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Hayward H400FDN H Series 400K BTU Natural Gas Pool Heater

Availability: In Stock

Regular Price: $2,899.99

Sale Price $2,299.00

You Save: $600.99  (20%)

Quick Overview

Now you can enjoy a warmer pool this season without drastically raising your energy costs. Its hydraulic performance also saves energy by reducing the circulation time of the pump and it can raise the temperature of an 800 gallon pool 30 degrees in less than an hour. Whether you want to extend your swimming season or swim year-round, Universal H-Series heaters give you comfort with efficiency. It’s the perfect addition to your pool system.

Hayward H-Series Pool Heater Brochure

Hayward H-Series Heater Parts

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The Hayward H-Series H400FDN Natural Gas Pool and Spa Heater is environmentally friendly and energy efficient. With an industry leading 84 percent thermal efficiency the Hayward H-Series heater complies with all current California and Texas air quality emission standards. The innovative H-Series heater has superior hydraulic performance which can save energy by reducing the circulation time of the pump.

Other great performance and efficiency-enhancing advancements by Hayward include stainless steel burners, corrosion-resistant Finn Plate heat exchangers with Cupro nickel and insulated Fire Tile combustion chambers which trap the heat unlike other forms of insulation and deliver the highest degree of performance from every BTU. The LED control panel 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.

  • For In-Ground Pools and Spas
  • Electronic Ignition Dual Thermostat
  • 400K BTU Natural Gas (NG)
  • Cupro Nickel Heat Exchangers
  • Easy-to-read L.E.D. digital Control Panel
  • New polymer header provides superior hydraulic performance
  • Larger diameter plumbing systems with 2" x 2 1/2" CPVC unions
  • 1 year warranty from date of installation
  • Meets the NOx Emission standards
Additional Information
Delivery Time LTL Freight 2-7 Business Days
Manufacturer Hayward
Technical Specs

BTU: 400,000
Gas: Natural Gas (NG)
Controls: Digital
Heater Width: 36-½”
Silicon Nitride Hot Surface Electronic Ignition, Dual Thermostat

Owners Manual

Service & Installation Manual



SKU HAY-15-732
Manufacturer Part # H400FDN
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