Fast Heating, Up to 149°F
2-5 Day Delivery
Easy Assembly
Trusted by thousands!
Meet Caldera™ by Relaxe.
Born from fire.
From the makers of the #1-rated massage chair by U.S. News, the Caldera™ is a full-spectrum infrared sauna inspired by the earth’s most powerful natural force: engineered to renew your body from the inside out. Detox deeper, sleep better, and feel new again. Watch the complete walkthrough below.
Relaxe Caldera™ Full Spectrum Infrared Sauna With Red Light
2-5 Day U.S Delivery & 1 Year Trial Offer
LumaPanel™ Full Body Red Light Therapy Panel ($899 Value): The Caldera™ sauna combines 660 nm red light with 850 nm near-infrared wavelengths to deliver full-spectrum recovery benefits. Red light helps support collagen production and skin clarity, while near-infrared light penetrates deeper to promote muscle recovery, reduce joint stiffness, and enhance circulation — all in a single, dual-spectrum session. (Includes protective glasses. For best results, position yourself within 0–24" of the panel.)
Low EMF, Hemlock Frame, and Tempered Door: The Relaxe Sauna was prioritized for safety, with low EMF ratings. The wooden frame is crafted of selected Canadian hemlock, which is deformation-resistant and moisture-resistant, ensuring long-lasting durability. Furthermore, it adopts a premium tempered door, which is scratch-resistant and can effectively retain heat while preventing explosion, ensuring safe use.
CalderaCore™ Thermal Engine: The Relaxe Caldera Sauna boasts far infrared technology with 9 carbon heaters, which emit gentle and therapeutic heat waves that penetrate deep into your body. There are also heaters beneath the bench and underfoot, delivering full-spectrum heat to your legs and feet. In addition, with its 64-149 °F temperature adjustment and 0-90 min timer adjustment, you can easily customize your sauna experience according to your preference.
SmartSync™ Controls and Immersive Sauna Experience: The Relaxe Sauna is equipped with dual intelligent control panels, bringing convenience for operation both inside and outside the sauna. And the inside panel features APS function with 3 sound effects (low/medium/high) and mute function. Furthermore, the inside panel features a USB input, MP3 play, and FM radio, accompanied by stereo dual speakers that can be connected via Bluetooth. And the wooden handle with groove could securely hold your electronic device.
Large Space and Safety Design: The Relaxe Sauna (one person) measures 36" x 43" x 75" (L x W x H), which comfortably accommodates one person. The two person sauna is 47" L × 43" W × 75" H. It features an oxygen ionizer to purify the interior air, which may promote smoother breathing. And there are intelligent temperature sensor probes to monitor the heat in real-time, ensuring safety. Finally, the top vent window allows for proper ventilation.
Medical Chromotherapy: The Relaxe Sauna features 4 light strips with 7 static colors and 1 dynamic lighting modes, creating a chromotherapy effect which may support mental well-being and stress relief. Additionally, it includes a magazine rack, towel rack, cup holder, and a foldable tray for easy access to your essential items.
Easy Delivery, Assembly & Returns: Your Caldera™ arrives in clearly labeled, flat-packed boxes that easily fit through standard doorways. Two people and 45 minutes are all it takes to put together the sauna. If, at any point in the next 365 days, you decide the daily sweat ritual isn’t life-changing, just let us know. We’ll schedule a pickup from your home and issue a full refund less return shipping costs. Try it, risk-free! We know you'll love it.
Comprehensive 3 Year Warranty + Technician Service: Full coverage on heaters, electronics, and wood panels—free replacement parts and fast, US-based technician support for three full years.
1. Reduce Risk of Cardiovascular Disease and Mortality: Regular sauna use has been linked to a 40% reduction in all-cause mortality and a 50% lower risk of cardiovascular disease mortality, according to a 20-year longitudinal study published in JAMA Internal Medicine. Infrared therapy stimulates cardiovascular function by increasing heart rate and improving blood vessel elasticity, mimicking the effects of moderate exercise. This can help reduce blood pressure, improve circulation, and support long-term heart health.
