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If you own a water heater at home, you know the importance of a pressure relief valve (PRV). This valve is responsible for regulating the pressure inside your water heater tank, preventing it from exploding due to excessive pressure buildup. However, there are times when this valve may malfunction and start leaking. Thankfully, it’s not something that you should panic about. In this blog, we’ll take a closer look at the causes of a PRV leak, how to troubleshoot it, and what you should do if you can’t fix it yourself.

Reasons for an RPV Leak 

First, let’s identify some of the common reasons why a PRV leaks. As with most plumbing issues, there could be a variety of reasons for this problem. In some cases, it may be due to a faulty valve or damage to the release pipe. Or, it could be caused by pressure issues in the water heater tank. Another reason could be due to an accumulation of debris around the valve, preventing it from functioning properly. Whatever the cause, it’s important to address the issue as soon as possible since the pressure relief valve is a critical safety feature in your home.

Switch Off The Power Source

If the PRV valve in your water heater is leaking, the first thing to do is to switch off the power source to the tank. This is important to ensure your safety, and it also prevents damage to other areas of the water heater. After turning off the power, assess the extent of the leak. If it’s a minor leak, it may be due to dirt or debris or buildup around the valve, which can often be cleared manually. You may be able to unscrew the valve and clean it with a wire brush or flush it with water to remove any blockages.

Wear and Tear or Damage

If the leak persists, it may be due to wear and tear or damage. If you’re not confident in repairing the problem yourself, give your local plumbing service a call. They will have the proper tools and expertise to troubleshoot and replace the pressure relief valve if necessary. In some cases, a leaky PRV can be a sign of a bigger problem in your plumbing system. So, it’s important to have a professional inspect the plumbing to prevent further issues.


A leaking pressure relief valve in your water heater can be a major inconvenience and a safety hazard for your home. Luckily, there are a few things you can do to troubleshoot the problem. First, make sure to turn off the power source and assess the extent of the leak. If it’s a minor leak, you may be able to clear any debris manually. If it persists, call your plumber for inspection and repair. Remember, a PRV is an important safety feature in your home, and it’s crucial to keep it functioning properly.

If you require professional assistance for a leaking pressure relief valve, do not hesitate to contact S3 Plumbing. Our team of skilled plumbers is ready to inspect, troubleshoot, and fix any issues in a timely and efficient manner.