Architectural Outdoor Sauna Design with Premium Heat & Smart Control

Create a refined backyard wellness retreat with the KOHLER C2 Outdoor Sauna Kit. Designed for year-round outdoor use, the C2 combines a Weathered Grey Spruce exterior, Scandinavian spruce interior, solid Obeche wood seating, tempered glass, high-performance insulation, and integrated lighting in a sophisticated freestanding cabin. KOHLER offers the C2 in configurations for up to 3, 5, or 6 people.

Inside, the cabin is designed around a traditional sauna experience with a freestanding FERO 9.0kW electric heater, sauna stones, heater guard, dual thermostatic controls, and an external digital control panel. The Aerotherm ventilation system supports air exchange, while 2700K warm-white indirect lighting creates a softer interior atmosphere.

The exterior is built to handle outdoor conditions with 2.1-inch mineral-wool wall insulation, a triple-insulated roof with a waterproof EPDM membrane, roof eaves, rubber door seals, and tempered glass. A lockable exterior control-panel cover and locking front door provide additional protection when the sauna is not in use.

Why You’ll Love It

• Choice of Three Capacities — Select a compact configuration for up to 3 people, a medium configuration for up to 5, or a larger cabin for up to 6.
• Weathered Grey Spruce Exterior — The distinctive exterior gives the C2 a contemporary architectural appearance while complementing outdoor landscapes.
• Premium Scandinavian Spruce Interior — Light-toned spruce creates a welcoming traditional sauna environment.
• 9.0kW FERO Electric Heater — The freestanding FERO heater delivers traditional sauna heat and includes sauna stones and a protective heater guard.
• External Digital Controls — Adjust temperature, session time, and backrest lighting from the control panel mounted outside the cabin.
• Advanced Heat Retention — Mineral-wool insulation, insulated roofing, rubber seals, and tempered glazing help retain warmth inside the cabin.
• Aerotherm Ventilation — Designed to provide adequate oxygen supply and air exchange during sauna sessions.
• Warm 2700K Lighting — Indirect interior lighting behind the backrest adds a warm, understated ambiance.
• Secure Outdoor Design — A lockable front door and lockable control-panel cover help protect the sauna from unauthorized use and weather exposure.

Designed for Year-Round Outdoor Wellness

The KOHLER C2 is engineered as a permanent outdoor sauna rather than a lightweight portable unit. Its exterior construction, insulated envelope, waterproof roof system, protected controls, and extended roof eaves are designed around outdoor installation and changing weather conditions.

The three available size configurations also make the C2 adaptable to different backyard layouts, from a smaller three-person footprint to the larger six-person cabin.

Weathered Grey Spruce Exterior

The selected Weathered Grey Spruce finish gives the C2 a modern, understated appearance. KOHLER also offers the outdoor C2 in a Douglas Fir exterior, but the product covered here is the Weathered Grey Spruce configuration.

Scandinavian Spruce Interior & Obeche Seating

Inside, the C2 uses Scandinavian spruce for the sauna interior, complemented by solid Obeche wood benches, backrests, headrests, and stool elements depending on configuration. The seating is designed around a comfortable traditional sauna environment and includes a 22-7/8-inch-deep bench in the published specifications.

FERO Electric Heat & Traditional Sauna Bathing

The C2 includes a freestanding FERO 9.0kW electric sauna heater with Obeche wood safety railing, sauna stones, and heater guard. This is a conventional sauna-heating system rather than a dedicated steam-generator system. Water may be added to the hot stones according to the heater manufacturer's instructions to create the traditional humid sauna experience.

External Digital Control Panel

The external digital control panel provides convenient access to temperature, session time, and backrest lighting before entering the cabin. Its protective cover locks securely to help shield the controls from the elements and unauthorized use.

Insulated Cabin & Roof

The C2 uses 2.1-inch (54mm) mineral-wool insulation between the walls. Its roof uses multiple insulation layers, an air gap, and a waterproof EPDM membrane, creating a more robust insulated envelope for outdoor operation.

Tempered Glass & Outdoor Protection

The sauna incorporates tempered glass, rubber door seals, durable exterior handles, and roof eaves. The eaves extend beyond the cabin to help protect the exterior from weather while also providing shade.

Product Specifications

Electrical specifications and warranty are based on the current KOHLER C2 documentation and current matching dealer/manufacturer listings.

Size Options & Dimensions

Up to 3 People

Exterior: 100.8"W × 85.1"D × 90.4"H
Interior: 74.8"W × 59.1"D × 78.9"H
Weight: 2,304.2 lb
Shipping Weight: 2,679.1 lb

Up to 5 People

Exterior: 108.8"W × 100.9"D × 90.4"H
Interior: 82.7"W × 74.8"D × 78.9"H
Weight: 2,469.6 lb
Shipping Weight: 3,219.3 lb

Up to 6 People

Exterior: 116.1"W × 108.3"D × 90.4"H
Interior: 90.6"W × 82.7"D × 78.9"H
Weight: 2,910.6 lb
Shipping Weight: 3,660.3 lb

What's Included

The current product documentation identifies the following core components:

• Sauna cabin panels and structural components
• Front, side, and rear wall panels
• Ceiling elements
• Bottom frame
• Benches
• Backrest
• FERO 9.0kW electric sauna heater
• Heater guard
• Sauna stones
• External digital control panel
• Lighting
• Tempered glass
• Matte aluminum door hinges
• Stainless steel exterior handle
• Waterproof EPDM roof membrane
• Installation hardware
• Installation and operation manual
• 5-year limited residential warranty

Included Comfort Accessories

Current package information also identifies:

• Wall-mounted thermometer
• Beech 20-minute hourglass sand timer
• Headrest
• Solid wood sauna stool

Outdoor Installation Considerations

The C2 is a substantial outdoor structure. Depending on the selected configuration, the finished sauna weighs approximately 2,304 to 2,911 pounds, before accounting for shipping packaging.

