3-person Indoor Sauna | Kohler C1 Indoor Sauna Kit, Graphite Grey
- $21,590.00
$25,400.00- $21,590.00
- Unit price
- per
Vendor: Kohler
3-person Indoor Sauna | Kohler C1 Indoor Sauna Kit, Graphite Grey
Vendor: Kohler
3-person Indoor Sauna | Kohler C1 Indoor Sauna Kit, Graphite Grey
Kohler C1 · Indoor Sauna · Graphite Grey · 3 Person
More space, the same authentic sauna performance. The Kohler C1 3 Person pairs a warm Scandinavian spruce interior with a bold Graphite Grey exterior — ideal for sharing with others or stretching out solo in genuine comfort.
At a glance
3-Person Capacity
Graphite Grey Exterior
4.5kW FERO Electric Sauna Heater
External Digital Control Panel
Freestanding or Alcove Install
Graphite Grey Exterior Finish
The bold Graphite Grey exterior gives this C1 a confident, contemporary look that integrates naturally into modern home spaces — while the warm spruce interior preserves the authentic sauna atmosphere inside. Style-forward without sacrificing tradition.
Relaxation, Elevated
Designed for Three — Perfect for Solo Unwinding Too
The spacious interior comfortably accommodates up to three people, with more room to stretch out and enjoy a deeper, more restorative session than a standard 2-person cabin allows. An obeche wood bench and backrest provide natural comfort throughout, while 2700K indirect lighting creates a soft, calming ambiance.
Tempered glass panels add a genuine sense of openness, and advanced insulation ensures heat is retained consistently from the moment you begin right through to the end of your session.
Spacious 3-person capacity — stretch out or share
Obeche wood bench and ergonomic backrest
2700K warm white indirect lighting
Tempered glass door and windows
3
Person
capacity
capacity
More space to unwind, the same precision heat. The FERO heater delivers steady, even warmth throughout the larger cabin, while dual thermostatic controls ensure every session is safe, stable, and repeatable — however many people are inside.
Kohler FERO Electric Heater System
Traditional Heat, Modern Precision
FERO Electric Heater
The freestanding Kohler FERO heater delivers authentic, even heat across the full 3-person interior. Sauna stones and a protective heater guard are included for optimal performance and safety in every session.
Digital Control Panel
An external digital control panel lets you manage temperature, session timing, and backrest lighting before stepping inside. Dual thermostatic controls deliver reliable, repeatable sessions every time.
Aerotherm Ventilation
The Aerotherm ventilation system maintains balanced airflow throughout — ensuring an adequate supply of fresh oxygen across the larger cabin for a comfortable, breathable environment from start to finish.
Engineered for Efficiency
Efficient Heat. Consistent Performance.
2.1" mineral wool insulation throughout the walls ensures the larger 3-person cabin heats efficiently and retains temperature reliably — so you're not waiting any longer despite the extra space.
Rubber seals around the door and frame keep heat inside where it belongs, while the Aerotherm ventilation system circulates fresh air without sacrificing temperature stability. Together, these systems create a sauna environment that heats quickly and stays consistent throughout use.
2.1"
Mineral wool
insulation
insulation
Construction & Materials
Spruce Interior, Graphite Exterior
Scandinavian spruce lines the interior for a warm, natural sauna feel. The Graphite Grey exterior delivers a bold, contemporary look that integrates seamlessly into modern home spaces without compromising the traditional atmosphere inside.
Tongue-and-Groove Finish
Seamless tongue-and-groove construction throughout creates tight, precise joints that improve structural integrity, enhance heat retention, and deliver a premium interior finish visible from every angle inside the cabin.
Flexible Installation
Designed for both freestanding and alcove installation — the C1 adapts to your home rather than requiring structural changes around it. Either way, the result is a clean, considered finish that looks purpose-built for the space.
Key Features
3-Person Capacity
Spacious enough for three, comfortable enough to enjoy solo — more room to stretch out and relax properly.
Graphite Grey Exterior
Bold, contemporary Graphite Grey finish — a modern statement that complements any interior design.
Scandinavian Spruce Interior
Natural spruce walls inside — warm, beautiful, and built to perform in high-heat environments.
FERO Heater with Sauna Stones
Freestanding electric heater with stones and protective guard for authentic, even heat.
Obeche Bench & Backrest
Ergonomic obeche wood seating — smooth, warm, and comfortable across the full session.
2700K Ambient Lighting
Indirect warm white lighting creates a calming, spa-quality atmosphere throughout the cabin.
Digital Control Panel
External panel for temperature, session time, and backrest lighting — full control before you step in.
Dual Thermostatic Control
Two thermostatic controls maintain safe, stable heat — consistent results every time.
Aerotherm Ventilation
Active airflow system ensures adequate oxygen supply and air exchange throughout the larger cabin.
Mineral Wool Insulation
2.1" mineral wool for superior heat retention and energy-efficient performance across the larger space.
Cool-Touch Beech Wood Handles
Natural beech wood handles stay cool to the touch — safe and comfortable mid-session.
Tongue-and-Groove Construction
Seamless, precision joinery throughout — tight, refined, and premium from every angle.
