{"product_id":"harvia-20-duo-wood-burning-sauna-stove","title":"Harvia 20 Duo Wood Burning Sauna Stove","description":"\u003csection class=\"product-intro\"\u003e\n\u003cp\u003eThe Harvia 20 Duo is a wood-burning sauna stove and fireplace combined into a single, well-crafted unit. It heats your sauna room to bathing temperature while letting you enjoy the warmth and ambiance of an open fire through its large steel-framed glass door. Built with a high-quality stainless steel outer casing, the Duo is designed for durability and long-term performance. Sauna rocks are included, and the stove ships with an adaptor that converts the metric flue connection to a standard 6-inch pipe — making installation more straightforward for North American setups.\u003c\/p\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"product-why-choose\"\u003e\n\u003ch2\u003eWhy Customers Choose the Harvia 20 Duo\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eTwo-in-one design: wood-burning sauna stove and fireplace in a single unit\u003c\/li\u003e\n\u003cli\u003eLarge steel-framed glass door for a clear view of the fire\u003c\/li\u003e\n\u003cli\u003eHigh-quality stainless steel outer casing for lasting durability\u003c\/li\u003e\n\u003cli\u003eSauna rocks included — no separate purchase required\u003c\/li\u003e\n\u003cli\u003eIncludes a metric-to-6\" pipe adaptor for easier North American installation\u003c\/li\u003e\n\u003cli\u003eCompatible with an optional pipe-mounted water heater accessory\u003c\/li\u003e\n\u003cli\u003eSuitable for sauna rooms from 282 to 706 cubic feet\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\u003eSauna Stove and Fireplace in One\u003c\/h3\u003e\n\u003cp\u003eThe Duo's combined design lets you heat your sauna to bathing temperature while enjoying the visual warmth of a wood fire — a feature that sets it apart from standard sauna stoves.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"highlight-item\"\u003e\n\u003ch3\u003eLarge Glass Door\u003c\/h3\u003e\n\u003cp\u003eThe generously sized, steel-framed glass door provides an unobstructed view of the fire, enhancing the traditional sauna atmosphere and adding a focal point to your sauna room.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"highlight-item\"\u003e\n\u003ch3\u003eStainless Steel Construction\u003c\/h3\u003e\n\u003cp\u003eThe outer casing is made from high-quality stainless steel, chosen for its resistance to heat, moisture, and the demanding conditions of a sauna environment.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"highlight-item\"\u003e\n\u003ch3\u003eSauna Rocks Included\u003c\/h3\u003e\n\u003cp\u003eThe Harvia 20 Duo ships with sauna rocks, so you can get your setup ready without sourcing stones separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"highlight-item\"\u003e\n\u003ch3\u003eOptional Water Heater Compatibility\u003c\/h3\u003e\n\u003cp\u003eThe stove can be equipped with a pipe-mounted water heater accessory, adding hot water capability to your sauna setup when desired.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"highlight-item\"\u003e\n\u003ch3\u003eNorth American Pipe Adaptor Included\u003c\/h3\u003e\n\u003cp\u003eAn adaptor that converts the metric flue connection to a standard 6-inch pipe size is included, simplifying chimney installation for North American builds.\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\u003ctable class=\"specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHarvia 20 Duo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSKU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWKPR20DUOS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFuel Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStove Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFloor Standing \/ Combination Stove-Fireplace\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOuter Casing Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDoor Frame Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSteel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDoor Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGlass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e17\"D x 21\"W x 30\"H + 11\" flue extension\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRoom Size (Cubic Feet)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e282 – 706 cu ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSauna Rocks\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIncluded (3 boxes required)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePipe Adaptor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIncluded (metric to standard 6\" pipe)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOptional Accessory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePipe-mounted water heater (sold separately)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e300 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBarcode (EAN)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6417659001137\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVendor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFinnish Sauna Builders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\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\u003eHomeowners building or upgrading a traditional wood-heated sauna\u003c\/li\u003e\n\u003cli\u003eBathers who want the ambiance of a fireplace alongside sauna heat\u003c\/li\u003e\n\u003cli\u003eSauna rooms between 282 and 706 cubic feet\u003c\/li\u003e\n\u003cli\u003eCustomers looking for a complete, ready-to-install wood-burning stove package\u003c\/li\u003e\n\u003cli\u003eThose who may want to add a pipe-mounted water heater in the future\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\u003eThree boxes of sauna rocks are required for operation. Rocks are included with this stove.