{"product_id":"hayward-hs250fdn-universal-h-series-natural-gas-heater-with-omnix-250k-btu","title":"Hayward | HS250FDN | Universal H-Series Natural Gas Heater with OmniX | 250K BTU","description":"\u003cp data-start=\"174\" data-end=\"646\"\u003eHayward HS250FDN is a Universal H-Series natural gas pool and spa heater with OmniX designed for dependable heating performance, smart connectivity, and easier replacement in compatible pool and spa systems. This model is rated at 250,000 BTU\/hr and combines Hayward’s Universal Display with OmniX embedded intelligence for enhanced programmability, advanced diagnostics, and remote connectivity.\u003c\/p\u003e\n\u003cp data-start=\"648\" data-end=\"688\"\u003e────────────────────────────────────────\u003c\/p\u003e\n\u003cp data-start=\"690\" data-end=\"702\"\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"704\" data-end=\"1937\"\u003e• Hayward HS250FDN is a Universal H-Series natural gas heater with OmniX rated at 250,000 BTU\/hr. \u003cbr data-start=\"839\" data-end=\"842\"\u003e• The OmniX platform adds enhanced programmability, advanced diagnostics, and seamless remote connectivity. \u003cbr data-start=\"987\" data-end=\"990\"\u003e• Hayward’s Universal Display is designed to provide a consistent and intuitive control experience across Omni, OmniX, and competitive automation systems. \u003cbr data-start=\"1182\" data-end=\"1185\"\u003e• The heater uses a cupro-nickel heat exchanger for strong protection against corrosion and premature failure caused by unbalanced water chemistry.\u003cbr data-start=\"1332\" data-end=\"1336\"\u003e• Totally managed water flow is designed to deliver strong hydraulic performance with fast speed-to-heat capability. \u003cbr data-start=\"1490\" data-end=\"1493\"\u003e• The universal junction box supports either left or right electrical installation for more flexible field setup. \u003cbr data-start=\"1644\" data-end=\"1647\"\u003e• Front-panel-only access is designed to simplify service and maintenance without requiring front-and-back panel access. \u003cbr data-start=\"1805\" data-end=\"1808\"\u003e• The heater supports OmniX app control and can also communicate with Hayward Omni automation through a 3-wire smart connection.\u003c\/p\u003e\n\u003cp data-start=\"1939\" data-end=\"1979\"\u003e────────────────────────────────────────\u003c\/p\u003e\n\u003cp data-start=\"1981\" data-end=\"1997\"\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1999\" data-end=\"2632\"\u003eThe Hayward HS250FDN Universal H-Series Natural Gas Heater with OmniX is built for pool owners and service professionals who want efficient 250K BTU heating performance with a more modern control platform. As part of the updated H-Series OmniX lineup, this model combines Hayward’s proven Universal H-Series heater design with a newer display and control approach that improves usability, diagnostics, and connected control options. It is especially well suited for pool and spa installations where dependable heating, easier retrofit potential, and smarter operation are important priorities.\u003c\/p\u003e\n\u003cp data-start=\"2634\" data-end=\"3199\"\u003eWhat makes this model especially appealing is the combination of heater performance and control flexibility. The dealer announcement highlights drop-in replacement compatibility, cupro-nickel durability, front-panel service access, and embedded OmniX intelligence, while the owner’s manual shows support for standalone control, OmniX app control, traditional remote control, and Hayward Omni automation integration. For buyers looking for a premium 250,000 BTU natural gas heater with smart control capability, the HS250FDN is a strong and current H-Series option.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp data-start=\"0\" data-end=\"40\"\u003e────────────────────────────────────────\u003c\/p\u003e\n\u003ch2 data-section-id=\"w1c0q0\" data-start=\"42\" data-end=\"77\"\u003eFrequently Asked Questions (FAQ)\u003c\/h2\u003e\n\u003cp data-start=\"79\" data-end=\"318\"\u003e\u003cstrong data-start=\"79\" data-end=\"150\"\u003eQ: What is the Hayward HS250FDN Universal H-Series heater used for?\u003c\/strong\u003e\u003cbr data-start=\"150\" data-end=\"153\"\u003eA: The Hayward HS250FDN is a 250,000 BTU natural gas pool and spa heater designed for residential applications that need reliable heating and smart control features.\u003c\/p\u003e\n\u003chr data-start=\"320\" data-end=\"323\"\u003e\n\u003cp data-start=\"325\" data-end=\"542\"\u003e\u003cstrong data-start=\"325\" data-end=\"380\"\u003eQ: What size pool is the Hayward HS250FDN best for?