Have you ever wondered “why is my water heater leaking?” and then frantically tried to figure out what the next step was… all while watching water slowly (or not) making its way across your hall carpet?
If you’ve never found yourself in this situation, congratulations! The best way to avoid it is to know what to do in advance. Knowing the steps to take when your water heater is leaking is knowledge that every homeowner should have. Read on for some of the most common reasons a water heater is leaking.
1. The Age of Your Water Heater
Water heaters don’t last forever. Most units have a lifespan of 8–12 years, and as they age, internal components start to break down. Over time, the metal tank itself may corrode and weaken, leading to small leaks that can quickly turn into bigger problems. If your water heater is nearing the end of its life, it’s wise to call a professional for water heater service to inspect or replace it before things get worse.
2. Sediment Buildup
Hard water is a common issue in many Texas homes, and San Antonio is no exception. Over time, minerals in the water settle at the bottom of the tank, forming a layer of sediment. This buildup can cause the tank to overheat and crack or create pressure imbalances that lead to leaks. Regular flushing and maintenance can help prevent sediment-related issues, which is why scheduling routine water heater maintenance can save you a major headache down the line.
3. Cracked or Damaged Tank
Even a small crack in your water heater tank can result in a noticeable leak. Cracks may form due to internal pressure, age, or sudden temperature changes. These types of damages usually require replacement of the entire tank, as repairs aren’t often feasible. A licensed plumber can assess the extent of the damage and recommend the best course of action (which may be water heater repair).
4. Drain Valve Malfunction
The drain valve at the bottom of your water heater allows for routine maintenance like tank flushing. But if that valve becomes loose, worn, or fails entirely, it can cause water to seep or even spray from the base of the heater. Sometimes, tightening the valve can fix the issue, but in many cases, the valve will need to be replaced. This is a relatively simple fix for an experienced plumber, but one you shouldn’t ignore.
5. Inlet or Outlet Connection Leaks
The points where water enters and exits your heater—the inlet and outlet connections—are also potential leak sources. Over time, these connections can loosen or the surrounding pipes can corrode, leading to water leaks around the top of your unit. Checking these fittings regularly or having a plumber inspect them as part of your annual maintenance can help you catch small issues before they turn into major ones.
What Should You Do if You Notice a Leak?
- Turn off the power to your water heater. If it’s electric, shut off the breaker; if it’s gas, turn the gas valve to the off position.
- Shut off the water supply to stop the flow into the tank.
- Clean up any standing water to prevent damage to flooring and walls.
- Call a licensed professional. Don’t try to DIY a fix—an expert can quickly pinpoint the problem and offer the safest, most cost-effective solution.
At the first sign of trouble, reach out to a trusted plumber for fast, professional help. Whether it’s a minor fix or a full replacement, expert water heater service ensures your home stays safe and dry.
Need water heater service in San Antonio? Shafer Services delivers fast, reliable plumbing—whether it’s a quick fix or full replacement. Contact us today to schedule your water heater inspection.