{"product_id":"hayward-h-series-pool-heater-ng-400k-btu","title":"Hayward H-Series Pool Heater, NG - 400K BTU","description":"\u003cp\u003eThe Hayward H-Series Pool Heater, NG - 400K BTU W3H400FDN offers outstanding heating performance, ensuring reliable and long-lasting comfort. This heater features a cupro-nickel heat exchanger that provides excellent protection against corrosion and premature failure. The industry-leading hydraulic design minimizes circulation pump run time which leads to significant energy savings.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDetails:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHayward P\/N: \u003cspan\u003eW3H400FDN\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eBTU: 400,000\u003c\/li\u003e\n\u003cli\u003eThermal Efficiency: 83-84%\u003c\/li\u003e\n\u003cli\u003eNatural Gas\u003c\/li\u003e\n\u003cli\u003eGas Connection: 3\/4\"\u003c\/li\u003e\n\u003cli\u003eHeat Exchanger: Cupro Nickel\u003c\/li\u003e\n\u003cli\u003eWater Flo max: 125 GPM\u003c\/li\u003e\n\u003cli\u003eWater Flo min: 30 GPM\u003c\/li\u003e\n\u003cli\u003e2\" x 2-1\/2\" CPVC plumbing connections\u003c\/li\u003e\n\u003cli\u003eVenting kit not included, sold separately, required for indoor installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis pool heater is not compatible with any soft-sided pools (Intex, Coleman, Bestway etc.) due to insufficient flow rate. Installing this unit on a soft-sided pool voids product warranty.\u003c\/p\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":44013097517125,"sku":"W3H400FDN","price":5219.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/1134\/2405\/files\/W3H400FDN__28309.1745350863.600.600.png?v=1763601044","url":"https:\/\/poolandhottubdepot.com\/products\/hayward-h-series-pool-heater-ng-400k-btu","provider":"Pool \u0026 Hot Tub Depot","version":"1.0","type":"link"}