Water Heater Leaking? What It Means and What to Do Right Now
Serving Cleveland's west side & west suburbs · 24/7 emergency drain service · Call (216) 203-6563
Water Heater Leaking? What It Means and What to Do Right Now
Water around your water heater? Here's how to find where the leak is coming from, what to do right now, and when the tank needs to be replaced.
Turn off the heater's power or gas, close the cold supply valve and move belongings. Leaks from the top connections, relief valve or drain valve are usually repairable; water coming from the bottom of the tank itself means the heater needs to be replaced.
Finding water around your water heater is stressful — but not every leak means a new heater. The key is figuring out where the water is coming from.
What to do right now
- Turn off the power. Gas heaters: set the gas control to "Pilot" or "Off." Electric heaters: turn off the breaker.
- Shut off the cold water supply — the valve on the pipe going into the top of the heater.
- Protect your belongings. Move boxes and anything on the floor nearby.
- If water is pouring out, connect a garden hose to the drain valve at the bottom and run it to a floor drain to empty the tank.
- Call us at (216) 203-6563. We handle water heater leaks every day across Cleveland's west side.
Where is the water coming from?
From the top
Leaks at the top usually come from the cold or hot connections, a loose fitting or the relief valve threads. These are almost always repairable.
From the relief valve or its discharge pipe
The temperature & pressure relief valve opens when pressure or temperature is too high. A drip here can mean a worn valve — or high water pressure or a missing expansion tank. Don't cap or plug this valve; it's a safety device.
From the drain valve
A slow drip from the valve near the bottom is usually the valve itself. It can be tightened, capped or replaced.
From the bottom of the tank
This is the one nobody wants. If water is coming from under the tank and not from a valve or fitting, the inner tank has usually corroded through. A leaking tank cannot be repaired — the heater needs to be replaced.
Condensation (not a leak)
A new heater or one heating very cold winter water can sweat a little, especially on gas units. It should stop once the water is hot. If it doesn't, have it checked.
Why tanks leak
Tanks corrode from the inside. The anode rod is designed to corrode first and protect the tank, but once it's used up, the steel goes next. Sediment and high water pressure speed it along. That's why most tank leaks show up after 8–12 years.
Don't wait on a small leak
A slow drip from the bottom of a tank can turn into a burst with little warning, putting 40–50 gallons on your basement floor. If your tank is leaking, plan the replacement now. We can usually install a new water heater the same day.
What a water heater leak can damage
A tank holds 40 to 75 gallons, and the supply line keeps refilling it as it leaks. Left alone, a leak can soak drywall, flooring, stored belongings and furnace equipment nearby. That's why it pays to:
- Keep the area around the heater clear of boxes and storage
- Install a drain pan with a line to a floor drain where possible
- Consider a water leak sensor or alarm near the heater
- Know where your main water shut-off is before you need it
When to call a plumber
Call ExpertPipe Rooter at (216) 203-6563 if:
- Water is coming from the bottom of the tank
- The relief valve keeps dripping or discharging
- You can't find the source of the water
- The leak is getting worse or the heater is old
We serve Cleveland's west side and western suburbs, including Lakewood, Parma, Westlake, Rocky River and North Olmsted.
Frequently asked questions
Is a leaking water heater an emergency?
A small drip from a valve isn't an emergency, but water from the bottom of the tank can turn into a sudden failure. Shut off the water and power and call for service the same day.
Why is water coming out of the relief valve pipe?
The temperature and pressure relief valve opens when pressure or temperature is too high, or when the valve is worn. High water pressure or a missing expansion tank are common causes. Never cap this valve.
Can I keep using a leaking water heater?
If the tank itself is leaking, no — shut it down and plan a replacement. If a fitting or valve is leaking, it can usually be repaired.
Keep reading
Related guides
Water Heater Repair or Replace? A Simple Guide for Cleveland Homeowners
Repair makes sense on a heater under about 8 years old with a dry tank and a failed part like a thermocouple, gas valve, element or relief valve.
Read the guide →Basement Flooding? What to Do Right Now (Cleveland Emergency Guide)
Stay out of water near electricity, shut off the main water valve if a pipe burst, stop using water if the floor drain is backing up, then call a plumber.
Read the guide →How Long Do Water Heaters Last in Cleveland? 7 Signs It's Time to Replace
Most tank water heaters in Cleveland last 8–12 years; tankless units often reach 20.
Read the guide →Talk to a local plumber
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