Specifications
Capacity
3persons
Spacious 3-person cabin
Insulation
2.1in
Mineral wool (5.4 cm)
Glass
0.3in
Tempered (0.8 cm)
Lighting
2700K
Warm white indirect
Heater
FEROelectric
With sauna stones
Exterior
GraphiteGrey
Contemporary finish
Ventilation
Aerotherm
Active airflow system
Installation
Free/Alcove
Flexible placement
Key Features
Premium Scandinavian spruce interior and Graphite Grey exterior walls
Freestanding 4.5kW FERO electric sauna heater for a traditional sauna experience
Warm white indirect lighting for a gentle and relaxing atmosphere
Dual thermostatic control for a safe, consistent, and repeatable sauna session
Digital display controls temperature, time, and backrest lighting
Aerotherm ventilation system ensures adequate supply of oxygen and air exchange
2.1" (5.4 cm) thick mineral wool insulation between walls for heat retention
0.3" (0.8 cm) tempered glass door and windows
Beech wood door handles remain cool to the touch
Tongue-and-groove walls and connections for a seamless appearance
What's included
Sauna Kit
Front Frame Panels
Side Wall Panels
Rear Wall Panels
Ceiling Elements
Bottom Frame
Backrest
Benches
Electric Sauna Heater
Heater Guard
Sauna Stones
Control Panel
Lighting
Installation Hardware
Installation & Operation Manual
Also included
Accessories
Wall-Mounted Thermometer
Beech 20-Minute Hourglass Sand Timer
Headrest
Stool
5-Year Limited Warranty
Consumer use — full structural coverage included.
| Dimensions & Capacity | |
|---|---|
| Overall Dimensions | 77.4"W x 55.7"D x 86.4"H (196.7 x 141.5 x 219.5 cm) |
| Capacity | Up to 3 people |
| Materials & Finish | |
| Construction | Scandinavian Spruce |
| Seating | Obeche Wood |
| Door | Tempered Glass |
| Windows | Tempered Glass |
| Door Handle | Beech Wood |
| Heater Safety Rail | Obeche Wood |
| Finish | Graphite Grey |
| Installation | |
| Installation Type | Freestanding or Alcove |
| Floor Type | Spruce or No Floor |
| Wall Clearance | 2" (5 cm) |
| Ceiling Clearance | 8' (2.4 m) |
| Electrical | |
| Heater Fuel | Electric |
| Voltage | 220–240V |
| Frequency | 50/60 Hz |
| Kilowatt Rating | 4.5 kW |
| Amperage | 30A |
| Outlet | NEMA 6-30P |
| Cord Length | 9' 10" (2.9 m) |
| Cord Location | Top Rear |
| Interior Dimensions | |
| Width | 70.9" (180.1 cm) |
| Depth | 47.3" (120.1 cm) |
| Height | 77.4" (196.6 cm) |
| Weight | |
| Weight (No Floor) | 760.7 lbs (345.1 kg) |
| Shipping Weight (No Floor) | 1047.4 lbs (475.1 kg) |
| Weight (With Floor) | 786.7 lbs (356.8 kg) |
| Shipping Weight (With Floor) | 1073.34 lbs (486.9 kg) |
Download Spec Sheets:
Order Confirmation
- Upon placing your order, you will receive a confirmation email. This means we have received your order in our system and pre-authorized your credit card for the purchase.
- Orders are processed between Monday – Friday.
- 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 email or phone with the choice of waiting or cancelling for a 100% refund.
- If your item(s) are available for immediate shipment (within 5 business days), we will process the charges and submit the order for shipment.
- Signature is required for delivery of items for loss-prevention purposes.
Shipping Times
- We promise to do our best to get your order to you as soon as possible. We provide estimated shipping times on each product page.
- Once an order is dispatched, delivery is approximately 5 – 7 days.
- Order delays have proven to be unavoidable and outside of Biohacker Direct's control. While this might be frustrating, we ask you to please be patient and understanding with us in these tough times. We thank you for your business and appreciate your patience.
Delivery
- This exceptional Sauna Sanctuary requires delivery by a special appointment, and on a wooden pallet.
- The driver is responsible for "curbside delivery only" and will lower the items to ground level.
- Prior to shipping this product, we often contact customers to share shipment details and discuss any extenuating delivery circumstances that may complicate or cause additional delivery expenses.
- Our goal is to ensure your project's success.
Customers are responsible for all shipping costs associated with returns or exchanges.
Please note that not all products are eligible for return once they have shipped. As we source many of our products directly from the manufacturer, returns are subject to each manufacturer’s return policy. If a manufacturer does not allow a product to be returned, we are unfortunately unable to accept a return for that item. Because policies vary by brand and product, we recommend contacting us in advance if you would like confirmation on the return eligibility of a specific item.
Due to significantly increasing LTL and freight shipping costs, all standard returns are subject to a 25% cancellation/restocking fee, in addition to return shipping costs. If you are exchanging your product for another item, we may be able to assist with some of the associated costs depending on the product.
The seller reserves the right to withhold any refund until the returned goods have been received, inspected, and confirmed to be free from damage. Refunds will be processed within 5 business days after the product has been returned to the warehouse and successfully inspected.
Kohler Co. warrants the KOHLER Brand saunas (“Product”) to be free of defects in material and workmanship during normal residential usage for five (5) years from the date of purchase or the date of delivery (if later than the date of purchase) as long as the original purchaser owns the Product. The warranty applies to Product purchased and installed in
the United States and Canada.
Warranty is void if the Product is installed in a commercial application.
Kohler Co. warrants all KOHLER Brand sauna accessories included with the sauna or purchased separately to be free of defects in material and workmanship during normal residential use for one (1) year from the date of purchase or the date of delivery (if later than the date of purchase) as long as the original purchaser owns the Product, with all other terms of
this warranty applying except duration.
Kohler Co. will, at its election, repair or replace defective Product that is covered by this warranty where Kohler Co. inspection discloses any such defects occurring in normal usage. Damage caused by accident, misuse, or abuse is not covered by this warranty.
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