KOHLER C1 Indoor Sauna in Scandinavian Spruce
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The KOHLER C1 Indoor Sauna in Scandinavian Spruce is a fully engineered indoor sauna kit designed for freestanding or alcove installation. Constructed with premium Scandinavian spruce interior and exterior wall panels and tempered glass door and windows, the C1 creates a bright, warm, and welcoming retreat in any dedicated wellness room, luxury bathroom, or home gym. Available in Small (up to 2 people), Medium (up to 3 people), and Large (up to 5 people), the C1 arrives as a complete system that includes a freestanding FERO electric sauna heater, sauna stones, heater guard, indirect lighting, accessories, and an external digital control panel.
Thick insulated wall construction, mineral wool insulation, and tight rubber seals help the C1 retain heat session after session. Inside, the solid obeche wood bench and matching backrest with warm 2700K indirect lighting create a relaxing ambiance that feels like a high-end European spa, right at home.
Key Features
- Complete indoor sauna package with Scandinavian spruce interior and exterior wall panels
- Three sizes to fit your space and household: Small (up to 2 users), Medium (up to 3), Large (up to 5)
- Freestanding FERO electric sauna heater included with sauna stones and heater guard for a traditional sauna experience
- Warm white 2700K indirect LED lighting behind the backrest for a soft, relaxing glow
- Digital external control panel controls temperature, session time, and backrest lighting
- Dual thermostatic control for safe, consistent, repeatable sauna sessions
- Insulated wall construction with mineral wool and rubber seals for excellent heat retention
- Aerotherm ventilation system supports fresh air exchange and even heat distribution
- Freestanding or alcove installation for flexible layout options
- Floor and no floor models, plus optional installation service (where available)
Available Sizes and Variants
Select your KOHLER C1 Indoor Sauna in Scandinavian Spruce by size and floor option. Each model is available in a standard “sauna only” configuration or a “sauna with installation” option (where offered):
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Small – up to 2 people
- Model, No Floor: C1 Two-person Indoor Sauna, Scandinavian Spruce – K-38440-0FNC-SPS
- Model, With Floor: C1 Two-person Indoor Sauna with Floor, Scandinavian Spruce – K-38440-1FNC-SPS
- Variants: Sauna only, or Sauna with installation (for each floor option, where available)
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Medium – up to 3 people
- Model, No Floor: C1 Three-person Indoor Sauna, Scandinavian Spruce – K-38441-0FNC-SPS
- Model, With Floor: C1 Three-person Indoor Sauna with Floor, Scandinavian Spruce – K-38441-1FNC-SPS
- Variants: Sauna only, or Sauna with installation (for each floor option, where available)
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Large – up to 5 people
- Model, No Floor: C1 Five-person Indoor Sauna, Scandinavian Spruce – K-39166-0FNC-SPS
- Model, With Floor: C1 Five-person Indoor Sauna with Floor, Scandinavian Spruce – K-39166-1FNC-SPS
- Variants: Sauna only, or Sauna with installation (for each floor option, where available)
Required Site Components
- Location: Indoor room with proper clearances, ventilation, and moisture-tolerant finishes. Ceiling height should typically be at least 8 ft to allow for ventilation and service access.
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Foundation:
- No floor models: Install directly over a level, moisture-appropriate surface (such as tile, sealed concrete, or a wet-room floor with drain).
- Floor models: Can sit on most flat indoor surfaces, including tile, sealed concrete, or hardwood, per KOHLER guidelines.
- Electrical: Dedicated 240 V electrical circuit, sized according to the included FERO electric sauna heater and controls. A licensed electrician must perform all electrical work in accordance with local codes and the KOHLER technical guides.
- Access: Clear path and sufficient doorway/turning space for bringing wall panels, glass, and components into the installation space.
- With installation variants: Site must be prepared with finished flooring (or wet-room surface), proper clearances, and electrical rough-in complete before installer arrival.
