KOHLER C1 Indoor Sauna in Graphite Grey
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KOHLER C1 Indoor Sauna in Graphite Grey
The KOHLER C1 pairs a Graphite Grey exterior and Scandinavian spruce interior with obeche seating, a FERO electric heater, indirect lighting, and external digital controls. Choose a two-, three-, or five-person configuration for your indoor wellness room.
Freestanding and alcove installations are supported when the room meets Kohler’s clearance, ventilation, floor, and electrical requirements. Select the size and floor option that fit your room before arranging assembly or electrical work.
A Coordinated Indoor Sauna System
C1 brings the sauna cabin, heater, controls, seating, and lighting together in one package. The grey exterior can coordinate with contemporary cabinetry, tile, or gym finishes, while the wood interior creates a contrasting natural setting.
Capacity is a starting point for comparison. Consider how people will sit, available bench room, access around the cabin, and the installation space required above and beside the sauna.
Features That Shape the Sauna Experience
Graphite Grey Exterior
The grey exterior pairs with a Scandinavian spruce interior. Compare the finish with your room materials and confirm the cabin configuration before finalizing your design.
Obeche Seating
The seating package includes a bench, backrest, headrest, and stool. Compare the layout of each size with the seating positions you intend to use.
FERO Electric Heater
The included heater is matched to the cabin size. Review the electrical comparison below with your licensed electrician before preparing the circuit.
Lighting and Digital Controls
Warm 2700K indirect lighting and an exterior control panel provide convenient access to temperature, time, and backrest lighting settings.
Insulated Cabin Construction
Mineral wool insulation, tempered glass, and door seals form part of the cabin system. Follow the assembly directions so the panels and seals fit as intended.
Aerotherm Ventilation
The ventilation system is part of the cabin design. Keep its air paths clear and coordinate any alcove or exhaust arrangement with the model-specific instructions.
Choose Your Size and Floor Configuration
| Size | Listed capacity | Without floor | With floor |
|---|---|---|---|
| Small | Up to 2 people | K-39963-0FNC-CGS | K-39963-1FNC-CGS |
| Medium | Up to 3 people | K-39951-0FNC-CGS | K-39951-1FNC-CGS |
| Large | Up to 5 people | K-39950-0FNC-CGS | K-39950-1FNC-CGS |
Select the intended variant using the product’s purchase options. Confirm installation-service availability and scope separately for your location.
With Floor or Without Floor?
Without-Floor Configuration
The sauna uses the prepared room surface beneath it. Your installer should verify that the surface is level, load-bearing, easy to clean, and suitable for the manufacturer’s installation requirements.
Review floor materials and moisture management before choosing this option.
With-Floor Configuration
This configuration includes the sauna floor option. Confirm its dimensions, finished height, entry transition, and supporting-surface requirements using the matching specification sheet.
A supplied floor still requires appropriate room preparation and structural support.
Heater and Electrical Requirements by Size
| Specification | Small | Medium | Large |
|---|---|---|---|
| FERO heater | 4.5 kW | 4.5 kW | 9.0 kW |
| Required service | 220–240 V, 30 A | 220–240 V, 30 A | 220–240 V, 50 A |
| Frequency | 50/60 Hz | 50/60 Hz | 50/60 Hz |
| Published connection designation | NEMA 6-30P | NEMA 6-30P | NEMA 6-50P |
| Circuit protection | Dedicated circuit with Class A GFCI | Dedicated circuit with Class A GFCI | Dedicated circuit with Class A GFCI |
Have a licensed electrician confirm the matching documentation, supplied connection, circuit protection, wiring, and local requirements for the exact unit ordered. Electrical preparation and final connection must be included in your project plan.
Dimensions and Weight: No-Floor Models
| Measurement | Small | Medium | Large |
|---|---|---|---|
| Cabin dimensions, W × D × H | Approx. 65.6 × 45.9 × 83.5 in. | Approx. 77.4 × 53.8 × 83.5 in. | Approx. 81.4 × 77.4 × 83.5 in. |
| Product weight | Approx. 694.6 lb | Approx. 760.7 lb | Approx. 1,124.6 lb |
| Shipping weight | Approx. 981.2 lb | Approx. 1,047.4 lb | Approx. 1,499.4 lb |
These figures apply to the referenced no-floor models. Cabin measurements exclude the full installation envelope. Use the dimensioned drawing for door movement, rear ventilation projections, and required clearances. Obtain the matching with-floor sheet when selecting that configuration.
Prepare the Room Before Delivery
The cabin footprint is one part of the installation area. Plan space for assembly, room ventilation, service access, and comfortable entry and exit.
Ceiling and Wall Clearance
The supplied Small-model assembly manual calls for an 8-foot minimum room ceiling and at least 2 inches between the cabin and room walls. Confirm the matching requirements for your selected size and layout.
Supporting Floor
Have the supporting structure assessed for the cabin, heater, and occupants. Use the selected configuration’s technical information when evaluating an upper floor or an existing room.
Alcove and Ventilation
Keep air paths and roof-mounted equipment accessible. An alcove must preserve ventilation and service access; coordinate any exhaust extensions with the installation instructions.
Delivery and Assembly Access
Measure doorways, hallways, stairs, and turns for packaged panels and glass. Arrange a dry staging area, suitable lifting assistance, and an experienced assembly team.
