{"product_id":"thermo-black-220-indoor-steam-sauna","title":"Thermo Black 220 Indoor Steam Sauna","description":"\u003cdiv style=\"text-align: left;\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eThermo Black 220 Indoor Steam Sauna\u003c\/strong\u003e brings elegant Finnish sauna design into the home, gym or wellness space. Made from heat-treated aspen, it offers a warm natural finish, excellent thermal performance and a mild wood aroma that helps create a relaxing sauna environment.\u003c\/p\u003e\n\u003cp\u003eDesigned for up to \u003cstrong\u003e3 people\u003c\/strong\u003e, this indoor sauna combines a spacious layout with black waxed aspen benches for a bold, modern contrast. Its modular structure allows the sauna to be assembled and disassembled more easily by two people, while the insulated cabin helps improve heating performance and long-term reliability. \u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe Thermo Black 220 is suitable for customers who want a design-led indoor sauna with a premium finish, without moving into a much larger commercial-style cabin. It is ideal for homes, gyms, wellness studios, spa rooms and dedicated relaxation spaces.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cdiv class=\"TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable style=\"width: 100%; height: 274.313px;\" class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 35.8036%; height: 19.5938px;\" class=\"\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"width: 61.3393%; height: 19.5938px;\" class=\"\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 35.8036%; height: 19.5938px;\"\u003eProduct name\u003c\/td\u003e\n\u003ctd style=\"width: 61.3393%; height: 19.5938px;\"\u003eThermo Black 220 Indoor Steam Sauna \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 35.8036%; height: 19.5938px;\"\u003eExternal dimensions\u003c\/td\u003e\n\u003ctd style=\"width: 61.3393%; height: 19.5938px;\"\u003e220 × 150 × 227 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 35.8036%; height: 19.5938px;\"\u003eExternal dimensions in mm\u003c\/td\u003e\n\u003ctd style=\"width: 61.3393%; height: 19.5938px;\"\u003e2200 × 1500 × 2270 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 35.8036%; height: 19.5938px;\"\u003eInternal dimensions\u003c\/td\u003e\n\u003ctd style=\"width: 61.3393%; height: 19.5938px;\"\u003e202 × 136 × 210 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 35.8036%; height: 19.5938px;\"\u003eInternal dimensions in mm\u003c\/td\u003e\n\u003ctd style=\"width: 61.3393%; height: 19.5938px;\"\u003e2020 × 1360 × 2100 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 35.8036%; height: 19.5938px;\"\u003eInternal volume\u003c\/td\u003e\n\u003ctd style=\"width: 61.3393%; height: 19.5938px;\"\u003e5.8 m³\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 35.8036%; height: 19.5938px;\"\u003eCapacity\u003c\/td\u003e\n\u003ctd style=\"width: 61.3393%; height: 19.5938px;\"\u003e3 people\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 35.8036%; height: 19.5938px;\"\u003eMaterial\u003c\/td\u003e\n\u003ctd style=\"width: 61.3393%; height: 19.5938px;\"\u003eHeat-treated aspen\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 35.8036%; height: 19.5938px;\"\u003eBenches\u003c\/td\u003e\n\u003ctd style=\"width: 61.3393%; height: 19.5938px;\"\u003eBlack waxed aspen\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 35.8036%; height: 19.5938px;\"\u003eInsulation\u003c\/td\u003e\n\u003ctd style=\"width: 61.3393%; height: 19.5938px;\"\u003ePIR 30 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 35.8036%; height: 19.5938px;\"\u003eHeater power\u003c\/td\u003e\n\u003ctd style=\"width: 61.3393%; height: 19.5938px;\"\u003e6.6 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 35.8036%; height: 19.5938px;\"\u003eAssembly\u003c\/td\u003e\n\u003ctd style=\"width: 61.3393%; height: 19.5938px;\"\u003eEasy assembly and disassembly by two people\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 35.8036%; height: 19.5938px;\"\u003eSuitable spaces\u003c\/td\u003e\n\u003ctd style=\"width: 61.3393%; height: 19.5938px;\"\u003eHomes, gyms and wellness spaces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003ePremium 3-person indoor sauna\u003c\/li\u003e\n\u003cli\u003eMade