{"product_id":"thermora-eterna-4-person-outdoor-infrared-sauna-carbonized-composite-low-emf-bluetooth","title":"Thermora Eterna 4-Person Outdoor Infrared Sauna | Carbonized Composite, Low EMF \u0026 Bluetooth","description":"\u003csection class=\"product-intro\"\u003e\n\u003cp\u003eThe Thermora Eterna is a four-person outdoor infrared sauna built for households that want a shared wellness space without compromising on build quality or features. Constructed from carbonized wood-plastic composite — a material that combines the appearance of natural wood with the durability of food-grade plastic — this sauna is engineered to resist warping, cracking, moisture, mold, and insects over a service life rated at 10-plus years. Six carbon crystal heating panels deliver even, 360-degree infrared warmth, while integrated chromotherapy lighting and Bluetooth speakers round out the experience.\u003c\/p\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"product-why-choose\"\u003e\n\u003ch2\u003eWhy Customers Choose This Sauna\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSeats up to four people — suitable for family or shared use\u003c\/li\u003e\n\u003cli\u003eCarbonized composite construction rated for 10+ years of outdoor service\u003c\/li\u003e\n\u003cli\u003eSix carbon crystal infrared panels with low EMF output\u003c\/li\u003e\n\u003cli\u003e360-degree surround heating for even warmth throughout the cabin\u003c\/li\u003e\n\u003cli\u003eGambrel (hillside) roof design for effective rain and snow drainage\u003c\/li\u003e\n\u003cli\u003e7-color chromotherapy LED lighting with built-in control panel\u003c\/li\u003e\n\u003cli\u003eIntegrated Bluetooth stereo speakers and eye-care reading light\u003c\/li\u003e\n\u003cli\u003e2-year full warranty; 5-year warranty on carbon crystal heating panels\u003c\/li\u003e\n\u003cli\u003eFree shipping within the contiguous United States\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"product-highlights\"\u003e\n\u003ch2\u003eProduct Highlights\u003c\/h2\u003e\n\n\u003cdiv class=\"highlight-item\"\u003e\n\u003ch3\u003eCarbonized Wood-Plastic Composite Construction\u003c\/h3\u003e\n\u003cp\u003eThe cabin is built from a carbonized composite material that combines the natural texture of wood with the structural resilience of food-grade plastic. This construction resists warping, cracking, moisture absorption, mold growth, and insect damage — making it a practical choice for permanent outdoor installation.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"highlight-item\"\u003e\n\u003ch3\u003eSix Carbon Crystal Infrared Heating Panels\u003c\/h3\u003e\n\u003cp\u003eSix carbon crystal panels are positioned to provide 360-degree surround infrared heat throughout the cabin. The system operates at 1750W on a standard 120V\/60Hz circuit and is designed for low EMF output.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"highlight-item\"\u003e\n\u003ch3\u003eGambrel Roof Design\u003c\/h3\u003e\n\u003cp\u003eThe classic gambrel (hillside) roof profile is engineered for effective drainage of rain and snow, reducing standing water and extending the life of the exterior finish across a wide range of climates.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"highlight-item\"\u003e\n\u003ch3\u003e7-Color Chromotherapy Lighting\u003c\/h3\u003e\n\u003cp\u003eThe built-in control panel lets you cycle through seven LED color options, allowing you to customize the ambiance of each session. Chromotherapy lighting is a standard feature in professional spa environments.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"highlight-item\"\u003e\n\u003ch3\u003eBluetooth Stereo Speakers\u003c\/h3\u003e\n\u003cp\u003eIntegrated Bluetooth speakers connect wirelessly to your device so you can listen to music, podcasts, or guided audio during your session without additional equipment.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"highlight-item\"\u003e\n\u003ch3\u003eEye-Care Reading Light\u003c\/h3\u003e\n\u003cp\u003eA dedicated reading light is included for use during lower-intensity sessions, adding a practical convenience feature for those who prefer to read or relax with ambient lighting.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"highlight-item\"\u003e\n\u003ch3\u003eExtended Warranty Coverage\u003c\/h3\u003e\n\u003cp\u003eThe Thermora Eterna includes a 2-year full warranty and a 5-year warranty specifically covering the carbon crystal heating panels — one of the more comprehensive warranty packages available in this product category.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"product-specifications\"\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacity:\u003c\/strong\u003e 4 persons\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction Material:\u003c\/strong\u003e Carbonized wood-plastic composite\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Service Life:\u003c\/strong\u003e 10+ years\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeating Technology:\u003c\/strong\u003e Carbon crystal far-infrared panels\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Heating Panels:\u003c\/strong\u003e 6\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEMF Rating:\u003c\/strong\u003e Low EMF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Output:\u003c\/strong\u003e 1750W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical:\u003c\/strong\u003e 120V \/ 60Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterior Dimensions:\u003c\/strong\u003e 39.4 x 33.5 x 71.7 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoof Style:\u003c\/strong\u003e Gambrel (hillside)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLighting:\u003c\/strong\u003e 7-color chromotherapy LED + eye-care reading light\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAudio:\u003c\/strong\u003e Integrated Bluetooth stereo speakers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 2-year full warranty; 5-year warranty on carbon crystal panels\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e SAK70182\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping:\u003c\/strong\u003e Free within the contiguous United States; ships within 1–3 business