Hayward H400FDN Universal H Series 400 000 BTU Pool and Spa Heater Natural Gas Low Nox

$2,205.99

Standard Cupro nickel heat exchanger for superior value and reliability

SKU: B00212G3DI Category: Tag:

Description

Before You Buy: Hayward H400FDN Natural Gas Heater

The H400FDN is the 400,000 BTU natural gas model in Hayward’s Universal H-Series. Two checks matter most before ordering:

  • Fuel type: this listing is the natural gas configuration; if your equipment pad runs on propane, this is not the right fuel-specific unit.
  • Output rating: the listing size option designates this as the 400,000 BTU (H400FDN) model — match that against the sizing spec for your pool rather than assuming more BTUs is better.

The listing describes it as a Low NOx heater, relevant where local air-quality rules restrict non-compliant models. Documented design features include a forced draft system that moves air through the combustion chamber at a precise flow rate, a cupro nickel fin-plate heat exchanger, and an LED control panel with digital temperature readout and diagnostics to help pinpoint service issues.

Gas and electrical work on a heater should be done by a qualified technician following the manufacturer’s instructions.

Source: Hayward H400FDN listing (Amazon).


Hayward’s Universal H Series 400 000 BTU Natural Gas Heater combines advanced technology with universal fit flexibility making it the perfect heater for new or existing installations. This new design offers left side or right side electric gas and water connections with 110v or 220v electric hook up. This enhanced adaptability coupled with a lightweight design a modern low profile appearance and front panel only access required for both installation and service ensures compatibility with virtually all new or existing systems and equipment pad configurations. The Universal H Series Heaters feature an easy to use digital LED control panel along with industry leading hydraulic performance for reduced circulation time. Low NOx emissions meet all current California and Texas air quality standards. Built to last each heater utilizes Silicon Nitride Hot Surface Igniters stainless steel burners insulated combustion chambers and Cupro Nickel Heat Exchangers for superior durability. Features 2 x 2.5 inch CPVC union plumbing connections. For residential natural gas use only backed by a 1 year warranty. Standard Cupro nickel heat exchanger for superior value and reliability
Patented polymer header and bypass valve design for the ultimate in hydraulic efficiency and reliability
Hayward Universal design for easy and versatile professional installation
Environmentally responsible low NOx emissions to meet or exceed air quality emission standards in all Low NOx regions

More Info and Reviews


Manufacturer: Hayward;
Model: H400FDN;
MPN: H400FDN;
Part Number: H400FDN;
UPC: 610377027250;
Color: Natural Gas;
Brand: Hayward;
Department: ;
Size: 400 000 BTU;
Warranty: ;
Label: Hayward;
Amazon Sale Rank: 8868;


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