2. Accelerate Muscle Recovery and Pain Relief: Infrared therapy penetrates deep into tissues, promoting blood flow and oxygenation while reducing inflammation. A study in the Journal of Clinical Rheumatology found that infrared sauna use significantly alleviated pain and stiffness in patients with rheumatoid arthritis and chronic conditions like fibromyalgia. Combined with red light therapy, which enhances ATP production in cells, this sauna optimizes recovery after exercise and aids in the relief of chronic muscle and joint pain.
3. Boost Skin Health and Cellular Regeneration: Red light therapy’s wavelengths (660 nm and 850 nm) are clinically proven to increase collagen production and improve skin elasticity, as demonstrated in studies published in Photomedicine and Laser Surgery. Near-infrared light penetrates deeper layers of the skin, repairing tissue damage, reducing inflammation, and promoting cellular regeneration. Regular use has been shown to improve skin tone, reduce wrinkles, and accelerate healing of minor skin conditions.
4. Enhance Detoxification and Immune Support: Sweating induced by infrared heat is one of the most efficient ways to detoxify the body. Research shows that saunas help remove harmful toxins such as heavy metals (mercury, lead) and environmental pollutants (BPA), while also promoting immune health. Far-infrared heat increases lymphatic flow and supports white blood cell production, which helps the body fight off infections more effectively.
5. Improve Longevity and Quality of Life: In addition to reducing mortality risks, consistent sauna use is associated with improved physical and mental well-being. An early observational Finnish study published in Annals of Medicine found that regular sauna bathing may reduce the risk of dementia and Alzheimer’s disease by up to 65%. This is attributed to its ability to reduce inflammation and oxidative stress while improving vascular health.
6. Relieve Stress and Promote Better Sleep: According to Mayo Clinic, Infrared saunas are known to decrease cortisol levels (the body’s stress hormone) while increasing the production of beta-endorphins, serotonin, and melatonin. This creates a sense of relaxation and promotes a deeper, more restorative sleep. Studies show that red light therapy enhances sleep quality by regulating circadian rhythms and supporting the release of calming neurotransmitters.
7. Support Metabolism and Weight Loss: The infrared heat elevates your core body temperature, stimulating a metabolic response. Research in Scientific Reports shows that sauna use increases calorie burn, supports weight management, and improves insulin sensitivity, helping to regulate blood sugar levels.
Please note that these are studies related to general sauna use, and not Relaxe specifically. Please consult with a medial professional before using any of our products. The sauna is not intended to diagnose, treat, cure, or prevent any medical condition.
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Customers love it!
Check our top fans out below.
- JMJennifer M.Verified BuyerReviewingRelaxe Caldera™ Full Spectrum Infrared Sauna With Red Light Therapy PanelI recommend this productChoose Product Standouts Relaxation, Nice Design, Soreness ReliefReason For Buying Sauna Stress Relief , Longevity, General Wellness, Soreness, DetoxificationFrequency Of Use DailyRated 5 out of 5 starsRelax in the Sauna
I absolutely love this sauna. I have a condition that causes my leg muscles to tighten and after using this I feel so much better and my body is loosened up.
The directions are not the best but we figured it out.
- EOEric O.Verified BuyerReviewingRelaxe Caldera™ Full Spectrum Infrared Sauna With Red Light Therapy PanelI recommend this productChoose Product Standouts Nice Design, Easy Assembly, Soreness Relief , RelaxationReason For Buying Sauna Detoxification, General Wellness, Longevity, Stress Relief , SorenessFrequency Of Use Multiple Times A WeekRated 5 out of 5 starsA Great Investment for our Family
This has been a wonderful investment for me and my family. We use the red light therapy daily. The sauna was easy to assemble and set was a breeze. Our three boys play sports for high school and are benefiting tremendously with our purchase of the relaxe caldera sauna. Thank you!
