Hayward W3H400FDN Natural Gas Inground Pool and Spa Heater 400,000 BTU/HR Now with Cupro Nickel Heat Exchangers 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 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. NEW Hayward Universal H-Series Low NOx heater combines industry-leading hydraulic performance; environmentally responsible low NOx emissions and a standard cupro nickel heat exchanger with a low profile appearance, lighter weight design, independent left or right side electric, water and gas connections plus 2" x 2 1/2" CPVC union connections to provide the ultimate installation flexibility for new or existing equipment pads. NOTE: The Hayward Universal H-Series heaters meet the NOx Emission standards set by the California South Coast Quality Air Management Commission for 2001 and the Texas Natural Resource Conservation Commission Code. Aplplications: Forced draft system constantly moves air through the combustion chamber at a precise flow rate, eliminating all outside weather variables that can effect the heating performance, such as high wind conditions -- without a high wind stack. Our patented single header "V" baffle design heat exchangers allow for long life, fast heating and virtually no condensation. All Hayward heat exchangers are now constructed with highly resilient Cupro Nickel for greater durability and longevity. Easy-to-read L.E.D. digital Control Panel provides digital temperature readout and diagnostics for quick identification of components that might need service. New polymer header provides superior hydraulic performance to save energy and protect against the damaging effects of erosion from high flow conditions for improved reliability. Designed for today's larger diameter plumbing systems with 2" x 2 1/2" CPVC unions. Specifications and Dimensions: Electronic Ignition, Dual Thermostat Model Number BTU Input Gas Type Heater Width Ctn. Qty. Ctn. Width H250FDN 250,000 Natural 28" 1 165 lbs. H250FDP 250,000 Propane 28" 1 165 lbs. H350FDN 350,000 Natural 33 1/4" 1 195 lbs. H350FDP 350,000 Propane 33 1/4" 1 195 lbs. H400FDN 400,000 Natural 36 1/2" 1 197 lbs. H400FDP 400,000 Propane 36 1/2" 1 197 lbs. High altitude versions available (certified up to 10,000 ft. above sea level). Indoor Adapter Kits Model Number BTU Input Ctn. Qty. Ctn. Weight FDXLIVT1250 250,000 1 7 lbs. FDXLIVT1350 350,000 1 8 lbs. FDXLIVT1400 400,000 1 9 lbs. Overall Dimensions: One Year Limited Manufacturer Warranty We are a Authorized Hayward Dealer!