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Arki™ Outdoor Duo High-Heat 170°F 2-Person Full-Body 360° Medical-Grade Red Light Therapy + Full Spectrum Infrared Sauna
All-Season Outdoor Infrared Sauna with Red Light Therapy
✓ 360° Full-Body Medical-Grade Red Light + Full Spectrum
✓ True medical-grade infrared across near, mid & far wavelengths (630–50,000 nm)
✓ Ultra-Low EMF/ELF (Avg 0.32mG)
✓ Heat Up to 170°F
✓ Roomy 2-Person Design - 45"W x 37"D x 72.5"H
Speak with a sauna specialist today. Ask about our optional installation service.
Key Features at a Glance
All the performance you need, built to last a lifetime.
Capacity
2 Person
Cedar Wood
FSC-certified, chemical-free
Full Spectrum Infrared
(6) near infrared
(11) far & mid infrared (630–50,000 nm)
Red Light Therapy
Medical-Grade
Climate Range
0°F to 104°F
Max Temp
170°F (77°C)
Power
120V / 20 Amp
Technology
Arki Dual Therapy™
Exterior
Aerospace Aluminum
Assembly
1 Hour
Warranty
Lifetime Warranty
Operating Cost
~$0.25 / session
Arki Outdoor Sauna Videos
Watch the introduction videos of Arki Outdoor Red Light Therapy Sauna
What Makes Arki Outdoor Different?
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Built for All Seasons
Engineered with Aerospace-Grade Aluminum to withstand rain, snow, and extreme temperatures without warping or damage
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Medical-Grade Red Light Therapy
Advanced red light envelops you at a cellular level, helping restore natural energy, improve skin vitality, and reveal your healthiest glow.
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Indoor-Level Comfort, Outdoors
Full-spectrum infrared heat, ergonomic seating, and premium materials designed for a cozy experience in every season
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Plug-and-Play Installation
No contractor needed. Arki Outdoor fits seamlessly in backyards, patios, and decks.
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Efficient, Fast Heating
Heats quickly and evenly, up to 170°F, so you can enjoy a session even on cold days
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Modern Aesthetic
Minimal, Scandinavian-inspired design made to complement outdoor spaces rather than clutter them
Experience the Arki Lifestyle
Your daily ritual for recovery, relaxation, and rejuvenation. An investment in your well-being that pays dividends for life.
Top Benefits
Experience a total transformation in your health and well-being.
The Arki Dual Therapy Technology
Infrared heat and red light work together in one outdoor sauna to help your body recover, relax, and recharge.
Full Spectrum Infrared
11 advanced emitters provide deep tissue penetration to detoxify, support cardiovascular health, and relieve muscle pain.
Targeted Red Light Therapy
6 integrated emitters (660nm) work at the cellular level to boost collagen, rejuvenate skin, and enhance natural energy.
The Dual Resonance Effect™
Using both together enhances circulation, deepens relaxation, and amplifies the benefits of each therapy for faster recovery and overall wellness.
Built for All Seasons
From blistering heat to freezing cold, your wellness sanctuary is always ready.
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7-Layer Insulation System
Proprietary thermal architecture maintains optimal cabin temperature in extreme weather.
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Aerospace-Grade Aluminum Exterior
Aviation-quality durability that won't rust, rot, or warp. Zero maintenance required.
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Premium Hemlock Interior
Naturally resistant to moisture with beautiful honey tones and subtle grain patterns.
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Operational in Extreme Climates
From -18°C to +40°C (0°F to 104°F) - Use it year-round, anywhere.
Technical Specifications
The details that matter. Built to exacting standards.
Dimensions
- Exterior:
- 55.25" (W) x 47.25" (D) x 77.5" (H)
- Interior:
- 45" (W) x 37" (D) x 72.5" (H)
- Weight:
- 450 lbs
Electrical
- Voltage:
- 120V
- Amperage:
- 20 Amps
- Power:
- 2,350 Watts
- Circuit:
- Dedicated 20-amp required
- Plug Type:
- NEMA 5-20P
Materials & Performance
- Placement:
- Outdoor
- Interior Wood:
- Premium Hemlock
- Exterior:
- Aerospace-Grade Aluminum
- EMF/ELF Levels:
- Ultra-low (<0.32mG)
- Heaters:
- 11 full spectrum carbon
- Red Light:
- 6 emitters at 660nm
Pay Over Time. Wellness Now.
Get 0% APR financing. Instant approval
Outdoor Red Light Therapy Sauna FAQs
Learn how the Arki Outdoor Duo combines all-weather engineering with 360° medical-grade red light therapy, full-spectrum infrared, and high-heat performance up to 170°F for year-round outdoor use.
Yes, when the sauna is specifically engineered for outdoor use. The Arki Outdoor is designed for year-round exterior placement, with an aerospace-grade aluminum exterior, a 7-layer insulation system, and an operating range designed for temperatures as low as 0°F (-18°C).
Unlike an indoor sauna placed outside, its materials and construction are designed for changing outdoor conditions.
The Arki Outdoor is engineered as an outdoor sauna rather than an indoor cabin adapted for exterior placement. Its aerospace-grade aluminum exterior helps protect the structure from rain, snow, and direct sun, while its 7-layer insulation system helps support sauna performance as outdoor temperatures change.
Inside, the sauna combines full-spectrum infrared heat with 360° red light therapy in a two-person cabin designed to become a permanent part of a backyard, patio, or outdoor wellness space.
