{"product_id":"eos-invisio-midi-electric-sauna-heater","title":"EOS Invisio Midi Electric Sauna Heater","description":"\u003cp\u003eThe EOS Invisio Midi is the sauna heater you don't see. Engineered for \u003cstrong\u003econcealed installation directly under the sauna bench\u003c\/strong\u003e, it disappears into the cabin — no bulky tower taking up floor space, no exposed hot surfaces, just clean, open benches and authentic Finnish heat rising from below. Built in Germany by EOS, it ships complete with a safety grill and a stainless water-infusion set for traditional löyly.\u003c\/p\u003e\n\u003ch3\u003eHidden Under the Bench\u003c\/h3\u003e\n\u003cp\u003eThe Invisio Midi tucks under your bench with only a \u003cstrong\u003e4\" (10 cm) gap\u003c\/strong\u003e to the screen wall, reclaiming the floor and bench space a conventional heater would occupy. The result is a cleaner, more spacious cabin and a safer one — with the heater concealed, there's no exposed unit to brush against.\u003c\/p\u003e\n\u003ch3\u003eTraditional Löyly, Built In\u003c\/h3\u003e\n\u003cp\u003eA concealed heater doesn't mean giving up steam. The included \u003cstrong\u003estainless steel water-infusion set\u003c\/strong\u003e lets you ladle water through a discreet funnel onto the hidden stones, releasing soft, even steam across the cabin. The full \u003cstrong\u003e44 lb stone load\u003c\/strong\u003e holds the heat for deep, lasting warmth.\u003c\/p\u003e\n\u003ch3\u003eSafety Grill Included\u003c\/h3\u003e\n\u003cp\u003eEvery Invisio Midi includes its \u003cstrong\u003ecover protection grill\u003c\/strong\u003e — an integral part of the heater that shields the elements from anything falling from above. It's required for every installation and comes in the box, so nothing extra to source.\u003c\/p\u003e\n\u003ch3\u003eAdjustable to Your Build\u003c\/h3\u003e\n\u003cp\u003eBench heights vary, so the Invisio Midi does too. Its \u003cstrong\u003eheight adjusts from 28.3\" to 30.3\"\u003c\/strong\u003e (± 6 cm) on stainless feet, letting your installer set it flush to your bench construction. Optimized heating-element placement also means faster heat-up than a standard concealed unit.\u003c\/p\u003e\n\u003ch3\u003eFor the Home Sauna\u003c\/h3\u003e\n\u003cp\u003eFor a design-led home sauna, the Invisio Midi is the cleanest look you can get — the bench runs uninterrupted with no heater in sight. The \u003cstrong\u003e240V single-phase\u003c\/strong\u003e models (6 or 9 kW) run on a residential circuit, ideal for a premium basement or garden-room build in \u003cstrong\u003estainless steel\u003c\/strong\u003e or \u003cstrong\u003eanthracite\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eFor Spas, Studios \u0026amp; Commercial Rooms\u003c\/h3\u003e\n\u003cp\u003eThe Invisio Midi scales up for commercial and light-commercial use. The \u003cstrong\u003e208V three-phase\u003c\/strong\u003e configurations reach \u003cstrong\u003e12 kW\u003c\/strong\u003e, heating rooms up to roughly 634 cu ft — well suited to hotel spas, wellness centers, and studio saunas where a concealed, tamper-resistant heater is a real advantage. Multi-room projects receive dedicated support and project pricing from our team.\u003c\/p\u003e\n\u003ch3\u003eSized for Your Room\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e6 kW\u003c\/strong\u003e heats roughly 214–280 cu ft, \u003cstrong\u003e9 kW\u003c\/strong\u003e covers 314–494 cu ft, and \u003cstrong\u003e12 kW\u003c\/strong\u003e handles 494–634 cu ft (208V three-phase only). Every Invisio Midi is available in \u003cstrong\u003e240V 2-phase\u003c\/strong\u003e (6 and 9 kW) or \u003cstrong\u003e208V 3-phase\u003c\/strong\u003e (6, 9, and 12 kW), 60 Hz — we confirm the exact output, voltage, and finish with you before your order is placed.\u003c\/p\u003e\n\u003ch3\u003eGerman Build Quality\u003c\/h3\u003e\n\u003cp\u003eZinc-plated steel body with a stainless steel top cover, stainless feet, and a stainless water-splash gutter. Designed and manufactured by EOS in Germany.\u003c\/p\u003e\n\u003ch3\u003eRequired Control System (Sold Separately)\u003c\/h3\u003e\n\u003cp\u003eThe Invisio Midi is operated by a separate wall control that manages temperature, timing, and safety cutoff. It requires an \u003cstrong\u003eEOS control system — the EOS Touch 3 or EOS EmoTec D\u003c\/strong\u003e. Controls must be EOS-brand and are added to your quote. Sauna stones are also sold separately. Complete your setup with \u003cstrong\u003eEOS sauna stones, an aromatherapy infusion vessel, a climate station, and a bucket-and-ladle set\u003c\/strong\u003e — ask your specialist about bundled pricing so everything arrives together.\u003c\/p\u003e\n\u003ch3\u003eWhy Buy from Sauna Republic\u003c\/h3\u003e\n\u003cp\u003eSauna Republic is an authorized EOS dealer — your purchase includes the full manufacturer warranty, expert guidance from our sauna specialists on heater sizing for your room, control pairing, and stone selection, shipping calculated at checkout, and financing options. We serve both homeowners and commercial clients — spas, hotels, fitness centers, and wellness studios receive dedicated project support with multi-unit pricing, bulk ordering, and commercial warranty options. We're available 7 days a week at (302) 273-0861 or info@thesaunarepublic.com.\u003c\/p\u003e\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eEOS Invisio Midi under-bench sauna heater in your chosen output, voltage, and finish\u003c\/li\u003e\n\u003cli\u003eCover protection safety grill (required — included)\u003c\/li\u003e\n\u003cli\u003eStainless steel water-infusion set with funnel, hose, and elbow\u003c\/li\u003e\n\u003cli\u003eIntegrated stainless rock store\u003c\/li\u003e\n\u003cli\u003eAdjustable stainless feet\u003c\/li\u003e\n\u003cli\u003eInstallation \u0026amp; operation manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAvailable configurations\u003c\/strong\u003e (confirmed with you at order): finish — Stainless Steel or Anthracite · output — 6, 9, or 12 kW · voltage — 240V 2-Phase (6 \u0026amp; 9 kW) or 208V 3-Phase (6, 9 \u0026amp; 12 kW).