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When Should I Replace My Water Heater?


When your shower water turns to ice and the clothes coming out of your washing machine are freezing, you know that something is wrong with your water heater. Water heaters keep your water hot enough to allow for important daily tasks like showering, doing dishes, and washing laundry. 

If you’re wondering when to replace your water heater, this article is designed to help you figure it out.

How Do I Know When to Replace a Water Heater?

There are two ways of knowing when your water heater is on its last legs. You can tell by checking the age of your water heater or by noticing problems occurring with the heater. If your water heater is close to, or older than, ten years old — you need a water heater replacement.

Additionally, there are signs that can indicate that something is wrong with your water heater. Signs you need a new water heater include:

  • Leaks from the heater
  • Rusty water output
  • Cold water comes out when your turn on the hot water tap
  • Loud noises when the water is heating

These are all symptoms that your water heater might be broken. Not every issue with your water heater will require a total replacement, though. Sometimes, certain parts can be repaired or replaced, including:

  • The expansion tank
  • The anode rod
  • The pressure relief valve
  • The thermostat
  • The water heater element

When you are experiencing issues, a professional plumber can inspect your heater. They will check for signs that you need a new water heater or tell you if there are certain parts that can be repaired. 

Should I Replace My Water Heater Before It Fails?

If a water heater can be repaired, is it worth the cost to replace it altogether? Depending on a variety of factors, the answer is yes…and no.

No matter how responsible you are when keeping up with your water heater maintenance, or the number of tips and tricks you read on Reddit about water heater repairs, your heater will, eventually, need to be replaced.

The system is constantly producing high-temperature water, which can be corrosive on any material.  After a certain number of years, it will no longer be repairable, and you will need a new unit if you want to continue to have hot water in your home.

There are different models of water heaters, and the lifespans of these heaters vary. It’s important to consider what kind of heater you currently own when determining whether you should replace your hot water heater.

How Long Does a Gas Water Heater Last?

If you currently have a gas water heater, you are in the majority. Standard models of this type of heater are among the most common in U.S. households, and they are also the most affordable.

They don’t last as long as others, with the average lifespan being between eight and twelve years, but they are not overly expensive to replace, and they can be highly functional during their lifespan if they are well-maintained. 

Do Electric Water Heaters Last a Long Time?

Electric hot water heaters can work for many years. This option has a longer shelf-life than the gas heater if you take very good care of it. Just like most appliances, preventative maintenance is key to achieving these results.

When you care for it properly, your electric heater can be in good working order for up to fifteen years. If you are in the market for a replacement hot water heater, an electric model is a solid choice.

Can a Hot Water Heater Last Twenty Years?

You might have heard that if you take extra good care of your heater, it will far surpass its expected lifespan. If you believe this, you might keep putting off your hot water heater replacement one more year in the hopes of reaching this twenty-year mark.

There is a silver lining to all of this. Most water heaters will not function longer than twelve years, but if you are in the market to replace your heater, you might want to try a tankless water heater. Tankless water heaters can last twenty years before being replaced.

If you want a water heater with a longer lifespan, this is a great option to explore in place of more traditional models. However, these heaters are more expensive to buy than gas or electric heaters. The upside is they are cheaper to operate.

So the question remains — do you replace your water heater? Determining how old it is and how many repairs it has already undergone will be the best way to figure out the answer.

Contact Paul The Plumber 

If you know it’s time for a hot water heater replacement, call the team at Paul The Plumber. We serve everyone in Derry and the Southern New Hampshire area, and we look forward to seeing you soon.

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S. Baraket

Never used Paul The plumber company before but I’m glad I did. Very courteous, professional and pleasant from the answering service (Diane) to employees (Jeremy). They diagnosed the problem and fixed it in no time. Very happy and satisfied with their service. Definitely will use again. Thank you

V. Vincze

We had an issue with our water…too hard, calcium deposits, and very little pressure in our master bathroom shower only. The techs (Mike E. & Tyler S.) arrived right on time. They were friendly and very personable. After installing our whole house filtration system and successfully finding the issue with our master bathroom, they left the work areas in pristine condition. They were meticulous in their work, and I highly recommend them for any plumbing needs!