from heat-treated aspen\u003c\/li\u003e\n\u003cli\u003eBlack waxed aspen benches\u003c\/li\u003e\n\u003cli\u003eClean Finnish design\u003c\/li\u003e\n\u003cli\u003eSuitable for homes, gyms and wellness spaces\u003c\/li\u003e\n\u003cli\u003eModular construction for easier assembly and disassembly\u003c\/li\u003e\n\u003cli\u003eDesigned for assembly by two people\u003c\/li\u003e\n\u003cli\u003eStrong insulated structure for efficient heat retention\u003c\/li\u003e\n\u003cli\u003eHeater power: \u003cstrong\u003e6.6 kW\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eOptional sauna assembly service available\u003c\/li\u003e\n\u003cli\u003eOptional electrical installation available\u003c\/li\u003e\n\u003cli\u003eOptional sauna interior treatment available\u003c\/li\u003e\n\u003cli\u003eProduct installation available \u003cspan class=\"\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"TyagGW_tableContainer\"\u003e\n\u003ch3 class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003eDelivery Information\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"TyagGW_tableContainer\"\u003e\n\u003cp\u003eYour sauna is delivered securely packaged to help ensure safe transport and straightforward handling on arrival.\u003c\/p\u003e\n\u003cp\u003eMost saunas are delivered in multiple flat-packed boxes or a wooden crate, depending on the model. Delivery is kerbside only, meaning the driver will deliver to the nearest accessible point at your property but is not responsible for moving the goods inside.\u003c\/p\u003e\n\u003cp\u003eThis product is delivered on a 7.5 or 18 tonne vehicle. If access for a vehicle of this size may be restricted, please contact us in advance. Additional charges may apply if re-delivery is required using a smaller vehicle.\u003c\/p\u003e\n\u003cp\u003eIf you are unsure whether your postcode qualifies for free delivery, please use the delivery fee calculator in the shopping cart.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSauna Type\u003c\/th\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003cth\u003eNo. of Boxes\u003c\/th\u003e\n\u003cth\u003eDimensions\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eInfrared Light Sauna\u003c\/td\u003e\n\u003ctd\u003e300kg +\u003c\/td\u003e\n\u003ctd\u003e3-5\u003c\/td\u003e\n\u003ctd\u003eFlat packed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTraditional Steam Saunas\u003c\/td\u003e\n\u003ctd\u003e270kg +\u003c\/td\u003e\n\u003ctd\u003e4-7\u003c\/td\u003e\n\u003ctd\u003eFlat packed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutdoor Saunas\u003c\/td\u003e\n\u003ctd\u003e300kg +\u003c\/td\u003e\n\u003ctd\u003e3-6\u003c\/td\u003e\n\u003ctd\u003eFlat packed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWood Barrel Saunas\u003c\/td\u003e\n\u003ctd\u003e616kg +\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003eWood Crate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCorner Saunas\u003c\/td\u003e\n\u003ctd\u003e350kg +\u003c\/td\u003e\n\u003ctd\u003e3-7\u003c\/td\u003e\n\u003ctd\u003eFlat packed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDeluxe Relax Saunas\u003c\/td\u003e\n\u003ctd\u003e300kg +\u003c\/td\u003e\n\u003ctd\u003e3-7\u003c\/td\u003e\n\u003ctd\u003eFlat packed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCombination Saunas\u003c\/td\u003e\n\u003ctd\u003e300kg +\u003c\/td\u003e\n\u003ctd\u003e4-7\u003c\/td\u003e\n\u003ctd\u003eFlat packed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"TyagGW_tableContainer\"\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eAssembly Service (Optional)\u003c\/h3\u003e\n\u003cp\u003eOur sauna assembly service is available as an optional extra when ordering a sauna.\u003cbr\u003eThis service is ideal if you’d like professional setup on the day of delivery, without the hassle of self-assembly.\u003c\/p\u003e\n\u003ch4\u003eCoverage\u003c\/h4\u003e\n\u003cp\u003eWe currently cover most of England and Wales.\u003cbr\u003e\u003cspan\u003ePlease refer to coverage map below:\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eGreen: Available for Assembly Service.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eRed: Please contact us before including the Assembly Service.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eYellow (Striped) : We do not cover this area currently.