Why Is My Water Heater Pressure Relief Valve Leaking?
What It Means, Why It Matters, and When to Call a Pro
If you've noticed a leak near the top or side of your water heater, you might be dealing with a leaking pressure relief valve—also known as the T&P (temperature and pressure) relief valve. This small but critical safety device helps protect your home from potential water heater malfunctions and even explosions. At BDP Plumbing, we often get calls from homeowners in Northwestern NJ wondering if a leaking valve is normal or a sign of trouble. Here’s what you need to know.
What Does the Pressure Relief Valve Do?
The T&P valve is designed to release excess pressure or temperature from your water heater. If the water inside becomes too hot (over 210°F) or the pressure rises too high (above 150 psi), the valve opens to release some water, preventing potential damage or even a dangerous burst.
Is It Normal for It to Leak?
Occasional drips? Not always a concern. If the valve releases a little water now and then, especially after the heater has been working hard (like after a long shower or laundry load), it could be doing exactly what it’s meant to.
Constant leaking or pooling water? That’s a red flag.
Common Reasons for a Leaking T&P Valve
1. High Pressure in the Tank
Too much pressure buildup—often due to thermal expansion or a faulty thermostat—can cause the valve to open frequently. If your water pressure regulator isn’t working correctly, it may need to be adjusted or replaced.
2. Excessively Hot Water
If your water temperature is consistently above 120°F, it can raise internal pressure. Double-check your thermostat settings; if that’s not the issue, a malfunctioning heating element might be the culprit.
3. A Faulty or Worn-Out Valve
Over time, mineral deposits, corrosion, or simple wear and tear can cause the valve to fail. In this case, it may need to be replaced.
4. Improper Installation
A poorly installed valve or a missing discharge pipe can create safety hazards. Always have a licensed plumber, like our team at BDP Plumbing, check your setup to ensure it’s up to code.
Why You Shouldn't Ignore a Leak
A leaking valve may seem like a small issue, but it can quickly lead to:
- Water damage or mold near the unit
- Corrosion and tank failure
- Increased utility bills
- Safety hazards
If your T&P valve is leaking constantly or in large amounts, don’t wait. It's time to have it professionally inspected.
When to Call BDP Plumbing
At BDP Plumbing & Heating, we’ve helped countless homeowners in Sussex and Morris County diagnose and repair water heater issues quickly and safely. Whether your T&P valve needs replacement, your pressure is too high, or you just need peace of mind, our expert plumbers are here to help.
Concerned About a Leak?
Give BDP Plumbing a call today for reliable, honest service. We’ll make sure your water heater is safe, efficient, and up to code—so you can get back to your day without worry.
