What to Do When Your Water Heater Is Leaking

According to Ecosmart, water heater failures account for around 20% of all residential water loss incidents, with many stemming from slow leaks or sudden bursts. These failures can lead to repair costs averaging $4,444, making early detection crucial for preventing damage and high expenses.

If you’re noticing signs of your water heater leaking, you may wonder what steps to take. Today, we’re taking a closer look into what causes these leaks, immediate actions you can take, and when to consider professional help to minimize the impact on your home and wallet.

Signs You Have a Water Heater Leaking

Identifying a leaking water heater early can save you from major water damage and costly repairs. Here are the three most common signs that may point to a water heater leaking:

• Visible Water Around the Tank
• Rust or Corrosion on the Tank
• Unusual Sounds or Smells

Visible Water Around the Tank

One of the first indicators of a leaky water heater is water pooling around the tank. It may happen for various reasons, including loose connections, faulty valves, or a more significant internal issue with the tank itself. Even small puddles or damp areas should be addressed immediately, as they can worsen over time.

Rust or Corrosion on the Tank

If you see rust or corrosion forming on the tank or its connections, this could mean the heater has a leak. Corrosion tends to appear on the exterior of older water heaters or around pipes and valves, where moisture can slowly degrade the metal. When rust forms on the heater’s tank, it often means the interior lining has started to fail.

Unusual Sounds or Smells

Water heaters sometimes produce hissing or popping sounds, especially when there’s sediment buildup or minor leaks. You may also notice unusual odors, particularly if the leak has allowed bacteria to develop in the stagnant water around the heater. The signs might indicate that repairs or replacements are needed to avoid further issues.

Common Causes of a Leaky Water Heater

A leaky water heater can result from several common issues. Understanding these causes helps you know when to address minor problems or call for repairs. Here are three primary reasons a water heater might start leaking:

• Damaged or Old Tank
• Faulty or Worn Out Valves
• Loose or Corroded Connections

Damaged or Old Tank

The tank itself is often the source of leaks, especially as the heater ages. Over time, sediment can build up at the bottom, causing the tank to corrode. This sediment buildup weakens the tank, which eventually can lead to cracks or holes. Older tanks are particularly prone to this issue, as years of use increase the likelihood of corrosion and leaks.

Faulty or Worn Out Valves

Valves play a critical role in controlling water flow and pressure inside the heater. Two common culprits are the temperature and pressure relief valve and the drain valve.

If these valves wear out or become damaged, they may allow water to leak out. Temperature and pressure relief valves, which release excess water when pressure is too high, can fail over time, causing a constant drip or even a larger leak.

Loose or Corroded Connections

Another common source of water leaks is loose or corroded connections where water enters and exits the tank. The connections can deteriorate, particularly in hard water areas where mineral deposits are high.

As pipes and fittings corrode, they may loosen, creating leaks around the connection points. In some cases, tightening or replacing these fittings may solve the problem, though persistent leaks could indicate more serious tank damage.

Initial Steps to Take When You Discover a Leak

First, turn off the water supply to the heater. This will stop any additional water from entering the tank and reduce the risk of further leaks. You can usually do this by locating the shutoff valve near the cold water inlet pipe and turning it clockwise until it stops.

Next, cut the power to the heater. For electric heaters, switch off the breaker in your electrical panel. For gas heaters, turn the gas supply off by finding the control knob and setting it to “off.”

It prevents the heater from heating an empty or partially filled tank, which could lead to serious damage or even an electrical hazard.

Finally, dry the area around the heater to prevent water damage. Use towels or a mop to absorb any water that may have spilled.

It helps prevent slip hazards and limits the chance of mold or mildew developing. By following these steps, you can address the immediate issue and prepare for the next steps in water heater repair.

When to Call Professional Plumbing Services

Sometimes, a leaky water heater needs more than a temporary fix. Knowing when to call a plumber can save you from worsening the issue or facing costly repairs later.

If the tank itself has visible cracks or corrosion, it’s usually best to seek professional help right away. Internal damage to the tank often indicates that the heater’s structure is failing, and this type of problem will likely require a replacement.

Another sign to call a plumber is if you’ve tried basic fixes like tightening connections or replacing a faulty valve, and the leak persists. Persistent leaks may signal deeper issues with the unit’s internal components or connections, which a professional can assess accurately.

Finally, if you notice any unusual sounds, strong odors, or recurring issues with your water heater’s temperature and pressure relief valve, it’s wise to contact plumbing services. A professional can troubleshoot complex problems and ensure the repair or replacement is handled safely, preventing more severe water damage in your home.

Fixing Water Leaks

Addressing a water heater leaking quickly can help prevent further damage and costly repairs.

At Plumbing Outfitters, we’re committed to high standards, skill, and integrity. Founded by Master Technician Warren, our team has grown to over 21 skilled professionals. With over 50 years of combined experience, we handle every job with precision, respect, and professionalism.

Get in touch today to find out about our punctual service, competitive rates, and reliable solutions.

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