By Hayward Pool Products
Part # HDXFHFA004
Hayward® Exhaust Vent Adapter – 4" – HDXFHFA004
✅ Genuine Hayward® OEM Replacement Part
⚠️ For Use with HDF Series (HDF275, HDF400, HC Series)
➡️ Ensures Safe Exhaust Venting & Code Compliance
✅ Key Features
Fits 4-inch vent connections
Safely redirects exhaust gases
OEM design for HDF275 & HDF400
Durable construction for long life
Maintains heater safety & efficiency
➡️ The Why
Choosing OEM ensures:
Safe venting that protects your heater
Meets UL & Hayward® standards
Preserves manufacturer warranty
Prevents costly performance issues
✅ Tech Tips
Confirm heater model (HDF275 / HDF400 / HC Series)
Install with a licensed professional
Inspect venting yearly for corrosion or blockages
Use OEM vent parts to maintain full certification
What’s Included
(1) Hayward® Exhaust Vent Adapter – 4"