Hayward H-Series FD Pool Heater Header Assembly | FDXLFOR1930

Hayward Products SKU: HPPFDXLFOR1930

Hayward H-Series FD Pool Heater Header Assembly | FDXLFOR1930

Hayward Products SKU: HPPFDXLFOR1930
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Hayward FDXLFOR1930 O-Ring Kit for H-Series Low NOx Pool & Spa Heaters

Part # FDXLFOR1930 — a replacement O-ring kit designed for the front header on Hayward Universal H-Series Low NOx heaters. This kit restores the seal between the header and heat exchanger, helping prevent leaks and maintain proper pressure in the system.

Key Features

  • Genuine Hayward O-ring kit engineered for the front header area of H-Series low NOx heaters.
  • Contains all necessary O-rings and sealing components to restore the header seal.
  • Designed to resist pool/spa heater corrosion, high temperature cycling, and standard chemical exposure.
  • Direct replacement for the heater’s front header seal — no modification required.

Typical Applications

This O-ring kit is appropriate when the front header of a compatible Hayward heater begins leaking at the header connection, or when servicing the heater and re-sealing is required. Used in low NOx heater models where the header must be removed or replaced, or the seal shows signs of wear or degradation.

Installation & Compatibility Notes

Before installation, shut off the heater and allow it to cool completely. Turn off any water flow and relieve system pressure. Remove the header assembly, clean the sealing surfaces thoroughly, install the new O-rings from the FDXLFOR1930 kit per the service instructions, reassemble the header and retighten to the manufacturer’s specified torque. Restart the heater and verify there are no leaks at the header connection.

Why Choose This Kit?

Selecting the Hayward FDXLFOR1930 kit ensures you are using manufacturer-approved sealing components designed for the H-Series heaters. It helps maintain system integrity, prevents future leaks, and supports proper heater performance and longevity.

Maintenance Tips

  • Inspect the header connection annually for signs of seepage or corrosion around the header seal area.
  • If the heater has been subject to freezing, high chemical load or frequent thermal cycling, consider replacing the O-rings proactively when servicing the header.
  • Use only clean, lint-free cloths to clean the sealing face and always install fresh O-rings from the kit — reuse of old O-rings may lead to leaks.
  • Ensure water chemistry is properly maintained to reduce corrosion and thermal stress on heater components and seals.

Hours Of Operation: 

Monday - Friday: 8:00 am to 4:00 pm Phoenix Time

Saturday and Sunday: Closed

  • Orders costing more than  $300 WILL be required to have signature confirmation upon delivery.
  • Handling time is typically only 1 day.   
  • Any item ordered after 1pm Phoenix time, may not ship same-day.
  • Call us if you require expedited shipping and we can give you quotes based on your needs.

Return Policy:

  • All products, except as noted below, are eligible for return up to 30 days after receipt of item.
  • For returns, an RMA form must be filled out HERE or customers can call for additional help.
  • Shipping costs will be deducted from all returned items.
  • Any item that is missing accessories, original packaging, or is not returned in the same condition that it was received in, may be subject to a re-stocking fee up to 100% based on the condition we receive it in. 
  • Items broken, damaged, or inoperable due to installer error will not be refunded.
  • Fill out the return form or give us a call to obtain an RMA and return shipping label.
  • There are no returns on the Pentair Colorsync 618031
  • No returns on pool cleaners.
  • No returns on opened seals and o-rings.
  • No returns on capacitors.
  • If a light is returned because it "doesn't work" and it tests fine, the cost to ship and a re-stocking fee will be deducted from the refund.
  • All products denied upon arrival at customers house WILL be charged the cost to ship.
  • Visa Gift Card Promotions: Gift cards are sent within 14 days of the order. When accepting the Visa Gift card, you agree that if your order is returned or refunded, this amount will be deducted from the refunded amount. All Visa Gift cards are sent via email in an E-Gift Card format and are non refundable.
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