The Signature® Series

Signature Renew BathroomSunlighten™ Signature® Infrared saunas are an effective tool for natural healing and prevention. Infrared light has the ability to penetrate human tissue which in turn produces a host of anti-aging health benefits making infrared saunas one of the “hottest” home therapies for overall healthier living. If you want to get yourself back into balance, an infrared sauna may be the ticket to achieving your wellness goals.


Signature® I

Turn any room into a personal oasis with the newest Signature sauna. This slim design is luxurious, extremely functional and the most effective on the market. 

Start enjoying the benefits of infrared therapy with this space! Our most economical model will transform any room into a spa retreat. Relax and immerse yourself in soothing Solocarbon® heat. Let the cares of the day drift away as you bask under soft interior lighting, warmed by 6 infrared sauna heaters and a premium Blaupunkt sound system. Start enjoying the health benefits of a best-in-class Signature® 1 infrared home sauna today.

The Signature® 1 offers comfortable room inside, whilst conveniently taking very little external area.

This sauna is the perfect addition to a room or space of any size. The chic design of this home infrared sauna will add an element of contemporary sophistication to any room of your home.


Exterior Dimensions101.6cm W x 106.4cm D x 196.9cm H / 71.1cm door width
Interior Dimensions81.5cm W x 85.4cm D x 178.1cm H / 50.8cm bench depth
Sauna Wood OptionsEco-certified Basswood
Eco-certified Cedarwood
Technical6 Heaters
Electrical120V 1350W 15A (NEMA 5-15R, 5-15P, dedicated 120V 15A circuit and outlet required).
Weightup to 448 lbs

Signature® II

Restore your healthy vitality with this slim and sleek Signature® sauna. Elegant details of crown molding and exterior lighting make this far infrared sauna a beautiful addition to any room. The Signature® II is an attractive space-saver for one or two persons.

Relax and immerse yourself in soothing Solocarbon® heat. Let the cares of the day drift away as you bask under soft interior lighting, warmed by 9 infrared sauna heaters and a premium Blaupunkt sound system. Start enjoying the health benefits of a best-in-class Signature® 2 infrared home sauna today.



Exterior Dimensions134.9cm W x 122.2cm D x 196.9cm H / 71.1cm door width
Interior Dimensions116.6cm W x 101.6cm D x 178.1cm H / 50.1cm bench depth
Sauna Wood OptionsEco-certified Basswood
Eco-certified Cedarwood
Technical9 Heaters
Electrical120V 1760W 15A (NEMA 5-15R, 5-15P, dedicated 120V 15A circuit and outlet required).
WeightUp to 492 lbs
Signature® III

Turn any room in your home a personal sanctuary. Renew your body and spirit in this spacious Signature® sauna. Share a therapeutic experience with others or lie down and stretch out with extra interior space.

For those who wish to share this premium home sauna experience with friends or family, the Signature® III from Sunlighten is a 3-person sauna large enough to share with others and modest enough to fit into any room. For the home spa enthusiast, the Signature® III infrared sauna is built with quality and comfort that addresses whole-body relaxation needs. Turn any room into a personal spa sanctuary with 10 heaters, deep-penetrating infrared heat, tall benches, and space enough to stretch out and enjoy the home sauna experience at its best.
The Signature® III sauna is a must-have for sharing the relaxing home sauna experience with others.

Want to really feel the music? With the SO Sound Vibrational Therapy add-on, the vibrations of your favorite music resonate throughout your sauna session, allowing you to feel a full-body musical massage. Ask about the SO Sound Vibrational Therapy add-on as part of our Signature® Revive solocarbon infrared saunas today.

Exterior Dimensions164.1cm W x 122.2cm D x 196.9cm H / 71.1cm door width
Interior Dimensions145.6cm W x 101.6cm D x 178.1cm H / 50.1cm bench depth
Sauna Wood OptionsEco-certified Basswood
Eco-certified Cedarwood
Technical10 Heaters
Electrical120V 2035W 20A (NEMA 5-20R, 5-20P, dedicated 120V 20A circuit and outlet required).
Weightup to 598 lbs
 Sunlighten™ Signature® Collection Comparison Chart
Signature® ISignature® IISignature® III
# of People11 - 22 - 3
Exterior Dimensions40.0" W
41.9" D
77.5" H
53.1" W
48.1" D
77.5" H
64.6" W
48.1" D
77.5" H
Interior Dimensions32.1" W
33.6" D
70.1" H
45.9" W
40.0" D
70.1" H
57.3" W
40.0" D
70.1" H
Wood OptionsEco-certified Bass­wood
Eco-certified Cedar
Eco-certified Bass­wood
Eco-certified Cedar
Eco-certified Bass­wood
Eco-certified Cedar
Electrical120V 1350W 15A120V 1760W 15A120V 2035W 20A
Heaters6 Heaters9 Heaters10 Heaters
WeightUp to 448 lbsUp to 492Up to 598 lbs

Signature® Features

Solocarbon® Far Infrared Technology – Most Effective Far Infrared Heat Available

If you are purchasing a sauna for health benefits, the single most important element to consider is heater emissivity which determines how efficient infrared heat is conducted and emitted. If a sauna is not efficient at emitting infrared, you are not receiving the benefits of infrared! Generic carbon blend heaters are less than 85% effective. Solocarbon® far infrared heaters are 95% efficient at emitting infrared. When researching infrared saunas, always ask for emissivity data. This determines the quality of infrared heat.

