{"product_id":"harvia-m3-wood-burning-sauna-stove","title":"Harvia M3 Wood-Burning Sauna Stove","description":"\u003csection class=\"product-intro\"\u003e\n\u003cp\u003eThe Harvia M3 is a 16.5kW wood-burning sauna stove that brings authentic Finnish sauna tradition to residential cabins, off-grid retreats, and traditional sauna rooms. Designed for spaces between 160 and 460 cubic feet, the M3 combines a classic graphite black and stainless steel finish with a glass front door that lets you watch the fire as it heats the room. Adjustable legs, an integrated ash box, and a straightforward installation process make it a practical choice for homeowners who want a genuine wood-fired sauna experience without unnecessary complexity.\u003c\/p\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"product-why-choose\"\u003e\n\u003ch2\u003eWhy Customers Choose the Harvia M3\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAuthentic wood-fired heat — no electricity required for operation\u003c\/li\u003e\n\u003cli\u003eGlass front door displays the fire and adds warmth to the sauna atmosphere\u003c\/li\u003e\n\u003cli\u003e16.5kW output handles rooms from 160 to 460 cubic feet\u003c\/li\u003e\n\u003cli\u003eGraphite black and stainless steel finish suits both traditional and modern sauna interiors\u003c\/li\u003e\n\u003cli\u003eAdjustable legs provide stability on uneven floors\u003c\/li\u003e\n\u003cli\u003eIntegrated ash box simplifies routine cleaning and maintenance\u003c\/li\u003e\n\u003cli\u003eMade in Finland by Harvia, a manufacturer with over 70 years of sauna equipment 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\u003e16.5kW Wood-Fired Output\u003c\/h3\u003e\n\u003cp\u003eThe M3 delivers 16.5kW of heat output, making it suitable for sauna rooms ranging from 160 to 460 cubic feet. It reaches operating temperature efficiently and maintains consistent heat throughout the session.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"highlight-item\"\u003e\n\u003ch3\u003eGlass Front Door\u003c\/h3\u003e\n\u003cp\u003eThe tempered glass front door allows you to view the fire during your session, contributing to the visual and sensory experience of a traditional 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 M3's classic Finnish aesthetic pairs a matte graphite black body with stainless steel accents, fitting naturally in both rustic cabin settings and contemporary sauna rooms.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"highlight-item\"\u003e\n\u003ch3\u003eAdjustable Legs\u003c\/h3\u003e\n\u003cp\u003eLeveling legs allow the stove to sit stably on uneven or sloped floors, reducing the need for additional floor preparation during installation.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"highlight-item\"\u003e\n\u003ch3\u003eIntegrated Ash Box\u003c\/h3\u003e\n\u003cp\u003eThe built-in ash collection box keeps the firebox clean and makes ash removal straightforward, reducing maintenance time between sessions.\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 M3 operates entirely on wood fuel, making it well-suited for off-grid cabins, remote retreats, or any location 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 M3 reflects that heritage with materials and construction standards developed specifically for sauna environments.\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 M3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003ctd\u003e120-WKM3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBarcode\u003c\/th\u003e\n\u003ctd\u003e6417659009423\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePower Rating\u003c\/th\u003e\n\u003ctd\u003e16.5 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\u003eRoom Size (Min)\u003c\/th\u003e\n\u003ctd\u003e160 cubic feet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRoom Size (Max)\u003c\/th\u003e\n\u003ctd\u003e460 cubic feet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWidth\u003c\/th\u003e\n\u003ctd\u003e15\" (381 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDepth\u003c\/th\u003e\n\u003ctd\u003e18\" (457 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeight\u003c\/th\u003e\n\u003ctd\u003e28\" (711 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eUnit Weight\u003c\/th\u003e\n\u003ctd\u003e97 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShipping Weight (with stones)\u003c\/th\u003e\n\u003ctd\u003e163 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStone Capacity\u003c\/th\u003e\n\u003ctd\u003e90 lbs (approx. 3 boxes of AC3020, sold separately)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eGraphite black with stainless steel accents\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\u003eLegs\u003c\/th\u003e\n\u003ctd\u003eAdjustable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAsh Management\u003c\/th\u003e\n\u003ctd\u003eIntegrated ash box\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 M3 Wood-Burning Sauna Stove\u003c\/li\u003e\n\u003cli\u003eInstallation and Operation Manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eSauna stones (90 lbs \/ approx. 