Hayward Universal H-Series Gas Heater 250K BTU

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The energy efficient Hayward Universal H-Series Gas Heater 250K BTU successfully offers environmentally-friendly low NOx emissions and revolutionary heating technology to effectively heat a pool or spa.

The energy efficiency of the gas heater is partly due to a state-of-the-art hydraulic design that significantly lowers the circulation pump run time.

The product’s fin plate heat exchanger with cupro-nickel is responsible for heating up a pool or spa in a fast amount of time.

Featuring a forced draft system, the air is constantly moved through the combustion chambers at a steady flow rate, thus removing certain weather variables that can impede heating performance.

Since the item provides exceptionally managed flow, the gas heater is resistant to chemical corrosion and salt water. The product can even tolerate modern salt-based electronic chlorination systems.


  • Totally managed flow provides exceptional corrosion resistance and erosion protection. Ideal for today’s salt-based electronic chlorination systems
  • 83% Thermal efficiency
  • Industry-leading hydraulic performance saves energy by reducing circulation pump run time
  • State-of-the-industry finn plate heat exchanger with special V-groove design for faster heating and longer life
  • Easy to install
  • High and low voltage connections are easy and convenient with left and right side junction boxes
  • Exclusive silicon nitride ignition system for dependable lighting and reliable operation
  • Electronic control display maintains water temperature, monitors heater performance with self-diagnostic capability
  • Unlike older forms of insulation, FireTile securely traps the heat, delivering the most performance from each BTU
  • Environmentally responsible


  • Brand : Hayward
  • Item : Low NOx Pool Heater
  • Series : Universal H-Series
  • Gas Type : Natural
  • Headers : Polymer
  • Control Type : Digital Electric, Dual Thermostat
  • Tubing Material : Cupro Nickel
  • BTUH Input : 250000
  • Cabinet Width : 28 Inch
  • Cabinet Depth : 29-1/2 Inch
  • Cabinet Height : 24 Inch
  • Flue Diameter : 4 Inch
  • Gas Connection : 3/4 Inch
  • Water Connection : 2 Inch x 2-1/2 Inch Unions
  • Voltage Rating : 110/220 V
  • Frequency Rating : 60 Hz
  • Phase : 1-Phase


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