Kohler C1 Scandinavian Spruce Indoor Sauna Kit

Some saunas try to make a statement. This one makes a room feel calm. The Kohler C1 in Scandinavian spruce is the quiet, natural expression of the C1 cabin — warm wood inside and out, with none of the visual weight, so it settles into a home the way a well-made piece of furniture does. Slide open the tempered-glass door and the material does the talking: pale, honeyed spruce, the soft grain of handcrafted obeche-wood benches, and a warm-white glow rising gently from behind them. It feels restful before a single degree of heat arrives.

At the center is a freestanding electric heater topped with sauna stones — the traditional heart of the ritual, radiating an even, enveloping warmth you can deepen with a ladle of water over the rocks. This is the unhurried Nordic experience, elemental and slow, delivered with modern ease. An external digital display sets the temperature, the session length, and the lighting without breaking the quiet inside, while a dual thermostatic system keeps every session steady, safe, and repeatable.

Comfort here is built in, not left to chance. An intelligent ventilation system keeps fresh air moving through the cabin so the heat never turns stale, and thick mineral-wool insulation behind tongue-and-groove walls holds the warmth where it belongs — as much a matter of efficiency as of comfort. Smaller rituals are considered too: an interior thermometer to read the room, and a beech-wood hourglass whose falling sand marks the session in a way no phone should.

Its real luxury is how naturally it belongs. The C1 can stand alone as a freestanding focal point in a spare room or gym, or tuck neatly into an alcove, and it comes in sizes that suit a solo unwind or an evening shared with company. However you place it, it arrives as a complete kit designed to become a permanent, glowing fixture of the home — the warm wooden corner you find yourself drifting toward when the day asks to be let go.

• Natural Scandinavian spruce inside and out for a warm, light, understated look
• Freestanding electric heater with sauna stones for authentic, even, traditional heat
• Handcrafted obeche-wood bench, backrest, headrest, and stool for relaxed repose
• Soft warm-white indirect lighting glowing from behind the benches
• Intelligent ventilation system keeps fresh air circulating for comfort throughout the session
• Dual thermostatic control with an external digital display for temperature, time, and lighting
• Interior thermometer and a beech-wood hourglass sand timer to track your session
• Mineral-wool insulation and tempered glass hold heat for an efficient session
• Freestanding or alcove installation, in sizes for two to five people
• Arrives as a complete kit — cabin, heater and stones, benches, lighting, and installation hardware

What sizes does it come in?
The C1 is available in 2-, 3-, and 5-person sizes. The 2- and 3-person cabins use a 4.5 kW FERO heater, while the larger 5-person cabin uses a 9 kW heater; each size has its own footprint, all sharing the same 83-1/2" height.

How is this different from the Graphite Gray C1?
It's the same C1 cabin with a natural Scandinavian spruce exterior instead of the graphite-gray finish — a warmer, all-wood look — with the same heater, ventilation, controls, and construction inside.

Can it be freestanding, or does it need an alcove?
Either. The C1 is designed to stand on its own as a focal point or to tuck neatly into an alcove, so it fits a spare room, a home gym, or a dedicated wellness space.

Do I need an electrician to install it?
Yes. The heater runs on a dedicated Class A GFCI circuit — 220–240V, 30A for the 2- and 3-person sizes or 50A for the 5-person size — which must be installed by a licensed electrician.

Is the floor included?
A full floor kit is available as an option and lets you install the sauna on any level surface. Without it, the cabin sits directly on your prepared, level floor.

How is it delivered?
Free USA shipping. Your order is packed and shipped within 1–3 business days and typically delivered within 5–10 business days.