J. Shea

John was wonderful. He found the problem right away and fixed it. He checked other outlets just to make sure I would be safe. He explained different programs the company offers also. I’m very happy.

K. MacCallum

First time customer, and am very pleased with the whole experience. The highlight was definitely with the technicians assigned to the job and their work – Tyree and Corey were clean, polite, well-informed, and very helpful with some of the questions I had along the way. Their work appears to be top-notch, and they made sure no mess was left behind. Will definitely be calling and requesting these two again on any future needs.

D. Weaver

What a fantastic business. Helped us work with our water district in resolving meter replacement issues. They also fixed a pipe leak that had developed over time. Caleb was wonderful and answered our questions as well as working with the water district engineer on the meter issues. So easy to work with.

T. Minasian

These are the after photos of the Rinnai tankless water heater installation and vent to the outside. It was important to me that the crew was able to use the existing vent hole to the outside to run both the intake vent pipe and the outside vent pipe. It made the job very clean and did not change the appearance of the outside wall. A shout out to Mike E, Caleb, Josh & Corey

S. DesMarais

Josh was amazing. He was able to install my ring doorbells with no issues. He also did a great check of my homes smoke detectors and a few electrical plugs. He was thorough, Knowledgeable, and easy to work with. I would definitely use them again.

D. Marchand

I cannot say enough about this company!!! Their only concern is that you are up and running again with no worries. I’ve had Kyle the plumber, and Josh their electrician out here and both are polite, well trained and you can tell they truly care about getting you back in service. Great service, well trained caring staff! I will never go anywhere else!

J. Wojo

DJ from PTP was incredibly helpful and knowledgeable. My shower was not draining and it became a bigger project than I thought it would and they came out quickly and were able to fix my problem. Then when my water heater had a slow leak they came back out quickly to attend to it and fix my problem. I really appreciate their hard work. Thank you so much!! Would definitely recommend them.

Michele

I’ve used Paul the Plumber twice now for electrical issues and they have been wonderful each time. They are fast, polite, knowledgeable, and very fairly priced. They explain everything well and answer my questions thoroughly and I feel safer now knowing what was causing my electrical issues and having it fixed! I will be using Paul the Plumber for all my household needs going forward

M. Richdale

Thanks to Mike Vallee from Paul the Plumber for responding to this new customer’s call so quickly. He was courteous, thorough, explained the repair he was doing and left the work area spotless. I highly recommend Paul the Plumber (and Mike!) to anyone looking for a reliable plumbing company.

Nick Boudreux

Had a well pump that was shorting out and pretty much had no water. Adrian from this company not only got out next day but was great to work with. He was very friendly and knowledgeable I would definitely recommend this company to anyone that needs work done! Thanks again guys!

H. MacPherson

I would recommend Paul the Plumber 100%. They offered same/next day service. They were friendly, professional and quick – from the office staff to the technicians. Overall an amazing experience from start to finish.

W. Chepren

I made an appointment on line the morning of July 31 and two trucks showed up at 1:00 pm right on time that same afternoon. Both guys were friendly and very knowledgeable. They quickly found the source of the wet patch on my ceiling which wasn’t the plumbing but a problem with the shower curtain. This is the second time I have called Paul. Both times I got outstanding service and will always call on Paul the Plumber for any plumbing problems in the future. Very reasonable cost for the visit.

D. Lefort

Arrived as scheduled to fix a leak from the shower valve. Tried to fix old 30 or 40 year old unit but had to replace with a new one. Quality work, parts and cleaned up when they were done. Would definitely use again.

K. Bernardo

We’re first time home owners and needed help with some plumbing and adding a filter system. They were able to get a technician scheduled to our house within a day or so of me contacting them. Mike was super helpful and was able to complete all the jobs in a timely manner, and also cleaned up the areas he was working in. Overall a great experience and would definitely use them for future jobs.

Serving southern NH, Seacoast, and greater Concord area

Paul The Plumber is proud to say that we’ve been providing high-quality service in plumbing, heating, air conditioning, and electrical for more than 22 years in Derry, NH, and the southern New Hampshire area.

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