Redwood Outdoors Barrel - 6 Person Sauna

Harvia KIP:

A traditional Finnish wall-mounted heater with dual manual controls, including a delay timer that can be set up to 8 hours in advance. Its split-face stones deliver gentle, classic bursts of steam.

Wattage: 6kW & 8kW

Voltage: 240V

Amps: 30A (6kW) & 40A (8kW)

Wi-Fi: Optional upgrade with the 8kW

Mounting Type: Wall mounted

Rock Capacity: 44 lbs.

Harvia Spirit: 

A sleek, modern heater with a curved design and Wi-Fi control. Its open-stone design holds a generous volume of stones, delivering soft, even heat and rich steam.

Wattage: 6kW & 8kW

Voltage: 240V

Amps: 30A (6kW) & 40A (8kW)

Wi-Fi: Standard

Mounting Type: Wall mounted

Rock Capacity: 99 lbs.

About Our Heat-Treated Lumber

Made of Hemlock

Hemlock is an exceptional material for building saunas; highly regarded for being strong, durable, and moisture resistant. In hot environments, hemlock remains cooler to the touch and retains heat more effectively than cedar. All the hemlock used in our saunas is sourced from responsibly managed forests in Canada that adhere to strict environmental and social standards.  

Heat-Treated for Exceptional Durability 

Our hemlock undergoes a specialized thermal modification process to increase durability. This three-phase process begins with kiln-drying the wood, followed by heating it to temperatures above 400°F (204°C), finished by slowly cooling through a controlled steaming process. This procedure changes the wood on a cellular level, compressing its internal channels to create a denser structure. The result is a stronger material that is better protected against damage from environmental factors such as weather and insects. The natural moisture resistance of hemlock is also enhanced, minimizing swelling and warping over time.  

Heat-treated hemlock lasts longer with minimal maintenance needs, so you can enjoy your sauna for many years to come.

All Natural, Built to Last

Our thermal modification process relies solely on heat and water—no chemicals involved. This technique increases the lifespan of your wood naturally, without the use of any additives. 

Minimal Maintenance

Exterior Sauna Maintenance

Heat-treated hemlock is highly durable; no stain or sealer is required to maintain your sauna’s structural integrity. Left untreated, the wood will naturally weather to a rustic grey over time due to sun exposure, without losing its strength.

A water-based stain can be used to maintain or change your sauna’s exterior color. Note: stains should never be used inside the sauna.

Interior Sauna Maintenance

Our heat-treated hemlock is built to withstand the hot and humid sauna environment; no sealers are required on the interior walls. In high-traffic areas such as benches and floors, applying a protective treatment is recommended to guard against dirt, sweat, and body oils.

Recommended interior treatment options include:

• Sauna grade paraffin oil – only a light coating on the benches and floor is needed, preserving the deep natural color of the wood. We recommend sauna safe Harvia Paraffin Oil. 
  Note: only use sauna-grade paraffin oil.
• Supi Sauna Wax – a nontoxic treatment safe for walls, floor, ceiling and benches; Supi Sauna Wax is available in three different finishes: clear, black, and white. 
  

Sauna Heater Maintenance

Sauna heaters require little maintenance. Simply cleaning the heater and taking care of the rocks will keep your heater running in peak condition for years to come. 

To maintain your heater, follow these easy steps: 

• Periodically wipe the exterior of the heater with a soft cloth and use a mild cleanser to remove any water spots if needed—we recommend Harvias Heater Cleanser.
  
• Every 6 months, restack and inspect your heater stones. As you pull out the stones, look for cracks, chips and excessive wear. Remove and replace any damaged stones. 
  Rinse the stones with warm water, lightly scrubbing any that might have slight calcium build up, letting them air dry before restacking in the heater.  
  
• After 1 to 2 years, replace your heater stones. For heaters that use split-face stones, upgraded options are available, like vulcanite stones for better steam or the longer-lasting elite pro stones.

What to Expect

Redwood Outdoors saunas and cold plunge tubs are shipped using freight delivery to ensure safe, secure transport from our warehouse to your home. Below is everything you need to know about shipping and what to expect on your delivery day.

How Redwood Outdoors Products are Shipped

Our saunas and cold plunge tubs are shipped in durable wooden crates designed to protect the product during transit. 

• With the shipment of a sauna, the heater, rocks and accessories will either arrive in a box strapped to the top of your crate or arrive separately.

