Bradford White gas control valves are chassis-specific — Defender, ICON System, and RG-series all use different part numbers. Verify the data plate model number before sourcing. $220-$380 part; pro-required replacement.
Symptoms of gas valve failure
- Pilot lights, stays lit, but main burner never fires
- Main burner cycles unpredictably
- Pilot won't stay lit despite new thermocouple AND clean intake filter
- Water too hot regardless of thermostat setting
- Gas smell at valve body (immediate replacement)
The repair-vs-replace decision
Bradford White gas valve replacement: $220-$380 part + $200-$400 labor = $420-$780 total.
| Tank age | Action |
|---|---|
| Under 6 years | Replace valve — tank has 9+ years remaining |
| 6-10 years | Replace valve if other components good |
| 10-14 years | Consider full replacement |
| 14+ years | Replace entire unit |
Bradford White's tank-longevity reputation pushes the replacement-of-unit threshold later than competitors — many BW tanks at 14 years are still in solid shape and warrant the valve replacement.
Why DIY isn't recommended
Gas valve replacement involves gas-supply disconnection and pressure-testing. Leaks = explosion risk. Gas-certified plumbers required.
Warranty
Bradford White covers gas valve under parts warranty (6 years on Defender/ICON/RG, 10 years with upgrade). Check warranty status first.
Bottom line
$220-$380 part, pro install. Verify chassis (Defender/ICON/RG) before sourcing. For full parts see parts hub.