- CConnorReviewingRelaxe Caldera™ Full Spectrum Infrared Sauna With Red Light Therapy PanelI recommend this productChoose Product Standouts Nice Design, Easy Assembly, Soreness ReliefReason For Buying Sauna Skincare, Stress ReliefFrequency Of Use Multiple Times A WeekRated 5 out of 5 starsDon’t Underestimate This Sauna
I’ve been extremely impressed with the Relaxe Caldera sauna from start to finish. Shipping was fast and everything arrived well packaged and clearly labeled. With two people, it came together quickly and without frustration, which I really appreciated for something of this size.
What surprised me most was the heat. I had read that infrared saunas feel gentler, but this gets way hotter than I expected in the best way. It warms up evenly and quickly, and you start sweating fast without it feeling overwhelming or uncomfortable.
The red light therapy panel is a standout feature. It feels powerful, looks premium, and adds a whole extra layer to the experience. The interior lighting, speakers, and overall design make it feel like a high-end spa, not just a sauna. It honestly looks incredible in the space and feels very well built.
I’m very glad I went with this sauna and would recommend it to anyone looking to upgrade their wellness routine at home.
- MDMarty D.Verified BuyerReviewingRelaxe Caldera™ Full Spectrum Infrared Sauna With Red Light Therapy PanelI recommend this productChoose Product Standouts Nice Design, Easy Assembly, Soreness Relief , RelaxationReason For Buying Sauna Detoxification, General Wellness, SkincareFrequency Of Use DailyRated 5 out of 5 starsVery impressive sauna for money.
This is our third sauna in 20 years and found the single person relaxe caldera ann excellent choice. The sauna is chocked full of great features.
Let’s start with the assembly. I am very capable when it comes to completing an assembly like this. Once I identified the parts, the assembly came together rather quickly. I would suggest to the manufacturer to provide crisp photos of the components. Book was a bit bury.
Total time from box the operational 2-3 hours part time.
The use model is fantastic. Set the top temp, set the time and the ambient lighting and you are good go. Add the sauna to your phones Bluetooth and play music, podcasts and books!! The Himalayan salt tray is a super addition. The red light therapy panel works so well and in the right place.
We have loaded the app and utilize its rich features to control the sauna.
Lastly, we were surprised to find that bringing our phone or tablet into the sauna while getting a good sweat provided no high heat shut down to the devices. This was a fantastic find.
One suggestion would be for the manufacturer to add a Wi-Fi connection. This way you’d be able to turn this on when you’re away from your home and then warm it up as you’re coming back from a long walk bike ride swim run whatever you are doing that day.
Overall, we would give the sauna two thumbs up!!👍👍
- RBReese B.Verified BuyerReviewingRelaxe Caldera™ Full Spectrum Infrared Sauna With Red Light Therapy PanelI recommend this productChoose Product Standouts Nice Design, Easy Assembly, RelaxationReason For Buying Sauna General Wellness, Detoxification, Skincare, Longevity, Stress ReliefFrequency Of Use DailyRated 5 out of 5 starsBetter than expected
Construction and setup was quick and easy. We used it immediately, and are loving the results. Great product! Would highly recommend!
