12470 Armand Way, Woodbridge, VA, 22192
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When you turn on the tap, expecting a stream of warm water for your morning shower or to wash the dishes after dinner, the last thing you want is cold water splashing into your hands. A water heater is one of the most essential appliances in a home, yet it’s often taken for granted—until it stops working. Whether it’s a sudden breakdown or a gradual decline in performance, a faulty water heater can be frustrating and disruptive. However, understanding what might have gone wrong and knowing how to address the issue can help you restore hot water to your home more quickly and safely.
One of the first things you should do when your water heater stops working is to check the power or fuel source. It may sound simple, but it’s surprising how often the problem is as basic as a flipped breaker or an extinguished pilot light.
Sometimes the issue could be as simple as a thermostat that’s set too low. Most water heaters allow you to adjust the temperature, and if the setting has been inadvertently turned down, you might not be getting hot water even though the heater is functioning properly. For most homes, the recommended temperature setting is around 120°F (49°C). Check the thermostat on your heater and make sure it’s properly adjusted. If changing the setting doesn’t help, the thermostat itself might be faulty and in need of replacement.
If your electric water heater is still not working after resetting the breaker and checking the thermostat, the problem might be with the heating elements. Electric water heaters typically have two heating elements (upper and lower). Over time, these elements can burn out, reducing the heater’s ability to warm water efficiently.
To test the heating elements, you’ll need a multimeter. Turn off the power to the water heater and remove the access panels to expose the heating elements. Use the multimeter to check for continuity. If one or both of the elements are faulty, they’ll need to be replaced.
For gas water heaters, a common issue is a malfunctioning burner. Sediment buildup at the bottom of the tank can impede the burner’s efficiency, reducing its ability to heat water. Regularly flushing your tank can help prevent this issue. If the burner is damaged or corroded, it may need to be cleaned or replaced.
Leaks and corrosion can significantly affect the performance of your water heater. A leaking water heater not only wastes water but also indicates serious issues, such as corrosion or cracks in the tank. Inspect the area around your water heater for any signs of water leakage. Look at the pressure relief valve and the connections to the tank.
If you find corrosion or rust on the tank, this is usually a sign that the tank is nearing the end of its lifespan. While some parts, like the anode rod, can be replaced to prolong the life of the heater, a corroded tank often requires full replacement. A leaking tank, especially due to corrosion, should be addressed immediately as it can cause significant water damage to your home.
The pressure relief valve is a safety device designed to release excess pressure from the water heater if the temperature or pressure inside the tank becomes too high. Over time, these valves can become faulty, either leaking water or failing to open when needed.
To test your pressure relief valve, place a bucket under the discharge pipe connected to the valve. Lift the valve’s lever slightly—hot water should rush out through the discharge pipe. If no water flows, or if the valve continues to leak after testing, it will need to be replaced.
Sediment buildup inside the tank is a common cause of water heater issues, especially in areas with hard water. Over time, minerals in the water settle at the bottom of the tank, creating a layer of sediment that reduces heating efficiency and can even cause your water heater to overheat.
Flushing your water heater regularly can help prevent sediment buildup. To do this, turn off the power or gas to the heater, attach a garden hose to the drain valve at the bottom of the tank, and drain the tank into a suitable location, such as a floor drain. Once the tank is empty, briefly open the water supply to stir up any remaining sediment and allow it to drain out. This process can help extend the life of your heater and improve its performance.
While some water heater problems can be resolved with basic troubleshooting and maintenance, there are times when calling a professional is the safest and most effective option. If you’ve checked the power, thermostat, heating elements, and pressure valve, and the problem persists, there may be more serious underlying issues, such as internal tank failure or electrical wiring problems.
Additionally, if your water heater is over 10-15 years old and is frequently malfunctioning, it may be time to consider replacing the unit. A licensed plumber can help you assess the condition of your water heater and recommend the best course of action.
A malfunctioning water heater can disrupt your daily routine, but by systematically addressing the most common causes—such as power issues, faulty heating elements, and sediment buildup—you can often restore hot water quickly. However, when the problem becomes more serious or complex, it’s best to consult an expert. For professional water heater repairs or replacements, contact Calix Plumbing, where our experienced team is ready to get your hot water back up and running efficiently.
