Why Is My Hot Water Tank Overflow Dripping?
A dripping overflow pipe on your hot water tank is a warning sign. Learn what causes it and how to address the issue.
Understanding the T&P Valve
The "overflow pipe" is actually connected to the Temperature and Pressure (T&P) relief valve. This crucial safety component is designed to open and release water if the pressure or temperature inside the tank gets dangerously high.
Why Is It Dripping?
- Excessive Pressure: High municipal water pressure or thermal expansion can cause the valve to release water.
- High Temperature: If the thermostat fails and the water overheats, the valve will open.
- Faulty Valve: Over time, the valve itself can wear out or become blocked with sediment, causing it to leak.
What You Should Do
Never ignore a dripping T&P valve or attempt to plug it. This can lead to a catastrophic tank explosion. Contact a licensed plumber to diagnose the root cause and replace the valve or address the pressure/temperature issues.
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No hot water? Follow these troubleshooting steps before calling a plumber to see if it's a simple fix.