Hayward Universal H Heater, LowNOx, CU-Ni Exch., 400K BTU, Natural Gas (H400FDN) (W3H400FDN)

Hayward W3H400FDN is Natural Gas - The cupro-nickel heat exchanger places it above its competitors (Pentair, Jandy, Raypak) at similar prices. 84% Thermal Efficiency.The new Hayward W3H400FDN Universal H-Series is a totally new gas heater design that combines industry leading hydraulic performance, environmentally responsible low-NOx emissions and superior reliability with the installation flexibility to easily adapt to new or existing pools and spas for what just might be the most perfect combination of features and benefits ever offered in an in-ground pool and spa heater.Hayward's W3H400FDN Universal H-Series gas heater adapts to each pool and spa owner's needs to make life a little more flexible and convenient.NOTE: The Hayward W3H400FDN Universal H-Series of 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.(This item is new in box)Features:Great Low Profile AppearanceEnvironmentally Responsible Low NOx EmissionsPatent Pending Polymer Header Design for Industry Leading Hydraulic PerformanceTotally Managed Cupro Nickel Heat Exchanger Flow for Superior Reliability2" x 2 1/2" CPVC Union Plumbing FittingsThe Right Connections for Easy Installation, Service and UseUltimate Installation Flexibility for New or Existing Equipment PadsIndependent Left or Right Side Electric, Water and Gas Connections25% Lighter Weight Means Less Physical Effort to InstallOnly Front Panel Access Required for Installation and ServiceEasy Gas Valve AdjustmentEasy Dual Voltage Conversion with Fuse Protected Circuit BoardsOverall Dimensions 37" width, 24" height, 29.50" depth 197lbs.Shipping included with liftgate in the continental U.S.