\u003c\/strong\u003e\u003cbr data-start=\"380\" data-end=\"383\"\u003eA: This 250K BTU heater is best for small to medium-sized pools, spas, and pool\/spa combinations that require efficient heating and steady temperature control.\u003c\/p\u003e\n\u003chr data-start=\"544\" data-end=\"547\"\u003e\n\u003cp data-start=\"549\" data-end=\"734\"\u003e\u003cstrong data-start=\"549\" data-end=\"589\"\u003eQ: Is the Hayward HS250FDN worth it?\u003c\/strong\u003e\u003cbr data-start=\"589\" data-end=\"592\"\u003eA: Yes. It is a strong option for homeowners who want dependable heating performance combined with modern OmniX smart control and diagnostics.\u003c\/p\u003e\n\u003chr data-start=\"736\" data-end=\"739\"\u003e\n\u003cp data-start=\"741\" data-end=\"968\"\u003e\u003cstrong data-start=\"741\" data-end=\"786\"\u003eQ: What is OmniX on the Hayward HS250FDN?\u003c\/strong\u003e\u003cbr data-start=\"786\" data-end=\"789\"\u003eA: OmniX is Hayward’s embedded smart control system that provides advanced programming, diagnostics, and remote connectivity through compatible mobile apps and automation systems.\u003c\/p\u003e\n\u003chr data-start=\"970\" data-end=\"973\"\u003e\n\u003cp data-start=\"975\" data-end=\"1170\"\u003e\u003cstrong data-start=\"975\" data-end=\"1031\"\u003eQ: Can I control the Hayward HS250FDN from my phone?\u003c\/strong\u003e\u003cbr data-start=\"1031\" data-end=\"1034\"\u003eA: Yes. The OmniX platform allows remote monitoring, scheduling, and temperature adjustments through Hayward’s connected control system.\u003c\/p\u003e\n\u003chr data-start=\"1172\" data-end=\"1175\"\u003e\n\u003cp data-start=\"1177\" data-end=\"1393\"\u003e\u003cstrong data-start=\"1177\" data-end=\"1237\"\u003eQ: Is the Hayward HS250FDN suitable for saltwater pools?\u003c\/strong\u003e\u003cbr data-start=\"1237\" data-end=\"1240\"\u003eA: Yes. The cupro-nickel heat exchanger offers strong resistance to corrosion, making it suitable for saltwater and chemically treated pool environments.\u003c\/p\u003e\n\u003chr data-start=\"1395\" data-end=\"1398\"\u003e\n\u003cp data-start=\"1400\" data-end=\"1637\"\u003e\u003cstrong data-start=\"1400\" data-end=\"1464\"\u003eQ: Can the Hayward HS250FDN replace my existing pool heater?\u003c\/strong\u003e\u003cbr data-start=\"1464\" data-end=\"1467\"\u003eA: Yes. It is designed for easier replacement in compatible systems, but installation compatibility depends on gas supply, plumbing layout, electrical setup, and venting.\u003c\/p\u003e\n\u003chr data-start=\"1639\" data-end=\"1642\"\u003e\n\u003cp data-start=\"1644\" data-end=\"1856\"\u003e\u003cstrong data-start=\"1644\" data-end=\"1711\"\u003eQ: Does the Hayward HS250FDN require professional installation?\u003c\/strong\u003e\u003cbr data-start=\"1711\" data-end=\"1714\"\u003eA: Yes. Professional installation is recommended due to natural gas connections, electrical wiring, plumbing integration, and code compliance.\u003c\/p\u003e\n\u003chr data-start=\"1858\" data-end=\"1861\"\u003e\n\u003cp data-start=\"1863\" data-end=\"2027\"\u003e\u003cstrong data-start=\"1863\" data-end=\"1912\"\u003eQ: Is the Hayward HS250FDN Low NOx compliant?\u003c\/strong\u003e\u003cbr data-start=\"1912\" data-end=\"1915\"\u003eA: Yes. This heater meets Low NOx emission standards, making it suitable for regulated areas such as California.\u003c\/p\u003e\n\u003chr data-start=\"2029\" data-end=\"2032\"\u003e\n\u003cp data-start=\"2034\" data-end=\"2242\"\u003e\u003cstrong data-start=\"2034\" data-end=\"2091\"\u003eQ: What makes the Hayward HS250FDN easier to service?\u003c\/strong\u003e\u003cbr data-start=\"2091\" data-end=\"2094\"\u003eA: The front-panel-only access design allows technicians to service internal components without removing multiple panels, reducing maintenance time.\u003c\/p\u003e\n\u003chr data-start=\"2244\" data-end=\"2247\"\u003e\n\u003cp data-start=\"2249\" data-end=\"2492\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\u003cstrong data-start=\"2249\" data-end=\"2325\"\u003eQ: When should I choose the Hayward HS250FDN instead of a larger heater?\u003c\/strong\u003e\u003cbr data-start=\"2325\" data-end=\"2328\"\u003eA: Choose the HS250FDN if you have a smaller or medium-sized pool and want efficient heating without oversizing, while still benefiting from smart control features.\u003c\/p\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":52258227585336,"sku":"HS250FDN","price":3200.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0808\/6319\/9544\/files\/Universal_H_Series_H400FD_Hero_Open_Lid_4d9b.png?v=1777769473","url":"https:\/\/appaetechpoolsupply.com\/products\/hayward-hs250fdn-universal-h-series-natural-gas-heater-with-omnix-250k-btu","provider":"AppaeTech Pool Supply","version":"1.0","type":"link"}