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/wp.prolinedirect.co.uk\/wp-content\/uploads\/2026\/03\/image-2-scaled-e1773917905606.png.webp\" alt=\"Assembly Service Coverage Map\"\u003e\u003c\/div\u003e\n\u003ch4\u003eDelivery vs assembly date\u003c\/h4\u003e\n\u003cp\u003eThe assembly date may differ from the delivery date shown on the product page.\u003cbr\u003eOnce your order has been placed, our team will contact you to confirm and arrange a suitable assembly date.\u003c\/p\u003e\n\u003ch4\u003eWhat happens on the day\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eArrival with the sauna\u003c\/li\u003e\n\u003cli\u003eOffloading of all components\u003c\/li\u003e\n\u003cli\u003eAssembly and positioning at the location specified by the customer\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eImportant to note\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eWe do not carry out any electrical connections\u003c\/li\u003e\n\u003cli\u003eWe do not remove packaging or waste from the site\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch2 class=\"woost-tab-heading\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eHow much does it cost to run a sauna?\u003cbr\u003e\u003c\/strong\u003eThe cost of running a sauna depends on its wattage and how long you use it. Our saunas typically range from 2kW to 10kW. On average, running a sauna for an hour can cost between \u003cstrong\u003e£0.50 and £2.50\u003c\/strong\u003e\u003cspan\u003e. Please refer to this \u003c\/span\u003e\u003ca href=\"https:\/\/www.sust-it.net\/energy-calculator.php\"\u003eElectricity cost calculator\u003c\/a\u003e\u003cspan\u003e for more information.\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat warranties do you carry on the saunas?\u003cbr\u003e\u003c\/strong\u003eOur warranty term is: 1 Year for electric parts, 2 Years for wooden parts.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre the Saunas easy to assembly\/Install?\u003cbr\u003e\u003c\/strong\u003eAll our saunas come with Assembly Instructions which are easy and detailed. Saunas are assembled together using buckles\/clamps with some screwing involved.\u003cbr\u003eFor Infrared Light saunas, the sauna can be plugged into any standard outlet in the house. For traditional steam saunas, the power needs to be connected to the mains of the house by an electrician.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow hot does the sauna get and how hot does the steam get?\u003cbr\u003e\u003c\/strong\u003eFor traditional steam saunas, the heat time and temperature can set by control panel is: 0-90mins and 18-99 degrees Celsius. For Infrared Saunas, the maximum temperature is 65 degrees Celsius.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhen is the right time to add water to the sauna stones?\u003cbr\u003e\u003c\/strong\u003eTo ensure optimal performance and to avoid potential damage, only add water once the sauna stones have reached the appropriate temperature. This heat level is necessary to properly vaporize the water, creating the ideal steam environment.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy shouldn’t I add water before the stones are hot?\u003cbr\u003e\u003c\/strong\u003eAdding water to cold or warm stones can cause inefficient steam production, leading to a less satisfying sauna experience. In some cases, this may even damage the heating elements or stones, reducing the lifespan of your sauna heater.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow can I tell if the stones are hot enough?\u003cbr\u003e\u003c\/strong\u003eThe stones should feel intensely hot when you bring your hand near them (without touching!). Many sauna heaters also feature a temperature gauge to help you monitor the heat levels. Wait until the gauge reads at least 300°F before adding water.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat type of water should I use?\u003cbr\u003e\u003c\/strong\u003eUse clean, distilled water when possible. Tap water with high mineral content may cause buildup on the stones and heater over time, affecting performance.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre there any precautions I need to take like anti-mould?