{"product_id":"aquasun-300l-non-pressurized-solar-water-heater-30-vacuum-tubes","title":"Aquasun 300L Non-Pressurized Solar Water Heater – 30 Vacuum Tubes","description":"\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-8 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv dir=\"auto\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003cp class=\"PDq2pG_selectionAnchorContainer\"\u003eThe \u003cstrong\u003eAquasun 300L Non-Pressurized Solar Water Heater\u003c\/strong\u003e is a high-capacity solar hot-water system designed for \u003cstrong\u003elarge households, guest houses, rural homes, staff quarters and other gravity-fed water systems\u003c\/strong\u003e.\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIt uses \u003cstrong\u003e30 evacuated borosilicate vacuum tubes\u003c\/strong\u003e and natural thermosiphon circulation to heat water without requiring a circulation pump. The system is built around a \u003cstrong\u003e300-litre insulated tank\u003c\/strong\u003e with a food-grade stainless-steel inner tank for durability and hygiene. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e☀️ Key Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e🚿 \u003cstrong\u003eTank Capacity:\u003c\/strong\u003e 300 litres\u003c\/li\u003e\n\u003cli\u003e💧 \u003cstrong\u003eSystem Type:\u003c\/strong\u003e Non-Pressurized \/ Gravity Fed\u003c\/li\u003e\n\u003cli\u003e☀️ \u003cstrong\u003eCollector Type:\u003c\/strong\u003e Evacuated Vacuum Tubes\u003c\/li\u003e\n\u003cli\u003e🔵 \u003cstrong\u003eNumber of Tubes:\u003c\/strong\u003e 30\u003c\/li\u003e\n\u003cli\u003e📏 \u003cstrong\u003eTube Size:\u003c\/strong\u003e 58mm × 1800mm\u003c\/li\u003e\n\u003cli\u003e🧪 \u003cstrong\u003eTube Material:\u003c\/strong\u003e Borosilicate glass\u003c\/li\u003e\n\u003cli\u003e🧱 \u003cstrong\u003eInner Tank:\u003c\/strong\u003e Food-grade SUS 304-2B stainless steel\u003c\/li\u003e\n\u003cli\u003e🎨 \u003cstrong\u003eOuter Tank:\u003c\/strong\u003e Galvanized steel with weather-resistant coating\u003c\/li\u003e\n\u003cli\u003e🧊 \u003cstrong\u003eInsulation:\u003c\/strong\u003e 50–60mm high-density polyurethane foam\u003c\/li\u003e\n\u003cli\u003e🔥 \u003cstrong\u003eHeat Retention:\u003c\/strong\u003e Up to 72–80 hours\u003c\/li\u003e\n\u003cli\u003e⚡ \u003cstrong\u003eOptional Backup Heater:\u003c\/strong\u003e 1.5kW–2.0kW\u003c\/li\u003e\n\u003cli\u003e🌞 Thermosiphon circulation with no electric pump required\u003c\/li\u003e\n\u003cli\u003e💧 Ideal for rooftop tanks and gravity-fed plumbing\u003c\/li\u003e\n\u003cli\u003e🌾 Suitable for rural and off-grid applications\u003c\/li\u003e\n\u003cli\u003e🧰 Includes accessories such as assistant tank, controller, heating element and magnesium rod according to the supplier. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e🔥 Thermosiphon Solar Heating\u003c\/h3\u003e\n\u003cp\u003eThe Aquasun system works through \u003cstrong\u003enatural convection\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eAs water inside the vacuum tubes heats up, it becomes lighter and rises into the storage tank. Cooler water then flows down into the tubes to be heated, creating continuous natural circulation without an electric pump. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis provides:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e☀️ Solar-powered water heating\u003c\/li\u003e\n\u003cli\u003e⚡ No circulation pump required\u003c\/li\u003e\n\u003cli\u003e💰 Reduced electricity consumption\u003c\/li\u003e\n\u003cli\u003e🔧 Fewer moving parts\u003c\/li\u003e\n\u003cli\u003e🛠️ Simpler maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e🧊 Long Heat Retention\u003c\/h3\u003e\n\u003cp\u003eThe tank uses \u003cstrong\u003e50–60mm high-density polyurethane insulation\u003c\/strong\u003e, helping hot water remain usable for up to \u003cstrong\u003e72–80 hours\u003c\/strong\u003e under suitable conditions. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis helps provide hot water:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e🌙 At night\u003c\/li\u003e\n\u003cli\u003e🌅 Early in the morning\u003c\/li\u003e\n\u003cli\u003e🌥️ After periods of reduced sunlight\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e💧 Non-Pressurized Design\u003c\/h3\u003e\n\u003cp\u003eThis model is intended for \u003cstrong\u003egravity-fed plumbing\u003c\/strong\u003e, making it particularly suitable for homes with an elevated cold-water storage tank.\u003c\/p\u003e\n\u003cp\u003eBest suited for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e🏠 Bungalows\u003c\/li\u003e\n\u003cli\u003e🌾 Rural residences\u003c\/li\u003e\n\u003cli\u003e🚿 Gravity-fed bathrooms\u003c\/li\u003e\n\u003cli\u003e🏨 Guest houses\u003c\/li\u003e\n\u003cli\u003e🏫 Staff quarters and schools\u003c\/li\u003e\n\u003cli\u003e🌱 Farms and off-grid properties\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt should not be treated as a conventional high-pressure solar heater unless the installation is specifically engineered for it. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e✅ Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLarge 300L capacity\u003c\/li\u003e\n\u003cli\u003eUses free solar energy\u003c\/li\u003e\n\u003cli\u003e30 high-efficiency vacuum tubes\u003c\/li\u003e\n\u003cli\u003eNo circulation pump required\u003c\/li\u003e\n\u003cli\u003eStainless-steel inner tank\u003c\/li\u003e\n\u003cli\u003eLong heat retention\u003c\/li\u003e\n\u003cli\u003eLow maintenance design\u003c\/li\u003e\n\u003cli\u003eSuitable for gravity-fed systems\u003c\/li\u003e\n\u003cli\u003eOptional electric backup\u003c\/li\u003e\n\u003cli\u003eGood choice for large families and small commercial use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e⚠️ Installation Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e☀️ Install where the tubes receive strong direct sunlight\u003c\/li\u003e\n\u003cli\u003e🧱 Ensure the roof can safely support the fully filled system\u003c\/li\u003e\n\u003cli\u003e💧 Use with an appropriate gravity-fed water supply\u003c\/li\u003e\n\u003cli\u003e🚫 Avoid connecting directly to unsuitable high-pressure plumbing\u003c\/li\u003e\n\u003cli\u003e🔧 Professional installation is recommended\u003c\/li\u003e\n\u003cli\u003e🧹 Keep vacuum tubes clean for good performance\u003c\/li\u003e\n\u003cli\u003e🛡️ Use the supplied safety and plumbing components correctly\u003c\/li\u003e\n\u003cli\u003e⚡ If using the electric backup element, ensure proper earthing and circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Werlar Solar Equipment \u0026 Machinery","offers":[{"title":"Default Title","offer_id":52787626737796,"sku":null,"price":84000.0,"currency_code":"KES","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1018\/2872\/2820\/files\/Non-pressurized-SOLAR-WATER-HEATER-AQUASUN-300ltrs.webp?v=1788969019","url":"https:\/\/werlar.com\/products\/aquasun-300l-non-pressurized-solar-water-heater-30-vacuum-tubes","provider":"Werlar Solar Equipment \u0026 Machinery","version":"1.0","type":"link"}