Can A Tankless Water Heater Leak? – SIgns & Preventions

Can A Tankless Water Heater Leak?

Can A Tankless Water Heater Leak?

Yes, a tankless water heater can leak. The causes can be from a number of things. Anything can break at any time so it’s best to know what can go wrong and how to fix it so you can avoid paying for unnecessary repairs.

Can A Tankless Water Heater Leak From The Bottom or Top?

A tankless water heater can leak from the bottom, top, or side of the unit depending on where it is leaking from inside the unit itself.

Signs of Leakage In Your Tankless Water Heater 

leakage can be seen visually. you can find leakage from the pressure relief valve, water pipes, and the bottom of the heater.

Why Is My Tankless Water Heater Leaking?

There can be multiple causes for tankless water heater leakage. On the most part, it can only be user error or defective manufacturing that can cause leakage however there can also be something wrong with the unit that can cause leakage even if it is new.

other than that we have listed some of the most common causes below.

Improper Venting:

If the unit is installed in an enclosed space where there can be no ventilation then you can run into problems with the pressure and temperature building up inside the tankless unit which can force it to leak as a result. Make sure you can install it in a place with proper ventilation so that any buildup can be avoided.

Improper Installation:

If your unite is installed improperly then can Also cause problems and can even lead to leakage. So make sure if you are not well experienced with how to properly and safely install a tankless water heater hire an expert.

If the unit is using too much energy then it can cause the internal heating element to overheat and can also result in tankless water heater leakage or can even break down completely. So make sure you know how much energy your household needs before getting a tankless unit to avoid any of these problems.

We have written a detailed guide on both gas tankless water heaters and electric tankless water heaters make sure to check them out

Gas Piping:

If there are any issues with the gas piping in your home ou will find a leak of gas. Make sure you can get it inspected by a professional so all the lines can be checked and if necessary replaced or repaired. This can prevent further problems down the road that can cost more than just the repair.

Water Pipe Connections:

If there can be a leaking connection in the water line your tankless water heater must be leaking, Make sure with pressure testing that all the pipe connections can be airtight, and if not then they need to be repaired or replaced.

Leaks In The Heat Exchanger:

is also a leading cause of leakage and can be hard to detect if you can’t get access to the inside of the unit, but that can only happen with improper installation and overuse. Access can be gained by removing the panels on top of your unit if they can come off easily.

Sediment Buildup:

Sediment buildup can accumulate inside the tankless unit during use over time and can cause issues, even it leads to leakage from the unit itself which is can be very dangerous.

Make sure you can get it inspected at least yearly so any buildup can be cleaned before you can have problems with the unit itself leaking or failing which can lead to more issues for your home.

Acidic And Hard Water:

Acidic and hard water can cause tankless water heater leakage. You can avoid this problem by installing a water softener that can protect your unit from any leakage.

High Water Flow Rates:

High water flow rates are also a leading cause of leakage, also can damage the unit itself if not maintained properly. Make sure you’re not using too much pressurized water.

How To Inspect Tankless Water Heater Leakage?

There can be a few ways you can inspect for a tankless water heater leakage. So what can cause leakage? Well, any of the plumbing lines can potentially start leaking if there is an issue with them or can cause your unit to malfunction and can result in leakage too. It’s best to check each line until you find where the problem is coming from so it’s fixed right away.

Make sure all connections are tight to avoid this happening again down the road or make sure they are replaced entirely. You can also inspect the drip pan under the unit which can fill up with water over time as it heats up during operation, make sure it doesn’t overflow when checking for leaks because that will definitely lead to problems down the road.

How Can I Prevent A Tankless Water Heaters From Leakage?

There are many things that you can do on your own without hiring anyone that can help prevent your tankless water heater from leaking or breaking down completely if installed correctly, used properly and proper maintenance was carried out regularly.

Make sure to check out the following things in the cause of leakage.

  • Correct the Water flow rate
  • Check out the Water quality if it is hard or full of sediments, make sure to treat it.
  • Check out the pipelines and joints.
  • locate the ventilation if it is blocked or not.
  • Check out the inner pipes and heat exchangers if they are leak make sure to replace them.

What Should You Do In Case Of Leakage?

If you detect a leak, the best thing is to turn off the water heater and ask for help from an expert.

If your unit can’t hold pressure and it sounds like it is boiling or releasing hot steam then turn off the power immediately and call someone. If it vents too much steam then chances are this will damage the internal parts of the water heater.

Can A Tankless Hot Water Heater Explode?

A tankless hot water heater can explode due to high pressure that builds up inside if something goes wrong with the unit itself like a clogged drain line or hole in the tubing. Do not try to fix this yourself unless you are experienced at plumbing work.

Can A Tankless Water Heater Leak Out Dangerous Chemicals?

A little bit of water that can leak can contain some harmful minerals and chemicals in it so never use this water again once it has leaked out. To make sure you are not using any dangerous chemicals in your home always have your tankless water heater serviced every year to keep them running smoothly for years to come.

About Sami

Sami is also an Energy and Environmental Engineering graduate who has been working as a safety officer in a leading Fertilizer company for 18 months. He is also a graphic designer and marketing manager.

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