{"product_id":"nakoair-os20-solar-air-heater-mechanical-thermostat-30m2","title":"Nakoair OS20 Solar Air Heater – Mechanical Thermostat – For Rooms up to 30m²","description":"\u003ch2\u003eFree Solar Heating for Medium Rooms – No Heating Bills\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eNakoair OS20 Solar Air Heater\u003c\/strong\u003e is our best-selling model for rooms up to 30m². \nPerfect for living rooms, bedrooms, holiday homes, and workshops. Heat your home with abundant, free solar energy.\u003c\/p\u003e\n\n\u003ch3\u003e🌟 Why Choose the OS20?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFree Heating All Sunny Days:\u003c\/strong\u003e Reduces or eliminates heating costs from spring through winter.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMechanical Thermostat:\u003c\/strong\u003e Automatically stops the fan when your set temperature is reached – no overheating.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFresh Air Daily:\u003c\/strong\u003e Replaces stale indoor air with warm, oxygen-rich outdoor air. Eliminates odors, formaldehyde, and allergens.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMold Prevention:\u003c\/strong\u003e Continuous ventilation keeps humidity at the optimal 40–70% level. Protects wooden furniture and building structure.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDIY Installation:\u003c\/strong\u003e Install in 1 hour. Hole saw and all accessories included. No electrician needed.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUltra-Long Lifespan:\u003c\/strong\u003e PV panel lasts 20 years. Double ball fan rated for 70,000 hours.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e🔧 Technical Specifications\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOS20\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRecommended room size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 30 m²\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd\u003e\u003cstrong\u003eMax air flow\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e88 m³\/h\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature rise\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 10°C above outdoor temperature\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd\u003e\u003cstrong\u003eAnnual heating delivered\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 525 kWh\/year\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThermostat\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMechanical thermostat\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd\u003e\u003cstrong\u003eSolar panel power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e18W\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFan\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSUNON 12V, 3.4W, double ball bearing\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd\u003e\u003cstrong\u003eGlass\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLow-iron solar tempered glass, 92% light transmittance\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSee product images\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd\u003e\u003cstrong\u003eNet weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSee product images\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCertification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEN12975, ISO9806, TÜV, Solar Keymark, CE\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10 years (panel), 2 years (parts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003e🏠 Perfect For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eLiving rooms \u0026amp; bedrooms (up to 30m²)\u003c\/li\u003e\n  \u003cli\u003eHoliday homes \u0026amp; cabins\u003c\/li\u003e\n  \u003cli\u003eWorkshops \u0026amp; garages\u003c\/li\u003e\n  \u003cli\u003eBasements (mold \u0026amp; moisture control)\u003c\/li\u003e\n  \u003cli\u003eSummer houses \u0026amp; cottages\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e💰 Return on Investment\u003c\/h3\u003e\n\u003cp\u003eEstimated annual energy supplement: \u003cstrong\u003e525 kWh\u003c\/strong\u003e. Most customers recover the cost within \u003cstrong\u003e2–3 years\u003c\/strong\u003e. \nAfter payback, enjoy 15+ years of free heating. Compare this to electric heaters that cost hundreds per year to run.\u003c\/p\u003e\n\n\u003ch3\u003e🌱 Also Available: OS20LCD (LCD Thermostat Version)\u003c\/h3\u003e\n\u003cp\u003ePrefer digital temperature control? Check out the \u003ca href=\"\/collections\/solar-panel-with-standard-function\/products\/air-collector-os22-solar-air-heater-air-ventilator-with-lcd-thermostat-heating-air-conditioner-conditioning-exhaust-fan-ventilator-thermal-panel-dehumidifier-heat-pump-ventilation-dehumidification-water-attic-roof-vent-gable\"\u003eOS20LCD\u003c\/a\u003e with smart LCD thermostat and 5 operating modes.\u003c\/p\u003e\n\n\u003ch3\u003e📦 What's In the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eOS20 solar air heater main unit\u003c\/li\u003e\n  \u003cli\u003eMechanical thermostat\u003c\/li\u003e\n  \u003cli\u003e135mm hole saw\u003c\/li\u003e\n  \u003cli\u003eAir duct \u0026amp; air outlet\u003c\/li\u003e\n  \u003cli\u003eMounting accessories \u0026amp; manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e❓ FAQ\u003c\/h3\u003e\n\u003cdetails\u003e\n  \u003csummary\u003e\u003cstrong\u003eHow much can I save?\u003c\/strong\u003e\u003c\/summary\u003e\n  \u003cp\u003eOn sunny days, the OS20 provides completely free heating. Over a year, it typically delivers 525 kWh of heating energy – equivalent to €100–200 of electricity or gas, depending on local rates.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003e\u003cstrong\u003eDoes it work at night?\u003c\/strong\u003e\u003c\/summary\u003e\n  \u003cp\u003eThe OS20 requires sunlight to operate. For nighttime heating, we recommend combining it with your existing heating system or insulating your home well to retain daytime heat.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003e\u003cstrong\u003eIs it noisy?\u003c\/strong\u003e\u003c\/summary\u003e\n  \u003cp\u003eNo. The SUNON fan is whisper-quiet. You'll barely notice it running.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch3\u003e✅ Certified \u0026amp; Trusted\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eTÜV Rheinland\u003c\/strong\u003e | \u003cstrong\u003eEN12975 \u0026amp; ISO9806\u003c\/strong\u003e | \u003cstrong\u003eSolar Keymark\u003c\/strong\u003e | \u003cstrong\u003eCE marked\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOver 4,000 units sold per year. Trusted by customers across Europe.\u003c\/p\u003e\n\n\u003chr\u003e\n\u003cp\u003e\u003cem\u003ePrice includes VAT and customs duties. Free EU delivery to your door.\u003c\/em\u003e\u003c\/p\u003e","brand":"OSCAR","offers":[{"title":"Default Title","offer_id":52981513879816,"sku":"OS20 with mechanical thermostat","price":320.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0032\/7263\/8576\/files\/20_5ddb8a46-8973-4dca-aa91-d2516aa321ba.jpg?v=1770451217","url":"https:\/\/nakoair.net\/products\/nakoair-os20-solar-air-heater-mechanical-thermostat-30m2","provider":"Nakoair solar air heater","version":"1.0","type":"link"}