Hayward Universal H-Series Low NOx Natural Gas Heater – 400K BTU

The Hayward Universal H-Series 400,000 BTU Low NOx Natural Gas Heater (W3H400FDN) provides robust heating for pools of all sizes and works with any sanitizing system, including saltwater. Its user-friendly L.E.D. control panel offers clear temperature readings and diagnostic information for easy management. Engineered for energy efficiency, the heater’s advanced hydraulic performance reduces circulation pump run time. The exclusive cupro-nickel heat exchanger enhances durability by resisting corrosion and erosion, making it perfect for salt-based pools. An electronic control system ensures consistent water temperature and features self-monitoring technology for optimal operation. With a forced draft system that regulates airflow and voltage adaptability for easy installation, this heater meets environmental regulations. It also includes a 3-year limited manufacturer’s warranty for added peace of mind.

• Ideal for above ground pools up to 33′ Round and 21’x43′ Oval and inground pools up to 45,000 gallons
• Compatible for use with swimming pools utilizing any type of sanitizing system, including saltwater systems
• Easy-to-read L.E.D. control panel provides digital temperature readout and diagnostics
• Industry-leading hydraulic performance saves energy by reducing circulation pump run time
• Exclusive “Totally Managed” cupro-nickel heat exchanger water flow
• Electronic control/display maintains water temperature; monitors heater performance with self-diagnostic capability
• Totally Managed Flow provides exceptional corrosion resistance and erosion protection. Ideal for today’s salt-based electronic chlorination systems
• Forced draft system constantly moves air through the combustion chamber at a precise flow rate
• Designed with 2″ x 2-1/2″ CPVC unions
• Installation is simplified with voltage that adapts to either 110V or 220V
• Environmentally responsible; complies with all current California and Texas air quality emission standards
• 3-Year Limited Manufacturer’s Warranty on parts only (No Labor)