{"title":"Nakoair Solar Air Heaters","description":null,"products":[{"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=\"\/en-fr\/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"},{"product_id":"nakoair-os42-solar-air-heater-ventilator-2-in-1-lcd-thermostat-100m2","title":"Nakoair OS42 Solar Air Heater \u0026 Ventilator – 2-in-1 with LCD Thermostat – Up to 100m²","description":"\u003ch2\u003eMaximum Solar Heating Power – For Large Spaces Up to 100m²\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eNakoair OS42\u003c\/strong\u003e is our largest and most powerful solar air heater. \nWith \u003cstrong\u003e135 m³\/h airflow\u003c\/strong\u003e and up to \u003cstrong\u003e25°C temperature boost\u003c\/strong\u003e, it's designed for large rooms, open-plan spaces, \nand commercial applications. The same 2-in-1 function as the OS22\/32, scaled up for maximum impact.\u003c\/p\u003e\n\n\u003ch3\u003e🌟 Why Choose the OS42?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Heating Power:\u003c\/strong\u003e 135 m³\/h airflow. Up to 25°C temperature boost. The most powerful model we make.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLarge Space Capacity:\u003c\/strong\u003e Heats up to 70–100m² effectively. Perfect for large homes and commercial spaces.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExceptional Energy Yield:\u003c\/strong\u003e \u003cstrong\u003e1,418 kWh\/year\u003c\/strong\u003e – the highest in the Nakoair range. Outstanding payback.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e2-in-1 Function:\u003c\/strong\u003e Heats fresh outdoor air + circulates indoor air. Exclusive to OS22\/32\/42 series.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e72% Heating Efficiency:\u003c\/strong\u003e Advanced absorption board technology captures more solar energy.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLCD Smart Thermostat:\u003c\/strong\u003e 5 operating modes, real-time climate display, automatic energy switching.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e🔄 2-in-1 Function\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eMode 1 – Fresh Air Heating:\u003c\/strong\u003e Morning and afternoon – heats fresh outdoor air and blows it indoors.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMode 2 – Indoor Circulation (Exclusive):\u003c\/strong\u003e Noon time – circulates and reheats indoor air. The most effective way to raise room temperature. Can be extended at noon in spring and autumn for even more ventilation.\u003c\/p\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\u003eOS42\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFunction\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2-in-1: fresh air heating + indoor air circulation\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd\u003e\u003cstrong\u003eRecommended room size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e70–100 m²\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax air flow\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e135 m³\/h\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature rise\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 25°C above outdoor temperature\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeating efficiency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e72%\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. 1,418 kWh\/year\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSun intensity performance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1,380W\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd\u003e\u003cstrong\u003eThermostat\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLCD digital thermostat, 5 modes\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSolar panel power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e28W\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd\u003e\u003cstrong\u003eFan\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSUNON 12V, 5.4W, double ball bearing\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNoise level\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e45 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e197 × 100 × 6 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNet weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e26 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd\u003e\u003cstrong\u003eCarton size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e204 × 106 × 9 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGross weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e34 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\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\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\u003eLarge living rooms \u0026amp; open-plan homes (70–100m²)\u003c\/li\u003e\n  \u003cli\u003eCommercial spaces (shops, small offices, studios)\u003c\/li\u003e\n  \u003cli\u003eLarge workshops \u0026amp; garages\u003c\/li\u003e\n  \u003cli\u003eWarehouses \u0026amp; storage buildings\u003c\/li\u003e\n  \u003cli\u003eAnyone wanting maximum solar heating power\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e💰 Highest Energy Yield – Fastest Payback\u003c\/h3\u003e\n\u003cp\u003eThe OS42 delivers an exceptional \u003cstrong\u003e1,418 kWh\/year\u003c\/strong\u003e of free solar heating. \nFor large spaces that would otherwise cost hundreds of euros per year to heat, \nthe OS42 pays for itself in \u003cstrong\u003e2–3 years\u003c\/strong\u003e and delivers free heat for 15+ more years.