We partner with multiple trusted freight carriers to ensure your order arrives safely and efficiently at your curbside. 

• Once your shipment leaves our warehouse, you’ll receive an email with a tracking number and link to follow your delivery.  

If you’ve ordered multiple large products—such as a sauna and a cold plunge—they may arrive in separate shipments.  

Freight Delivery 

Our shipments are delivered by a large freight truck, typically equipped with a liftgate. This allows the carrier to lower the crate to ground level upon arrival.  

• If your delivery location has limited access for large trucks—such as steep, unpaved, gated, or restricted roads—please contact our customer service team before shipment so we can review access requirements and help you prepare.  

Delivery Day

Your shipment is on the way, here's how to prepare. 

Once your order arrives at the carrier’s local depot, they will contact you to schedule a delivery appointment. 

• Appointments are typically scheduled within 2–3 business days of arrival at the depot.  
• Please ensure that someone is available to receive and sign for the delivery when it arrives at your home. 
  • If your heater is shipped separately, a signature will be required for that shipment as well.  

All freight shipments are curbside delivery, meaning the crate is placed at the end of your driveway or nearest accessible location.  

• For liability reasons, freight carriers are unable to move shipments beyond the curb or into backyards, garages, or other areas of the property.  If you need help relocating your crate after delivery, we recommend arranging assistance in advance.

Support & Warranty

Questions? We Have Answers.

At Redwood Outdoors, when you call, a real person is here to help. Our US-based, knowledgeable support specialists are ready to answer any question, big or small. Whether you need advice about how to set up your new sauna or how to care for your sauna after it is built, our team of experts has the answers.

Warranty

Our wooden saunas are backed by a 1-year limited warranty. For Harvia sauna heaters, we offer a 1-year warranty on heating elements and a 5-year limited warranty on other components for residential use. For Homecraft sauna heaters, we offer a 2-year limited warranty for residential use.

Assembly & Manuals

Easy DIY Sauna Installation

Designed for Hassle Free Assembly

Our saunas are built for easy DIY installation, with no cutting, modifications, or special skills required. Each kit includes pre cut, interlocking panels that fit together precisely, allowing you to assemble your sauna in just a few hours using basic construction skills.

Every sauna ships with a printed assembly manual inside the crate, tailored specifically to your model. If you’d like to preview the process ahead of time, digital assembly manuals and assembly videos are available online here.

Because our sauna designs continue to evolve, always follow the printed instructions included with your sauna during installation.

Before You Begin Your Sauna Installation

Review Instructions and Gather Supplies

Before starting your sauna build, carefully read through your assembly manual and gather all necessary supplies.

Recommended Tools

Sauna assembly requires common household tools, including:

• Power drill with T20 ("torx") bit
  
• Rubber mallet
  
• Hammer
  
• Two adjustable wrenches
  
• Measuring tape
  
• Level

Choose the Right Location

Select a stable, level location with sufficient clearance for assembly and access. Be sure the area allows for proper drainage and is within reach of your electrical connection. Thoughtful site selection helps ensure safe operation and long term durability.

Check Local Building Requirements

Depending on your location, a building permit or HOA approval may be required. Always check local regulations before starting installation.

Hire an Electrician

A trusted licensed electrician must be hired to install your sauna heater. Sauna heaters do not plug into standard outlets and must be hardwired to your electrical panel.

Build a Solid Foundation

A solid, level base is essential for the longevity and performance of your sauna.

Recommended foundation types include:

• Concrete pad or concrete footings under each sauna cradle
  
• Solid deck or reinforced platform
  
• Compacted gravel base
  
• Level stone or paver patio

The foundation must support the full weight of the sauna and all occupants.

Assembling Your Sauna

Preparing for an Efficient Install

Before assembling:

• Read through the entire assembly manual and watch the assembly video
  
• Verify all pieces in the sauna kit using the parts list included in the manual
  
• Lay out the pieces in sections by the steps listed in the manual to streamline the assembly process

Putting the Sauna Together Piece by Piece

The following is a general overview of the sauna building process. Our sauna designs are always evolving, so please refer to your sauna assembly manual when you are ready to build.

Unwind in Style

Our saunas and cold plunges bring spa-like luxury to your backyard.

Heritage & Expertise

Inspired by Finnish sauna traditions, designed for modern wellness.

Seamless Shopping Experience

Effortless online ordering, backed by knowledgeable support from purchase to delivery.