








Kohler C1 Indoor Sauna – Graphite Grey (Up to 5 Persons)

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- Specifications
- Available Sizes & Electrical Requirements
- Description
- Features
- What’s Included
- Documentation
- Shipping & Delivery
| Specification | Details |
|---|---|
| Brand | Kohler |
| Model | C1 |
| Series | Kohler Indoor Sauna Collection |
| Capacity | 2–5 Persons (Size Dependent) |
| Interior Material | Premium Scandinavian Spruce |
| Exterior Finish | Graphite Grey |
| Bench & Backrest Material | Obeche Wood |
| Door Material | Tempered Glass |
| Window Material | Tempered Glass |
| Door Handle Material | Beech Wood |
| Wall Construction | Tongue-and-Groove Panels |
| Insulation | 2.1" (5.4 cm) Mineral Wool |
| Lighting System | 2700K Warm White Indirect Backrest Lighting |
| Ventilation System | Aerotherm Ventilation System |
| Installation Method | Freestanding or Alcove |
| Floor Options | Full Spruce Floor or No Floor |
| Heater Included | Yes – FERO Electric Sauna Heater |
| Heater Fuel Type | Electric |
| Heater Voltage | 220–240V |
| Heater Frequency | 50/60 Hz |
| Control Panel | External Digital Control Panel |
| Clearance – Wall | 2" (5 cm) |
| Clearance – Ceiling | 8' (2.4 m) |
| Warranty | 5-Year Limited Warranty (Consumer Use) |
C1 – 2 Person
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Exterior Dimensions: 65.6"W × 45.9"D × 83.5"H
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Interior Dimensions: 59.1"W × 39.4"D × 77.4"H
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Heater Output: 4.5kW
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Electrical: 240V / 30A
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Outlet: NEMA 6-30P
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Weight (No Floor): 694.6 lbs
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Weight (With Floor): 713.1 lbs
C1 – 3 Person
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Exterior Dimensions: 77.4"W × 53.8"D × 83.5"H
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Interior Dimensions: 70.9"W × 47.3"D × 77.4"H
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Heater Output: 4.5kW
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Electrical: 240V / 30A
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Outlet: NEMA 6-30P
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Weight (No Floor): 760.7 lbs
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Weight (With Floor): 786.7 lbs
C1 – 5 Person
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Exterior Dimensions: 81.4"W × 77.4"D × 83.5"H
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Interior Dimensions: 74.8"W × 70.9"D × 77.4"H
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Heater Output: 9kW
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Electrical: 240V / 50A
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Outlet: NEMA 6-50P
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Weight (No Floor): 1,124.6 lbs
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Weight (With Floor): 1,164.8 lbs
The Kohler C1 Indoor Sauna is a refined, modular indoor sauna designed to deliver professional-grade performance in residential spaces. Finished in Graphite Grey, the C1 blends Scandinavian craftsmanship with modern architectural styling, making it ideal for home gyms, wellness rooms, and luxury interiors.
Constructed from premium Scandinavian spruce, the interior creates a warm, natural sauna environment that promotes consistent heat and long-term durability. Ergonomic obeche wood benches and a matching backrest are paired with 2700K warm white indirect lighting, creating a calm, spa-like atmosphere that enhances relaxation during every session.
The C1 is engineered for freestanding or alcove installation, offering exceptional flexibility for interior layouts. Mineral wool insulation, tempered glass panels, and tight rubber seals ensure excellent heat retention and energy efficiency.
Each unit includes a FERO electric sauna heater, sauna stones, and a heater guard, delivering even heat distribution and a traditional sauna experience. An externally mounted digital control panel allows precise control of temperature, session time, and lighting.
Available in multiple sizes and configurable with optional flooring, roof kits, and upgraded delivery services, the Kohler C1 Indoor Sauna adapts seamlessly to your space while maintaining Kohler’s signature standards of quality, safety, and design.
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Premium Scandinavian spruce interior for durability and heat performance
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Graphite Grey exterior for modern, architectural styling
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Freestanding or alcove installation flexibility
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FERO electric sauna heater with included stones and safety guard
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Warm white indirect backrest lighting (2700K) for a relaxing ambiance
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External digital control panel for temperature, time, and lighting
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Aerotherm ventilation system for proper airflow and oxygen exchange
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Mineral wool insulation for improved heat retention
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Tempered glass door and windows for strength and thermal efficiency
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Cool-touch beech wood door handles
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Modular sizing options to fit a wide range of indoor spaces
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Front Frame Panels
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Side Wall Panels
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Rear Wall Panels
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Ceiling Elements
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Bottom Frame
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Obeche Wood Benches
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Obeche Wood Backrest
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FERO Electric Sauna Heater
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Heater Guard
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Sauna Stones
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External Digital Control Panel
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Interior Lighting System
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Installation Hardware
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Installation & Operation Manual
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Wall-Mounted Thermometer
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Beech Wood 20-Minute Hourglass
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Headrest
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Stool
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5-Year Limited Warranty (Consumer Use)
Optional Add-Ons (Configured via Product Options)
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Full Spruce Floor Kit
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White Glove Delivery Service Upgrade
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C1 Indoor Sauna Roof Kit (Size-Specific: 2-Person, 3-Person, or 5-Person)
Manual Links:
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Kohler C1 Indoor 2 Person IOM Owners Manual
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Kohler C1 Indoor 3 Person IOM Owners Manual
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Kohler C1 Indoor 5 Person IOM Owners Manual
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Kohler C1 Indoor 2 Person Sauna Spec Sheet 39963
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Kohler C1 Indoor 3 Person Sauna Spec Sheet 39951
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Kohler C1 Indoor 5 Person Sauna Spec Sheet 39950
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Kohler C1 Indoor Sauna Readiness Guide
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Kohler Sauna Warranty
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Included Shipping: Contiguous United States
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Canada: Flat-rate shipping available
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Delivery Type: Curbside delivery by scheduled appointment
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Packaging: Delivered on a wooden pallet
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Optional Upgrade: White Glove Delivery Service available at checkout
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