{"product_id":"haywardhseriesnaturalgasheater135kbtu120240v60hzsinglephasew3h135fdnhppw3h135fdn","title":"Hayward H-Series Natural Gas Heater, 135K BTU, 120\/240 V, 60 Hz, Single Phase | W3H135FDN","description":"\u003ch2\u003e\u003cspan\u003eProduct Overview\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eHayward H-Series Natural Gas Heater W3H135FDN\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e is a 135,000 BTU pool heater designed to provide dependable, on-demand heating for above-ground pools and compatible residential pool or spa applications. Built with Hayward’s trusted heater technology, this unit delivers fast heat-up performance, efficient operation, and user-friendly controls for comfortable swimming conditions.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003ePowered by \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003enatural gas\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, the W3H135FDN is ideal for pool owners who want reliable heating performance without relying only on solar heat or seasonal weather. Its 120\/240 V, 60 Hz, single-phase electrical compatibility makes it suitable for many standard residential equipment installations.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eFast, Reliable Heating Performance\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe Hayward H-Series 135K BTU heater is designed to help bring pool water to a comfortable temperature and maintain that temperature more consistently. Whether used to extend the swim season, warm cooler water, or support spa-style comfort in compatible setups, this heater provides dependable performance for everyday pool enjoyment.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eIts 135,000 BTU output makes it a practical heating option for smaller pools, above-ground pools, and lighter residential heating loads.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eBuilt for Durability and Easy Operation\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe W3H135FDN features durable heater construction designed for outdoor pool equipment environments. Its cupro nickel heat exchanger helps provide added resistance against corrosion and damage caused by challenging water chemistry conditions.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eAn intuitive electronic control panel makes temperature adjustment simple, allowing pool owners to manage heating operation with ease.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eKey Features\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\u003cspan\u003eGenuine Hayward H-Series natural gas heater\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e135,000 BTU heating capacity\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNatural gas fuel configuration\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e120\/240 V electrical compatibility\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e60 Hz, single-phase operation\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDesigned for above-ground pools and compatible residential applications\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCupro nickel heat exchanger for enhanced corrosion resistance\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eLow NOx emissions design\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eElectronic ignition for easy startup\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eUser-friendly electronic control panel\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFast speed-to-heat performance\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHydraulic design helps support efficient water flow\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBuilt for outdoor pool equipment pad installation\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSuitable for pool heating and compatible spa applications when properly sized\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDesigned for dependable residential heating performance\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eProduct Benefits\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cspan\u003eMore Comfortable Swim Time\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe 135K BTU output helps warm pool water so customers can enjoy more comfortable swimming conditions during cooler days, evenings, and shoulder-season months.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eReliable Natural Gas Heating\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eNatural gas provides strong, consistent heating performance, making this heater a practical option for pool owners who want dependable on-demand heat.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eCorrosion-Resistant Heat Exchanger\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe cupro nickel heat exchanger helps protect against corrosion and premature failure caused by unbalanced water chemistry, supporting longer equipment life.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eEasy Temperature Control\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe electronic control panel allows simple temperature adjustment and straightforward heater operation.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eEfficient Water Flow Design\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe heater’s hydraulic design helps move water efficiently through the unit, supporting dependable heating performance and system operation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eIdeal For\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis heater is ideal for:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\u003cspan\u003eAbove-ground pools\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSmaller residential pool applications\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCompatible pool and spa heating setups\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHomes using natural gas as a fuel source\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eReplacing an older 135K BTU gas heater\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePool owners wanting faster heat-up than solar alone\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eInstallations requiring 120\/240 V, 60 Hz, single-phase compatibility\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCustomers looking for a dependable Hayward gas heater\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eCompatibility\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe Hayward W3H135FDN is designed for natural gas installations and above-ground pool heating applications. It may also be suitable for compatible residential pool or spa systems when properly sized and installed by a qualified professional.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eBefore ordering, confirm:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\u003cspan\u003eFuel type: Natural gas\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHeating capacity: 135,000 BTU\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eElectrical requirements: 120\/240 V, 60 Hz, single phase\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePool size and desired heat-up time\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eGas line sizing and installation requirements\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePlumbing flow rate requirements\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eLocal building, gas, and electrical codes\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eProfessional installation requirements\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis heater should not be used with incompatible soft-sided pools or systems that cannot meet the required flow and installation specifications.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eWhat’s Included\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\u003cspan\u003eOne Hayward H-Series Natural Gas Heater, 135K BTU\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eElectronic control system\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCupro nickel heat exchanger\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFactory-installed heater components\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eManufacturer documentation, where supplied by packaging\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eGas line components, venting materials, electrical whip, plumbing fittings, equipment pad materials, and installation labor are not included unless specified separately.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eSpecifications\u003c\/span\u003e\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cspan\u003eSpecification\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan\u003eDetails\u003c\/span\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eBrand\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eHayward\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eProduct Line\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eH-Series\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eModel\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eW3H135FDN\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eSKU\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eHPPW3H135FDN-H\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eManufacturer Part Number\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eW3H135FDN\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eUPC \/ Barcode\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0610377407113\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eProduct Type\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eGas pool heater\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eFuel Type\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eNatural Gas\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eHeating Capacity\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e135,000 BTU\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eVoltage\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e120\/240 V\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eFrequency\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e60 Hz\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003ePhase\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSingle Phase\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eIgnition Type\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eElectronic ignition\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eHeat Exchanger\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eCupro nickel\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eEmissions\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eLow NOx\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eApplication\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAbove-ground pools and compatible residential pool\/spa systems\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eControls\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eElectronic control panel\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eInstallation Type\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eOutdoor pool equipment installation\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eProfessional Installation Recommended\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eYes\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eWarranty\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eConfirm warranty terms at time of purchase\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eCustomer-Facing Q\u0026amp;A\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eQ: What type of fuel does the Hayward W3H135FDN use?\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eA: The W3H135FDN uses \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003enatural gas\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eQ: How many BTUs is this heater?\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eA: This heater is rated at \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e135,000 BTU\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eQ: What voltage does this heater require?\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eA: The W3H135FDN is designed for \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e120\/240 V\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, 60 Hz, single-phase electrical operation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eQ: Is this heater for above-ground or in-ground pools?\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eA: This model is commonly used for \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eabove-ground pool\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e heating applications. Always confirm sizing and installation compatibility before purchase.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eQ: Does this heater have a cupro nickel heat exchanger?\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eA: Yes. The W3H135FDN features a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003ecupro nickel heat exchanger\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e for enhanced corrosion resistance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eQ: Is this a propane heater?\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eA: No. This model is configured for \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003enatural gas\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. Do not use it with propane unless the heater model specifically supports propane.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eQ: Does this heater require professional installation?\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eA: Yes. Gas heaters should be installed by qualified professionals according to local gas, electrical, plumbing, and building codes.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eQ: What is the barcode for this product?\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eA: The UPC \/ Barcode is \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e0610377407113\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":52762965999926,"sku":"HPPW3H135FDN -H","price":2399.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0873\/1167\/9798\/files\/HPPW3H135FDN_0_df04eb42-3460-417a-bab1-e6e50ddfb100.jpg?v=1755537308","url":"https:\/\/poolsupplydepot.net\/products\/haywardhseriesnaturalgasheater135kbtu120240v60hzsinglephasew3h135fdnhppw3h135fdn","provider":"Pool Supply Depot","version":"1.0","type":"link"}