(415) 457-1145 Request Service

Why is My Water Heater Leaking from the Top?

We know that any problem with your hot water heater is a frustrating hassle – especially an unidentified leak. How can you tell if it’s serious? When should you call a plumber? How much is it going to cost? Fortunately, Gotelli Plumbing is here for you. 

As far as leaks go, even though they are a pain to confront, a leak from the top of your water heater is by far the best scenario you could ask for. Leaks from the top of your system are almost always repairable – especially if caught in a timely manner! 

However, these types of leaks must be addressed or they can cause serious damage and become a much larger problem. If you suspect you have a leaking water heater, avoid the electrical and water damage that can occur – contact a plumber.

How Do I Know My Water Heater Is Actually Leaking?

While some people might feel it’s obvious when their water heater is leaking, there are a couple of common culprits that are often mistaken for leaks. If you have a gas water heater, it’s possible for rain to travel down the vent pipe in a storm and collect on top of your water heater. It’s also common for water heaters to produce some condensation. Sometimes an overworked system might produce more condensation than normal, mimicking the signs of a leak from the top. 

Simply dry off the areas in question and return later to see if the water has returned. If it is dry, no worries. If water has collected again, you probably have a leak. 

How Do I Stop The Leak?

To stop leaking water you must first find the source of the leak. You should always turn off your water heater before searching it for leaks. Gas water heaters should have a dial or switch on them to turn off. Electric water heaters can be turned off by switching off the circuit breaker on your electrical panel. 

Once the system is off, find the cold water inlet. Leaving the cold water inlet on will allow you to see where the water is leaking. Dry off the top of the water heater where the inlet connects with the tank. If you are unable to see water leaking out anywhere, press a paper towel down and see where the water soaks it. You can also check the pipes and seals for the source of the leak.

Turn the cold water inlet off once you’ve located where the leak is. This will keep the water from continuing to leak out and cause damage while you attempt to fix it or call a plumbing service. 

 What Causes A Water Heater Leak?

There are multiple reasons your water heater could be leaking. Here are some of the most common causes of water heater leaks from the top:

  • Cold Water Inlet Valve – The inlet and outlet pipes are often sources of leaks. Simply check this valve for any leakage of the water running through it. If it is dripping, try tightening the connection. If it’s still dripping you might need to replace the valve altogether. 
  • Loose/Corroded Pipe Fittings – The fittings on the inlet/outlets are called dielectric nipples. They are made to connect two dissimilar metals and can become loose or corroded. If these fittings are leaking, try to tighten them. Pay attention to their quality as well. If they look rusty or deteriorated, you might need to replace them. Rusted pipe fittings could also indicate tank rust as well, so keep a watchful eye out.
  • Temperature and Pressure Relief Valve – This valve’s purpose is to control the temperature and pressure and can be located on top of your tank. If you notice water leaking from the threads of this valve, it is a good idea to replace it all together. The valve is there to ensure the safety of your tank, so it’s best to err on the side of caution when it comes to their function.

If you have any more questions about your water heater health, contact Gotelli Plumbing. We’re the best Marin County water heater repair team to trust with your hot water. We have decades of experience and are ready to help!

Why Choose Gotelli Plumbing?

5-star customer service
Customer Focused
Our goal is to give every customer the best plumbing service available. Our technicians are professional and well-trained to make sure we achieve that goal.
family owned business
Family-Owned and Operated
We're a family-run business living and working in Marin County, so treating our neighbors like family is the center of our values.
sewer services
Reliable Service
Our technicians are background checked and trained in the latest plumbing advancements to ensure you get the service your home or business deserves.

What Our Customers Say

Very Professional

Very professional, very accommodating and very successful unclogging solution to our plumbing emergency. Many thanks!

Michael M.

Fast and Efficient

It was great working with Sam S! He’s fast and efficient. He found the problem in a matter a few short minutes. Then he had the part delivered to our home. Thank you!!!

Stephen S.

Courteous and Thorough

Cory was very professional, courteous, thorough, and fixed the problem. Also, the women I spoke with on Friday morning was also very courteous and accommodating . 5 stars for sure!!!

Chris H.

Pleasant Attitude

Cory came out to inspect a questionable smell from under my house and quickly was able to identify the source – a decomposing rat that my pest control guy was on able to locate after three previous visits! Thank you Cory for your fast and efficient service and a pleasant attitude!

Rebecca C.

Quick Response Time

The response from Gotelli Plumbing was excellent. The next time Tom arrived right on time and the quality of his work was outstanding. When he finished he walked me through everything he had done and I could not have been more pleased with the results. I’m so thankful to have such professionals available when need and on such short notice.

Raymond R.

Excellent Service

Tom provided excellent service. He is obviously experienced- and quickly solved the problem. Our gas had to be shut off, so we were without our stove to cook, furnace to heat and hot water. Our home is happy again!

Keith B.

Superb Service

Tom of Gotelli Plumbing provided superb service for us in replacing a very balky tub spout, and worn out toilet parts. Not only was he extremely professional and thorough but he was able to answer all my questions concerning the service. I would give 6 stars if I could.

Edward D.

Always on Time

Tom has worked on numerous plumbing issues in our home over the years. He’s always on time, polite, hard working and an excellent plumber overall. I strongly recommend Tom R. for any plumbing jobs you need! We’ll continue to use Tom for all our future plumbing problems. Thanks!

Rachel C.

Fantastic Service

Fantastic service from Steve, who came to our home on time, surveyed the issue, and came back to fix the problem – all with a smile.

Bill D.

Great Experience

I had a great experience with Gotelli Plumbing when we needed a leak in a pipe fixed. Tom was professional and friendly. He also got the job done faster than original estimated, so the work was less expensive than I anticipated. I will use Gotelli Plumbing again in the future.

Kendall F.

Affordable Pricing

Water heater died just in time for Thanksgiving company to arrive. Gotelli sent Joey out first thing this morning. Not only was Joey a super nice guy, he fixed our heater quickly and for $450 less than a competitors bid. Will be going to these guys for all of our plumbing needs in the future!

Becky R.

Fabulous Attention to Detail

Fabulous attention to detail…every decision is made with first rate materials. No cutting corners…great customer service!!

Sherri C.