A suitable, level installation surface must be prepared before delivery. The electrical system should be installed according to KOHLER's documentation and applicable local requirements, with a qualified electrician handling the heater connection.

Because of the size and weight, delivery planning is important. Current dealer information describes appointment-based freight delivery, with larger configurations requiring appropriate equipment and site access for unloading and placement.

Shipping & Delivery

Current dealer listings advertise freight delivery to the continental United States, with delivery arranged by appointment. Some dealers include freight in the listed price, while others may quote shipping separately depending on location.

Customers should confirm delivery access, unloading requirements, and final freight terms before ordering.

Installation

The C2 is a freestanding outdoor sauna designed for installation on a properly prepared site. The installation process includes assembling the cabin structure and completing the electrical connection for the FERO heater. KOHLER's documentation should be followed for foundation preparation, clearances, ventilation, electrical connection, and commissioning.

A licensed electrician should complete the heater connection where required.

Care & Maintenance

Keep the sauna interior clean and allow it to dry adequately between sessions. Periodically inspect the benches, glass, exterior cladding, roof membrane, ventilation openings, heater, stones, controls, and door seals.

KOHLER's specifications identify the sauna stones, thermometer, and sand timer as part of the included equipment. Sauna stones should be inspected periodically and replaced when they become cracked or deteriorated.

Warranty

The KOHLER C2 Outdoor Sauna is supported by a 5-year limited residential warranty according to current KOHLER warranty documentation and matching dealer listings.

Warranty coverage is subject to KOHLER's current terms, conditions, exclusions, and intended-use requirements.

Safety & Usage Information

Operate the sauna and FERO heater according to KOHLER and heater-manufacturer instructions.

The heater operates on a 220–240V, 50A electrical configuration, so the electrical installation should be completed by a qualified professional and must comply with applicable local codes.

Use appropriate caution around hot surfaces, sauna stones, and high temperatures. Water should only be added to the hot stones in accordance with the heater manufacturer's instructions.

The original promotional copy included claims concerning detoxification, skin purification, circulation, and therapeutic effects. Those claims have been removed from the customer-facing listing because the verified product documentation supports the sauna's design, heating, ventilation, comfort, and relaxation functions, not guaranteed medical outcomes.

Wellness Applications

The KOHLER C2 Outdoor Sauna is well suited to:

• Backyard sauna retreats
• Family and friend sauna sessions
• Traditional sauna bathing
• Outdoor relaxation
• Post-exercise relaxation routines
• Premium landscape projects
• Dedicated home wellness spaces
• Year-round outdoor sauna use

Why Choose Wellness Edge Frontier?

Wellness Edge Frontier brings together premium wellness equipment designed for customers creating elevated spaces for relaxation, self-care, and everyday well-being.

The KOHLER C2 Outdoor Sauna Kit combines sophisticated architecture with premium materials, traditional electric sauna heating, advanced insulation, Aerotherm ventilation, integrated lighting, and flexible capacity options for a refined outdoor wellness environment.

Frequently Asked Questions

How many people can the KOHLER C2 accommodate?
The C2 Outdoor Sauna is available in configurations for up to 3, 5, or 6 people.

What exterior finish is this product?
This listing is for the Weathered Grey Spruce finish. KOHLER also offers the outdoor C2 in Douglas Fir.

What is the interior wood?
The interior is made from Scandinavian spruce, with solid Obeche wood used for seating and related components.

What heater does it use?
The C2 uses a freestanding FERO 9.0kW electric sauna heater with sauna stones and a heater guard.

Does it require a steam generator?
No separate steam generator is documented. This is a traditional sauna system using an electric heater and sauna stones. Water can be added to the stones according to the heater manufacturer's instructions to create humidity.

What are the electrical requirements?
The published specifications identify 220–240V, 50A for the heater and 240V, 50A for the sauna room, with a NEMA SS2-50P outlet specification.

Does it have ventilation?
Yes. The cabin incorporates KOHLER's Aerotherm ventilation system to support oxygen supply and air exchange.

How thick is the wall insulation?
The C2 uses 2-1/8-inch (54mm) mineral wool insulation between the walls.

Does it have tempered glass?
Yes. The cabin uses tempered-glass components, including the entrance door and windows.

Does the sauna include lighting?
Yes. It includes 2700K warm-white indirect lighting and exterior lighting.

Can the sauna controls be accessed from outside?
Yes. The digital control panel is mounted externally and controls temperature, session time, and backrest lighting. It also has a locking cover.

Does the front door lock?
Yes. The current KOHLER specifications state that the front door securely locks when the sauna is not in use.

What is the warranty?
KOHLER provides a 5-year limited residential warranty for the sauna.