{"product_id":"hayward-fdxlbpk1930-bypass-cartridge-kit-for-universal-h-series-low-nox-heaters-direct-fit-for-h150-h400-restores-flow","title":"Hayward FDXLBPK1930 Bypass Cartridge Kit for Universal H-Series Low NOx Heaters — Direct-Fit for H150–H400, Restores Flow","description":"\u003cp\u003e\u003cstrong\u003eHayward FDXLBPK1930 is a replacement bypass cartridge kit engineered to restore proper flow and reliable operation in Hayward Universal H-Series Low NOx pool heaters.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis cartridge replacement kit is made specifically for the Hayward Universal H-Series Low NOx heater family and provides the compatible parts needed to replace a worn or damaged bypass cartridge. It’s intended as a direct-fit service component for multiple H-Series models so technicians and pool owners can quickly return the heater to safe, efficient operation without searching for generic or mismatched parts.\u003c\/p\u003e\n\n\u003ch3\u003eWhich heater models is this bypass cartridge compatible with?\u003c\/h3\u003e\n\n\u003cp\u003eThe FDXLBPK1930 kit is matched to the Low NOx Universal H-Series heater lineup. It fits both the N and P variants across the H150 through H400 ranges, covering small to large-capacity units. Using the correct model-specific kit avoids installation issues and maintains manufacturer-recommended clearances.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eCompatible with H150FDN and H150FDP models\u003c\/li\u003e\n  \u003cli\u003eFits H200FDN and H200FDP heaters\u003c\/li\u003e\n  \u003cli\u003eAlso fits H250FDN, H250FDP, H300FDN, H300FDP, H350FDN, H350FDP, H400FDN, H400FDP\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does replacing the bypass cartridge help my heater?\u003c\/h3\u003e\n\n\u003cp\u003eReplacing a worn bypass cartridge restores correct water bypass and flow control inside the heater, which supports stable combustion and heating performance. A fresh cartridge minimizes leaks and pressure irregularities that can trigger error codes or shutdowns. It’s a preventive service step that reduces the chance of more extensive repairs later.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eRe-establishes proper internal flow paths to prevent overheating\u003c\/li\u003e\n  \u003cli\u003eReduces likelihood of water leaks at bypass connections\u003c\/li\u003e\n  \u003cli\u003eHelps maintain expected heater response and efficiency\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat should I know about installation and service?\u003c\/h3\u003e\n\n\u003cp\u003eInstallation is typically performed by a qualified pool technician or a homeowner comfortable with heater service—follow the heater’s service manual and shut off power and gas before starting. The kit is designed as a direct replacement part, so standard tools and routine disassembly of the bypass assembly are usually sufficient. If you encounter stuck fittings or corrosion, allow a professional to handle removal to avoid damage.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eTurn off electrical and gas supplies before work\u003c\/li\u003e\n  \u003cli\u003eUse manufacturer instructions for torque and sealing requirements\u003c\/li\u003e\n  \u003cli\u003eIf corrosion or heavy scaling is present, consult a certified technician\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the physical details and shipping considerations?\u003c\/h3\u003e\n\n\u003cp\u003eThe kit is compact and lightweight at approximately 2.7 pounds, making it easy to store and ship. Because it’s a genuine-fit part, ordering the FDXLBPK1930 avoids compatibility guesswork compared with generic cartridges. Keep the replacement on hand as part of routine maintenance supplies to minimize downtime during peak pool season.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eWeight: about 2.7 pounds for easy handling and storage\u003c\/li\u003e\n  \u003cli\u003eShipped as a full replacement kit with necessary cartridge components\u003c\/li\u003e\n  \u003cli\u003eDirect-fit design reduces installation time compared with non-OEM parts\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: Pool professionals, service technicians, and hands-on pool owners who maintain Hayward Universal H-Series Low NOx heaters and need a reliable, manufacturer-compatible bypass cartridge replacement. Choose this kit when you want a direct-fit, OEM-aligned part that simplifies repairs and keeps your heater operating within its engineered specifications.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this cartridge a direct replacement for my H300FDP heater?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The FDXLBPK1930 kit is compatible with H300FDP and other H-Series Low NOx models listed by Hayward.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I install this bypass cartridge myself?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: If you have basic heater service experience, yes—but always shut off power and gas first and follow the Hayward service manual.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":56834668953940,"sku":"B004VTG18Q","price":83.43,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/hayward-fdxlbpk1930-cartridge-front-view.jpg?v=1787052621","url":"https:\/\/gardenluxe.co.uk\/products\/hayward-fdxlbpk1930-bypass-cartridge-kit-for-universal-h-series-low-nox-heaters-direct-fit-for-h150-h400-restores-flow","provider":"Gardenluxe Uk","version":"1.0","type":"link"}