Clinically-tested to lower blood pressure, increase core temperature and aid in weight loss

Solocarbon® heating technology is the foundation for all of our sauna products. It is the only heater on the market clinically shown to raise core temperature, lower blood pressure and aid in weight loss. This is one of the reasons more doctors recommend Sunlighten over any other sauna brand. Click here for reviews from wellness experts.

Ultra low EMF technology

Environmentally approved for safety with safe, ultra low EMF technology.
When purchasing a sauna, your top two priorities should be safety and effectiveness. All Sunlighten saunas are completely safe and always have been. Our proprietary heater design virtually eliminates all EMF and steel conduit electrical shielding makes Solocarbon® heaters as safe as possible. Solocarbon® panels contain a unique proprietary blend of materials that are 100% quality controlled by Sunlighten™. This means – unlike other saunas on the market – we can ensure the safety & effectiveness of each individual heater. Solocarbon® panels are heat-sealed, meaning no wires or glues are used, so there is no release of unhealthy gases during heating. With the safest, clinically-tested technology available, it is no wonder our infrared saunas are the most trusted on the planet.

Patented Magne-Seal™ Assembly

Only Sunlighten offers a patented magnetic locking system, eliminating the need for unsightly clips to hold the sauna together. Benefits include:

  • Easy Assembly – walls easily snap together, making it a cinch to set up and take down
  • Prolonged Cabinetry – adapts as wood expands & contracts with heat to prevent cracks or warping
  • Heat Protection – better seals between the walls of your sauna mean heat stays in and cold air stays out
  • Durability – as strong and durable as clips, buckles or screws, but invisible to the eye so there’s nothing unsightly about your sauna
  • Double Reinforcement – combined with the hidden U-shaped clip and interlocking halo roof, the construction of your sauna could not be more secure.
Beautiful craftsmanship with solid wood construction

With 100% quality-controlled manufacturing, you will not find another far infrared sauna as beautiful. Signature saunas have solid tongue and grove construction, 33% thicker wood than the industry standard and are commercial grade for extra durability.
Eco-friendly Wood Options
Signature saunas are made from PEFC-Certified wood that is sustainable, adaptable to high temperatures and extremely durable making it ideal for high traffic use. The cottonwood exterior has a light cherry finish and is sourced in the United States.

Deluxe Bench for Comfort & Multi-Function

The Signature bench is made of solid wood, 19″ high and 20″ deep (10% deeper than industry standard) for ultimate comfort. Benches are also removable to allow for full use of floor space for stretching or yoga poses.

Programmable timer & continuous use options for convenience

36 Hour Programmable Timer
Preset your Signature infrared sauna with our industry-leading 36 hour programmable timer or leave on for continuous use. Your Sunlighten sauna will be heated & ready to go precisely when you want it! Your Signature sauna also features a exterior power button so you can easily turn on your sauna without stepping inside.

Superior Blaupunkt Sound System

Bask in the superior sound from our Blaupunkt AM/FM CD player with MP3 input. Choose your favorite tunes, close your eyes, and be taken away by the crystal clear music from this upgraded sound system.

Energy-Efficient LED Lighting

Energy-efficient LED lights outline the exterior of the Signature® Series from the halo roof, highlighting its beautiful craftsmanship.

Soft Interior Lights

Soft interior lights add an intimate ambience and come Chromotherapy-ready for those choosing this option.

Retractable Air Vent

The retractable air vent keeps fresh air circulating throughout the cabin, and can be easily closed for those wanting to optimize the heat from our infrared heaters.

Online wellness community and biofeedback tools track progress over time

Biofeedback accessories take sauna therapy to the next level. Track your heart rate and calories burned during sauna sessions & wirelessly send data to your personal wellness website – – to monitor progress over time. This dynamic website is designed to help Sunlighten customers achieve their wellness goals with daily guidance.

  • Track sauna sessions and other cardiovascular activity
  • Connect with other Sunlighten customers with similar goals
  • Follow fitness plans with easy how-to-videos
  • Plan meals and get nutritional recipes
  • Get free advice from our wellness coaches 24/7

Have peace of mind with a 5-year warranty on wood, controls and heaters.

  • 5-Year Warranty on Wood and Electronics
  • 1-Year Warranty on Stereo

Signature® Options

SO Sound Vibrational Therapy

SO Sound™ acoustic resonance therapy is our most popular sauna enhancement! When installed under the bench, the SO Sound system combines the healing effects of sound and vibration to balance the brainwaves bringing the body to a deeper state of relaxation. Add another layer of experience to your Sunlighten Sauna! Feel a full body musical massage as the vibrations of your favorite music resonate throughout your sauna.

Seamless Chromotherapy

Enjoy the healing benefits of color and light therapy to help your body re-establish its natural balance. Comes with an easy-to-use remote control, and can be added to any of our wooden sauna models.

Wood options

Eco-certified Cottonwood

Custom-Fit Waterproof Cover

Designed specifically for outdoor use, our custom waterproof covers not only protect your sauna from the elements, but also keep your warranty intact.