{"product_id":"harvia-pro-20-rs-wood-burning-sauna-stove-with-water-tank","title":"Harvia Pro 20 RS Wood-Burning Sauna Stove with Water Tank","description":"\u003csection class=\"product-intro\"\u003e\n\u003cp\u003eThe Harvia Pro 20 RS is a 20kW wood-burning sauna stove built for cottage and cabin saunas that demand both heating performance and practical convenience. Its standout feature is an integrated 30-liter water tank mounted on the right side of the stove, which heats water passively as the firebox warms the room — giving you hot water for löyly and washing without a separate water heater. A large stone compartment, tempered glass front door, and graphite black body with stainless steel accents round out a stove that is as functional as it is well-finished. Made in Finland by Harvia, the Pro 20 RS is a dependable choice for sauna rooms where wood-fired heat and on-demand hot water are both priorities.\u003c\/p\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"product-why-choose\"\u003e\n\u003ch2\u003eWhy Customers Choose the Harvia Pro 20 RS\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eIntegrated 30-liter water tank heats water while the stove fires — no separate water heater needed\u003c\/li\u003e\n\u003cli\u003e20kW output handles larger sauna rooms with consistent, even heat\u003c\/li\u003e\n\u003cli\u003eLarge stone compartment produces soft, hearty steam\u003c\/li\u003e\n\u003cli\u003eTempered glass front door lets you watch the fire during your session\u003c\/li\u003e\n\u003cli\u003eGraphite black and stainless steel finish suits traditional and modern sauna interiors\u003c\/li\u003e\n\u003cli\u003eWood-fired operation — no electrical connection required for heating\u003c\/li\u003e\n\u003cli\u003eMade in Finland by Harvia, with over 70 years of sauna equipment manufacturing experience\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\u003eIntegrated 30-Liter Water Tank\u003c\/h3\u003e\n\u003cp\u003eThe fixed right-side water tank heats passively as the stove operates, providing hot water for löyly steam and post-sauna washing without a separate appliance or electrical connection.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"highlight-item\"\u003e\n\u003ch3\u003e20kW Wood-Fired Output\u003c\/h3\u003e\n\u003cp\u003eThe Pro 20 RS delivers 20kW of heat output, making it well-suited for larger cottage and cabin sauna rooms. It reaches operating temperature efficiently and sustains heat throughout extended sessions.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"highlight-item\"\u003e\n\u003ch3\u003eLarge Stone Compartment\u003c\/h3\u003e\n\u003cp\u003eWith a minimum stone load of 88 lbs, the Pro 20 RS produces rich, consistent steam that distributes evenly throughout the sauna room for a comfortable bathing experience.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"highlight-item\"\u003e\n\u003ch3\u003eTempered Glass Front Door\u003c\/h3\u003e\n\u003cp\u003eThe glass door allows you to monitor the fire and add wood without fully opening the firebox, contributing to both convenience and the visual ambiance of a wood-burning sauna.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"highlight-item\"\u003e\n\u003ch3\u003eGraphite Black and Stainless Steel Finish\u003c\/h3\u003e\n\u003cp\u003eThe Pro model's graphite black outer casing with stainless steel front panel is designed to complement both traditional Finnish sauna interiors and contemporary cabin aesthetics.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"highlight-item\"\u003e\n\u003ch3\u003eNo Electrical Connection Required\u003c\/h3\u003e\n\u003cp\u003eThe Pro 20 RS operates entirely on wood fuel, making it a practical option for off-grid cabins, remote retreats, and locations without reliable electrical service.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"highlight-item\"\u003e\n\u003ch3\u003eMade in Finland\u003c\/h3\u003e\n\u003cp\u003eHarvia has manufactured sauna equipment in Finland since 1950. The Pro 20 RS is built to the material and construction standards that Harvia's sauna-specific engineering is known for.\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\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003ctd\u003eHarvia Pro 20 RS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003ctd\u003eWKPR20ESM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBarcode\u003c\/th\u003e\n\u003ctd\u003e6417659017824\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePower Rating\u003c\/th\u003e\n\u003ctd\u003e20 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFuel Type\u003c\/th\u003e\n\u003ctd\u003eWood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater Tank\u003c\/th\u003e\n\u003ctd\u003e30 liters (integrated, right-side mounted)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStone Capacity (Min)\u003c\/th\u003e\n\u003ctd\u003e88 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Casing\u003c\/th\u003e\n\u003ctd\u003eGraphite black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFront Panel\u003c\/th\u003e\n\u003ctd\u003eStainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDoor\u003c\/th\u003e\n\u003ctd\u003eTempered glass front door\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShipping Weight\u003c\/th\u003e\n\u003ctd\u003e350 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOrigin\u003c\/th\u003e\n\u003ctd\u003eFinland\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"product-in-box\"\u003e\n\u003ch2\u003eIn the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHarvia Pro 20 RS Wood-Burning Sauna Stove with Water Tank\u003c\/li\u003e\n\u003cli\u003eInstallation and Operations Manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eSauna stones (minimum 88 lbs) and chimney system are sold separately and required for operation.\u003c\/em\u003e\u003c\/p\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\u003eCottage and cabin sauna rooms requiring both heat and on-demand hot water\u003c\/li\u003e\n\u003cli\u003eLarger sauna rooms where 20kW output is appropriate\u003c\/li\u003e\n\u003cli\u003eOff-grid and remote installations without electrical service\u003c\/li\u003e\n\u003cli\u003eHomeowners who prefer authentic wood-fired sauna heat\u003c\/li\u003e\n\u003cli\u003eTraditional Finnish-style sauna builds where löyly steam quality is a priority\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\u003eChimney system required:\u003c\/strong\u003e The Pro 20 RS must be connected to a properly rated chimney system. The chimney is not included and must be purchased and installed separately in accordance with local building and fire codes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfessional installation recommended:\u003c\/strong\u003e Installation must comply with all applicable local fire, building, and safety codes. Consult the included installation manual and verify requirements with your local authority having jurisdiction (AHJ) before beginning installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClearance requirements:\u003c\/strong\u003e Maintain all minimum clearances from combustible walls, floors, and materials as specified in the installation manual. Failure to observe clearances creates a fire hazard.