{"product_id":"haywardheatexchangerassemblyfdxlhxa1300hppfdxlhxa1300","title":"Hayward Heat Exchanger Assembly | FDXLHXA1300","description":"\u003ch2\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe Hayward FDXLHXA1300 Heat Exchanger Assembly is the genuine OEM replacement heat exchanger for the Hayward Universal H-Series H300FD Low NOx pool and spa heater. Rated for the 300,000 BTU\/hr platform, it transfers heat from the combustion chamber into the circulating pool or spa water. It is the part to order when a qualified technician has confirmed that the original exchanger is leaking, scaled, corroded, or freeze-damaged and the rest of the heater remains fit for service, letting you restore heating without replacing the complete heater.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eIdeal For\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eH300FD owners whose heat exchanger has failed while the burner, gas valve, and controls remain serviceable.\u003c\/p\u003e\n\u003cp\u003ePool and spa service professionals completing a confirmed heat exchanger repair on an H300FDN or H300FDP heater.\u003c\/p\u003e\n\u003cp\u003eCustomers who want a factory part matched to the 300K H-Series platform rather than replacing the complete heater.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eGenuine Hayward OEM replacement heat exchanger assembly.\u003c\/p\u003e\n\u003cp\u003eDesignated by Hayward for the H300FD 300,000 BTU\/hr heater size.\u003c\/p\u003e\n\u003cp\u003eCupro-nickel exchanger construction used across the Universal H-Series.\u003c\/p\u003e\n\u003cp\u003ePlastic header configuration matching the H300FD platform.\u003c\/p\u003e\n\u003cp\u003eUsed in both natural gas (H300FDN) and propane (H300FDP) models.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eRestore heat transfer without the cost of a complete new heater.\u003c\/p\u003e\n\u003cp\u003eGet factory-designed fit for the H300FD cabinet and connections.\u003c\/p\u003e\n\u003cp\u003eResist corrosion in demanding pool and spa water conditions.\u003c\/p\u003e\n\u003cp\u003eReturn the heater to service with the same assembly Hayward specifies.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eHayward\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct type\u003c\/td\u003e\n\u003ctd\u003eHeat exchanger assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eUniversal H-Series Low NOx\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer part number\u003c\/td\u003e\n\u003ctd\u003eFDXLHXA1300\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eFDXLHXA1300\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUPC \/ GTIN\u003c\/td\u003e\n\u003ctd\u003e610377104579\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible heater\u003c\/td\u003e\n\u003ctd\u003eH300FD (H300FDN natural gas \/ H300FDP propane)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeater input rating\u003c\/td\u003e\n\u003ctd\u003e300,000 BTU\/hr\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExchanger material\u003c\/td\u003e\n\u003ctd\u003eCupro-nickel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeader configuration\u003c\/td\u003e\n\u003ctd\u003ePlastic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003ePool and spa heaters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping dimensions\u003c\/td\u003e\n\u003ctd\u003e38.5 × 8.5 × 18.5 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping weight\u003c\/td\u003e\n\u003ctd\u003e40.5 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e1 year, subject to Hayward's replacement-part terms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003e\u003cstrong\u003eWhat's Included\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eOne Hayward FDXLHXA1300 heat exchanger assembly. The complete heater, burner assembly, gas valve, and electronic control system are not included.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWarranty \u0026amp; Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cstrong\u003eImportant Purchase Notice\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThis is a major heater-repair component. Hayward requires installation by a qualified pool heater professional, and proof of professional installation may be needed to keep manufacturer warranty coverage. Confirm your complete heater model and serial number, the existing exchanger part number, and the applicable warranty terms before ordering.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe FDXLHXA1300 is designed for the Hayward Universal H-Series H300FD heater, including H300FDN (natural gas) and H300FDP (propane) configurations. Match the complete model and serial number on the heater data plate against Hayward's parts diagram before ordering.\u003c\/p\u003e\n\u003cp\u003eHayward uses a different heat exchanger assembly for each heater size. FDXLHXA1150 fits the H150FD, FDXLHXA1200 the H200FD, FDXLHXA1250 the H250FD, FDXLHXA1350 the H350FD, FDXLHXA1400 the H400FD, and FDXLHXA1500 the H500FD. Do not select a heat exchanger based on physical appearance alone.\u003c\/p\u003e\n\u003cp\u003eOlder Millivolt, ED1, and ED2 heaters, and ASME-configured commercial heaters, use different assemblies. Verify the heater data plate when an ASME configuration may apply.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eInstallation and Upgrade Context\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eReplacing a pool heater heat exchanger requires substantial disassembly and should be completed by a qualified pool heater professional following Hayward's service instructions. Before service, disconnect electrical power, shut off the gas supply and circulation pump, let the heater cool completely, relieve system pressure, and drain the exchanger.\u003c\/p\u003e\n\u003cp\u003eDuring replacement, inspect the inlet\/outlet header, bypass components, O-rings, temperature sensors, water-pressure switch connections, and the combustion area. Identify what caused the original failure before returning the heater to service. Improper pH, low alkalinity, excessive sanitizer, scale, poor circulation, improper bypass operation, and freeze exposure are common causes, and correcting them helps protect the replacement exchanger.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eCustomer-Facing Q\u0026amp;A\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Which heater does the FDXLHXA1300 fit?\u003c\/strong\u003e\u003cbr\u003eA: The Hayward Universal H-Series H300FD 300,000 BTU\/hr Low NOx pool and spa heater.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does it fit both natural gas and propane models?\u003c\/strong\u003e\u003cbr\u003eA: Yes. The same assembly is used in H300FDN natural gas and H300FDP propane configurations.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will it fit an H250FD or H350FD?\u003c\/strong\u003e\u003cbr\u003eA: No. The H250FD uses FDXLHXA1250, and the H350FD uses FDXLHXA1350.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this include the burner or control board?\u003c\/strong\u003e\u003cbr\u003eA: No. It includes only the heat exchanger assembly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I install it myself?\u003c\/strong\u003e\u003cbr\u003eA: Hayward requires installation by a qualified professional, and professional installation may be needed to keep warranty coverage.\u003c\/p\u003e\n\u003csection id=\"psd-manuals-sell-sheets\"\u003e\n\u003ch2\u003eManuals \u0026amp; Sell Sheets\u003c\/h2\u003e\n\u003cp\u003eManufacturer equipment references for an OEM part listed in the factory parts chart. Confirm your equipment model and production revision before use.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/hayward.com\/media\/akeneo_connector\/asset_files\/U\/H\/UHS_Service_Installation_011717_RevT_6fd9.pdf\" rel=\"noopener\" target=\"_blank\"\u003eManual: Universal H-Series FD — legacy controls — Installation and operation manual\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":52762699006262,"sku":"HPPFDXLHXA1300 -H","price":1399.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0873\/1167\/9798\/files\/hayward-heat-exchanger-assembly-fdxlhxa1300-9573215.jpg?v=1793916008","url":"https:\/\/poolsupplydepot.net\/products\/haywardheatexchangerassemblyfdxlhxa1300hppfdxlhxa1300","provider":"Pool Supply Depot","version":"1.0","type":"link"}