{"product_id":"finnleo-designer-sl2-sauna-heater-designer-sl2-4-5-kw-240v-1ph","title":"Finnleo Designer SL2 4.5 kW (240V 1PH) Sauna Heater","description":"\u003ch2\u003eFinnleo Designer SL2 4.5 kW (240V, 1-Phase) Electric Sauna Heater\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eFinnleo Designer SL2 4.5 kW (240V, 1-Phase) Electric Sauna Heater\u003c\/strong\u003e is a compact, wall-mounted sauna heater engineered for home saunas ranging from 100 to 210 cubic feet. Manufactured in Finland to Finnleo's exacting standards and backed by Finnleo\/Sauna360 in Cokato, Minnesota, the Designer SL2 delivers fast, deeply penetrating heat and rich, authentic steam by holding up to 33 lbs of sauna rocks in direct contact with the heating elements. It's the ideal choice for smaller or space-conscious sauna builds that still demand a genuine Finnish sauna experience.\u003c\/p\u003e\n\n\u003cp\u003eDesigned to keep your sauna floor clear and your layout flexible, the Designer SL2 mounts directly to the wall, giving your sauna a clean, modern look while freeing up valuable bench and floor space. Available in 4.5 kW, 6.0 kW, and 8.0 kW versions to match rooms of nearly any size, the 4.5 kW single-phase model is purpose-built for smaller home saunas without sacrificing performance or heat quality.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpace-Saving Wall-Mounted Design:\u003c\/strong\u003e Mounts to the wall to keep the sauna floor clear, freeing up bench space and giving your sauna room a clean, modern aesthetic.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4.5 kW Heating Output:\u003c\/strong\u003e Sized specifically for saunas between 100 and 210 cubic feet, running on 240V single-phase power for reliable, efficient performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRock Capacity:\u003c\/strong\u003e Holds up to 33 lbs of sauna rocks, positioned in direct contact with the heating elements for fast heat-up, authentic steam, and consistent, penetrating warmth.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact Dimensions:\u003c\/strong\u003e Approximately 16\"W x 11.5\"D x 24\"H, fitting easily into smaller sauna cabins without crowding the room.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrong Steel Construction:\u003c\/strong\u003e Built with a rust-resistant, tough steel housing designed to withstand the demanding humidity and temperature swings of regular sauna use, including exceptional performance in outdoor saunas.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in Finland:\u003c\/strong\u003e Manufactured to trusted Finnish quality standards with every unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePairs with SaunaLogic2® Control:\u003c\/strong\u003e Compatible with the SaunaLogic2 smart control system, available in Wi-Fi or non-Wi-Fi versions, letting you manage heat, timing, and lighting from a sleek touchscreen or the SaunaLogic2 mobile app (iOS and Android).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemote \u0026amp; App Control (with SL2 Control):\u003c\/strong\u003e Start, stop, and adjust your sauna from anywhere, schedule delayed starts up to 24 hours in advance, and save favorite settings for fast, one-tap access.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Lighting Compatibility:\u003c\/strong\u003e The SaunaLogic2 control lets you turn sauna lighting on and off alongside heat settings, with optional mood lighting add-ons available.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible Configuration:\u003c\/strong\u003e Available as Heater Only or bundled with the SaunaLogic2 control package to match your installation needs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety Certified:\u003c\/strong\u003e ETL listed and safety-tested for use in wet, high-heat environments throughout North America.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnergy Efficient:\u003c\/strong\u003e Fast heat-up with smart power use, so you spend less time waiting and more time enjoying your sauna.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy Maintenance:\u003c\/strong\u003e Simply wipe down the heater as needed and replace the rocks every 1-3 years—no complicated upkeep required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustry-Leading Warranty:\u003c\/strong\u003e Backed by Finnleo's 5-year residential sauna heater warranty, with friendly, knowledgeable technical support based in Cokato, Minnesota.