{"product_id":"haywardheatexchangerassemblyfdxlhxa1250hppfdxlhxa1250","title":"Hayward Heat Exchanger Assembly | FDXLHXA1250","description":"\u003cdiv\u003e\n\u003ch1\u003eHayward FDXLHXA1250 Heat Exchanger Assembly – Fits H250FD Universal H-Series Low NOx\u003c\/h1\u003e\n\u003cp\u003ePart # FDXLHXA1250 — a genuine Hayward heat exchanger assembly designed for use in H250FD series heaters in the Universal H-Series Low NOx lineup. This component restores proper heat transfer and performance in a pool heater when the existing exchanger has failed, leaked or become corroded.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFactory original Hayward heat exchanger assembly for H250FD Universal H-Series Low NOx pool and spa heaters.\u003c\/li\u003e\n\u003cli\u003eTray\/tube design engineered to deliver efficient heat transfer while maintaining durability in heater water loops.\u003c\/li\u003e\n\u003cli\u003eDesigned to withstand prolonged exposure to pool water, back-wash cycles and the chemical\/thermal demands of a heater application.\u003c\/li\u003e\n\u003cli\u003eFull drop-in replacement: simplifies servicing by maintaining correct plumbing connections, mounting, and performance specifications.\u003c\/li\u003e\n\u003cli\u003eHelps restore heater to manufacturer performance specifications, improving heating speed and system reliability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTypical Applications\u003c\/h2\u003e\n\u003cp\u003eThis heat exchanger assembly is used when your heater begins showing signs of heat transfer failure—such as slow heating, increased burner or pump runtimes, low outlet water temperature, visible corrosion or pinholes in the exchanger. It is ideal for service technicians or pool owners refurbishing the H250FD Universal H-Series heater to full operational condition.\u003c\/p\u003e\n\u003ch2\u003eInstallation \u0026amp; Compatibility Notes\u003c\/h2\u003e\n\u003cp\u003eBefore beginning installation, turn off power to the heater, allow it to cool, and shut off water flow. Drain the heater water side or isolate plumbing per manufacturer instructions. Remove the front cover and access the heat exchanger area — disconnect any unions or plumbing connections, remove the old exchanger assembly and install the FDXLHXA1250 in its place. Re-connect all plumbing, inspect gasket\/seals, refill the heater water side, purge air, restore power, and verify proper operation and temperature rise under load.\u003c\/p\u003e\n\u003ch2\u003eWhy Choose This Heat Exchanger?\u003c\/h2\u003e\n\u003cp\u003eChoosing the Hayward FDXLHXA1250 ensures you get a compatible OEM part that matches the original heater design, maintains performance, and reduces the risk of premature failure. Using a correct replacement helps avoid mismatch issues, ensures warranty alignment, and supports optimal heater life and efficiency.\u003c\/p\u003e\n\u003ch2\u003eMaintenance Tips\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eInspect the exchanger annually for signs of corrosion, leaks, or scaling on the water-side tubes.\u003c\/li\u003e\n\u003cli\u003eEnsure proper water chemistry and filter cleanliness to reduce sediment or scale buildup in the exchanger, which can degrade performance.\u003c\/li\u003e\n\u003cli\u003eAfter installation, monitor the heater’s temperature rise and runtime to confirm the exchanger is performing correctly.\u003c\/li\u003e\n\u003cli\u003eDuring off-season or long idle periods, protect the heater from freeze and confirm no residual water remains in the exchanger to prevent damage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":46797801029807,"sku":"FDXLHXA1250","price":1099.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6415\/2239\/files\/hayward-heat-exchanger-assembly-fdxlhxa1250-heater-parts-9262357.jpg?v=1777067524","url":"https:\/\/freshized.com\/products\/haywardheatexchangerassemblyfdxlhxa1250hppfdxlhxa1250","provider":"Freshized","version":"1.0","type":"link"}