Frequently Asked Questions
Color: Natural
Material: Canadian Hemlock, Tempered Glass, Carbon Heater
Overall Dimensions: 36" L × 43" W × 75" H
Size of the Door: 19.5" W × 65" H
Input Voltage: 120 V / 15 A (standard 5‑15 R wall outlet)
Adjustable Temperature: 64-149 °F
Timer: 0-90 Min
Net Weight: 271.5 lbs
Red Light Therapy Panel Size: 36" x 8.5" x 25.5" (L x W x H)
LED Power 900 W
Number of LED Lights: 180
Wave Length: 660 nm/850 nm
Color: Natural
Material: Canadian Hemlock, Tempered Glass, Carbon Heater
Overall Dimensions: 47" L × 43" W × 75" H
Size of the Door: 19.5" x 65" (L x W)
Input Voltage: 120 V / 20 A (NEMA 5‑20P) dedicated circuit
Adjustable Temperature: 64-149 °F
Timer: 0-90 Min
Net Weight: 340 lbs
Red Light Therapy Panel Size: 36" x 8.5" x 25.5" (L x W x H)
LED Power 900 W
Number of LED Lights: 180
Wave Length: 660 nm/850 n
Color: Natural Material: Canadian Hemlock, Tempered Glass, Carbon Heater
Overall Dimensions: 84" L × 44" W × 75" H Size of the Door: 22" x 74" (W x H)
Input Voltage: 240 V / 15 A (Requires dedicated 240V plug-in circuit)
Adjustable Temperature: 64–149 °F (18–65 °C) Timer: 0–90 Min
Net Weight: Approx. 490 lbs Red Light Therapy Panel Size: 36" x 8.5" x 25.5" (L x W x H)
LED Power: 900 W Number of LED Lights: 180 Wave Length: 660 nm / 850 nm
Extremely safe.
This sauna is equipped with:
- Intelligent temperature sensors to monitor heat in real-time.
- Oxygen ionizer to purify air for better breathing.
- Tempered glass door for added safety.
Additionally, it complies with standard household EMF radiation levels. Low EMF is critical for sauna safety.
The sauna is designed for simple assembly and comes with a detailed installation guide. It arrives in three-four boxes, which include all necessary components and a screw kit (located in Box 2). Most users can assemble it within easily with basic tools.
The internal height of the sauna is 75 inches, making it perfect for seated use. It works well for taller people. It's designed as a compact, space-saving model where users crouch slightly when entering and sit comfortably during their session. While taller users may need to duck when entering, the sauna is ideal for single-person, seated use and provides ample room for relaxation.
The sauna's adjustable temperature ranges from 64°F to 149°F. It typically takes about 10–15 minutes to reach optimal heat for most users.
Yes! The sauna comes with a detachable red light therapy panel, offering 660nm red light for collagen production and 850nm near-infrared light for muscle recovery and joint pain relief.
The sauna is constructed from premium Canadian Hemlock wood, known for its durability, moisture resistance, and natural aesthetics. It also features a tempered glass door that is heat-retaining, scratch-resistant, and explosion-proof.
We cut out the middlemen. We ship straight from our warehouse to you, cutting out any retailer or Amazon-type fees.
We ship all of our products from our warehouses located in California, it takes 2-4 days for delivery on average. Shipping is free.
There's only a few simple steps to start your relaxation journey! Just choose the Add to Cart Option on this page. This will take you through our secure checkout process. We will then begin working to get your order shipped to you. You will receive a tracking number by email. We do allow cancellations on unshipped orders; however, a 5% cancellation fee applies to cover non-refundable payment processing costs. Please place your order only when you’re fully ready, as inventory is limited and cancellation slots slow down fulfillment for other customers.
We're so confident you'll love your Relaxe Sauna that we offer a 365-day home trial. If you're not completely satisfied, return it for a full refund of the sauna price — no restocking fees. You only cover return shipping costs. Your purchase includes a complimentary 3-year warranty covering any manufacturer defects, with technician services included. We've spent years perfecting this sauna, and we stand behind it fully.
Doctor Stamp of Approval
Hear from Relaxe customers!
The ordering process was super easy, I paid in a secure method via PayPal, and it was shipped within a couple of days [...] highly recommend it!"
Dr. Tara Scott
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Complete Your Recovery With The Relaxe Massage Chair
400+ 5 Star Reviews 👇🏻
#1 Voted Massage Chair By Sports Illustrated, Mens Journal, and U.S News & World Report.
Experience the deepest full body massage there is with the Relaxe Shiatsu Massage Chair. With additional features such as zero-gravity design, heating, and bluetooth technology, enjoy soothing relief and rid your body of occasional muscle tension and pain.
- Zero Gravity & Heating
- Full Customizable Body Massage
- 53 inch SL-Track
- Free Shipping & No Installation Required
- Affordable Financing
- 365 Day Trial & 3 Year Warranty
