Test water heater T&P relief valve
Why it matters
The T&P valve prevents tank explosion by releasing excess pressure. Constant weeping signals expansion tank or valve failure.
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How to do it
- 1
Locate the T&P relief valve (top or side of water heater tank).
- 2
Place a bucket under the discharge pipe to catch water.
- 3
Lift the test lever firmly for 2-3 seconds and release.
- 4
Listen for air/water discharge and verify valve snaps shut.
- 5
If valve drips continuously, water heater needs professional service.
- 6
Check expansion tank air pressure (call a pro if weeping continues).