Arki™ Duo High-Heat 170°F 2-Person Full-Body 360° Medical-Grade Red Light Therapy + Full Spectrum Infrared Sauna

A red light therapy sauna combines infrared heat with dedicated red and near-infrared light in the same cabin. The Arki Duo goes further with 360° full-body red light therapy, surrounding the seated user with light rather than relying on exposure from a single direction. It pairs that surround red light system with full-spectrum infrared heat, and each system can be used independently or together for a more versatile home sauna experience.

The Arki Duo is currently the only red light therapy sauna designed to surround the user with both 360° full-spectrum infrared and 360° medical-grade red light therapy. Rather than relying on a single front-facing light panel or directional red light exposure, Arki distributes both therapies around the cabin for simultaneous full-body coverage.

This 360° dual-therapy architecture is what sets Arki apart from infrared saunas that simply add red light panels to the cabin.

Yes. The Arki Duo is designed to deliver red light therapy around the seated user rather than from only one wall or direction. Medical-grade red light emitters are positioned throughout the cabin to create 360° coverage, allowing more of the body to receive light simultaneously without requiring you to continually turn toward or reposition in front of a single panel.

The Arki Duo's red light therapy system spans the 630–850 nm red and near-infrared range. At a normal seated distance, the system provides approximately 40–60 mW/cm² of irradiance, with an estimated light dose of approximately 48–108 J/cm² during a 20–30 minute session. Because the emitters are distributed around the cabin, the system is designed to provide broad, simultaneous light exposure rather than concentrating output on one small area.

In the Arki Duo, “medical-grade” refers to the specifications and engineering of its dedicated red and near-infrared LED system, including controlled wavelengths, measured light intensity, and full-body coverage. The system is designed around the performance standards expected from dedicated red light therapy equipment rather than using red-colored lighting for ambiance.

The Arki Duo is intended for general wellness use and is not a medical device. It is not designed to diagnose, treat, cure, or prevent disease.

Many infrared saunas incorporate red light through a single panel or a limited number of directional panels. The Arki Duo takes a different approach. Its medical-grade red light system surrounds the seated user with 360° coverage, while a separate full-spectrum infrared system provides near, mid, and far infrared throughout the cabin.

The result is a purpose-built dual-therapy sauna rather than an infrared sauna with red light added to one section of the cabin.

A standalone red light panel provides light without the heated environment of an infrared sauna and typically requires you to position your body in front of the light source. The Arki Duo combines 360° full-body red light therapy with full-spectrum infrared heat inside one cabin.

You can use red light therapy by itself, infrared heat by itself, or both systems together. A standalone panel may make sense for targeted light exposure, while Arki is designed for people who want broad red light coverage and a complete infrared sauna experience in one system.

Full-spectrum infrared means the Arki Duo provides near, mid, and far infrared rather than relying on far infrared alone. Its infrared system uses emitters positioned throughout the cabin to surround the seated area with heat.

Combined with Arki's separate 360° red light therapy system, this creates full-body coverage from two distinct technologies within the same sauna.

The Arki Duo reaches temperatures up to 170°F, giving buyers a high-heat option within the red light therapy sauna category. The higher temperature range is produced by the sauna's infrared heating system and remains separate from the dedicated red light therapy system.

Temperature can be adjusted based on the type of sauna experience you prefer, while the red light system can be controlled independently.

Yes. The Arki Duo allows you to use red light therapy on its own, infrared heat on its own, or both systems together. This gives you greater control over each session rather than requiring the two technologies to operate as a single fixed mode.

The Arki Duo is engineered for ultra-low EMF performance. Third-party testing measured approximately 0.32 mG at the center of the carbon heating panel, with measurements decreasing farther from the source.

Low-EMF engineering is considered alongside heat performance, infrared coverage, red light therapy, and the cabin's electrical design as part of the overall sauna system.

Yes. The Arki Duo is designed as a true 2-person sauna with room for two seated users while maintaining the surrounding infrared and red light configuration. Its exterior dimensions are approximately 47.3 inches wide, 39.5 inches deep, and 75 inches high.

The cabin is designed around both occupant space and therapy coverage rather than using capacity as a label based only on exterior dimensions.

The Arki Duo requires a dedicated 120V/20A electrical connection. Before installation, confirm that the intended location has the appropriate dedicated circuit or consult a qualified electrician if needed.

Planning the electrical connection before delivery helps make installation more straightforward.

The Arki Duo is designed for indoor use and takes approximately one hour to assemble. Its modular construction allows the sauna to be assembled in the room where it will be used rather than requiring a fully built cabin to be moved through the home.

Before installation, confirm that the space can accommodate the sauna's approximately 47.3-inch width, 39.5-inch depth, and 75-inch height, along with its dedicated 120V/20A electrical requirement.