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5 Causes of Water Heater Leaks

When a water heater starts leaking, many people think immediately that it needs to be replaced, but this isn’t always the case. Here are five causes of water heater leaking that could save your wallet from an expensive water heater replacement.

The Supply Lines

The easiest leak to fix is one from the supply lines that carry water to and from the water heater. Because the supply lines are above the tank, water may be dripping onto the tank and making it look like the tank itself is leaking. You can easily fix a leak from the supply lines by replacing them.

The Water Heater Nipples

If you’ve already replaced the supply lines and water is still leaking near them, it might be coming from the water heater nipples, which connect the supply lines to the heater. Because there is a seam at the threads, it isn’t unusual to find a leak in this spot. You can fix it by simply replacing the water heater nipples.

The T&P Relief Valve

If there’s water coming from the temperature and pressure relief valve, it’s important to take a moment to figure out why. This valve typically leaks only when something is wrong so ask yourself:

  • Has the valve been removed recently? If so, the seal might not be correct.
  • Is the water too hot? Consider lowering the temperature of the heater or investing in a water expansion tank.
  • Is the water pressure too high? You may need a pressure regulator.

If none of the above applies to you, the valve may need replacement.

The Drain Line

Another common source of leaks is the drain line. After flushing or draining a water heater the drain valve may not close completely. You can fix this by completely replacing the valve or capping it with a hose cap. 

The Tank Itself

If none of the previous sources are leaking, you may have a leak from the tank. This is caused by wear and tear and usually appears as a major leak, not a drip. Unfortunately, water heater repair isn’t an option, and you will need to have a new water heater installed.

If you can’t locate the source of the leak or aren’t sure how to fix it, contact the professionals at Parker & Sons. Whether you need water heater installation or minor repairs, our expert plumbers are equipped to handle it with ease.

Why Choose Us?

Find out what makes Parker & Sons stand out.

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Professional Services You Can Count On
For professional, local plumbers serving the greater San Antonio area, you can rely on Parker & Sons to provide expert service for any plumbing job.
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We'll Be There On-Time, Every Time
With Parker & Sons, you don't have to waste time waiting on irresponsible plumbers to show up. We value your time, so we make sure to arrive when you expect us to.
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Red Carpet Service Guaranteed
When you schedule a plumbing job with us, you will get to enjoy our red carpet level of service. We're so confident you'll be satisfied with our service, we put a guarantee on it.
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Fast and Reliable Plumbing Services
We know that time is of the essence with any plumbing job, so we make sure to provide efficient and reliable service.
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Licensed and Insured For Your Protection
We value your safety and peace-of-mind. That's why we are fully licensed and insured so you know that you are protected for every plumbing job.
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Honest and Affordable Pricing
We offer up-front pricing so you are never blindsided by unexpected fees and costs. We make sure all of our pricing is fair and affordable.

What Our Customers Say

Fast & Reliable

Very fast response. Reliable and even let us do some of the work to keep costs down. Really worked with us to sort through alternatives to find the best solution. I have used them about 5 years ago and will certainlycall them again if I ever need anything.

Roberta C.

Very Knowledgeable

I recently had several plumbing leaks repaired and couldn’t be happier with the prompt service I received from Parker and Sons. They are very knowledgeable, friendly, reasonably priced, and do quality work. I would definitely recommend them to my family and everyone. I would trust them to repair any leak in the house.

Stacey C.

Amazing Service!!!

Amazing service!!! Called and came the same day within 2 hrs. Our toilet had to be re-fitted and snaked. They did a beautiful job on the re-fitting and got the large piece of plastic out of the toilet. Will definitely be recommending them to friends and family. Great service, great people, hard to find these days!!!

Shakira C.

Excellent Service!

Excellent Service! We had some work done on our kitchen and Parker and Sons were able to come out to our house and help us with our remodel. Great guys and great service. I would recommend them to anyone needing a plumber service.

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Great to Work With

Jim and his guys are great to work with. Had Parker & Sons come out to take a look at an AC unit at one of my rental properties. Unit is in the attic. Had to replace a coil on it and did a great job. Will definitely use again.

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I have referred Parker and Sons to all of my customers and I would not think of referring anybody else. They have been great and very punctual. All of the plumbers and office staff have been amazing!

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Reasonable Prices

I was in good hands today with journeyman plumber Mark Rizley. He remained until all was better than before. He replaced a PRV and improved a mediocre repair recently done by another well known local company. The price remained reasonable despite the extra effort needed for the job. Well done Mark! Parker and Sons will be my first call in the future.

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This is a fantastic company with outstanding professionalism, quality of work, and customer service. While their prices are extremely competitive, their work doesn’t feel cheap like some of the companies you can hire of off Craigslist or on a FB yard sale page. This is a reputable company with proven work and licensed, skilled technicians.

Ben A.

Fair Prices & Excellent Work

Have used Parker & Sons 3 different times, once for a huge complex plumbing repair and twice for smaller jobs. Fair prices and excellent work/fast response time every time.

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