days; estimated delivery 5–10 business days\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"product-ideal-for\"\u003e\n\u003ch2\u003eIdeal For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHouseholds looking for a shared outdoor sauna that accommodates multiple users at once\u003c\/li\u003e\n\u003cli\u003eHomeowners who want a permanent outdoor installation with long-term durability\u003c\/li\u003e\n\u003cli\u003eThose prioritizing low-EMF infrared technology in a larger-capacity sauna\u003c\/li\u003e\n\u003cli\u003eBuyers seeking an extended warranty on heating components for added peace of mind\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"product-important-info\"\u003e\n\u003ch2\u003eImportant Information\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation Surface:\u003c\/strong\u003e This sauna requires a flat, stable, level surface such as a concrete pad, deck, or patio. It is designed for outdoor use only and should not be installed indoors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical Requirements:\u003c\/strong\u003e The sauna operates on a standard 120V\/60Hz circuit at 1750W. A dedicated circuit is recommended. Consult a licensed electrician before installation to confirm compliance with local electrical codes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeather Protection:\u003c\/strong\u003e While the carbonized composite construction is designed for outdoor durability, using a weatherproof cover when the sauna is not in use is recommended to preserve the exterior finish.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLocal Permits:\u003c\/strong\u003e Building permit requirements vary by municipality and HOA. Check with your local building department before installation to determine whether a permit is required in your area.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty Terms:\u003c\/strong\u003e The 2-year full warranty and 5-year panel warranty cover manufacturing defects. Coverage does not extend to damage caused by improper installation, misuse, or conditions outside the product's rated specifications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"product-faq\"\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cdetails class=\"faq-item\"\u003e\n\u003csummary\u003eHow many people does this sauna fit?\u003c\/summary\u003e\n\u003cp\u003eThe Thermora Eterna is designed for up to four people. The interior dimensions are 39.4 x 33.5 x 71.7 inches, providing comfortable space for shared use.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"faq-item\"\u003e\n\u003csummary\u003eWhat makes carbonized composite different from standard wood?\u003c\/summary\u003e\n\u003cp\u003eCarbonized wood-plastic composite combines the natural appearance of wood with the structural properties of food-grade plastic. The result is a material that resists warping, cracking, moisture, mold, and insects more effectively than untreated wood, with a rated service life of 10+ years.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"faq-item\"\u003e\n\u003csummary\u003eWhat electrical connection does this sauna require?\u003c\/summary\u003e\n\u003cp\u003eThe sauna operates on a standard 120V\/60Hz circuit at 1750W. We recommend a dedicated circuit and suggest consulting a licensed electrician before installation to ensure compliance with local codes.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"faq-item\"\u003e\n\u003csummary\u003eWhat is the EMF level of the heating panels?\u003c\/summary\u003e\n\u003cp\u003eThe six carbon crystal infrared panels are designed for low EMF output. Specific EMF measurements are included in the product documentation provided with your order.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"faq-item\"\u003e\n\u003csummary\u003eHow long does shipping take?\u003c\/summary\u003e\n\u003cp\u003eThis sauna ships free within the contiguous United States. Orders are processed and shipped within 1–3 business days, with estimated delivery in 5–10 business days. Tracking information is provided once your order ships.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"faq-item\"\u003e\n\u003csummary\u003eWhat does the warranty cover?\u003c\/summary\u003e\n\u003cp\u003eThe Thermora Eterna includes a 2-year full warranty covering defects in materials and workmanship, plus a 5-year warranty specifically on the carbon crystal heating panels. Warranty coverage does not apply to damage from improper installation or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"faq-item\"\u003e\n\u003csummary\u003eDo I need a permit to install this sauna?\u003c\/summary\u003e\n\u003cp\u003ePermit requirements vary by location. We recommend checking with your local building department or HOA before installation to determine whether a permit is required in your jurisdiction.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"faq-item\"\u003e\n\u003csummary\u003eCan this sauna be used in cold or snowy climates?\u003c\/summary\u003e\n\u003cp\u003eYes. The gambrel roof is designed for effective rain and snow drainage, and the carbonized composite construction is built to withstand a wide range of outdoor weather conditions.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"product-closing\"\u003e\n\u003cp\u003eThe Thermora Eterna is a durable, well-specified four-person outdoor infrared sauna backed by one of the stronger warranty packages in its category. Free US shipping and a straightforward assembly process make it a practical choice for homeowners ready to add a dedicated outdoor wellness space. If you have questions before purchasing, our team is here to help.\u003c\/p\u003e\n\u003c\/section\u003e\n\n\u003cp style=\"text-align: center; font-size: 0.8em; color: #888; margin-top: 2em;\"\u003eThis product is not intended to diagnose, treat, cure, or prevent any disease or medical condition. Consult your healthcare provider before use if you have any health concerns or pre-existing conditions.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How many people does this sauna fit?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The Thermora Eterna is designed for up to four people. 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