{"product_id":"cozy-heat-sw-thru-wall-sauna-stove","title":"Cozy Heat SW Thru-Wall Sauna Stove","description":"\u003cp\u003eThe \u003cstrong\u003eCozy Heat SW TW Thru-Wall Wood-Burning Sauna Stove\u003c\/strong\u003e is a premium wood-fired heater designed for sauna lovers who want clean-burning performance and the convenience of through-the-wall loading. Hand-crafted in Estonia, where sauna bathing is a national tradition, the SW TW lets you feed the firebox from outside the sauna while delivering mild, long-lasting heat and rich steam over a large stone mass. Its efficient burn technology, German BIMSCH certification, and contemporary vertical design make this stove a powerful upgrade for traditional sauna rooms.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThru-wall wood-burning sauna stove\u003c\/strong\u003e with firebox loading from outside the sauna\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModern vertical body\u003c\/strong\u003e that saves floor space and enhances the look of custom sauna builds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean-burning combustion\u003c\/strong\u003e with smoke gases up to six times cleaner than many traditional wood stoves\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-efficiency design\u003c\/strong\u003e that uses approximately 25 to 40 percent less firewood than comparable sauna stoves\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge stone capacity\u003c\/strong\u003e for deep heat storage and soft, long-lasting löyly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFloor-mounted thru-wall installation\u003c\/strong\u003e ideal for new builds and serious sauna enthusiasts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesigned and engineered in Estonia\u003c\/strong\u003e for performance, durability, and authentic sauna heat\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eRequired Components\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSauna Stones:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e12 kW:\u003c\/strong\u003e Minimum \u003cstrong\u003e265 lbs\u003c\/strong\u003e of sauna stones\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e18 kW:\u003c\/strong\u003e Minimum \u003cstrong\u003e353 lbs\u003c\/strong\u003e of sauna stones\u003c\/li\u003e\n\u003c\/ul\u003e\nUse natural, angular sauna stones such as olivine or peridotite in the 10 to 15 cm range. We recommend ordering an extra box of stones so you can hand-select the best shapes for airflow, fit, and steam quality.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChimney System:\u003c\/strong\u003e A compatible, code-compliant wood-burning sauna chimney and flue kit is required for safe installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCozy Heat SW TW thru-wall wood-burning sauna stove (12 kW or 18 kW model)\u003c\/li\u003e\n\u003cli\u003eOuter heater frame for thru-wall installation\u003c\/li\u003e\n\u003cli\u003eHeater body with stone basket\u003c\/li\u003e\n\u003cli\u003eFirebox and heater door with glass viewing window\u003c\/li\u003e\n\u003cli\u003eCleaning hatch and ash box\u003c\/li\u003e\n\u003cli\u003eConnection components for chimney interface (per manufacturer kit)\u003c\/li\u003e\n\u003cli\u003eInstallation and Operation Manual\u003c\/li\u003e\n\u003cli\u003e2-year manufacturer warranty (residential use)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications: Cozy SW TW 12 kW\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eCozy SW-Thru-Wall 12 (SW TW 12 kW)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eHeater Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eWood-burning thru-wall sauna stove\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003ePower Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e12 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eSauna Room Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e210 to 423 cu ft (approximately 6 to 12 m³)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eStone Requirement\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eMinimum 265 lbs of sauna stones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eMaximum Firewood Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e12.99 in (329 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eFirewood Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e3.14 to 4.72 in (80 to 120 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eMinimum Room Height\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e72 in (1828 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eFlue Connection Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eTop\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eHeater Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e161 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eShipping Weight With Stones\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e425 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eSafety Distance, Front to Back\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e55.89 in (1420 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eSafety Distance, Left to Right\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e33.85 in (860 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eStove Depth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e27.16 in (690 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eStove Width\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e19.29 in (490 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eStove Height\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e32.12 in (816 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003ePrimary Fuel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eWood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eEstonia\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eSpecifications: Cozy SW TW 18 kW\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eCozy SW-Thru-Wall 18 (SW TW 18 kW)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eHeater Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eWood-burning thru-wall sauna stove\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003ePower Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e18 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eSauna Room Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e317 to 635 cu ft (approximately 9 to 18 m³)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eStone Requirement\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eMinimum 353 lbs of sauna stones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eMaximum Firewood Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e15.74 in (400 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eFirewood Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e3.14 to 4.72 in (80 to 120 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eMinimum Room Height\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e82 in (2096 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eFlue Connection Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eTop\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eHeater Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e236 