{"product_id":"harvia-20-pro-sl-woodburning-stove","title":"Harvia Pro 20 SL Wood Burning Sauna Stove with Firebox Extension - WKPR20SLM","description":"\u003ch2\u003eHarvia Pro 20 SL Wood Burning Sauna Stove with Firebox Extension - WKPR20SLM\u003c\/h2\u003e\n\u003cp\u003eAre you passionate about wellness and self-care? If you appreciate the soothing benefits of saunas and enjoy nourishing meals, hiking, yoga, and meditation, the  with Firebox Extension is the ideal addition to your wellness sanctuary. This high-performance stove offers effortless purchasing and installation, providing robust, consistent heat, while the firebox extension allows for convenient refueling from an adjacent room, ensuring an uninterrupted sauna experience. As a trusted brand known for innovative designs, represents quality at My Sauna World, making this stove a valuable investment backed by decades of expertise. Join a global community of wellness enthusiasts and enjoy the transformative benefits of regular sauna use, enhancing your overall well-being with improved muscle recovery, stress reduction, and better sleep.\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eWhat our Experts Think\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli data-section-id=\"aioykw\" data-start=\"27\" data-end=\"294\"\u003e\n\u003cstrong data-start=\"29\" data-end=\"85\"\u003eHigh-performance heating for medium saunas (8–20 m³)\u003c\/strong\u003e\u003cbr data-start=\"85\" data-end=\"88\"\u003eWidely regarded as a strong, professional-grade wood-burning stove designed for consistent heat output and reliable steam quality in small to mid-sized sauna rooms. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"108q8rd\" data-start=\"296\" data-end=\"565\"\u003e\n\u003cstrong data-start=\"298\" data-end=\"339\"\u003e“Through-the-wall” convenience design\u003c\/strong\u003e\u003cbr data-start=\"339\" data-end=\"342\"\u003eExperts highlight the SL (side-loading) firebox extension as a major advantage—allowing wood to be fed from outside the sauna, keeping the bathing area cleaner and more comfortable. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"bwvxjg\" data-start=\"567\" data-end=\"788\"\u003e\n\u003cstrong data-start=\"569\" data-end=\"604\"\u003eExcellent steam (löyly) quality\u003c\/strong\u003e\u003cbr data-start=\"604\" data-end=\"607\"\u003eLarge stone capacity (~40 kg) helps produce soft, even, long-lasting steam rather than harsh bursts—ideal for traditional sauna experience. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"t8bobq\" data-start=\"790\" data-end=\"1018\"\u003e\n\u003cstrong data-start=\"792\" data-end=\"825\"\u003eBuilt for durability \u0026amp; safety\u003c\/strong\u003e\u003cbr data-start=\"825\" data-end=\"828\"\u003eHeavy-duty steel construction, cast-iron glass door, and CE-certified design make it suitable for regular and long-term use in demanding conditions. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"pan3lz\" data-start=\"1020\" data-end=\"1257\"\u003e\n\u003cstrong data-start=\"1022\" data-end=\"1062\"\u003eTrusted Finnish engineering standard\u003c\/strong\u003e\u003cbr data-start=\"1062\" data-end=\"1065\"\u003eFrequently praised by sauna installers and users as a “no-nonsense” reliable Pro-series heater with simple operation and low maintenance requirements. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1cald47\" data-start=\"1259\" data-end=\"1497\"\u003e\n\u003cstrong data-start=\"1261\" data-end=\"1300\"\u003eBest for authentic sauna experience\u003c\/strong\u003e\u003cbr data-start=\"1300\" data-end=\"1303\"\u003eExperts consistently recommend it for users who value real wood-fired heat, natural ambiance, and strong heat retention over modern electric alternatives.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eQ\u0026amp;A\u003c\/h5\u003e\n\u003cp data-start=\"87\" data-end=\"282\"\u003e\u003cstrong data-start=\"87\" data-end=\"132\"\u003eQ: What is the Harvia Pro 20 SL used for?\u003c\/strong\u003e\u003cbr data-start=\"132\" data-end=\"135\"\u003eA: It is a wood-burning sauna stove designed to heat small to medium-sized saunas while also providing a cozy fireplace effect in an adjacent room.\u003c\/p\u003e\n\u003cp data-start=\"284\" data-end=\"470\"\u003e\u003cstrong data-start=\"284\" data-end=\"348\"\u003eQ: What does the “SL” (through-the-wall firebox) feature do?\u003c\/strong\u003e\u003cbr data-start=\"348\" data-end=\"351\"\u003eA: It allows firewood to be loaded from outside the sauna room, so you can heat the sauna without bringing wood inside.