Kenmore
Excessive Pressure or Temperature / Faulty T&P Valve
Kenmore water heater’s temperature and pressure (T&P) relief valve is dripping or discharging water
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Thermal expansion in closed plumbing system, high incoming water pressure, failed expansion tank, defective T&P valve, thermostat overheating
How to Fix / Troubleshooting
Safety: The T&P valve is a critical safety device. Do not cap or plug it. Hot discharge can cause burns.
- Check water pressure: Use a pressure gauge on a nearby faucet. If static pressure exceeds 80 psi, install or repair a pressure-reducing valve and thermal expansion tank.
- Test expansion tank: Tap the tank; it should sound hollow on top and solid on bottom. Check air charge with a tire gauge (power and water off, system depressurized). Recharge or replace if waterlogged.
- Inspect discharge pipe: Ensure the T&P discharge pipe is properly routed to a safe drain and not restricted.
- Replace T&P valve: If system pressure is normal and the valve still drips, turn off water, relieve pressure, and replace the T&P relief valve with the correct rating.
- Check thermostat: If water is excessively hot, test and replace faulty thermostats or gas control valve.
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Repair Difficulty
Hard
4/5
Required Part
Temperature and Pressure Relief Valve
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