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W3H400FDN previously H400FDN.
For Altitudes Up To 3,048 Meters (10,000 Feet)
Presenting Hayward®'s world-class heater with an Earth-friendly conscience; the Universal H-Series heater! While all Hayward H-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 pool owner.
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 and you'll feel the benefits the moment you step into the water. This approach to heating your pool is an efficient use of energy; showing once again our commitment to developing earth-friendly products.
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. Equipped with an LED control panel it monitors 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.
Warranty Coverage: At the manufacturer's discretion. Limited warranty covers replacement parts and labour if the heater is installed with a pool or spa. The Applicable Warranty Period is one (1) year from the Purchase Date. The warranty does not cover damage caused by improper water chemistry. The warranty will be void if the heater is not installed by a licensed technician, or the heater has been installed on a soft sided pool. Please see product manual for specific warranty details.
Start a Warranty Claim:To begin a claim please email the model number, serial number, photo/video of the issue, and a detailed description of the issue the heater is experiencing to [email protected].
Heater worked great the first season but at start of second season it would not fire up displaying an ignition failure code. Had to replace the gas valve. Wasn’t expecting a high repair cost so soon! Unfortunately it was a few months passed the 1 year warranty.Verified Review
Perfect! I love the free shipping as well. This has been installed and working for 2 seasons. Easy as pie to use and warms the pool within an hour or less.Verified Review
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