{"product_id":"saunalife-model-s4-wood-fired-hot-tub-sl-models4","title":"Wood-Fired Hot Tub 6 Person Outdoor Spa – SaunaLife Model S4 Thermo-Spruce Luxury Soaking Tub","description":"\u003cp data-start=\"0\" data-end=\"39\"\u003eModel S4 Outdoor Wood-Burning Hot Tub\u003c\/p\u003e\n\u003cp data-start=\"41\" data-end=\"316\"\u003eThe SaunaLife SOAK-Series Model S4 represents a premium standard in wood-burning hot tub design, combining exceptional craftsmanship, efficiency, and luxury. It delivers a refined outdoor bathing experience built for relaxation, social gatherings, and long-term wellness use.\u003c\/p\u003e\n\u003chr data-start=\"318\" data-end=\"321\"\u003e\n\u003cp data-start=\"323\" data-end=\"358\"\u003eReady for Your Hot Tub Experience\u003c\/p\u003e\n\u003cp data-start=\"360\" data-end=\"766\"\u003eThe Model S4 wood-fired hot tub arrives completely assembled and is simple to set up. Its ergonomically shaped fiberglass interior comfortably accommodates up to 6 people, making it ideal for family use or hot tub gatherings. The interior surface is designed for easy cleaning, while the exterior is crafted from thermally enhanced spruce to provide superior weather resistance and long-lasting durability.\u003c\/p\u003e\n\u003chr data-start=\"768\" data-end=\"771\"\u003e\n\u003cp data-start=\"773\" data-end=\"816\"\u003eEngineered for Efficiency and Performance\u003c\/p\u003e\n\u003cp data-start=\"818\" data-end=\"1110\"\u003eDesigned and handcrafted in Northern Europe, the Model S4 is engineered for maximum heating efficiency. It reaches optimal bathing temperature in approximately 1\/3 of the time of traditional wood-fired hot tubs and requires no electrical connection, making it fully off-grid and eco-friendly.\u003c\/p\u003e\n\u003cp data-start=\"1112\" data-end=\"1629\"\u003eAt the core of the system is a self-cleaning corrugated stainless steel stove featuring dual heat compartments that transfer heat from smoke and reduce wood consumption by up to 50% compared to conventional designs. The system also superheats the air between the fiberglass lining and the wooden exterior to accelerate warming. A carefully engineered circulation system draws cooler water through a lower channel and redistributes it through an upper channel to maintain balanced water temperature throughout the tub.\u003c\/p\u003e\n\u003cp data-start=\"1631\" data-end=\"1825\"\u003eWith this design, the Model S4 can heat 304 gallons of water from 40°F (5°C) to 95°F (35°C) in approximately 1.5 to 2 hours, making it one of the fastest-heating wood-burning hot tubs available.\u003c\/p\u003e\n\u003chr data-start=\"1827\" data-end=\"1830\"\u003e\n\u003cp data-start=\"1832\" data-end=\"1869\"\u003eBuilt for Comfort and Long-Term Use\u003c\/p\u003e\n\u003cp data-start=\"1871\" data-end=\"2226\"\u003eThe interior features a thick dark grey contoured fiberglass lining that enhances comfort for up to 6 bathers. The exterior is constructed from Thermo-Spruce (lasting up to 2X longer than cedar), providing excellent thermal resistance and structural stability. The 1.65” thick tub surround is finished in black for a modern and durable outdoor appearance.\u003c\/p\u003e\n\u003cp data-start=\"2228\" data-end=\"2445\"\u003eMatching Thermo-Spruce steps provide safe and easy entry, while the insulated cover helps retain heat efficiently. A polished stainless steel chimney with protective cap ensures safe and reliable operation during use.\u003c\/p\u003e\n\u003chr data-start=\"2447\" data-end=\"2450\"\u003e\n\u003cp data-start=\"2452\" data-end=\"2487\"\u003eThermo-Spruce Material Advantages\u003c\/p\u003e\n\u003cp data-start=\"2489\" data-end=\"2645\"\u003eLasts up to 2X longer than Cedar\u003cbr data-start=\"2521\" data-end=\"2524\"\u003eSuperior thermal resistance (R-value)\u003cbr data-start=\"2561\" data-end=\"2564\"\u003eEco-friendly and stable for water use\u003cbr data-start=\"2601\" data-end=\"2604\"\u003eIdeal for long-term outdoor performance\u003c\/p\u003e\n\u003chr data-start=\"2647\" data-end=\"2650\"\u003e\n\u003cp data-start=\"2652\" data-end=\"2668\"\u003eSpecifications\u003c\/p\u003e\n\u003cp data-start=\"2670\" data-end=\"2731\"\u003eWeight: 595 lbs\u003cbr data-start=\"2685\" data-end=\"2688\"\u003eWidth \/ Depth: 79\" diameter\u003cbr data-start=\"2715\" data-end=\"2718\"\u003eHeight: 37\"\u003c\/p\u003e\n\u003cp data-start=\"2733\" data-end=\"2852\"\u003eCapacity: up to 6 bathers\u003cbr data-start=\"2758\" data-end=\"2761\"\u003eWater capacity: 304 gallons\u003cbr data-start=\"2788\" data-end=\"2791\"\u003eHeating time: approximately 1.5–2 hours (from 40°F to 95°F)\u003c\/p\u003e\n\u003chr data-start=\"2854\" data-end=\"2857\"\u003e\n\u003cp data-start=\"2859\" data-end=\"2880\"\u003eIncluded Components\u003c\/p\u003e\n\u003cp data-start=\"2882\" data-end=\"3195\"\u003eFully assembled hot tub\u003cbr data-start=\"2905\" data-end=\"2908\"\u003eThermo-Spruce tub surround (painted black, 1.65” thick)\u003cbr data-start=\"2963\" data-end=\"2966\"\u003eErgonomic fiberglass interior\u003cbr data-start=\"2995\" data-end=\"2998\"\u003eMatching Thermo-Spruce steps\u003cbr data-start=\"3026\" data-end=\"3029\"\u003eInsulated folding cover with marine-grade vinyl exterior\u003cbr data-start=\"3085\" data-end=\"3088\"\u003eIntegrated drainage tap\u003cbr data-start=\"3111\" data-end=\"3114\"\u003eStainless steel wood-burning heater\u003cbr data-start=\"3149\" data-end=\"3152\"\u003ePolished stainless steel chimney with cap\u003c\/p\u003e\n\u003chr data-start=\"3197\" data-end=\"3200\"\u003e\n\u003cp data-start=\"3202\" data-end=\"3397\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eThe SaunaLife Model S4 delivers a complete outdoor wellness solution, combining rapid heating performance, durable construction, and premium comfort for an elevated wood-fired hot tub experience.\u003c\/p\u003e\n\u003ch3\u003eResources\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0627\/7778\/6508\/files\/SL-_Limited_Lifetime_Warranty.pdf?v=1718805815\"\u003eWarranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SaunaLife","offers":[{"title":"Default Title","offer_id":47647245926630,"sku":"SL-MODELS4","price":5990.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0805\/1802\/1350\/files\/saunalife-hot-tub-saunalife-model-s4-wood-fired-hot-tub-1182032599.webp?v=1778434536","url":"https:\/\/infinitysaunas.com\/products\/saunalife-model-s4-wood-fired-hot-tub-sl-models4","provider":"Infinity Saunas","version":"1.0","type":"link"}