The Kohler C1 Indoor Sauna Kit in Graphite Gray brings a premium sauna experience into your home with a design that is as functional as it is refined. Built with a Scandinavian spruce interior, a contemporary Graphite Gray exterior, and a freestanding FERO electric heater, this kit is engineered for consistent, efficient heat in a space that fits your lifestyle — whether installed as a freestanding focal point or tucked into an alcove. Available in 2-, 3-, and 5-person configurations, it adapts to a range of spaces and household needs.
Why Customers Choose This Kit
- Authentic sauna heat from a dedicated FERO electric heater with sauna stones
- Flexible installation — freestanding or alcove — to fit a variety of room layouts
- Aerotherm ventilation system maintains fresh air circulation throughout each session
- Dual thermostatic controls for precise, consistent temperature management
- Premium Scandinavian spruce interior with obeche wood benches and backrest
- Heavy-duty 2.1-inch mineral wool insulation for efficient heat retention
- Available in 2-, 3-, and 5-person capacities to match your space and household
Product Highlights
Premium Interior & Exterior Construction
The cabin is built with tongue-and-groove joinery for a clean, seamless finish. The interior features Scandinavian spruce, while the exterior is finished in a modern Graphite Gray. Doors are 0.3-inch tempered glass with beech wood handles that stay cool to the touch.
FERO Electric Heater with Sauna Stones
The freestanding FERO electric heater delivers traditional sauna heat. An external digital display controls temperature, session duration, and lighting, while a dual thermostatic system maintains precise heat regulation throughout your session.
Aerotherm Ventilation System
The integrated Aerotherm ventilation system actively circulates fresh air during use, supporting a comfortable and oxygen-rich environment inside the cabin.
Obeche Wood Benches & Warm White Lighting
Handcrafted obeche wood benches and a matching backrest provide a comfortable seating surface. Warm white indirect lighting (2700K) creates a calm, inviting atmosphere.
High-Efficiency Insulation
2.1-inch mineral wool insulation with rubber seals locks in heat effectively, reducing warm-up time and maintaining a stable temperature throughout your session.
Flexible Sizing & Installation
Choose from 2-, 3-, or 5-person configurations. The kit supports both freestanding and alcove installations, making it compatible with a wide range of indoor spaces.
Specifications
- Brand: Kohler
- Model Series: C1 Indoor Sauna Kit
- Exterior Finish: Graphite Gray
- Interior Material: Scandinavian Spruce
- Bench Material: Obeche Wood
- Door Glass: 0.3-inch Tempered Glass
- Door Handle: Beech Wood (cool-touch)
- Heater Type: FERO Electric Heater with Sauna Stones
- Heater Controls: External Digital Display; Dual Thermostatic System
- Ventilation: Aerotherm System
- Insulation: 2.1-inch Mineral Wool with Rubber Seals
- Lighting: 2700K Warm White Indirect LED
- Capacity Options: Up to 2 People | Up to 3 People | Up to 5 People
- Installation Type: Freestanding or Alcove
- Flooring Options: No Floor | Full Floor
- Upgrade Option: No Upgrade | With Professional Installation
- Construction Method: Tongue-and-Groove Joinery
Ideal For
- Homeowners looking to add a dedicated sauna space indoors
- Households of 2–5 people who want a shared wellness space
- Spaces with an existing alcove or open-plan area suitable for a freestanding unit
- Those who prefer a traditional electric sauna with stone-heated air
- Buyers seeking a premium, design-forward sauna with professional installation available
Important Information
- Electrical Requirements: This unit requires a dedicated electrical circuit. Consult a licensed electrician before installation to confirm your home's wiring meets the heater's specifications.
- Installation: Professional installation is available as an upgrade option at checkout. DIY installation should only be performed by individuals with appropriate experience and in compliance with local building codes.
- Ventilation: Ensure the installation area has adequate ventilation as outlined in the product manual. Do not block air intake or exhaust points.
- Usage: Always read the full user manual before first use. Follow all safety guidelines regarding session duration, temperature limits, and heater operation.
- Warranty: This product is covered by the Kohler manufacturer warranty. Refer to the warranty documentation for full terms and conditions.
Frequently Asked Questions
What capacity options are available?
This kit is available in three configurations: up to 2 people, up to 3 people, and up to 5 people. Select your preferred capacity from the variant options above.
Can this sauna be installed as both freestanding and alcove?
Yes. The Kohler C1 kit is designed to support both freestanding and alcove installations, giving you flexibility in how and where you place it in your home.
Is professional installation included?
Professional installation is available as an optional upgrade. You can select "W/ Installation" under the Upgrade Option when configuring your order.
What type of heater does this sauna use?
The kit includes a freestanding FERO electric heater with sauna stones, which delivers traditional sauna-style heat. Temperature and session duration are managed via an external digital display.
Does the kit include flooring?
Flooring is optional. You can choose between "No Floor" and "Full Floor" when configuring your order, depending on your installation preference.
What is the shipping timeframe?
Orders are packed and shipped within 1–3 business days and typically delivered within 5–10 business days. Free shipping is available within the contiguous USA.
Where can I find the user manual and spec sheets?
Spec sheets and user manuals for the 2-, 3-, and 5-person configurations, along with the Kohler C1 Readiness Guide and Warranty document, are available from Kohler directly or can be requested through our support team.
The Kohler C1 Indoor Sauna Kit is a well-built, thoughtfully designed addition to any home. If you're ready to invest in a quality indoor sauna with flexible sizing and installation options, this kit is worth a close look. Configure your preferred capacity, flooring, and installation option above, and place your order with confidence — free USA shipping included.
This product is intended for general wellness use. It is not a medical device and is not intended to diagnose, treat, cure, or prevent any medical condition. Consult a qualified healthcare professional before use if you have any health concerns or pre-existing conditions.