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStones not included:\u003c\/strong\u003e A minimum of 88 lbs of sauna stones is required. Stones must be purchased separately and loaded per the manufacturer's instructions before first use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWood fuel only:\u003c\/strong\u003e Use only dry, seasoned firewood. Do not burn treated lumber, painted wood, plywood, trash, or any material containing accelerants.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater tank use:\u003c\/strong\u003e Fill the water tank before lighting the stove. Do not operate the stove with an empty water tank, as this may damage the tank. Follow all water tank instructions in the operations manual.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupervision required:\u003c\/strong\u003e Never leave a wood-burning stove unattended while in operation. Ensure working carbon monoxide and smoke detectors are installed in or near the sauna space.\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\u003e\n\u003csummary\u003eWhat does the integrated water tank do?\u003c\/summary\u003e\n\u003cp\u003eThe 30-liter water tank is mounted on the right side of the stove and heats passively as the firebox operates. It provides hot water for throwing on the stones (löyly) and for post-sauna washing, without requiring a separate water heater or electrical connection.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eDoes the Pro 20 RS require electricity to operate?\u003c\/summary\u003e\n\u003cp\u003eNo. The Pro 20 RS is a wood-burning stove and operates entirely on wood fuel. No electrical connection is required for heating or for the water tank, which heats passively from the stove's heat output.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eAre sauna stones included?\u003c\/summary\u003e\n\u003cp\u003eNo. A minimum of 88 lbs of sauna stones is required and must be purchased separately. Load stones according to the manufacturer's instructions before first use.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eIs a chimney included?\u003c\/summary\u003e\n\u003cp\u003eNo. A chimney system is required for safe operation and must be purchased and installed separately. The chimney must be rated for wood-burning stove use and installed in compliance with local building and fire codes.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat type of wood should I use?\u003c\/summary\u003e\n\u003cp\u003eUse only dry, seasoned hardwood or softwood firewood. Do not burn treated lumber, painted wood, plywood, trash, or any material containing accelerants. Wet or unseasoned wood reduces heating efficiency and produces excess smoke.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eDo I need to fill the water tank before use?\u003c\/summary\u003e\n\u003cp\u003eYes. Always fill the water tank before lighting the stove. Operating the stove with an empty tank may damage the tank. Refer to the operations manual for full water tank instructions and maintenance guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eDoes the Pro 20 RS come with an installation manual?\u003c\/summary\u003e\n\u003cp\u003eYes. The stove includes an installation and operations manual. All installations must comply with local fire, building, and safety codes. Consult your local authority having jurisdiction (AHJ) before beginning installation.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"product-closing\"\u003e\n\u003cp\u003eThe Harvia Pro 20 RS is a practical, well-built wood-burning sauna stove for cottage and cabin owners who want authentic Finnish heat and the convenience of an integrated water tank in a single unit. If you have questions about room sizing, chimney compatibility, stone requirements, or accessories, contact us before ordering — we're here to help you get the right setup from the start.\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\": \"What does the integrated water tank do?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The 30-liter water tank is mounted on the right side of the stove and heats passively as the firebox operates, providing hot water for löyly and post-sauna washing without a separate water heater.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Does the Pro 20 RS require electricity to operate?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"No. The Pro 20 RS is a wood-burning stove and operates entirely on wood fuel. No electrical connection is required.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are sauna stones included?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"No. A minimum of 88 lbs of sauna stones is required and must be purchased separately.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is a chimney included?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"No. A chimney system is required for safe operation and must be purchased and installed separately in compliance with local building and fire codes.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What type of wood should I use?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Use only dry, seasoned hardwood or softwood firewood. Do not burn treated lumber, painted wood, plywood, trash, or accelerants.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Do I need to fill the water tank before use?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. Always fill the water tank before lighting the stove. Operating with an empty tank may damage it.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Does the Pro 20 RS come with an installation manual?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. The stove includes an installation and operations manual. All installations must comply with local fire, building, and safety codes.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n\n\u003cp style=\"text-align: center; font-size: 0.75rem; color: #888; margin-top: 2rem;\"\u003eSauna use is a personal wellness practice. Consult a qualified healthcare provider before use if you have any medical conditions, are pregnant, or are taking medications that may be affected by heat exposure.\u003c\/p\u003e","brand":"Finnish Sauna Builders","offers":[{"title":"Default Title","offer_id":50263960551663,"sku":"WKPR20ESM","price":2153.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0808\/7568\/4079\/files\/Harvia_20_RS_Pro_WK200RS.jpg?v=1785267064","url":"https:\/\/intentionalwellnesslab.com\/products\/harvia-pro-20-rs-wood-burning-sauna-stove-with-water-tank","provider":"Intentional Wellness Lab","version":"1.0","type":"link"}