\u003c\/p\u003e\n\n\u003ch3\u003e📦 What's In the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eOS42 solar air heater main unit (large size: 197×100cm)\u003c\/li\u003e\n  \u003cli\u003eLCD digital thermostat\u003c\/li\u003e\n  \u003cli\u003e5–12V USB voltage boost cable\u003c\/li\u003e\n  \u003cli\u003e135mm hole saw\u003c\/li\u003e\n  \u003cli\u003eAir duct, automatic air outlets\u003c\/li\u003e\n  \u003cli\u003eActivated carbon filter\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\u003eIs the OS42 too big for a normal house?\u003c\/strong\u003e\u003c\/summary\u003e\n  \u003cp\u003eThe OS42 is designed for 70–100m². If your space is smaller, the OS32 (up to 60m²) or OS22 (up to 40m²) may be a better fit. However, if you have a large open-plan living area, the OS42 is the right choice.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003e\u003cstrong\u003eCan I install two OS42 units?\u003c\/strong\u003e\u003c\/summary\u003e\n  \u003cp\u003eYes! For very large spaces or whole-home heating, many customers install multiple units facing different directions (e.g., southeast + southwest) to capture sunlight throughout the day.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003e\u003cstrong\u003eDelivery – is the OS42 too heavy to handle?\u003c\/strong\u003e\u003c\/summary\u003e\n  \u003cp\u003eThe OS42 weighs 26kg (net) \/ 34kg (gross). It's manageable for two people. Free delivery to your door is included. If you have concerns about handling, please contact us – we can provide guidance or recommend a local installer.\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 – full certification including thermal performance, freeze resistance, mechanical load, and impact resistance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEN12975 \u0026amp; ISO9806 certified\u003c\/strong\u003e | \u003cstrong\u003eSolar Keymark\u003c\/strong\u003e | \u003cstrong\u003eCE marked\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe OS42 meets the highest European quality standards for solar thermal products.\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\n\u003cp\u003e\u003cem\u003e🇩🇪 \u003cstrong\u003eGermany customers:\u003c\/strong\u003e OS42 qualifies for BAFA solar subsidy. Apply before purchase.\u003c\/em\u003e\u003c\/p\u003e","brand":"OSCAR","offers":[{"title":"Default Title","offer_id":39323034976290,"sku":"OS42lcd","price":660.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0032\/7263\/8576\/files\/42_b8465b86-ebb4-4b1e-959e-2fbf85771f8a.jpg?v=1767167227"},{"product_id":"nakoair-os20lcd-solar-air-heater-lcd-thermostat-30m2","title":"Nakoair OS20LCD Solar Air Heater with LCD Thermostat – Digital Temperature Control – Up to 30m²","description":"\u003ch2\u003eSmart Solar Heating with LCD Thermostat – Set It \u0026amp; Forget It\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eNakoair OS20LCD\u003c\/strong\u003e combines the proven OS20 heating performance with a \u003cstrong\u003esmart curved LCD touchscreen thermostat\u003c\/strong\u003e. \nSee real-time temperature and humidity. Choose from 5 operating modes. Automatic solar-to-electric switching. \nThe most convenient way to heat rooms up to 30m² with free solar energy.\u003c\/p\u003e\n\n\u003ch3\u003e🌟 Why Choose the OS20LCD?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLCD Smart Thermostat:\u003c\/strong\u003e Curved touchscreen displays indoor\/outdoor temperature \u0026amp; humidity. Precision comfort control.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e5 Operating Modes:\u003c\/strong\u003e Auto, humidity control, manual, heating, and ventilation – adapt to any weather.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAuto Energy Switching:\u003c\/strong\u003e Uses solar power when sunny; automatically switches to electricity on cloudy days (less than 10 kWh\/year).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAutomatic Air Vents:\u003c\/strong\u003e Two air outlets open\/close automatically. 8mm thermal insulation cotton inside. No heat loss when off.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eActivated Carbon Filter:\u003c\/strong\u003e Dust filtration, odor removal, insect prevention, noise reduction.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy DIY Install:\u003c\/strong\u003e Same simple installation as OS20. 