Hayward Universal HC Series NG/LP Dual-Fuel Low NOx Heater 275K BTU HDF275 Parts & Diagram
Replacement parts and exploded parts diagram for the Hayward Universal HC Series NG/LP Dual-Fuel Low NOx Heater 275K BTU (model HDF275). Find the part on the diagram, then look for the same number (#) next to each part in the Available Parts list and add the parts you need to your cart.
Parts marked Alternate are compatible replacements from other manufacturers.
Other Parts on This Diagram
These parts are not listed for online purchase. Contact us with the diagram number and part number to order.
- #2 – HDXFCAP001 – Control Access Panel Assembly
- #3 – HDXFHCC001 – Header Controls Cover
- #4 – HDXFWTP001 – Water Side Trim Panels
- #6 – HDXFEXB001 – Exhaust Box Assembly
- #14 – HDXFHLI400 – HDF High Limit Kit
- #17 – HDXFGSV001 – Gas Valve
- #18 – HDXFMAN001 – Gas Manifold
- #19 – HDXFBWR001 – Combustion Blower
- #20 – HDXFMXN400 – Natural Gas Fuel/Air Mixer
- #21 – HDXFBRN400 – Burner
- #22 – HDXFEXP001 – Exhaust Pipe Assembly
- #23 – HDXFIOH001 – HDF Inlet/Outlet Header Kit
- #24 – HDXFVHD001 – V-Header Assembly
- #25 – CHXPLG1930 – Pressure Relief Threaded Plug
- #27 – HDXFHXA400 – HDF Combustion Chamber Replacement Kit
Please confirm your model number matches your existing equipment before ordering.
GTIN:
SKU: DIAGRAM-HDF275
Brand: Hayward
Price range
$35.78 - $241.30
Tax and shipping are calculated at checkout.

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Key Features
- Exploded parts diagram for the Hayward Universal HC Series NG/LP Dual-Fuel Low NOx Heater 275K BTU (model HDF275)
- 11 replacement parts available to order online
- Diagram number shown next to every part for easy matching
- Genuine Hayward replacement parts
- Add multiple parts to your cart at once