5-person Indoor Sauna | Kohler C1 Indoor Sauna Kit, Graphite Grey
- $25,330.00
$29,800.00- $25,330.00
- Unit price
- per
Vendor: Kohler
5-person Indoor Sauna | Kohler C1 Indoor Sauna Kit, Graphite Grey
Vendor: Kohler
5-person Indoor Sauna | Kohler C1 Indoor Sauna Kit, Graphite Grey
Kohler C1 · Indoor Sauna · Graphite Grey · 5 Person
Built for those who want to create a true wellness space at home. The Kohler C1 5 Person pairs a natural Scandinavian spruce interior with a sleek Graphite Grey exterior — generous capacity, premium materials, and authentic sauna performance at scale.
At a glance
5-Person Capacity
Graphite Grey Exterior
9kW FERO Electric Sauna Heater
External Digital Control Panel
Freestanding or Alcove Install
Graphite Grey Exterior Finish
The Graphite Grey exterior makes a bold, confident statement in any space — a contemporary finish that sits comfortably alongside modern interiors while the warm spruce inside preserves everything that makes a traditional sauna feel genuine.
Room to Relax Together
Five Users. One Shared Ritual.
With space for up to five, the C1 transforms the sauna session into a shared wellness ritual — ideal for families, social use, or anyone who wants a more expansive experience. The interior layout is designed to maximise comfort throughout, with obeche wood seating and supportive backrests built for extended sessions.
Soft 2700K indirect lighting enhances the atmosphere, and tempered glass elements maintain an open, contemporary feel that makes the generous interior feel even more spacious.
Generous 5-person capacity for families and groups
Obeche wood benches and ergonomic backrests
2700K warm ambient indirect lighting
Tempered glass door and windows
5
Person
capacity
capacity
Consistent, enveloping heat across a larger space — the FERO heater is sized to perform at 5-person scale, delivering the same steady warmth throughout the cabin that defines the traditional sauna experience, regardless of how many people are inside.
Kohler FERO Electric Heater System
Powerful Heat, Effortless Control
FERO Electric Heater
The freestanding Kohler FERO heater delivers consistent, enveloping heat across the full 5-person interior. Sauna stones and a heater guard are included for optimal performance and safety — even during longer, multi-user sessions.
Digital Control Panel
The external digital control panel provides simple, intuitive control over temperature, session duration, and lighting ambience — all from outside the cabin. Dual thermostatic regulation ensures stability throughout, even at full capacity.
Aerotherm Ventilation
At 5-person capacity, air quality matters more than ever. The Aerotherm ventilation system ensures continuous, balanced airflow and adequate oxygen supply throughout — keeping the environment comfortable and breathable for everyone inside.
Built for Consistency at Scale
Efficient Performance Across a Larger Space
Even at 5-person scale, the C1 maintains exceptional efficiency. 2.1" high-density mineral wool insulation throughout the walls ensures the larger cabin heats effectively and retains temperature reliably — so performance doesn't suffer just because the space is bigger.
Precision rubber sealing minimises heat loss through the door and frame, while the Aerotherm ventilation system circulates fresh air continuously without destabilising internal temperature. The result is a sauna that performs reliably, session after session, at full capacity.
2.1"
Mineral wool
insulation
insulation
Construction & Materials
Spruce Interior, Graphite Exterior
Scandinavian spruce lines the interior for a warm, natural sauna atmosphere, while the Graphite Grey exterior makes a bold contemporary statement. The combination gives the C1 5 Person a premium presence that commands attention in any home setting.
Premium Tongue-and-Groove
Tongue-and-groove construction throughout ensures tight, seamless joints across the full surface area of the larger cabin — maintaining structural integrity, heat retention, and a refined interior finish at every point of the build.
Flexible Installation
Despite its generous footprint, the C1 5 Person is designed for both freestanding and alcove installation — adapting to a wide range of home spaces. Either configuration delivers a purposeful, integrated finish that looks built to be there.
Key Features
5-Person Capacity
Generous space for families, guests, or anyone who wants room to truly unwind — without compromise.
Graphite Grey Exterior
Bold, contemporary Graphite Grey exterior — a premium finish that makes a confident statement in any space.
Scandinavian Spruce Interior
Natural spruce throughout the interior — warm, beautiful, and built to perform across the larger cabin.
FERO Heater with Sauna Stones
Freestanding electric heater with stones and safety guard — consistent, enveloping heat at full capacity.
Obeche Benches & Backrests
Ergonomic obeche wood seating for all five users — smooth, warm, and built for extended sessions.
2700K Ambient Lighting
Warm white indirect lighting creates a calming, spa-quality atmosphere across the full cabin interior.
Digital Control Panel
External panel for temperature, session time, and lighting — full system control before you step in.
Dual Thermostatic Control
Two thermostatic controls maintain safe, stable heat stability — even during longer multi-user sessions.
Aerotherm Ventilation
Continuous airflow and oxygen supply — essential at 5-person capacity for a comfortable, breathable environment.
Mineral Wool Insulation
2.1" high-density mineral wool ensures the larger cabin heats efficiently and retains temperature reliably.
Cool-Touch Beech Wood Handles
Natural beech wood handles stay cool to the touch — safe and comfortable for all users, mid-session.
Premium Tongue-and-Groove
Precision joinery across the full cabin — seamless, tight, and refined at every point of the build.
Specifications
Capacity
5persons
Generous 5-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 9kW 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 | 81.4"W x 79.3"D x 86.4"H (206.7 x 201.4 x 219.5 cm) |
| Capacity | Up to 5 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 | 9 kW |
| Amperage | 50A |
| Outlet | NEMA 6-50P |
| Cord Length | 9' 10" (2.9 m) |
| Cord Location | Top Rear |
| Interior Dimensions | |
| Width | 74.8" (190 cm) |
| Depth | 70.9" (180.1 cm) |
| Height | 77.4" (196.6 cm) |
| Weight | |
| Weight (No Floor) | 1124.6 lbs (510.1 kg) |
| Shipping Weight (No Floor) | 1499.4 lbs (680.1 kg) |
| Weight (With Floor) | 1164.8 lbs (528.3 kg) |
| Shipping Weight (With Floor) | 1539.6 lbs (698.4 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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