Hayward FDXLHXA1400ASME Heat Exchanger Assembly – ASME Certified Replacement for H400FD Universal H-Series Heater

Key Features

• Genuine Hayward OEM Part: Designed specifically for the H400FD Universal H-Series ASME model pool heaters.
• Commercial-Grade Cupro-Nickel Construction: Provides superior resistance to corrosion, high flow rates, and chemical exposure — ideal for saltwater or heavy-use environments.
• ASME Certified: Meets rigorous safety and durability standards required for commercial pool applications.
• Restores Full Heater Output: Regains the original 400,000 BTU heating capacity with proper replacement of damaged or leaking heat exchanger.
• Drop-In Fit: No retrofitting necessary — factory alignment with Hayward H400FD heater internals and headers.

Product Overview

The Hayward FDXLHXA1400ASME Heat Exchanger Assembly is the OEM replacement for the Hayward Universal H-Series H400FD ASME-certified pool heaters. Constructed from high-performance cupro-nickel tubing and designed for commercial compliance, this heat exchanger ensures optimal thermal transfer, extended durability, and compatibility with aggressive pool environments including saltwater. Ideal for replacing worn or leaking exchangers and restoring full heater function.

Specifications

• Part Number: FDXLHXA1400ASME (or FDXLHXA1400A)
• BTU Rating: 400,000 BTU
• Heater Compatibility: Hayward H400FD ASME Universal H-Series
• Material: Cupro-Nickel Tube Bundle
• Certification: ASME Compliant
• Includes: Heat exchanger core, manifold, gaskets, mounting hardware

What’s Included

• Complete Heat Exchanger Assembly (FDXLHXA1400ASME)
• Gaskets and mounting components
• Factory-assembled tube bundle and header system
• *Heater cabinet and electronics not included

Why Buy From Best Buy Pool Supply?

• Authorized Hayward Dealer – Genuine OEM parts only
• Fast shipping
• Experienced technical support to confirm compatibility

Shipping & Returns

• Shipping: Usually ships within 1–2 business days
• Returns: 30-day return window for unused/uninstalled parts

Need Help Confirming Fit?

Call our specialists at (800) 877-1268 or click here to ensure this ASME heat exchanger is right for your H400FD heater.