Can a leaking water heater be repaired?

It depends entirely on where. A leaking fitting, valve or connection is usually a repair. A leaking tank is not: the tank is a sealed steel vessel and once it has corroded through there is nothing to seal. That is why the first question is always where the water is coming from.

There is water coming out of a pipe on the side. Is that broken?

That pipe runs from the temperature and pressure relief valve, which is a safety device that opens if pressure or temperature climbs too high. It doing its job is not a fault in itself, but it means something made it open, and that is worth diagnosing.

How urgent is this really?

Urgent enough not to leave it overnight. Even a slow leak sits against flooring and drywall, and a tank that has begun to fail can go from a drip to a great deal of water quickly. Shutting the water off buys you time safely.

Is it worth replacing before it leaks?

If the unit is old and showing rust at the base or shorter hot water, planning a replacement is usually cheaper and far less disruptive than an emergency one, because you are not also paying to dry a floor.

Troubleshooting

Water Heater Leaking? What to Do Right Now

Where the water is coming from decides everything. Water dripping from a pipe or a fitting at the top is often repairable. Water coming from the bottom of the tank itself usually means the tank has rusted through, and a tank that leaks cannot be patched, only replaced. Either way, shut the water off to the heater and call. Water and a hot appliance are not a combination to leave overnight.

What to do right now

Find where the water is actually coming from before anything else. Dry everything, put paper towel down, and look again in an hour. Top of the tank and it is likely a fitting. Bottom of the tank, and it is likely the tank.
Shut off the water to the heater. There is usually a valve on the pipe entering the top. Turning it closes the supply without shutting off the whole house.
If it is an electric heater, switch off its breaker at the panel. If it is gas, turn the control to off. Do not leave a leaking heater powered.
Move anything that matters off the floor nearby. A tank that has started leaking can fail properly with little warning.
Call us rather than waiting for it to stop. A weeping tank does not recover, and choosing a replacement calmly beats choosing one at ten at night with water spreading.

Likely causes

The tank has rusted through from the inside. This is the serious one. Once the steel is perforated it cannot be repaired, and the leak only gets bigger.
The temperature and pressure relief valve, a safety valve on the side with a pipe running down from it, is releasing water. It is supposed to do that if pressure gets too high, so water there means something else needs checking.
A loose or corroded fitting where the water lines join the top of the tank, which is often a genuine repair rather than a replacement.
The drain valve near the floor is dripping, sometimes just from not being fully closed.
Condensation, which can look like a leak on a humid morning but dries up and leaves no growing puddle.

When to call a pro

If the quick fixes do not solve it, this is usually a water heater repair & replacement job. Liberty dispatches 24/7 with upfront pricing.

Water Heater Leaking? What to Do Right Now, FAQ

Can a leaking water heater be repaired?: It depends entirely on where. A leaking fitting, valve or connection is usually a repair. A leaking tank is not: the tank is a sealed steel vessel and once it has corroded through there is nothing to seal. That is why the first question is always where the water is coming from.
There is water coming out of a pipe on the side. Is that broken?: That pipe runs from the temperature and pressure relief valve, which is a safety device that opens if pressure or temperature climbs too high. It doing its job is not a fault in itself, but it means something made it open, and that is worth diagnosing.
How urgent is this really?: Urgent enough not to leave it overnight. Even a slow leak sits against flooring and drywall, and a tank that has begun to fail can go from a drip to a great deal of water quickly. Shutting the water off buys you time safely.
Is it worth replacing before it leaks?: If the unit is old and showing rust at the base or shorter hot water, planning a replacement is usually cheaper and far less disruptive than an emergency one, because you are not also paying to dry a floor.

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