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What Does It Mean When Water Is Coming Out of a Water Heater?

Published in Water Heater Leak 3 mins read

When water is coming out of your water heater, it generally means there is a leak or malfunction requiring immediate attention.

A visible leak from the water heater is a clear sign of a problem. The location and nature of the leak can often point to the specific cause.

Common Causes of Water Leaks from a Water Heater

As mentioned in the provided reference, a visible leak from the top of the water heater tank may indicate several potential issues:

  • Leaking Connections: This is often the simplest cause. Water supply lines (hot and cold), fittings, or the pipe connecting to the tank itself can loosen or corrode over time, leading to drips or leaks.
  • Faulty TPR Valve: The Temperature and Pressure Relief (TPR) valve is a crucial safety device designed to release water and pressure if the tank's temperature or pressure becomes too high. If this valve is leaking or dripping constantly, it could mean the valve itself is faulty, or it could indicate excessive pressure within the tank. A dripping TPR valve should never be ignored.
  • Internal Component Deterioration: The water heater tank and internal parts can deteriorate over time, especially if the anode rod is not maintained or if sediment builds up. This can lead to cracks or corrosion within the tank itself, causing water to leak out. This is often a more serious issue and may indicate the end of the water heater's lifespan.

Other Potential Leak Locations

While the reference specifically mentions leaks from the top, water can also leak from other areas, such as:

  • The bottom of the tank: This can often indicate a leak in the tank itself, a drain valve issue, or internal corrosion.
  • The drain valve: The valve at the bottom of the tank used for draining can sometimes leak if it's old, damaged, or not closed properly.

Why is this a Problem?

Ignoring water coming out of a water heater can lead to:

  • Water damage to floors, walls, and belongings.
  • Increased water bills.
  • Potential safety hazards (electrical or pressure-related).
  • Eventual failure of the water heater.

It's important to identify the source of the leak quickly and address it. If you are unsure of the cause or uncomfortable attempting a repair yourself, it is best to contact a qualified plumber.

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