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eShipping Weight With Stones\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e633 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eSafety Distance, Front to Back\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e60.22 in (1530 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eSafety Distance, Left to Right\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e40.54 in (1030 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eStove Depth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e31.49 in (800 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eStove Width\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e21.65 in (550 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eStove Height\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e34.25 in (870 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003ePrimary Fuel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eWood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eEstonia\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eWhy Choose the Cozy Heat SW TW?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThru-wall loading\u003c\/strong\u003e keeps the sauna interior clean while you manage the fire from an adjacent room or exterior space\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEfficient, eco-conscious design\u003c\/strong\u003e that uses less fuel and produces cleaner exhaust compared to many traditional wood stoves\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenerous stone mass\u003c\/strong\u003e that stores heat and delivers smooth, long-lasting steam for authentic Finnish-style bathing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEuropean craftsmanship\u003c\/strong\u003e from a specialist sauna stove manufacturer in Estonia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eShipping and Returns\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eShips:\u003c\/strong\u003e Typically within 3 to 7 business days (freight appointment required)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDelivery:\u003c\/strong\u003e Free standard U.S. shipping to most locations\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReturns:\u003c\/strong\u003e 14-day return policy on unused, uninstalled stoves in original packaging\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"background-color: #e6ffea; padding: 15px; border-radius: 8px; margin-top: 20px;\"\u003e\n\u003cstrong\u003ePro Tip:\u003c\/strong\u003e When loading stones, avoid packing them too tightly. Place larger pieces toward the bottom of the basket and medium stones toward the top so air can flow between them. This improves heat-up time, protects the firebox, and provides softer, more consistent steam.\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ca title=\"Cozy Heat Installation and Operation Manual\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0739\/6455\/2421\/files\/Cozy_Heat_IOM.pdf?v=1764782666\"\u003eInstallation and Operation Manual\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0739\/6455\/2421\/files\/Cozy_Heat_Warranty.pdf?v=1764782800\" title=\"Cozy Heat Warranty\"\u003eWarranty\u003c\/a\u003e\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv style=\"margin-top: 15px;\"\u003e\n\u003cdetails style=\"margin-bottom: 12px;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWhat is the difference between the 12 kW and 18 kW Cozy SW TW models?\u003c\/summary\u003e\n\u003cp\u003eThe 12 kW SW TW is designed for sauna rooms from 210 to 423 cubic feet. The 18 kW SW TW is built for larger rooms from 317 to 635 cubic feet. The 18 kW model supports more stones, accommodates longer firewood, and can heat larger rooms more quickly due to its higher output.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 12px;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eHow does the thru-wall design work?\u003c\/summary\u003e\n\u003cp\u003eThe firebox passes through the wall of the sauna so you load wood from an adjacent room or exterior space. This helps keep ash and debris out of the sauna interior and reduces heat loss since you do not need to open the sauna door each time you add wood.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 12px;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eHow many stones do I need for each model?\u003c\/summary\u003e\n\u003cp\u003eThe 12 kW SW TW requires at least 265 lbs of sauna stones. The 18 kW SW TW requires at least 353 lbs of stones. Many installers recommend buying an additional box of stones so you can choose shapes that fit well and allow for better airflow.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 12px;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWhat type of stones should I use?\u003c\/summary\u003e\n\u003cp\u003eUse natural sauna stones such as olivine or peridotite in the 10 to 15 cm range. Do not use river rocks or decorative stones. Proper sauna stones are designed to withstand high temperatures and deliver better heat retention and steam quality.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 12px;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDoes the Cozy SW TW require a chimney?\u003c\/summary\u003e\n\u003cp\u003eYes. A certified wood-burning chimney system is required for safe operation. Use a flue and chimney kit that meets local building and fire codes and is specifically rated for wood-burning sauna stoves. Professional installation is strongly recommended.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 12px;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eHow long does it take to heat the sauna?\u003c\/summary\u003e\n\u003cp\u003eTypical heat-up time ranges from 45 to 75 minutes depending on room size, insulation, stone loading, and wood quality. The 18 kW model usually heats larger rooms more quickly because of its higher output and larger firebox.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 12px;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eIs the glass viewing window heat-resistant?\u003c\/summary\u003e\n\u003cp\u003eYes. The stove uses heat-resistant, tempered glass so you can safely enjoy the view of the fire while maintaining a relaxing and comfortable sauna environment.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 12px;\"\u003e\n\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDo I need professional installation?\u003c\/summary\u003e\n\u003cp\u003eProfessional installation is highly recommended. A qualified installer will configure the chimney, verify clearances to combustibles, and ensure the stove meets local building and fire safety requirements for wood-burning appliances.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Your Spa Pool","offers":[{"title":"12kW","offer_id":53834078519629,"sku":null,"price":2452.5,"currency_code":"USD","in_stock":true},{"title":"18kW","offer_id":53834078552397,"sku":null,"price":2884.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0919\/1990\/9197\/files\/cozy-thru-wall-sauna-stove-with-rocks-front-view.jpg?v=1777941611","url":"https:\/\/yourspapool.com\/products\/cozy-heat-sw-thru-wall-sauna-stove","provider":"Your Spa Pool","version":"1.0","type":"link"}