{"product_id":"ferroli-optimax-boiler-auto-air-vent-39818221","title":"Ferroli Optimax Boiler Auto Air Vent 39818220","description":"\u003ch1\u003e\u003cspan\u003eFerroli Optimax Boiler Auto Air Vent 39818220\u003c\/span\u003e\u003c\/h1\u003e\n\u003ch2\u003e\u003cspan\u003eProduct Overview\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eFerroli Optimax Boiler Auto Air Vent 39818220\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e is a replacement hydraulic component designed for use within selected Ferroli heating systems.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe automatic air vent (AAV) is an important part of the boiler's hydraulic circuit. It automatically releases trapped air from the heating system, helping to maintain efficient water circulation, reduce system noise, and prevent airlocks that can affect boiler performance. A correctly functioning AAV supports reliable operation and helps protect the heating system from issues caused by trapped air.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eℹ️ \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eProduct Condition Options:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis part may be available in \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eNew or Refurbished\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e condition. Please check the available options from the dropdown menu.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eTechnical Insight \u0026amp; Common Failure Symptoms\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eDuring normal operation, small amounts of air can accumulate within the boiler's hydraulic system. The automatic air vent is designed to release this trapped air automatically, helping maintain correct water flow and system efficiency. Over time, the air vent may become blocked, leak, or fail due to wear, debris, or internal seal deterioration.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eTypical symptoms linked to a faulty automatic air vent include:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eWater leaking from the air vent\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAir trapped within the heating system\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eGurgling or bubbling noises from the boiler or radiators\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePoor circulation or reduced heating performance\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFrequent need to bleed radiators\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHeating system operating inefficiently due to trapped air\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eReplacing a faulty automatic air vent may help restore correct circulation, improve system efficiency, and reduce air-related heating issues.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eCompatibility\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eManufacturer Part Number (MPN): 39818220\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis part is designed for selected models within the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eFerroli Optimax\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e range and other compatible Ferroli boilers.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003ePlease strictly verify the manufacturer part number \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e39818220\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e against your boiler's technical manual, exploded parts diagram, or existing component before ordering to guarantee correct fitment.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eSafety Advice\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003eBoiler hydraulic components involve water pressure and internal heating system assemblies. Installation and servicing must be carried out by a Gas Safe registered engineer in accordance with current regulations and manufacturer instructions.\u003c\/em\u003e\u003c\/p\u003e","brand":"National Boiler Spares","offers":[{"title":"Default Title","offer_id":44368341008487,"sku":"N8162","price":21.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0615\/0923\/8887\/files\/4_8dca99c1-0581-4ed7-b3c7-9cb384a068d3.png?v=1786024674","url":"https:\/\/nationalboilerspares.co.uk\/products\/ferroli-optimax-boiler-auto-air-vent-39818221","provider":"National Boiler Spares","version":"1.0","type":"link"}