Indoor Sauna Kit | Kohler C1 | 2 Person, 3 Person, or 5 Person

Kohler C1 Indoor Sauna Kit | 2 Person, 3 Person, or 5 Person

Premium Freestanding or Alcove Indoor Sauna with FERO Electric Heater

The Kohler C1 Indoor Sauna Kit is a premium indoor sauna available in multiple sizes for up to 2, 3, or 5 people. Built with a Scandinavian spruce interior and exterior, tempered glass door and windows, and warm white indirect backrest lighting, the C1 brings a refined sauna experience into residential interiors.

Each configuration includes a FERO electric sauna heater, sauna stones, heater guard, digital exterior control panel, and integrated lighting. Mineral wool insulation, rubber seals, and tongue-and-groove construction support heat retention, while the Aerotherm ventilation system promotes oxygen supply and air exchange during use.

Choose your preferred size and whether you'd like the sauna delivered with or without installation from the variant options above.

Who This Is For

The Kohler C1 is the right choice for homeowners who want a premium, ready-to-assemble indoor sauna with a refined Scandinavian aesthetic, digital controls, and flexible freestanding or alcove placement. It's ideal for dedicated sauna rooms, finished basements, or large bathrooms.

Key Features

• Available in 2-person, 3-person, and 5-person layouts
• Freestanding or alcove installation flexibility
• Premium Scandinavian spruce interior and exterior walls
• FERO freestanding electric sauna heater included
• Warm white indirect backrest lighting
• Tempered glass door and windows
• Digital control panel for temperature, session time, and backrest lighting
• Dual thermostatic control for safe, consistent, repeatable sessions
• Aerotherm ventilation system for oxygen supply and air exchange
• 2.1" mineral wool insulation between walls
• Tongue-and-groove walls and connections for a seamless appearance
• Beech wood door handles

Available Size Options

• Up to 2 People — Exterior: 65.8"W × 46.9"D × 86.4"H | Interior: 59.1"W × 39.4"D × 77.4"H
• Up to 3 People — Exterior: 77.6"W × 55.8"D × 86.3"H | Interior: 70.9"W × 47.3"D × 77.4"H
• Up to 5 People — Exterior: 81.6"W × 79.4"D × 86.4"H | Interior: 74.8"W × 70.9"D × 77.4"H

Heater & Electrical by Size

• Up to 2 People: 4.5kW / 30A / NEMA 6-30P
• Up to 3 People: 4.5kW / 30A / NEMA 6-30P
• Up to 5 People: 9kW / 50A / NEMA 6-50P

Specifications

• Construction Material: Scandinavian Spruce
• Seating Material: Obeche Wood
• Door & Window Material: Tempered Glass
• Door Handle Material: Beech Wood
• Heater Safety Rail Material: Obeche Wood
• Floor Type: Spruce or No Floor
• Installation Method: Freestanding or Alcove
• Wall Clearance Required: 2" (5 cm)
• Ceiling Clearance Required: 8' (2.4 m)
• Electrical Cord Length: 9' 10" (2.9 m) — exits top rear
• Heater Voltage: 220–240V / 50–60 Hz
• Sauna Room Voltage: 240V / 50–60 Hz
• Heater Safety Distance: 1.6" (4 cm)

Weight by Size

• Up to 2 People: 694.6 lbs (No Floor) / 713.1 lbs (With Floor) | Ships at 981.2 / 999.8 lbs
• Up to 3 People: 760.7 lbs (No Floor) / 786.7 lbs (With Floor) | Ships at 1,047.4 / 1,073.8 lbs
• Up to 5 People: 1,124.6 lbs (No Floor) / 1,911.2 lbs (With Floor) | Ships at 1,499.4 / 2,197.9 lbs

What's Included

• Front frame panels, side wall panels, rear wall panels, ceiling elements, bottom frame
• Backrest, benches, headrest, stool
• FERO electric sauna heater, heater guard, and sauna stones
• Digital control panel and lighting
• Wall-mounted thermometer
• Beech 20-minute hourglass sand timer
• Installation hardware and operation manual
• 5-year limited warranty for consumer use

Shipping & Delivery

This product ships free via freight carrier to the contiguous United States. Delivery is made by special appointment on a wooden pallet and is curbside only — the driver will lower the shipment to ground level. You may be contacted prior to shipping to review delivery details and discuss any site-specific conditions. Estimated Delivery Time: Most orders arrive within approximately 14–21 business days, including processing and transit time.

Installation Notes

• Designed for freestanding or alcove installation
• Requires a dedicated 240V electrical connection — consult a licensed electrician
• Minimum 8' ceiling clearance and 2" wall clearance required
• Professional assembly is recommended; installation service available as a variant option

Warranty

This product includes a 5-year limited warranty for consumer use. As an authorized Kohler retailer, Prime Regeneration ensures complete warranty coverage is passed through to you at the time of purchase.

Manuals & Documentation

• C1 Readiness Guide
• 2-Person Installation & Operation Manual
• 3-Person Installation & Operation Manual
• 5-Person Installation & Operation Manual
• Spec Sheet – 2-Person (K-38440)
• Spec Sheet – 3-Person (K-38441)
• Spec Sheet – 5-Person (K-39166)

FAQ

Can this sauna be installed freestanding or in an alcove?
Yes — the Kohler C1 is designed for both freestanding and alcove installation. Minimum 2" wall clearance and 8' ceiling clearance are required.

What electrical connection is required?
The 2-person and 3-person models require a dedicated 240V / 30A / NEMA 6-30P connection. The 5-person model requires a dedicated 240V / 50A / NEMA 6-50P connection. A licensed electrician must install the circuit.

Is installation included?
Installation is available as an optional add-on — select "With Installation" from the variant options above.

Does this ship for free?
Yes — free freight shipping is included to the contiguous United States. Delivery is curbside by appointment.

What is the warranty?
The Kohler C1 includes a 5-year limited warranty for consumer use, passed through in full by Prime Regeneration as an authorized Kohler retailer.