• Hayward Universal H-Series W3HS400FDN In-Ground Natural Gas Heater with OmniX 400K

Hayward Universal H-Series Natural Gas Pool Heater 400K Low NOx Heater - W3HS400FDN

The Hayward Universal H-Series W3HS400FDN is a 400K natural gas pool and spa heater for in-ground applications, with OmniX embedded intelligence and a cupro-nickel heat exchanger.

Product details

  • Brand: Hayward
  • Series: Universal H-Series
  • Model: W3HS400FDN
  • Fuel: Natural gas
  • Controls: Universal Display with OmniX embedded intelligence
  • Heat exchanger: Cupro-nickel

Controls and connectivity

Hayward's Universal Display provides a consistent, intuitive control experience across Omni, OmniX, and competitive automation systems. OmniX embedded intelligence provides enhanced programmability, advanced diagnostics, and remote connectivity.

Heating and installation features

  • The cupro-nickel heat exchanger helps protect against corrosion and premature wear.
  • Totally Managed water flow is designed for hydraulic performance.
  • Low NOx emissions meet clean air quality standards.
  • The Universal H-Series is engineered for easy drop-in replacement, with direct compatibility with Hayward plumbing adapters.
  • Front-panel-only access simplifies service and maintenance.
  • A universal junction box allows electrical installation on either the left or right side.
  • A plug-in 120-volt electric cord simplifies installation.
GTIN: 610377469159
SKU: W3HS400FDN
Brand: Hayward
  • We are an authorized Hayward dealer!
$5,099.00
$6,731.00
Shipping and tax are calculated at checkout.
In stock

Est. 7-10 business days for freight delivery.

  • Free Shipping On orders over $150
  • 30-Day Returns Easy return policy
  • Manufacturer Warranty Manufacturer warranty included

Hayward W3HS400FDN is Natural Gas - The cupro-nickle heat exchanger places it above its competitors (Pentair, Jandy, Raypak) at similar prices. 84% Thermal Efficiency. The Hayward W3HS400FDN 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)

Key Features

  • Standard cupro nickel heat exchanger
  • Excellent salt water and chemical corrosion resistance
  • Exclusive "Totally Managed" cupro nickel heat exchanger water flow
  • Same water velocity through all tubes for faster heating
  • Patented header by-pass design
  • Up to 18 percent savings by reducing pump run-time
  • 2in x 2 1/2in CPVC union plumbing connections
  • Common union for installation or service, adapts to larger plumbing recommended for greater efficiencies
  • Low NOx emissions - meets clean air quality standards