{"product_id":"hayward-universal-h-series-low-nox-250000-btu-natural-gas-swimming-pool-heater","title":"Hayward Universal H Series Low NOx 250,000 BTU Natural Gas Swimming Pool Heater","description":"\u003cp\u003e## Hayward Universal H-Series 250,000 BTU Natural Gas Pool Heater\u003c\/p\u003e\n\u003cp\u003eThe Hayward Universal H-Series 250K BTU Natural Gas Heater delivers an uncompromised balance of high-velocity thermal output and eco-conscious engineering. Purpose-built for mid-sized inground pools and standalone residential spa setups, this premium heating system boasts an industry-leading **83% to 84% thermal efficiency rating**. It fully complies with the most stringent low-NOx air quality emission standards (including California and Texas guidelines), making it an ideal upgrade for the environmentally minded property owner.\u003c\/p\u003e\n\u003cp\u003eEngineered with advanced hydraulic geometry, this unit significantly optimizes internal water flow. By lowering plumbing resistance, it minimizes your filtration pump's operational runtime—saving electricity while slashing monthly gas utility expenses.\u003c\/p\u003e\n\u003cp\u003e### Premium Thermal Engineering \u0026amp; Marine Resilience\u003cbr\u003e*   **Corrosion-Proof Cupro-Nickel Exchanger:** Factory-equipped with a premium Cupro-Nickel Finn Plate heat exchanger. This advanced marine-grade alloy provides exceptional resilience against structural pitting and chemical erosion, making it completely optimized for modern saltwater chlorination ecosystems.\u003cbr\u003e*   **Forced Draft Combustion Hub:** Incorporates a constant-velocity air delivery system that moves air evenly through the insulated Fire Tile combustion chamber. This advanced design traps thermal energy and isolates the burner from outside weather variables, eliminating high-wind flameouts and the need for expensive high-wind stack modifications.\u003cbr\u003e*   **Smart Digital Management:** Features a centralized LED control panel for seamless user setting configurations and instantaneous diagnostic readouts, paired with a reliable single-touch hot-surface electronic ignition system.\u003cbr\u003e*   **Universal Equipment Pad Flexibility:** The flexible layout provides seamless retrofitting compatibility, allowing for quick and efficient replacement of legacy heaters on virtually any existing mechanical pad.\u003c\/p\u003e\n\u003cp\u003e### Technical Specifications\u003cbr\u003e*   **Product Code \/ SKU:** W3H250FDN *(Direct factory replacement for legacy model: H250FDN)*\u003cbr\u003e*   **Thermal Rating:** 250,000 BTUs\/hr\u003cbr\u003e*   **Fuel Source:** Natural Gas (NG)\u003cbr\u003e*   **Heat Exchanger Material:** Premium Cupro-Nickel (Saltwater Optimized)\u003cbr\u003e*   **Altitude Certification:** Certified for stable operation up to 10,000 Feet\u003cbr\u003e*   **Plumbing Connection:** 2-Inch Male Threaded Unions\u003cbr\u003e*   **Venting Versatility:** Fully certified for Vertical or Horizontal forced-draft venting configurations\u003cbr\u003e*   **Electrical Input:** 120V \/ 240V Dual-Voltage Adaptable field wiring\u003cbr\u003e*   **Physical Cabinet Dimensions:** 33\" Width x 33\" Height x 30\" Depth\u003c\/p\u003e\n\u003cp\u003e---\u003c\/p\u003e\n\u003cp\u003e### ⚠️ Critical Compatibility \u0026amp; Strict Factory Warranty Guidelines\u003cbr\u003e*   **Soft-Sided Pool Prohibitions:** This heavy-duty mechanical heating system **IS NOT compatible with soft-sided, temporary, or pop-up above-ground pools** (such as Intex, Coleman, or Bestway) due to inadequate plumbing flow rates. Installing this unit on a soft-sided pool structure **instantly voids the product warranty**.\u003cbr\u003e*   **Water Chemistry Boundaries:** Exchanger pitting, scaling, or structural failures caused by corrosive chemical imbalances, poor pH management, or high sanitizer spikes are explicitly excluded from factory warranty protection.\u003cbr\u003e*   **Warranty Terms:** Backed by a 1-Year Manufacturer’s Limited Warranty covering factory replacement parts only. **IMPORTANT:** To maintain active warranty validity, this natural gas system must be installed, wired, and line-plumbed by a **certified, licensed pool technician or a professional gas fitter**. Proof of licensed installation is mandatory for any factory claims.\u003c\/p\u003e\n\u003cp\u003e---\u003c\/p\u003e\n\u003cp\u003e\u0026gt; 📞 **Natural Gas Meter \u0026amp; Pipe Sizing Consultation:** \u003cbr\u003e\u0026gt; Supplying 250,000 BTUs of natural gas requires verifying that your property’s gas meter, house pressure regulators, and underground pipe sizing schedules have adequate delivery capacity. \u003cbr\u003e\u0026gt; \u003cbr\u003e\u0026gt; Please contact our technical equipment support team directly to confirm real-time warehouse availability, heavy-freight liftgate shipping logistics, or to verify technical compatibility for your setup.\u003c\/p\u003e","brand":"Hayward","offers":[{"title":"None","offer_id":59744612057169,"sku":null,"price":4169.0,"currency_code":"CAD","in_stock":true},{"title":"1 Year - $99.99","offer_id":59744612089937,"sku":null,"price":4268.99,"currency_code":"CAD","in_stock":true},{"title":"2 Year - $198.99","offer_id":59744612122705,"sku":null,"price":4367.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1053\/1186\/2865\/files\/H400FD_500x_6e16f496-abff-4fb8-a6ce-f266ff4d4daf.webp?v=1783205967","url":"https:\/\/poolbees.com\/products\/hayward-universal-h-series-low-nox-250000-btu-natural-gas-swimming-pool-heater","provider":"PoolBees Inc.","version":"1.0","type":"link"}