Tank Leaks – How to Spot, Stop, and Repair Them

If you’ve noticed water pooling around your water heater, boiler, or any large appliance, you’re probably dealing with a tank leak. Leaks can turn a simple inconvenience into a costly flood if you ignore them. The good news? Most tank leaks show clear signs, and many can be fixed quickly with the right tools and a bit of know‑how.

Common Signs of a Tank Leak

The first step is to recognize the warning signals. Look for moisture or discoloration on the floor beneath the tank, a steady drip from the top or bottom, or a sudden drop in water pressure. Rust stains, a musty smell, or puddles that appear after you run the hot water are also red flags. If you spot any of these, turn off the power or gas supply and shut the water valve to prevent further damage.

DIY Fixes and When to Call a Pro

For small leaks, a simple tighten of a loose fitting or a replacement of a worn‑out gasket can do the trick. First, drain the tank by attaching a hose to the drain valve and letting the water flow out. Once the tank is empty, inspect the valve, pipe connections, and the tank’s top vent. Replace any cracked or corroded parts with ones recommended by the manufacturer. Re‑fill the tank, turn the power back on, and watch for any new drips.

When the leak comes from the tank itself—like a crack in the steel or a corroded interior—you’ll need a professional. Trying to weld or seal a cracked tank yourself can be dangerous and often violates warranty terms. A qualified technician can assess whether the tank can be repaired or if a full replacement is more cost‑effective.

Regular maintenance helps catch leaks before they become emergencies. Check the pressure‑relief valve annually, flush the tank to remove sediment, and keep the area around the appliance clean and dry. A quick visual inspection every few months can save you from a surprise flood and an unexpected repair bill.

If you’re ever unsure, don’t hesitate to call us at Wells Appliance Repairs. Our team knows the ins and outs of water heater, boiler, and other tank‑type appliances. We’ll diagnose the problem, give you a clear quote, and fix the leak fast—so you can get back to normal life without worrying about water damage.

Bottom line: a tank leak isn’t something to ignore. Spot the signs early, try simple fixes if you’re comfortable, and trust a pro when the tank itself is compromised. With the right approach, you’ll keep your home dry and your appliances running smoothly.