Why Is Your Water Heater Leaking?

A leaking water heater is a massive red flag that repairs are necessary. There are several reasons why a water heater could leak. From age to pressure, a leaking heater poses a much bigger danger to your home than water damage.

Here’s a look at why your water heater is leaking and what you should do the instant you notice a problem.

5 Reasons Your Water Heater is Leaking

Your Tank is Old

Your tank-style water heater has a 15-year shelf life. Once the years catch up with it, even with great maintenance, rust can form in the tank. Rust causes corrosion which leads to leaks.

Age also plays a role in some of the other technical problems we’ll get into later.

Once your water heater goes beyond its prime, replacing it is your only viable option.

A Loose Drain Valve

During maintenance, plumbers use the drain valve to empty your tank. Your valve can loosen over time and water can begin to leak from your tank.

If you notice water leaking from the bottom of your valve, a licensed plumber can easily replace the part.


Sediment that collects over the years can create cracks in your water heater’s tank. Any tank leak means it’s time to replace your water heater. So, prevent this issue with regular water heater maintenance from a licensed plumber.

Loose Inlet and Outlet Connections

Your inlet and outlet connections are what bring hot water into your home. These connections can loosen and create leaks. In most cases, you could use a wrench to tighten the connections. However, if a problem persists, you should always contact a reliable plumber.

Failed Pressure Relief Valve

Your tank’s temperature and pressure relief valve keeps your water heater’s pressure under control. If this valve fails, pressure builds up and eventually leads to leaks.

This problem is the biggest reason why you should always have a plumber examine any leak. If too much pressure builds up, your water tank could explode, creating a life-threatening situation for you and your family.

What Should You Do If Your Water Heater Is Leaking?

Finding a leak is part of the solution. Here’s what you need to do once you realize you have a problem.

Turn Off Water Supply

Prevent further pressure and property damage. Turn off your tank’s water supply. You can do this with a valve attached to your water heater. If that doesn’t work, you will need to turn off the main water supply to your home.

Turn Off Power to Your Water Heater

If gas powers your water heater, shut off the gas supply before any further tank inspections. You can find the gas shut-off valve near the base of your water tank.

If you have an electric water heater, shut off its power breaker before looking for the source of your leak.

Call a Local Plumber

A qualified plumber can find the source of your leak and make necessary repairs. If replacement is necessary, a plumber can help you find the right water heater for your home.

Water heater issues are unpredictable and serious. It’s always best to have a plumber check out any leaks spouting from your equipment.

Plumbing Dynamics is On-Call When Your Plumbing Needs Us

If you have a water heater leak, reach out to the experts at Plumbing Dynamics. We’ve seen and fixed it all! Let us assess your situation and help you find an affordable long-term solution.

Schedule your appointment with one of our plumbers today!