A hot water heater leaking can be more than just a nuisance – it can signal serious plumbing issues, increase utility bills, and even cause water damage to your home. If you have noticed puddles around your tank or a drop in water temperature, you need to act quickly. In this blog, we will explain the common causes behind hot water heater leaks, how to prevent them, and what to do if you spot a leak. Whether you are a homeowner or managing a commercial property, these insights will help you make informed decisions and protect your investment.
Common Causes of a Hot Water Heater Leaking
- Loose or Corroded Drain Value
The drain valve is located near the bottom of your water heater and is used to flush out sediment. Over time, it can become loose or corroded.
- Quick fix: Try tightening the valve with a wrench.
- Long-Term Solution: If corrosion is present, the valve may need to be replaced by a professional.
Even a slow drip from this area can cause moisture build up and rust on surrounding materials.
- Temperature and Pressure Relief (T&P) Valve Problems
The T&P valve is designed to release excess pressure. If it is malfunctioning, you might notice a hot water heater leaking from the side.
- Signs of Trouble: A steady leak or moisture around the valve.
- What to Do: Replace the valve promptly. This is a safety feature and should never be ignored.
If this valve is releasing water frequently, it may indicate dangerously high pressure or water temperature inside the tank.
- Internal Tank Corrosion
Over time, sediment builds up inside your tank, causing rust and eventual leaks. This is a common cause of tank failure, especially in older units.
- Preventive Tip: Flush your tank once or twice a year to remove buildup.
- Solution: If the interior tank is corroded, replacement is the only option.
Once corrosion has compromised the tank well, no patch or sealant will provide a long-term fix.
- Cracked or Loose Inlet/Outlet Connections
These are the pipes where cold water enters and hot water exits the heater. Movement or wear can lead to leaks.
- Fix Tip: Tighten the connection or replace worn-out fittings.
Vibrations from water flow or thermal expansion can cause fittings to come loose over time.
- Aging Water Heater
Most water heaters last between 8-12 years. As they age, parts begin to fail, making leaks more likely.
- Check the Age: Look at the manufacturer’s sticker.
- When to Replace: If your unit is nearing the end of its life, replacement might be the most cost-effective solution.
Older units also tend to operate less efficiently, driving up your utility bills in the process.
How to Prevent a Leaking Water Heater
Prevention is always better (and cheaper) than emergency repairs. Here is how to reduce the risk of a leak:
Schedule Annual Maintenance
Professional maintenance can catch small issues before they turn into big problems.
- Flush the tank to prevent sediment buildup
- Test the T&P valve
- Inspect the anode rod
- Check all fittings and valves
A licensed technician will also check the thermostat and heating element for signs of wear.
Install a Leak Detection System
Modern systems can alert you to water leaks and even shut off water automatically.
- Smart home integration available
- Minimizes water damage
- Great for properties left unattended for long periods
Many models include Wi-Fi alerts, making them perfect for vacation homes or busy homeowners.
Monitor Water Pressure
High water pressure can strain your system. Install a pressure-reducing valve if needed.
- Ideal water pressure: 40-60 PSI
- Anything above 80 PSI is too high
Too much pressure can cause not just leaks, but even tank explosions in extreme cases.
Replace the Anode Rod
The anode rod protects the tank from rusting by attracting corrosive elements.
- Check every 2-3 years
- Replace when more than 50% is corroded
This simple replacement can extend the life of your water heater by several years.
What to Do If Your Hot Water Heater Is Leaking
If you discover a leak, follow these steps:
- Turn Off the Power
- Electric water heater: shut off the breaker
- Gas water heater: turn off the gas valve
- Shut Off the Water Supply
Use the shut-off valve located on the cold-water pipe above the tank
- Drain the Tank
Attach a hose to the drain valve and direct it to a safe drainage area
- Call a Licensed Technician
A professional can inspect the unit, make necessary repairs, or recommend a replacement.
Never attempt to open the tank or replace internal parts without proper knowledge. Mishandling a water heater can lead to electric shock, burns, or gas leaks.
When to Call a Professional
While minor issues like a loose drain valve may be manageable, most water heater problems should be handled by a licensed plumber or HVAC technician. If your hot water heater is leaking, it is crucial to get an expert evaluation to avoid safety hazards and costly repairs. Even seemingly small leaks can point to much larger problems within the system.
Need Help with a Leaking Water Heater in Central Arkansas? Contact Central Arkansas Service Company Today
If you are dealing with a hot water heater leaking or want to take preventive action, trust the experts at Central Arkansas Service Company (CASC). Located in North Little Rock and serving all of Central Arkansas, we specialize in residential and commercial heating, cooling, and plumbing services – including maintenance, repairs, and new installations.
With decades of combined experience and a reputation for fast, friendly service, our team is here to keep your home or business running smoothly. Get peace of mind with our free quotes and professional workmanship. Call us at (501) 307-1310 or email brandon@centralarservice.com to schedule your service today.