Experience Ultimate Wellness with the S-840 Series 4-Person Infrared Sauna
Imagine stepping into a sanctuary of warmth, relaxation, and rejuvenation—a personal escape where stress melts away, and wellness takes center stage. The S-840 Series 4-Person Low EMR/Low EF Infrared Sauna offers just that, combining spacious luxury with state-of-the-art infrared technology to deliver an unparalleled sauna experience. Whether you seek deep relaxation, detoxification, or an immersive infrared therapy session, this sauna is designed to provide all the benefits of a premium infrared sauna while maintaining an eco-friendly and health-conscious build.
Spacious Comfort for an Elevated Sauna Experience
One of the standout features of the S-840 Series is its generous size. Designed to comfortably seat four people, this sauna offers ample space for you and your loved ones to unwind together. With its full glass front and floor-to-ceiling tempered glass doors, the sauna provides an open and non-claustrophobic ambiance, perfect for those who appreciate both luxury and a contemporary aesthetic.
Want to personalize your seating arrangement? The versatile bench insert allows you to transform the two long benches into a U-shaped seating area, increasing the seating capacity to five or providing enough room for two people to lie down comfortably. This level of adaptability ensures that whether you’re enjoying a solo session or sharing the experience with others, you can do so in total comfort.
Low EMR/Low EF Technology: The Healthiest Infrared Sauna Available
Unlike traditional saunas, infrared saunas use radiant heat to penetrate deep into the body, promoting relaxation and health benefits without the excessive heat of steam-based models. However, not all infrared saunas are created equal. The S-840 Series boasts by far the lowest EMR (Electromagnetic Radiation) and EF (Electric Fields) levels in the industry, even exceeding Sweden’s stringent health standards.
Why does this matter? High EMR and EF levels have been linked to potential health risks over time. With the S-840 Series, you can fully enjoy the benefits of infrared therapy while resting assured that you are in a low-exposure, safe, and health-conscious environment.
Innovative EvenHeat™ Technology: No More Cold Spots!
One of the most common complaints about saunas is uneven heating. Some saunas develop “hot spots,” while others leave certain areas colder than others. This sauna eliminates that issue with its EvenHeat™ technology, ensuring a perfectly uniform heat distribution from wall to wall. Every inch of the interior is designed to immerse you in soothing infrared warmth, providing a consistently enjoyable session without the discomfort of fluctuating temperatures.
Superior Craftsmanship: Beauty, Durability, and Eco-Friendly Materials
A high-quality sauna is not only about performance but also about aesthetics and durability. The S-840 Series is crafted with Canadian Hemlock—a wood prized for its sturdy quality, natural beauty, and resistance to warping. It is sealed with a bio-friendly, furniture-grade finish, making it both an eco-conscious and long-lasting investment for your home.
Additionally, the matte black metallic floor emitter and in-bench far-infrared emitter offer a seamless blend of style and functionality. These advanced emitters provide complete head-to-toe comfort, ensuring that no part of your body is left out of the infrared heat therapy.
Easy Assembly: Enjoy Your Sauna Within an Hour of Delivery
Saunas often come with complex installation requirements, but that’s not the case with the S-840 Series. This model features prefabricated panels, allowing for an easy, tool-free assembly. In under an hour, you can go from unpacking the sauna to experiencing its full detox and relaxation benefits.
Furthermore, the sauna runs on a simple 120-volt, 20-amp plug-in connection, eliminating the need for special wiring or complicated electrical work. All you need is a dedicated outlet, and you’re ready to go!

Advanced Features for the Ultimate Relaxation Experience
What sets this infrared sauna apart is its combination of luxurious features that enhance both relaxation and functionality:
1. Bluetooth® Sound System for an Immersive Audio Experience
The integrated Bluetooth® sound system allows you to connect your favorite device and enjoy soothing music, guided meditation, or even an audiobook while you unwind. The heat-resistant speakers ensure crystal-clear sound quality, making your sauna experience even more enjoyable.
2. Elegant LED Lighting for Mood Enhancement
Create the perfect atmosphere with the six-color LED lighting system. Whether you prefer a calming blue hue or a warm golden glow, the built-in color therapy system lets you set the mood to match your relaxation goals.
3. IL2 Control System: Manage Your Sauna from Anywhere
The InfraLogic2 (IL2) touchscreen control system makes operating your sauna effortless. Not only can you adjust temperature and session duration with ease, but you can also control your sauna remotely using the mobile app. Whether you want to preheat your sauna before a session or schedule regular detox sessions, the IL2 control system makes it incredibly convenient.
4. Full-Sized Calf Emitters for Targeted Infrared Therapy
Unlike most saunas, which focus only on upper-body heat exposure, the S-840 Series includes dedicated calf emitters. This ensures that your lower extremities receive the same level of infrared therapy, maximizing circulation benefits and muscle relaxation.
5. Unique Combination Door Handle & Towel Bar
A simple but thoughtful detail, the combination door handle and towel bar adds a touch of convenience to your sauna sessions. No more reaching for a towel across the room—it’s right where you need it!
The Many Health Benefits of Infrared Sauna Therapy
Owning an S-840 Series 4-Person Infrared Sauna is more than just a luxury—it’s an investment in your health and well-being. Regular sauna sessions can provide numerous benefits, including:
- Deep Detoxification: Sweating in an infrared sauna helps eliminate toxins, heavy metals, and impurities from the body.
- Pain Relief & Muscle Recovery: The deep-penetrating infrared heat relieves muscle tension, joint pain, and inflammation—ideal for athletes and those with chronic pain.
- Improved Circulation: Infrared heat stimulates blood flow, promoting better oxygenation of tissues and a healthier cardiovascular system.
- Stress Reduction & Mental Clarity: The combination of warmth, solitude, and relaxation helps lower cortisol levels, reducing stress and anxiety.
- Skin Health & Anti-Aging Benefits: Infrared sauna sessions can enhance collagen production, promoting smoother, younger-looking skin.
- Weight Management & Metabolism Boost: Increased sweating and heart rate mimic the effects of moderate exercise, aiding in calorie burning and weight loss.
Upgrade Your Home Wellness Experience Today!
The S-840 Series 4-Person Infrared Sauna is an excellent addition to any home, providing a luxurious, high-performance, and health-conscious solution for relaxation and wellness. Whether you want to unwind after a long day, support your fitness routine, or enjoy quality time with loved ones, this sauna is designed to elevate your lifestyle.
At Mountain Mist Pool and Spa, we are proud to offer this industry-leading infrared sauna to our customers. Contact us today to learn more about installation, pricing, and financing options, and take the first step toward transforming your home into a personal wellness retreat!