1-hour setup. All tools included.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e🎛️ 5 Smart Operating Modes\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n  \u003ctr style=\"background:#e8f4fd;\"\u003e\n\u003ctd\u003e\u003cstrong\u003eAuto Mode\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAutomatically selects heating or ventilation based on temperature \u0026amp; sunlight\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHumidity Control Mode\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMaintains 40–70% RH by comparing indoor\/outdoor moisture levels\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#e8f4fd;\"\u003e\n\u003ctd\u003e\u003cstrong\u003eManual Mode\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYou decide when it runs – full control anytime\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeating Mode\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePrioritizes heating – maximizes temperature boost\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#e8f4fd;\"\u003e\n\u003ctd\u003e\u003cstrong\u003eVentilation Mode\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFocuses on air exchange – ideal for stuffy rooms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\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\u003eOS20LCD\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\u003eLCD digital touchscreen, 5 modes\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd\u003e\u003cstrong\u003eAuto solar\/electric switch\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes (less than 10 kWh\/year on electric)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAir vent\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAutomatic open\/close, thermal insulation\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd\u003e\u003cstrong\u003eFilter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eActivated carbon (dust, odor, insect)\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 that need automatic climate control\u003c\/li\u003e\n  \u003cli\u003ePeople who want precision temperature control\u003c\/li\u003e\n  \u003cli\u003eHomes where someone is frequently present (recommended to choose LCD version for occupied rooms)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e💡 How the Auto Switch Works\u003c\/h3\u003e\n\u003cp\u003eOn sunny days, the collector heats your room all day. At noon (spring\/autumn\/winter), it automatically ventilates with fresh outdoor air. \nOn cloudy or rainy days, it seamlessly switches to electricity to keep providing fresh air (consumption: less than 10 kWh\/year – minimal cost).\u003c\/p\u003e\n\n\u003ch3\u003e📦 What's In the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eOS20LCD solar air heater main unit\u003c\/li\u003e\n  \u003cli\u003eLCD digital thermostat (curved touchscreen)\u003c\/li\u003e\n  \u003cli\u003e5–12V USB voltage boost cable\u003c\/li\u003e\n  \u003cli\u003e135mm hole saw\u003c\/li\u003e\n  \u003cli\u003eAir duct, air outlets (×2, automatic)\u003c\/li\u003e\n  \u003cli\u003eActivated carbon filter\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\u003eWhat's the difference between OS20 and OS20LCD?\u003c\/strong\u003e\u003c\/summary\u003e\n  \u003cp\u003eOS20 has a mechanical thermostat (simple, reliable). OS20LCD adds a digital LCD screen with 5 smart modes, auto solar\/electric switching, and real-time temperature\/humidity display. Choose OS20LCD if the room is frequently occupied.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003e\u003cstrong\u003eDoes the LCD thermostat use a lot of electricity?\u003c\/strong\u003e\u003c\/summary\u003e\n  \u003cp\u003eNo. The thermostat is ultra-low power. Even on cloudy days when the fan uses electric power, total consumption is less than 10 kWh\/year – less than €5\/year in most European countries.\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\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\n\u003cp\u003e\u003cem\u003e🇩🇪 \u003cstrong\u003eGermany customers:\u003c\/strong\u003e OS20LCD qualifies for BAFA solar subsidy. Apply online before purchase.\u003c\/em\u003e\u003c\/p\u003e","brand":"OSCAR","offers":[{"title":"Default Title","offer_id":52981515288840,"sku":"OS20LCD","price":349.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0032\/7263\/8576\/files\/20_45d4b719-ec13-412f-aa7b-df8fbe760a9a.jpg?v=1767168063"},{"product_id":"nakoair-os30lcd-solar-air-heater-lcd-thermostat-50m2","title":"Nakoair OS30LCD Solar Air Heater with LCD Thermostat – Digital Control – Up to 50m²","description":"\u003ch2\u003ePowerful Heating Meets Smart Control – For Rooms Up to 50m²\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eNakoair OS30LCD\u003c\/strong\u003e combines the high-capacity heating of the OS30 with our \u003cstrong\u003esmart curved LCD touchscreen thermostat\u003c\/strong\u003e. \nPerfect for larger frequently-occupied rooms where precision comfort control matters. \nHeat up to 50m² with free solar energy – automatically.