3 boxes of AC3020) are sold separately. A chimney system is required and sold separately.\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\u003eResidential sauna rooms from 160 to 460 cubic feet\u003c\/li\u003e\n\u003cli\u003eCabin and off-grid sauna installations without electrical service\u003c\/li\u003e\n\u003cli\u003eTraditional Finnish-style sauna builds\u003c\/li\u003e\n\u003cli\u003eHomeowners who prefer authentic wood-fired heat over electric alternatives\u003c\/li\u003e\n\u003cli\u003eBackyard sauna structures, outbuildings, and detached sauna rooms\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 M3 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 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 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 The M3 requires 90 lbs of sauna stones (approximately 3 boxes of Harvia AC3020). 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 wood, painted wood, trash, or accelerants in this stove.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupervision required:\u003c\/strong\u003e Never leave a wood-burning stove unattended while in operation. Ensure a working carbon monoxide detector and smoke detector 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\u003eDoes the M3 require electricity to operate?\u003c\/summary\u003e\n\u003cp\u003eNo. The Harvia M3 is a wood-burning stove and operates entirely on wood fuel. No electrical connection is required for heating. This makes it suitable for off-grid cabins and locations without reliable electrical service.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat size sauna room is the M3 designed for?\u003c\/summary\u003e\n\u003cp\u003eThe M3 is rated for sauna rooms between 160 and 460 adjusted cubic feet. Room sizing accounts for ceiling height, wall insulation, and glass area. If you are unsure whether the M3 is the right size for your room, contact us before ordering.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eAre sauna stones included?\u003c\/summary\u003e\n\u003cp\u003eNo. The M3 requires 90 lbs of sauna stones (approximately 3 boxes of Harvia AC3020 stones), which are sold separately. Stones must be loaded 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 with the M3?\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. Unseasoned or wet wood produces excess smoke and reduces heating efficiency.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCan the M3 be installed on an uneven floor?\u003c\/summary\u003e\n\u003cp\u003eYes. The M3 includes adjustable legs that allow the stove to be leveled on uneven or slightly sloped floors, reducing the need for additional floor preparation.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eDoes the M3 come with an installation manual?\u003c\/summary\u003e\n\u003cp\u003eYes. The M3 includes an installation and operation 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 M3 is a well-built, straightforward wood-burning sauna stove for homeowners who want authentic Finnish sauna heat without relying on electricity. If you have questions about room sizing, chimney compatibility, or required 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\": \"Does the M3 require electricity to operate?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"No. The Harvia M3 is a wood-burning stove and operates entirely on wood fuel. No electrical connection is required for heating.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What size sauna room is the M3 designed for?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The M3 is rated for sauna rooms between 160 and 460 adjusted cubic feet.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are sauna stones included?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"No. The M3 requires 90 lbs of sauna stones (approximately 3 boxes of Harvia AC3020 stones), sold separately.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is a chimney included with the M3?\",\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 any material containing accelerants.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can the M3 be installed on an uneven floor?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. The M3 includes adjustable legs that allow the stove to be leveled on uneven or slightly sloped floors.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Does the M3 come with an installation manual?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. The M3 includes an installation and operation 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":50263960617199,"sku":"120-WKM3","price":941.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0808\/7568\/4079\/files\/Harvia_M3_WKM3_Wood_Burning_Sauna_Stove_-_Finnish_Sauna_Builders.webp?v=1785267065","url":"https:\/\/intentionalwellnesslab.com\/products\/harvia-m3-wood-burning-sauna-stove","provider":"Intentional Wellness Lab","version":"1.0","type":"link"}