\u003c\/li\u003e\n\u003cli\u003eA proper chimney and flue system must be installed before use. A Chimney Installation Manual and Operations Manual are available — contact us for documentation.\u003c\/li\u003e\n\u003cli\u003eThis stove must be installed in accordance with all applicable local building codes and fire safety regulations.\u003c\/li\u003e\n\u003cli\u003eInstallation should be performed by a qualified professional experienced with wood-burning appliances.\u003c\/li\u003e\n\u003cli\u003eMaintain adequate clearance from combustible materials as specified in the installation documentation.\u003c\/li\u003e\n\u003cli\u003eThe pipe-mounted water heater is an optional accessory and is sold separately.\u003c\/li\u003e\n\u003cli\u003eNever leave a burning stove unattended. Keep children and pets at a safe distance during operation.\u003c\/li\u003e\n\u003cli\u003eUse only dry, seasoned firewood. Do not burn treated wood, garbage, or accelerants.\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 class=\"faq-question\"\u003eDo sauna rocks come with this stove?\u003c\/summary\u003e\n\u003cdiv class=\"faq-answer\"\u003e\n\u003cp\u003eYes. The Harvia 20 Duo includes sauna rocks. Three boxes of rocks are required for operation, and they are included with your purchase.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"faq-item\"\u003e\n\u003csummary class=\"faq-question\"\u003eWhat is the difference between this stove and a standard sauna stove?\u003c\/summary\u003e\n\u003cdiv class=\"faq-answer\"\u003e\n\u003cp\u003eThe Harvia 20 Duo combines a wood-burning sauna stove with a fireplace-style glass door, allowing you to see and enjoy the fire while the sauna heats up. Standard sauna stoves typically do not have this open-fire viewing feature.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"faq-item\"\u003e\n\u003csummary class=\"faq-question\"\u003eWhat room size is this stove designed for?\u003c\/summary\u003e\n\u003cdiv class=\"faq-answer\"\u003e\n\u003cp\u003eThe Harvia 20 Duo is rated for sauna rooms between 282 and 706 cubic feet. Room volume, insulation quality, and construction materials all affect heating performance, so consult the product documentation for your specific setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"faq-item\"\u003e\n\u003csummary class=\"faq-question\"\u003eDo I need a chimney for this stove?\u003c\/summary\u003e\n\u003cdiv class=\"faq-answer\"\u003e\n\u003cp\u003eYes. A proper chimney and flue system is required. The stove includes an adaptor that converts the metric flue connection to a standard 6-inch pipe size for North American installations. Professional installation is strongly recommended.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"faq-item\"\u003e\n\u003csummary class=\"faq-question\"\u003eCan I add a water heater to this stove?\u003c\/summary\u003e\n\u003cdiv class=\"faq-answer\"\u003e\n\u003cp\u003eYes. The Harvia 20 Duo is compatible with an optional pipe-mounted water heater accessory, which is sold separately. This allows you to heat water for rinsing or other sauna-related use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"faq-item\"\u003e\n\u003csummary class=\"faq-question\"\u003eWhat fuel does this stove use?\u003c\/summary\u003e\n\u003cdiv class=\"faq-answer\"\u003e\n\u003cp\u003eThe Harvia 20 Duo is a wood-burning stove. Use only dry, seasoned firewood. Do not use treated wood, pellets, or any accelerants.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"faq-item\"\u003e\n\u003csummary class=\"faq-question\"\u003eCan I install this stove myself?\u003c\/summary\u003e\n\u003cdiv class=\"faq-answer\"\u003e\n\u003cp\u003eInstallation should be performed by a qualified professional experienced with wood-burning appliances. Local building codes may require a licensed contractor or inspector approval before use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003c\/section\u003e\n\n\u003csection class=\"product-closing\"\u003e\n\u003cp\u003eThe Harvia 20 Duo is a thoughtfully designed wood-burning sauna stove that brings together reliable heat output and the visual appeal of a fireplace. If you're looking for a durable, complete package for your sauna room, this is a strong choice. Order today and our team will be in touch to coordinate delivery and answer any installation questions.\u003c\/p\u003e\n\u003c\/section\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\": \"Do sauna rocks come with this stove?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. The Harvia 20 Duo includes sauna rocks. Three boxes of rocks are required for operation, and they are included with your purchase.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between this stove and a standard sauna stove?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The Harvia 20 Duo combines a wood-burning sauna stove with a fireplace-style glass door, allowing you to see and enjoy the fire while the sauna heats up. 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