Water heater leaks are quite common and can cause significant damage if not repaired quickly. As the go-to company for quality water heater repair in Pasadena, MD, Priority Plumbing & Drain has serviced a lot of leaky water heaters that had turned so because of various reasons. Below, we discuss the most common causes.


Over time, water heater tanks will rust and deteriorate, eventually developing holes and cracks. While this can be delayed with regular maintenance, it is a natural effect of wear and tear. If you notice your water heater is starting to leak, it’s essential to have prompt repairs to avoid having to undergo a water heater replacement as soon as possible to avoid further damage.

A Faulty Pressure Relief Valve

The pressure relief valve is a safety feature that helps to release pressure build-up inside the tank and is a requirement for a tankless water heater. If this valve becomes damaged or stuck, it can cause water to leak from the tank. You can test your pressure relief valve by lifting the handle and letting go. If water shoots out, it’s working correctly.

A Loose Water Supply Line

Loose water supply lines can cause water to leak from the connections. To prevent this, ensure the fittings are tight and secure right from the water heater installation procedure and check them regularly for any signs of wear or damage.

A Faulty Thermostat

The thermostat helps to regulate the temperature of the water in the tank. If it becomes damaged, it can cause water to leak from the tank. You can test your thermostat by turning it up and down and listening for any clicking sounds. If you hear a click, it’s working correctly. If not, you’ll need to have it replaced. Tankless water heater maintenance requires the regular replacement of the thermostat as it’s an integral part of the system.

If you’re having issues with your water heater, call Priority Plumbing & Drain right away. We pride ourselves on customer service excellence–we’re always available to help with any plumbing needs you may have. Contact us today to schedule an appointment!