What to Do If Your Water Heater Is Leaking - Greenwell Plumbing, Heating, Air

A leaking water heater is more than just an inconvenience. It poses serious safety risks and can cause significant property damage in a short amount of time. Left unaddressed, even a tiny leak can lead to flooding, mold growth, electrical hazards, and costly repairs.

If you discover your water heater leaks, taking immediate action is crucial. Start by locating the emergency shutoff valve to stop the water flow and minimize damage. For gas water heaters, turn off the gas supply; for electric models, switch off the power at the circuit breaker.

Below, we’ll discuss identifying a water heater leak, the essential steps to take in an emergency, and when to call for emergency water heater repair.

How Do I Know If My Hot Water Heater Is Leaking?

It might seem obvious when your water heater leaks, especially if you see water pooling around the unit. However, some leaks are subtle and easy to miss until they cause significant damage. Here are some key signs to look out for:

Obvious Signs of a Water Heater Leak

Water pooling at the base: If you notice standing water near your water heater, it indicates a leak. While some condensation around the tank is normal, consistent pooling is a red flag your water heater may be leaking from the bottom.
Damp walls or flooring near the heater: Moisture buildup in nearby walls, flooring, or adjacent appliances can signal a slow leak. Over time, this can lead to mold growth and structural damage.
Dripping water from pipes or valves: Water connections at the top of the heater, including inlet and outlet pipes, can develop leaks due to wear and tear or improper installation. Even a slow drip can escalate into a more significant issue if ignored.

Subtle Signs That Indicate a Leak

A sudden spike in your water bill: If your water bill has increased without a noticeable change in usage, it could mean water is leaking from your system. Even a slow leak can waste gallons of water and increase costs.
Rusty water: If your hot water appears brown or rusty, it may indicate internal corrosion in the tank. This often means that the tank is deteriorating, eventually leading to leaks.
Strange noises: If you hear popping, rumbling, or cracking sounds from your water heater, it could mean sediment buildup inside the tank. This buildup forces the unit to work harder, increasing internal pressure and the risk of leaks.

Common Causes of Water Heater Leaks

Loose connections: Valves and pipes can loosen due to pressure changes and regular wear and tear.
Sediment buildup: Over time, minerals in the water collect at the bottom of the tank, causing overheating and leaks.
Corrosion: An aging tank may rust through, leading to small leaks that worsen over time.
Pressure relief valve failure: The temperature and pressure relief valve prevents excessive pressure buildup, but a faulty valve may continuously release water, mimicking a leak.
Cracked or damaged tank: Excessive pressure, aging, or defects can cause small tank cracks, allowing water to seep and worsen over time.

How to Fix a Leaking Water Heater

If you discover that your water heater is leaking, follow these steps immediately to minimize damage:

1. Turn Off the Water Heater

For gas heaters, turn the thermostat to the “off” position. For electric heaters, switch off the circuit breaker at your electrical panel.

2. Shut Off the Water Supply

Find the water heater emergency shutoff valve, typically located near the top of the unit. Turn it clockwise to stop the water flow. If the leak is severe and you can’t find the shutoff valve, turn off your home’s main water supply.

3. Drain the Tank (If Necessary)

If water continues to leak, you may need to drain the tank. Connect a garden hose to the drain valve at the bottom and run the hose to a nearby drain or outside. Open the valve carefully to release the water.

4. Check for the Leak Source

If the drain valve leaks, try tightening or replacing it if it’s faulty.
Excess pressure might be the issue if the pressure relief valve leaks. Call a professional if adjusting it doesn’t help.
If the tank itself is leaking, you likely need a replacement.

5. Consider DIY Fixes for Minor Issues

For minor leaks, you might be able to perform a quick repair:

Tighten loose pipe fittings with a wrench.
Flush the tank to remove sediment buildup and prevent further issues.
Replace a faulty pressure relief valve if it continues to drip.

If the leak persists or worsens, it’s time to call for emergency water heater repair.

Emergency Hot Water Heater Repair in Louisville

Some leaks require immediate attention from an emergency plumber. If you notice any of the following, call Greenwell right away:

A major leak or flooding: A burst water heater can flood your home within minutes.
No hot water: If your heater has stopped working altogether, it may need urgent repairs.
Signs of corrosion or rust: If your tank is deteriorating, replacement may be necessary.
Unusual noises: Persistent rumbling or banging can indicate severe internal damage.

The Greenwell Water Heater Repair & Replacement Process

When you call Greenwell for emergency repairs, our licensed technicians will:

Inspect your water heater: We’ll identify the exact source of the leak and assess the condition of your unit.
Provide a clear repair plan: We’ll perform a fast and effective repair if your heater can be fixed.
Recommend a replacement (if necessary): If your unit is beyond repair, we’ll help you choose an energy-efficient replacement.
Handle installation and disposal: We’ll install the new heater and safely remove your old one.
Offer warranty support: We back our work with warranties and ongoing support for your peace of mind.

Don’t ignore a leaking water heater. Quick action prevents damage and keeps your home safe. For expert emergency water heater repair in Louisville, Columbus, and Kentuckiana, contact Greenwell today for fast, reliable service.