\u003c\/p\u003e\n\u003cp data-start=\"472\" data-end=\"664\"\u003e\u003cstrong data-start=\"472\" data-end=\"514\"\u003eQ: What size sauna is it suitable for?\u003c\/strong\u003e\u003cbr data-start=\"514\" data-end=\"517\"\u003eA: It is ideal for sauna rooms approximately 8–20 m³ (about 283–706 ft³), depending on insulation and design. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"666\" data-end=\"818\"\u003e\u003cstrong data-start=\"666\" data-end=\"708\"\u003eQ: Is it suitable for residential use?\u003c\/strong\u003e\u003cbr data-start=\"708\" data-end=\"711\"\u003eA: Yes, it is designed for home and cottage sauna use, offering efficient and authentic wood-fired heating.\u003c\/p\u003e\n\u003cp data-start=\"820\" data-end=\"991\"\u003e\u003cstrong data-start=\"820\" data-end=\"866\"\u003eQ: What are its main performance features?\u003c\/strong\u003e\u003cbr data-start=\"866\" data-end=\"869\"\u003eA: It provides strong heat output, excellent steam (löyly), and a large stone capacity for steady, even heat distribution.\u003c\/p\u003e\n\u003cp data-start=\"993\" data-end=\"1149\"\u003e\u003cstrong data-start=\"993\" data-end=\"1053\"\u003eQ: Does it support a fireplace-style viewing experience?\u003c\/strong\u003e\u003cbr data-start=\"1053\" data-end=\"1056\"\u003eA: Yes, it features a glass door so you can enjoy the visible flame while the sauna heats up.\u003c\/p\u003e\n\u003cp data-start=\"1151\" data-end=\"1337\"\u003e\u003cstrong data-start=\"1151\" data-end=\"1209\"\u003eQ: What makes it different from standard sauna stoves?\u003c\/strong\u003e\u003cbr data-start=\"1209\" data-end=\"1212\"\u003eA: The through-the-wall firebox extension separates wood feeding from the sauna space, improving convenience and cleanliness.\u003c\/p\u003e\n\u003cp data-start=\"1339\" data-end=\"1512\"\u003e\u003cstrong data-start=\"1339\" data-end=\"1388\"\u003eQ: Does it require professional installation?\u003c\/strong\u003e\u003cbr data-start=\"1388\" data-end=\"1391\"\u003eA: Yes, professional installation is strongly recommended due to ventilation, clearance, and chimney safety requirements.\u003c\/p\u003e\n\u003ch5\u003eMaintenance Tips\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli data-section-id=\"1vioelf\" data-start=\"78\" data-end=\"223\"\u003e\n\u003cstrong data-start=\"80\" data-end=\"108\"\u003eEmpty ash box regularly:\u003c\/strong\u003e Clean before each use to ensure proper airflow and protect the fire grate. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"y29upx\" data-start=\"224\" data-end=\"364\"\u003e\n\u003cstrong data-start=\"226\" data-end=\"248\"\u003eUse only dry wood:\u003c\/strong\u003e Seasoned wood burns cleaner, improves efficiency, and reduces soot buildup. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"5biqz1\" data-start=\"365\" data-end=\"521\"\u003e\n\u003cstrong data-start=\"367\" data-end=\"392\"\u003eClean chimney \u0026amp; flue:\u003c\/strong\u003e Remove soot and creosote buildup regularly to maintain safe draft and prevent fire risk. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"r9rn8y\" data-start=\"522\" data-end=\"685\"\u003e\n\u003cstrong data-start=\"524\" data-end=\"549\"\u003eInspect sauna stones:\u003c\/strong\u003e Re-stack and replace cracked stones at least once a year for proper heat and steam performance. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1sibg4\" data-start=\"686\" data-end=\"837\"\u003e\n\u003cstrong data-start=\"688\" data-end=\"710\"\u003eRemove ash safely:\u003c\/strong\u003e Store ash in a metal container away from flammable materials (may contain hot embers). \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"6glomk\" data-start=\"838\" data-end=\"990\"\u003e\n\u003cstrong data-start=\"840\" data-end=\"867\"\u003eWipe exterior surfaces:\u003c\/strong\u003e Clean dust and residue with a damp cloth to prevent corrosion and maintain finish. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"10qt979\" data-start=\"991\" data-end=\"1129\"\u003e\n\u003cstrong data-start=\"993\" data-end=\"1015\"\u003eAvoid overheating:\u003c\/strong\u003e Do not overload wood; excessive firing reduces stove lifespan and safety.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Harvia","offers":[{"title":"Default Title","offer_id":45598561730751,"sku":"WKPR20SLM","price":1691.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0683\/5703\/0079\/files\/HARVIA_2024-07-03T12_56_10.050Z.png?v=1777379046","url":"https:\/\/backyardprovider.com\/products\/harvia-20-pro-sl-woodburning-stove","provider":"Your Outdoor Setup Starts Here","version":"1.0","type":"link"}