What Is Included?
The manufacturer describes a coordinated cabin package. Confirm the item list for your selected size and floor configuration in the order documentation.
- Cabin panels with Scandinavian spruce interior and Graphite Grey exterior, ceiling components, frame, and assembly hardware
- FERO heater, sauna stones, and protective heater railing
- Seating components, backrest, headrest, and stool
- Exterior digital controls and indirect backrest lighting
- Ventilation components and tempered-glass entry
- Thermometer and sand timer
- Model-specific installation and operating documentation
- Floor components when the with-floor model is selected
Confirm any decorative roof kit, site work, electrical work, delivery upgrades, or professional assembly service separately. A sauna-only purchase does not establish the scope of an installation package.
Freight Delivery, Assembly, and Returns
Plan for scheduled freight receiving and confirm unloading access, pallet dimensions, and where the shipment will be placed. Review any stairs, restricted truck access, or special receiving requirements with our team before ordering.
If an installation option is selected, obtain its written scope and site-readiness requirements. Confirm responsibility for assembly, electrical preparation and connection, room modifications, and packaging disposal.
Review the shipping charge and delivery estimate for your selected variant, along with our shipping policy and return policy. Contact us before requesting a return or arranging freight.
Authorized Dealer Support and Warranty
My Luxury Home Spa is a veteran-owned, authorized Kohler dealer. We help compare sizes and configurations, clarify the purchase package, and coordinate product questions before and after the sale.
The sauna is covered by the KOHLER Sauna Limited Warranty, subject to its written terms. Review the coverage for the intended setting, included accessories, installation conditions, exclusions, and service procedures.
For planning assistance, send your ZIP code, room dimensions, ceiling height, delivery route, selected floor option, and target timeline.
Technical Sheets and Installation Documents
Match every document to the exact size and floor configuration. Share the current sheets with your installer and electrician before preparing the room.
Small / Two-Person
Medium / Three-Person
Large / Five-Person
With-floor specification sheet
Ask our team for the current Large-model assembly instructions for the selected configuration.
Compare and Plan
KOHLER C1 Graphite Grey FAQs
Does the sauna include a heater and stones?
Yes. The cabin package includes a FERO heater and stones. Heater output depends on the selected size; review the electrical comparison and matching technical sheet.
Can I use the C1 outdoors?
The C1 is designed for indoor installation. For an outdoor location, compare the KOHLER C2 outdoor sauna.
Can it fit in an alcove?
Alcove installation is supported when the matching instructions are followed. Preserve the required airflow, clearances, door access, and access to roof-mounted equipment.
Does a with-floor model eliminate room preparation?
The supporting surface, structural capacity, ventilation, and electrical supply must still meet the requirements for the selected configuration. Confirm the floor system with your installer.
Is professional installation available?
Check the purchase options and contact us to confirm service availability for your location. Review the scope and required site preparation before booking an installer.
Which measurements should my builder use?
Use the current dimensioned drawings for the exact model, floor configuration, and accessories. Include installation clearance and service access rather than relying on a rounded footprint alone.
Choose the Right C1 for Your Room
Send us your layout and preferred configuration. We can help you compare options and identify the details your installation team needs before you order.
Follow current Kohler installation, operation, and care instructions. Specifications and service packages may change; confirm the selected unit and written purchase terms before ordering.
Why Buy From Us
Shop trusted wellness brands with authorized dealer support and help choosing the right equipment.
Help understanding coverage and coordinating warranty inquiries. Coverage and registration requirements vary by brand and product.
Personal guidance from My Luxury Home Spa before, during, and after your purchase.
Ordering & Product Support FAQs
Shipping & Delivery
Free standard shipping is available on eligible products and destinations. Large equipment generally ships by freight with curbside delivery unless another service is expressly included.
White-glove placement, assembly, or other upgraded services may be available for select products and locations at an additional cost. Availability, scope, and pricing must be confirmed before booking. Processing, transit, and delivery scheduling vary by product and destination.
Review our Shipping Policy, or contact us before ordering if you need placement assistance or delivery by a particular date.
Warranty
Manufacturer warranty coverage varies by brand, model, component, and intended use. Review the product’s warranty documentation for coverage periods, exclusions, and any registration requirements. Commercial use may have different terms.
For warranty assistance, contact My Luxury Home Spa with your order number, model, serial number, and a description of the issue. We can help coordinate the next steps with the manufacturer or supplier.
Returns
Return eligibility, deadlines, fees, and shipping responsibilities vary by product. Some products have shorter return windows or specific restrictions. Eligible change-of-mind returns generally require unused equipment in its original packaging and written authorization before shipment.
Review our Return & Refund Policy and any product-specific terms before purchasing. Contact us promptly about damaged, defective, or incorrect items; these are reviewed separately from change-of-mind returns.
Installation & Power
Electrical, assembly, foundation, ventilation, drainage, and clearance requirements vary by product. Check the exact model’s specifications and manufacturer instructions before ordering or preparing your space.
Use qualified professionals where required. Delivery or optional placement service does not include electrical wiring, plumbing, site preparation, or full installation unless expressly included in your written service scope. Contact us if you need help locating the appropriate product documentation.