\u003c\/p\u003e\n\n\u003ch3\u003e🌟 Why Choose the OS30LCD?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Capacity Heating:\u003c\/strong\u003e 105 m³\/h airflow for rooms up to 50m². 15°C temperature boost on sunny days.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLCD Smart Thermostat:\u003c\/strong\u003e Real-time indoor\/outdoor temperature \u0026amp; humidity display. Touchscreen control.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e5 Operating Modes:\u003c\/strong\u003e Auto, humidity control, manual, heating, and ventilation – total flexibility.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAutomatic Energy Switching:\u003c\/strong\u003e Solar-powered when sunny; automatically uses minimal electricity on cloudy days.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAutomatic Air Vents (×2):\u003c\/strong\u003e Open and close automatically. 8mm insulation cotton prevents heat loss when off.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e780 kWh\/Year:\u003c\/strong\u003e Exceptional energy yield. Payback in 2–3 years.\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\u003eOS30LCD\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 50 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\u003e105 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. 15°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. 780 kWh\/year\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeating efficiency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e70%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd\u003e\u003cstrong\u003eThermostat\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLCD digital touchscreen, 5 modes, auto solar\/electric switch\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAir vent\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAutomatic open\/close (×2), thermal insulation\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd\u003e\u003cstrong\u003eFilter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eActivated carbon (dust, odor, insect, noise)\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, double ball bearing, 70,000h lifespan\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\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\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\u003eMain living rooms \u0026amp; open-plan spaces (up to 50m²)\u003c\/li\u003e\n  \u003cli\u003eHomes where someone is present most of the day\u003c\/li\u003e\n  \u003cli\u003ePeople who want precision digital climate control\u003c\/li\u003e\n  \u003cli\u003eWorkshops \u0026amp; studios where comfort matters\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e💡 Smart Features Explained\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eAutomatic Ventilation:\u003c\/strong\u003e When outdoor temperature is higher than indoor (spring\/autumn evenings), the system automatically ventilates to warm or cool your home naturally.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHumidity Control:\u003c\/strong\u003e Automatically compares indoor and outdoor moisture content. Dry outdoor air pushes out humid indoor air – naturally dehumidifies. Or vice versa in dry climates.\u003c\/p\u003e\n\n\u003ch3\u003e📦 What's In the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eOS30LCD solar air heater main unit\u003c\/li\u003e\n  \u003cli\u003eLCD digital thermostat (curved touchscreen)\u003c\/li\u003e\n  \u003cli\u003e5–12V USB voltage boost cable\u003c\/li\u003e\n  \u003cli\u003e135mm hole saw\u003c\/li\u003e\n  \u003cli\u003eAir duct, automatic air outlets (×2)\u003c\/li\u003e\n  \u003cli\u003eActivated carbon filter\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\u003eOS30 vs OS30LCD – which should I choose?\u003c\/strong\u003e\u003c\/summary\u003e\n  \u003cp\u003eChoose OS30 if you want simple, reliable mechanical control. Choose OS30LCD if the room is frequently occupied and you want precision comfort, auto modes, and real-time climate display. For frequently used rooms, we recommend the LCD version.\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\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\n\u003cp\u003e\u003cem\u003e🇩🇪 \u003cstrong\u003eGermany customers:\u003c\/strong\u003e High-quality solar thermal products may qualify for BAFA subsidy. Check eligibility before purchase.\u003c\/em\u003e\u003c\/p\u003e","brand":"OSCAR","offers":[{"title":"Default Title","offer_id":44600893178120,"sku":"OS30LCD","price":499.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0032\/7263\/8576\/files\/30_a22442bb-e658-4c59-be49-3f8b9fc3074b.jpg?v=1767168134"}],"url":"https:\/\/nakoair.net\/en-fr\/collections\/nakoair-heaters.oembed","provider":"Nakoair solar air heater","version":"1.0","type":"link"}