{"product_id":"hayward-h-series-400k-btu-propane-gas-pool-spa-heater","title":"Hayward H-Series 400K BTU Propane Gas Pool \u0026 Spa Heater","description":"\u003cp\u003eExperience powerful, energy-efficient pool and spa heating with the Hayward Universal H-Series H400FDP Propane Gas Heater — a premium high-performance heating solution designed for residential in-ground pools and spas.\u003c\/p\u003e\n\u003cp\u003eEngineered for fast heating performance, long-term durability, and flexible installation, the H-Series 400K heater delivers reliable comfort while helping reduce operating costs through industry-leading thermal efficiency.\u003c\/p\u003e\n\u003cp\u003eBuilt with a durable cupro-nickel heat exchanger for superior corrosion resistance, this heater is ideal for saltwater and chemically treated pools, making it an excellent choice for modern smart-pool systems and luxury backyard environments.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFEATURES:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e• Powerful 400,000 BTU heating performance\u003cbr\u003e• Designed for residential in-ground pools and spas\u003cbr\u003e• High-efficiency propane gas heating\u003cbr\u003e• Durable cupro-nickel heat exchanger\u003cbr\u003e• Excellent corrosion resistance for saltwater pools\u003cbr\u003e• Low NOx emissions certified\u003cbr\u003e• Digital LED control panel\u003cbr\u003e• Universal installation design\u003cbr\u003e• Reliable all-season heating performance\u003cbr\u003e• Built for long-term outdoor durability\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBENEFITS:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e• Fast pool and spa heat-up times\u003cbr\u003e• Energy-efficient operation\u003cbr\u003e• Extended swimming season\u003cbr\u003e• Saltwater-compatible durability\u003cbr\u003e• Reduced operating costs\u003cbr\u003e• Reliable Hayward heating performance\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSPECIFICATIONS:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e• Model: H400FDP\u003cbr\u003e• Fuel Type: Propane Gas\u003cbr\u003e• BTU Rating: 400,000\u003cbr\u003e• Thermal Efficiency: 83–84%\u003cbr\u003e• Heat Exchanger: Cupro-Nickel\u003cbr\u003e• Low NOx Emissions Certified\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIDEAL FOR:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e• Luxury backyard pool systems\u003cbr\u003e• Saltwater pool environments\u003cbr\u003e• Residential in-ground pools\u003cbr\u003e• Spa heating applications\u003cbr\u003e• Smart-pool automation systems\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWHAT'S INCLUDED:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e• Hayward Universal H-Series 400K Propane Heater\u003cbr\u003e• Manufacturer documentation\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWHY CUSTOMERS LOVE IT:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e• Rapid heating performance\u003cbr\u003e• Durable corrosion-resistant construction\u003cbr\u003e• Energy-efficient operation\u003cbr\u003e• Saltwater pool compatibility\u003cbr\u003e• Reliable Hayward engineering\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProfessional installation is strongly recommended.\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003ePlease verify gas supply compatibility and local code requirements before purchase.\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":52223983354139,"sku":null,"price":6999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1010\/8049\/8459\/files\/heater4.avif?v=1777770683","url":"https:\/\/lawnbotsystems.com\/products\/hayward-h-series-400k-btu-propane-gas-pool-spa-heater","provider":"LawnBotSystems","version":"1.0","type":"link"}