Yes. The Arki Outdoor is built for exterior placement and is designed to withstand rain, snow, direct sunlight, and seasonal temperature changes.
Its aluminum exterior also requires less ongoing exterior upkeep than exposed wood, making it well suited to homeowners who want a permanent outdoor sauna without adding another high-maintenance structure to their property.
Yes. The Arki Outdoor is engineered for year-round use and can operate in outdoor temperatures as low as 0°F (-18°C).
Its insulated construction helps protect the sauna environment from changing exterior conditions, allowing it to remain part of an outdoor wellness space through colder seasons rather than becoming a warm-weather-only feature.
A true outdoor sauna is designed for direct exterior exposure, including changing temperatures, sunlight, rain, and snow. A semi-outdoor sauna is intended for a more protected environment, such as a covered patio, enclosed terrace, or similarly sheltered space.
The Arki Outdoor is JNH Lifestyles' all-weather outdoor sauna. For covered or semi-outdoor environments, JNH's Pro Series is engineered for a different type of installation.
Traditional outdoor saunas typically use a stove or heater to raise the temperature of the surrounding air, often creating a very high-heat environment. An infrared sauna uses infrared energy to create a different type of sauna experience.
The Arki Outdoor uses 360° full-spectrum infrared and reaches temperatures up to 170°F while also incorporating dedicated 360° red light therapy. It is designed for homeowners who want infrared technology in a sauna engineered to remain outdoors year-round.
The Arki Outdoor can be incorporated into a backyard, patio, pool area, reinforced deck, or other suitable outdoor wellness space, provided the installation location has a solid, level foundation and access to the required electrical service.
When choosing a location, consider both everyday access and how the sauna will fit into the surrounding outdoor environment. A sauna that is conveniently placed can become a more natural part of regular home use.
The Arki Outdoor requires a solid, level foundation. Suitable options may include a concrete pad, properly reinforced deck, or appropriately prepared paver base.
A level surface is important for correct assembly, structural stability, and proper door alignment. If the sauna will be incorporated into a larger backyard or landscape project, foundation planning should be considered early in the design process.
The Arki Outdoor operates on 120V power and requires a dedicated 20-amp circuit with the appropriate outlet for its NEMA 5-20P plug.
It does not require a 240V hardwired electrical setup. If the required dedicated circuit is already available near the planned sauna location, additional electrical work may not be necessary.
The sauna itself does not require hardwiring. However, the Arki Outdoor does require a dedicated 120V, 20-amp electrical circuit.
If the appropriate circuit and outlet are already available at your installation location, an electrician may not be necessary. If you are unsure whether your existing electrical service meets the requirements, we recommend confirming it with a qualified electrician before installation.
The Arki Outdoor is designed to keep exterior maintenance minimal. Its aerospace-grade aluminum exterior does not require the staining, sealing, or refinishing commonly associated with exposed outdoor wood.
For the interior, basic care includes keeping the cabin clean, using towels on seating surfaces, and wiping down the benches as needed after use.
The Arki Outdoor is designed for two-person assembly in approximately 2 hours. Professional installation is also available for customers who prefer to have the sauna assembled for them.
Full-spectrum infrared and red light therapy are two separate technologies built into the Arki Outdoor.
The full-spectrum infrared system provides the sauna's heat using near-, mid-, and far-infrared wavelengths. The dedicated red light system uses 660 nm light and provides 360° red light exposure throughout the cabin.
Because both systems are incorporated into the Arki Outdoor, homeowners can access infrared sauna heat and red light within the same outdoor wellness space rather than installing separate equipment.
An Arki Outdoor consultation gives you an opportunity to speak with a US-based JNH sauna specialist before purchasing. They can discuss your intended installation location, electrical requirements, delivery considerations, assembly options, and questions about whether the Arki Outdoor is the right fit for your space.
The consultation is designed to help you understand the practical details of bringing an outdoor sauna into your home before making your purchase.
"I use the Arki as a crucial part of my training and recovery routine. The combination of 360° of heat and medical grade red light therapy are an absolute game changer. If you’re looking for the best, look no further."
Tyler Schwartz
Verified Buyer
The Arki Difference
We're not just building saunas. We're engineering a new standard for wellness.
All-Climate Assurance
Engineered to perform from -18°C to 40°C. Your wellness doesn't take a season off.
Dual Therapy Innovation
The only outdoor sauna combining full spectrum infrared with integrated red light therapy.
Aerospace-Grade Construction
Premium aluminum exterior and 7-layer insulation system built to outlast decades.
Standard Power, Premium Performance
Professional results without professional electrical requirements. Just plug in and go.
Hemlock Heritage
Time-honored Nordic craftsmanship meets North American sustainability.
Built to Last
Not just for years-for decades. This is an heirloom wellness investment.
Complimentary Expedited Delivery
SHIPS IN 7 DAYS
- Free expedited shipping to contiguous US
- Orders begin shipping December 1st
- Curbside delivery with lift gate
- Tracking provided
- Delivery appointment scheduled
Limited Lifetime Warranty
COMPREHENSIVE COVERAGE
- 7 years residential use
- 3 years commercial use
- Covers heaters, controls, & structure
- Lifetime customer support
Speak With a Sauna Specialist
We're here to help. Our US-based team is ready to answer your questions about the sauna, delivery, and our optional installation service.