat up fast and reach high temperatures of ~190F within one hour. This design holds up to 40 lbs of rocks, on which you can douse water to create soothing steam. The KIP creates a relatively dry heat and you should expect ~15-25% relative humidity in the sauna. The KIP comes in an attractive stainless steel exterior case that easily mounts on your sauna wall.

    Harvia is the world’s leading sauna heater manufacturer and Harvia heaters are considered the industry gold standard. Harvia was established in Finland in 1950 and has built an international reputation for exceptional quality. With a Harvia heater, you know you are getting a reliable product that you and your family can trust. All our Harvia sauna heaters are ETL certified and are manufactured in Finland.

  • HARVIA SPIRIT HEATER

    HARVIA SPIRIT HEATER

    The Harvia Spirit sauna heater has an eye-catching and modern design that combines beauty and performance in one package. The soothing curved design of the Harvia Spirit electric heater gives a natural and serene look, which will help put your mind at ease. The Harvia Spirit holds 130 lbs of gorgeous rounded sauna stones that evoke calmness. This generous amount of stones allows bathers to create incredible steam (löyly) in the room. The heater is equipped with a remote WiFi control, which makes usage easy. The Harvia Spirit is truly the spirit of your sauna!

    Harvia is the world's leading sauna heater manufacturer, and Harvia heaters are considered the industry's gold standard. Harvia was established in Finland in 1950 and has built an international reputation for exceptional quality. With a Harvia heater, you know you are getting a reliable product you and your family can trust. All our Harvia sauna heaters are ETL-certified and are manufactured in Finland.

  • HUUM DROP ELECTRIC HEATER

    HUUM DROP ELECTRIC HEATER

    The HUUM DROP is an award-winning sauna heater. Made in Estonia, this eye-catching heater is quickly emerging as a stand-out in modern sauna design. Its shape is inspired by the purest element in nature – a water drop. Its round design softens and livens up the interior of a classic sauna, giving it a touch of elegance.

    But DROP isn’t only about the looks. This compact wall-mounted heater can fit up to 120 lbs of sauna rocks. This guarantees both hot temperatures and long-lasting steam. The HUUM is fast to heat up and can reach temperatures of ~195F. The HUUM creates more steam than the KIP heater, but less than the Cilindro heater. It's somewhere in the middle in terms of its “löyly” potential.

    Every HUUM DROP heater comes delivered with HUUM sauna stones and a HUUM UKU Wi-Fi controller. This makes it a must-have heater for customers who like a modern look, combined with modern functionality.

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