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRequired, sold separately:\u003c\/strong\u003e EOS control system (Touch 3 or EmoTec D) · sauna stones (44 lbs, 2–4\" \/ 5–10 cm).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs well with:\u003c\/strong\u003e EOS sauna stones, an aromatherapy infusion vessel, a Lux climate station, and a bucket-and-ladle set — ask about bundled pricing.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eConcealed under-bench design\u003c\/strong\u003e — the heater hides completely beneath the bench for a clean, open cabin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOnly a 4\" gap needed\u003c\/strong\u003e — installs close to the screen wall, reclaiming bench and floor space\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafer by design\u003c\/strong\u003e — no exposed hot unit to contact; ideal for family and commercial rooms\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater infusion set included\u003c\/strong\u003e — traditional löyly through a stainless funnel to the hidden stones\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety grill included\u003c\/strong\u003e — integral cover protection, required on every install\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight adjustable\u003c\/strong\u003e — 28.3\"–30.3\" to match your bench construction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree outputs\u003c\/strong\u003e — 6, 9, and 12 kW to match room size\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHome or commercial power\u003c\/strong\u003e — 240V single-phase or 208V three-phase, 60 Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFaster heat-up\u003c\/strong\u003e — optimized heating-element placement\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGerman engineering\u003c\/strong\u003e — designed and built by EOS\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ch3\u003ePerformance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower outputs:\u003c\/strong\u003e 6.0 kW \/ 9.0 kW \/ 12.0 kW\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeating elements:\u003c\/strong\u003e 6 kW = 3 x 2000W · 9 kW = 6 x 1500W · 12 kW = 6 x 2000W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoom size (6 kW):\u003c\/strong\u003e approx. 214–280 cu ft\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoom size (9 kW):\u003c\/strong\u003e approx. 314–494 cu ft\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoom size (12 kW):\u003c\/strong\u003e approx. 494–634 cu ft (208V 3-phase only)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStone capacity:\u003c\/strong\u003e approx. 44 lbs (20 kg); stones 2–4\" (5–10 cm), sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eElectrical\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection:\u003c\/strong\u003e 240V 2-Phase (6 \u0026amp; 9 kW) or 208V 3-Phase (6, 9 \u0026amp; 12 kW) AC, 60 Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum wire:\u003c\/strong\u003e 12 AWG (copper)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCircuit\/breaker:\u003c\/strong\u003e sized by a licensed electrician to the heater's nameplate rating\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl:\u003c\/strong\u003e EOS Touch 3 or EmoTec D required (sold separately)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e hardwired, concealed under the sauna bench\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDimensions \u0026amp; Build\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions (H x W x D):\u003c\/strong\u003e 28.3\"–30.3\" (adjustable) x 45.7\" x 15\" (710–770 x 1160 x 380 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight adjustment:\u003c\/strong\u003e ± 2.4\" (± 6 cm) on stainless feet\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGap to screen wall:\u003c\/strong\u003e 4\" (10 cm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight (without stones):\u003c\/strong\u003e 6 kW ≈ 53 lbs · 9 kW ≈ 55 lbs · 12 kW ≈ 60 lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum ceiling height:\u003c\/strong\u003e 74.8\" (1900 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterials:\u003c\/strong\u003e zinc-plated steel body, stainless steel top cover and feet, stainless water-splash gutter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation type:\u003c\/strong\u003e concealed, under the sauna bench\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in Germany\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-Year Limited (manufacturer)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eResources\u003c\/h2\u003e\n\u003cp\u003eDetailed technical documentation — including the Invisio Midi data sheet and full installation \u0026amp; operation manual with under-bench clearances, wiring, and water-infusion setup — is available on request from our specialists to share with your electrician or contractor.\u003c\/p\u003e\n\u003ch2\u003eQuestions?\u003c\/h2\u003e\n\u003cp\u003eOur sauna specialists are here 7 days a week to help you plan the under-bench installation, size the Invisio Midi for your room, pair the right control, and complete your quote. Call \u003cstrong\u003e(302) 273-0861\u003c\/strong\u003e, email \u003cstrong\u003einfo@thesaunarepublic.com\u003c\/strong\u003e, or start a live chat.\u003c\/p\u003e","brand":"EOS","offers":[{"title":"Default Title","offer_id":48717400244378,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1536\/3994\/files\/eos-invisio-midi-under-bench-sauna-heater-stainless-steel.jpg?v=1783684375","url":"https:\/\/thesaunarepublic.com\/products\/eos-invisio-midi-electric-sauna-heater","provider":"Sauna Republic","version":"1.0","type":"link"}