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Presenting Hayward's world-class heater with an Earth-friendly conscience—the Universal H-Series heater! While all Hayward'series heaters are energy-efficient, the Universal H-Series Low NOx heater has an 83-84 percent industry-leading thermal efficiency and complies with all current California and Texas air quality emission standards. The low NOx emission makes it a perfect choice for the environmentally concerned.

Enjoy a warmer pool this season without your fuel costs skyrocketing. Hayward's H-Series heaters represent innovative heating technology for pools and spas. Its hydraulic performance also saves energy by reducing the circulation time of the pump. It can raise the temperature of an 800 gallon pool 30 degrees in less than an hour—you'll feel the benefits the moment you step into the water.

Other performance and efficiency-enhancing advances include stainless steel burners, corrosion-resistant Finn Plate heat exchangers with Cupro nickel, and insulated Fire Tile combustion chambers. This traps the heat unlike other forms of insulation delivering the highest degree of performance from every BTU's heater performance for added convenience and maximum comfort with minimum effort. The ignition system delivers dependable lighting and reliable operations with just a touch of a button. The forced draft system constantly moves air through the combustion chamber to eliminate all outside weather variables affecting heating performance, such as wind conditions, eliminating the need to install a high-wind stack.

Additionally, the Universal H-Series heater is easy to install and combines advanced technology with universal-fit flexibility making it virtually compatible with any new or existing equipment pad. This heating mixture sustains your swimming season, adds to your comfort, is energy efficient, and reduces your fuel costs. This low NOx emissions heater is perfect for you and the environment—all at the same time.

The models listed are natural gas (electronic) outdoor heaters. You will need to order the appropriate indoor draft hood if placing your heater inside. They are listed in order of BTU's.

H150 Forced Draft H-Series 150,000 BTU Natural Low NOx Electronic Ignition Heater Item: #H150FDN
H200 Forced Draft H-Series 200,000 BTU Natural Low NOx Electronic Ignition Heater Item: #H200FDN
H250 Forced Draft H-Series 250,000 BTU Natural Low NOx Electronic Ignition Heater Item: #H250FDN
H300 Forced Draft H-Series 300,000 BTU Natural Low NOx Electronic Ignition Heater Item: #H300FDN
H350 Forced Draft H-Series 350,000 BTU Natural Low NOx Electronic Ignition Heater Item: #H350FDN
H400 Forced Draft H-Series 400,000 BTU Natural Low NOx Electronic Ignition Heater Item: #H400FDN