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFinnleo Designer SL2 4.5 kW electric sauna heater (wall-mounted)\u003c\/li\u003e\n\u003cli\u003eSauna rocks (up to 33 lbs, included with every unit)\u003c\/li\u003e\n\u003cli\u003eSaunaLogic2® control panel (Wi-Fi or non-Wi-Fi version, depending on configuration selected)\u003c\/li\u003e\n\u003cli\u003eCB (contactor) box\u003c\/li\u003e\n\u003cli\u003eWiring for heater and control connection\u003c\/li\u003e\n\u003cli\u003eManufacturer's 5-year residential warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNote: The Designer SL2 is offered as Heater Only or as a bundled package with the SaunaLogic2 control. Professional installation by a licensed electrician is recommended for all configurations.\u003c\/p\u003e\n\n\u003ch2\u003eConstruction \u0026amp; Design\u003c\/h2\u003e\n\u003cp\u003eThe Designer SL2 features a rugged, wall-mounted heater body constructed from strong, rust-resistant steel built to endure the harsh, high-humidity environment inside a sauna, including outdoor sauna installations. Its compact housing is engineered to maximize rock contact with the heating elements, a hallmark of the Finnleo Designer line, ensuring heat transfers efficiently for a traditional, high-quality sauna experience rather than the drier heat produced by lower-capacity heaters. Every unit is manufactured to Finnish quality standards and is ETL listed for safe use in wet environments.\u003c\/p\u003e\n\n\u003ch2\u003eControl System\u003c\/h2\u003e\n\u003cp\u003eThe Designer SL2 4.5 kW is designed to integrate with Finnleo's SaunaLogic2® control system, a sleek, modern, water-resistant, full-glass touchscreen display with a slim profile (approximately 3-3\/8\" wide x 5-1\/2\" tall x 1\/4\" deep) that can be mounted inside or outside the sauna room. With the Wi-Fi enabled version, the SaunaLogic2 mobile app (available on iOS and Android) lets you:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStart your sauna, adjust the temperature, set a timer, or turn on the lights from anywhere—your couch, car, or office\u003c\/li\u003e\n\u003cli\u003eSchedule delayed start times up to 24 hours in advance, so your sauna is ready when you are\u003c\/li\u003e\n\u003cli\u003eSave your favorite temperature and lighting settings for fast, one-tap access\u003c\/li\u003e\n\u003cli\u003eCheck sauna status remotely for added peace of mind\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe control is UL\/ETL certified and safe for wet environments, and optional add-ons such as mood lighting and a Bluetooth soundbar can further enhance the sauna experience.\u003c\/p\u003e\n\n\u003ch2\u003eRocks Included\u003c\/h2\u003e\n\u003cp\u003eEvery Designer SL2 4.5 kW heater ships complete with up to 33 lbs of sauna rocks, so there's no need to source rocks separately. The rocks sit in direct contact with the heating elements, a key part of the Designer SL2's fast heat-up and quality steam production. For long-term performance, Finnleo recommends replacing the rocks approximately every 1 to 3 years.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose the Finnleo Designer SL2\u003c\/h2\u003e\n\u003cp\u003eFinnleo, manufactured by Sauna360 in Cokato, Minnesota, is one of the most established names in authentic Finnish sauna heating. Every Finnleo heater, including the Designer SL2, is safety-tested and ETL listed for North American use, and works seamlessly within the SaunaLogic2® ecosystem to unify your heater, lighting, and sauna experience into one convenient, app-controlled system. Backed by an industry-leading 5-year residential warranty and dedicated Minnesota-based technical support, the Designer SL2 4.5 kW delivers the reliable, penetrating heat that defines a genuine Finnish sauna session—whether you're building a compact home sauna or upgrading an existing one.\u003c\/p\u003e\n","brand":"Finnleo","offers":[{"title":"Heater Only","offer_id":48385847525617,"sku":"9053-382","price":1595.0,"currency_code":"USD","in_stock":true},{"title":"Heater + SaunaLogic2 Wi-Fi Control","offer_id":48385847558385,"sku":"9053-382+SL2W","price":2735.0,"currency_code":"USD","in_stock":true},{"title":"Heater + SaunaLogic2 Control (Non-Wi-Fi)","offer_id":48385847591153,"sku":"9053-382+SL2N","price":2225.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0582\/6386\/3453\/files\/FinnleoDesignerSL24kWSaunaHeater00.webp?v=1783705165","url":"https:\/\/finnishsaunabuilders.com\/products\/finnleo-designer-sl2-sauna-heater-designer-sl2-4-5-kw-240v-1ph","provider":"Finnish Sauna Builders","version":"1.0","type":"link"}