What’s Included
- KOHLER C1 Indoor Sauna cabin in Scandinavian Spruce (Small, Medium, or Large)
- Scandinavian spruce interior and exterior wall and ceiling panels
- Front frame, side, and rear wall panels
- Ceiling elements and bottom frame (for with-floor models)
- Solid obeche wood bench, matching backrest, headrest, and stool
- Heater safety rail
- Warm white 2700K indirect LED backrest lighting
- Freestanding FERO electric sauna heater (sized per model)
- Sauna stones sized for the included heater
- Heater guard
- Aerotherm ventilation system
- Tempered glass door and windows with high-quality interior and exterior handles
- Mineral wool insulation and rubber seals between wall sections
- Exterior digital control panel with display for temperature, time, and lighting
- Wall-mounted thermometer
- Beech wood 20-minute sand timer
- Installation hardware and fasteners
- Installation and operation manual
- Limited consumer warranty per KOHLER specifications
- With installation variants: Professional assembly and placement according to KOHLER guidelines
Specifications – Scandinavian Spruce Models
Shared System Specifications
| Interior Material | Scandinavian spruce wall and ceiling panels |
| Exterior Finish | Scandinavian spruce exterior wall panels |
| Seating and Backrest | Solid obeche wood bench, backrest, headrest, and stool |
| Door and Windows | Approximately 8 mm tempered glass door and side glazing |
| Insulation | Mineral wool insulation between wall panels with rubber seals |
| Heater | Freestanding FERO electric sauna heater with stones and guard (heater output sized to model; see technical guides) |
| Electrical Requirement | 240 V dedicated circuit (breaker and wire size per heater rating and local code; confirm with electrician and KOHLER documentation) |
Small – Scandinavian Spruce (up to 2 people)
| Models | No Floor – K-38440-0FNC-SPS With Floor – K-38440-1FNC-SPS |
| Nominal Exterior Dimensions (W × D × H) | Approximately 66 in × 48 in × 87 in |
| Actual Exterior Dimensions (W × D × H) | Approximately 65.8 in × 47.8 in × 86.4 in |
| Approximate Capacity | Up to 2 users |
| Approximate Shipping Weight – No Floor Model | Approximately 695 lbs (varies by configuration) |
Medium – Scandinavian Spruce (up to 3 people)
| Models | No Floor – K-38441-0FNC-SPS With Floor – K-38441-1FNC-SPS |
| Nominal Exterior Dimensions (W × D × H) | Approximately 78 in × 56 in × 87 in |
| Actual Exterior Dimensions (W × D × H) | Approximately 77.6 in × 55.7 in × 86.5 in |
| Approximate Capacity | Up to 3 users |
| Approximate Shipping Weight – No Floor Model | Approximately 760 lbs (varies by configuration) |
Large – Scandinavian Spruce (up to 5 people)
| Models | No Floor – K-39166-0FNC-SPS With Floor – K-39166-1FNC-SPS |
| Nominal Exterior Dimensions (W × D × H) | Approximately 82 in × 80 in × 87 in |
| Actual Exterior Dimensions (W × D × H) | Approximately 81.4 in × 79.3 in × 86.4 in |
| Approximate Capacity | Up to 5 users |
| Approximate Shipping Weight – No Floor Model | Approximately 1125 lbs (varies by configuration) |
Why Choose the C1 Indoor Sauna in Scandinavian Spruce?
- Turnkey indoor sauna with heater, stones, lighting, accessories, and controls included
- Warm Scandinavian spruce interior and exterior for a bright, spa-like environment
- Multiple sizes and floor options so you can match your layout, drainage needs, and budget
- Engineered by KOHLER for durability, comfort, and consistent performance
- Flexible installation options for dedicated spa rooms, luxury bathrooms, or home gyms
Shipping & Returns
- Shipping Method: Freight delivery with scheduled appointment
- Delivery: Free standard U.S. freight shipping to most locations (restrictions may apply)
- Returns: 14-day return policy on unused, uninstalled units in original packaging (see store policy for details)
Manuals & Documentation
Small – C1 Two-person Indoor Sauna Technical Guide (K-38440-0FNC)
Medium – C1 Three-person Indoor Sauna Technical Guide (K-38441-0FNC)
Large – C1 Five-person Indoor Sauna Technical Guide (K-39166-0FNC)
C1 Indoor Sauna – Installation & Assembly Manual
Frequently Asked Questions
Does the C1 Indoor Sauna include a heater and sauna stones?
Yes. Every KOHLER C1 Indoor Sauna in Scandinavian Spruce includes a freestanding FERO electric sauna heater, sauna stones, and a heater guard. This is a complete indoor sauna kit, so you do not need to purchase a separate heater unless you prefer a different configuration.
What is the difference between no floor and with floor models?
No floor models are designed to sit directly over an appropriate tile or wet-room floor and allow water to drain through your existing system. With floor models include an integrated spruce sauna floor for a more self-contained, finished appearance in dry rooms with standard flooring.
Can the C1 Indoor Sauna be installed in an alcove?
Yes. The C1 is engineered for both freestanding and alcove installation. Always follow KOHLER clearance and ventilation guidelines and verify that surrounding surfaces are appropriate for heat and moisture.
Do I need professional installation?
You can select a “with installation” variant (where available) for professional assembly and placement, or choose a standard kit if you already have a preferred contractor. In both cases, all electrical work and any structural changes must be performed by licensed professionals in accordance with local codes.
What electrical requirements should I plan for?
The included FERO electric sauna heater and lighting require a dedicated 240 V circuit. The exact breaker size and wire gauge depend on the model and local code. Always review the KOHLER technical guide for your chosen size and consult a licensed electrician to confirm the proper electrical configuration.
Why Buy From Us
FAQs
Shipping & Delivery
Free curbside shipping on all orders. White-glove delivery/setup available at checkout in most areas. We’ll confirm your preferred date after purchase.
Warranty
Full manufacturer warranty, registered at purchase. Need help with a claim? Our U.S. support team handles it directly with the brand.
Returns
New, uninstalled items can be returned within the brand’s policy window. We’ll help coordinate pickup and any restocking requirements.
Installation & Power
Most saunas/hot tubs require dedicated circuits. We provide spec sheets and can recommend licensed installers in your area.
