Hayward Universal H-Series Natural Gas 250,000 BTU Low NOx

The Hayward Universal H-Series 250,000 BTU Low NOx Natural Gas Pool Heater is a high-performance solution designed for maximum efficiency, speed, and environmental responsibility. Engineered for adaptability and built to withstand the harsh effects of saltwater and chemical exposure, it features a cupro nickel heat exchanger that offers superior resistance to corrosion and ensures long-lasting operation.

With an innovative “Totally Managed” water flow system, every tube in the exchanger maintains equal water velocity, promoting even heating and improving overall efficiency. Its patented header by-pass design helps reduce pump run-time—saving up to 18% in energy costs. This unit meets stringent low NOx emission standards, making it ideal for regions with strict air quality regulations.

Built with universal CPVC union connections and a compact footprint, the H-Series heater is easy to install and service—perfect for both new pools and retrofit projects.