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Top 5 Signs Your Water Heater Needs Replaced

Frances Lange • Nov 19, 2019

When should I replace my water heater?

We hear this question, A LOT.  Just like any other appliance, your water heater will not last forever and at some point it will need to be replaced. It is always better to replace it before your water heater actually goes out. It's one thing to need a repair, which can be performed in most cases when the water heater stops heating. However, when the tank starts leaking it will (in many cases) cause major water damage, so avoiding the issue all together is obviously ideal. That being said, the number one sign your water heater must be replaced is...

1. Your Water Heater Is Leaking

If the water heater is leaking from the tank, you must replace it as repairs are not made to the tank itself. In some cases, you may see the pan underneath the water heater filling with water, but you don't see water streaming down the side of the tank jacket to indicate where it is coming from. In those instances, the tank is leaking from the bottom (and needs replaced).

Something to note: Occasionally you will see the water leaking at the top, right where the nipple connects to the tank. Sometimes this can be repaired, but if the threads on the tank itself are rusted and won't seal properly, the tank will still need to be replaced. (Also, it there has been a small ongoing leak at this connection that has caused a lot of rust or corrosion, it may still be a good idea to opt for replacement.) Any leak on pipes, shut off valves, or on flexes can typically be repaired, so don't confuse those leaks with the tank leaking.

2. Your Water Heater is 10+ Years Old

The average life span (across manufacturers) for a water heater is 10 years, give or take. It is wise to prepare for replacement in the near future if your water heater is near this mark in age, especially if it is located somewhere in the house that water damage would occur as a result of the tank starting to leak (such as an attic, utility room, closet in the home, etc.). Even if the water heater would not cause major damage if it were to leak, keep in mind that it could occur while out of town or on a weekend or holiday (when the price for replacement is typically much higher). You would also be without hot water until you settle on a company with a price you are happy with and got on their schedule. Being proactive works much more favorably for the homeowner.

3. Visual Rust & Corrosion

If you are seeing a lot of rust or corrosion on the exterior of the tank, it is time to consider replacement. Sometimes we have customers ask us to look at their water heater while we are out working on other things in the home because they noticed a lot of visible rust and are concerned. To be honest, if that is the only issue, there isn't much more a plumber can advise other than it is typically recommended to go ahead and replace. There is no way to know exactly how much more life the water heater has.

4. Luke Warm Or No Hot Water

To be clear, when this problem occurs you do not always need to replace the water heater.  In fact, it is very common for our company to make a repair in this scenario versus recommending replacement. It is something to point out however, as some repairs can be fairly costly, especially when the water heater is out of warranty for parts and labor.  Depending on the part needed and what the warranty coverage is when the repair is made, the repair could cost close to 40% of what the replacement cost would be. We always weigh these factors and discuss them with our customers to give them the information they need to make the decision as to whether replacement is a better route to go. Usually the repair is made unless (as mentioned) there is little or no coverage for parts/labor under warranty, and the water heater is already closer to the end of the average life span.

5. Rusty Water

This is another sign that doesn't always indicate you need to replace the water heater soon, but it is something you need to look into. Sometimes galvanize pipe in the home that has not been replaced is the source of rusty water and not the water heater. Over time, the inside of the tank of the water heater begins to corrode and can also cause rusty water. It is important to know that the water heater is the source before incurring the cost of replacement (especially if other signs mentioned do not apply). 
  • First, if the water heater is the source of the rusty water, it will only be on the hot side at fixtures (the cold water will not be affected).
  • Second, this would be a problem you would see throughout the home at different fixtures (for example, it would not be isolated to one faucet).
  • Third, if you don't have galvanize piping in the home, clearly that would not be the culprit and it would most likely be the water heater if the other factors above are true. Do keep in mind that older homes that have had the water pipes replaced could still have sections of galvanize piping that were left, so you still need to weigh out the more obvious indicators to determine if it is the water heater or if galvanize piping could be the source.
It is always good to have your plumber come out and troubleshoot this issue prior to replacing the water heater, unless other signs for replacement exist that indicate you need to replace it anyway. 

How Much Does It Cost To Replace A Water Heater?

We provide very affordable replacements with a streamlined process for our customers. You can find price info along with what is needed to get your water heater replacement scheduled right on our website by clicking here. We are here for you, so give us a call today! 
Call Lanco Plumbing
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