\u003cbr\u003e\u003c\/strong\u003eIf the sauna is placed in a very humid area, try to keep it dry. otherwise, no need do any precaution.\u003c\/p\u003e\n\u003cdiv class=\"faq-section\"\u003e\n\u003cp\u003e\u003cstrong\u003eWhat size cable does this need for its supply?\u003cbr\u003e\u003c\/strong\u003eFor 3000W saunas, you would need at least 2.5mm size power input wire. For 4500W saunas, you would need at least 4mm power input wire.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWould an RCD be needed for the steam sauna?\u003cbr\u003e\u003c\/strong\u003eYes, a REC protection from the board would be needed. Please talk to your local electrician for details.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it delivered assembled?\u003cbr\u003e\u003c\/strong\u003eNo, the sauna is delivered dissembled and flat packed. Assembly is simple and easy with assemble videos or PDF manual available.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow long does it take to heat up once you turn it on?\u003cbr\u003e\u003c\/strong\u003eWhen the external environment temperature is 10 degrees Celsius, it takes about 15 minutes to heat up to 50 degrees Celsius, and about 30 minutes to heat up to 70 degrees Celsius.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the timber from the outside get hot? Is it safe for children to touch this?\u003cbr\u003e\u003c\/strong\u003eThe timber outside is not hot, just little warmer and safety for touch.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the outside be painted or will this affect it in anyway?\u003c\/strong\u003e\u003cbr\u003eYes, outside of sauna with wood nature colour paint.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat type of wood is it made of?\u003cbr\u003e\u003c\/strong\u003eThe wood is Canadian hemlock.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOxygen lonizer. What is this and what is the cost?\u003cbr\u003e\u003c\/strong\u003eThis is negative ion generator, please email us for a price.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the heater not come with stones?\u003cbr\u003e\u003c\/strong\u003eYes, the sauna stones are included. Please thoroughly rinse sauna stones before use.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMobile App system, how much would this cost?\u003cbr\u003e\u003c\/strong\u003eThe control panel already includes this function. Please check description for confirmation.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow much do the heater elements cost if they stop working?\u003cbr\u003e\u003c\/strong\u003ePlease email for a price for the replacement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eInstructions\u003cbr\u003e\n\u003c\/h3\u003e\n\u003ctable width=\"100%\" style=\"width: 99.9589%; height: 58.7499px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 49.8607%; height: 19.5833px;\"\u003eThermo Black 220 Technical Drawing\u003c\/td\u003e\n\u003ctd style=\"width: 49.8607%; height: 19.5833px;\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1029\/2396\/0650\/files\/260306_Thermo_Black_220_Drawing-compressed.pdf?v=1777646602\" target=\"_blank\"\u003eView\/Download\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 49.8607%; height: 19.5833px;\"\u003eKajo Heater Instruction Manual\u003c\/td\u003e\n\u003ctd style=\"width: 49.8607%; height: 19.5833px;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1029\/2396\/0650\/files\/EN_Saunamo-Kajo_A4_2026.pdf?v=1777644954\" target=\"_blank\"\u003eView\/Download\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5833px;\"\u003e\n\u003ctd style=\"width: 49.8607%; height: 19.5833px;\"\u003eLED Waterproof Power Supply\u003c\/td\u003e\n\u003ctd style=\"width: 49.8607%; height: 19.5833px;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1029\/2396\/0650\/files\/2.5m-A-30W_1.pdf?v=1777645282\" rel=\"noopener\" target=\"_blank\"\u003eView\/Download\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Centuraheat","offers":[{"title":"Default Title","offer_id":57451442635078,"sku":"HEAT-SM1017","price":8634.49,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/5750\/4326\/files\/HEAT-SM10185.png?v=1790262722","url":"https:\/\/gweniquewellness.co.uk\/products\/thermo-black-220-indoor-steam-sauna","provider":"Gwenique Wellness","version":"1.0","type":"link"}