Certain things should be, for the most part, seen and not heard. Your water heater is a prime example. Tucked away in your basement or a closet, your water heater works silently day and night to provide you with a steady supply of hot water when you need it. If it starts making strange noises, it can be more than just an annoyance; it could be a sign of an underlying issue that needs attention. Different sounds can indicate different problems, and understanding these can help you determine the best course of action.
Here are 5 common reasons your water heater might be making noises and what you can do about them.
1. Sediment Buildup
One of the most common causes of noise in water heaters is sediment buildup. Over time, minerals from hard water settle at the bottom of the tank. When the burner heats the water, the sediment can create popping, banging, or rumbling sounds as it is displaced by the heating process. Flushing your water heater can help remove the sediment.
2. Water Hammer
Water hammer is a loud banging noise that occurs when water suddenly stops or changes direction in the pipes. This can happen if you quickly shut off a tap or if the water heater’s check valve is malfunctioning. Install water hammer arrestors on your plumbing system to absorb the shock wave created by sudden water flow changes. Additionally, check your water pressure and ensure it is within the recommended range (usually 40-60 psi).
3. Expansion and Contraction
As the metal tank and pipes heat and cool, they expand and contract, which can create ticking or tapping noises. This is usually normal but can be annoying. While there’s not much you can do to eliminate this noise completely, ensuring your water heater is installed correctly and securely can minimize it. If the noise is excessive, consult a professional to check for any loose or improperly installed components.
4. Loose Heating Element
In electric water heaters, the heating element can loosen over time, causing a humming or vibrating noise. Turn off the power to the water heater and check the heating element. Tighten it if necessary, but if you’re not comfortable doing this, call a professional.
5. Sediment on the Heating Element
In electric water heaters, sediment can also accumulate on the heating element, causing a sizzling noise when it heats up. Similar to the sediment buildup solution, you can flush the tank. If the heating element is coated in sediment, you might need to clean or replace it.
When to Call a Professional
While some noise issues can be resolved with DIY maintenance, there are times when you should call a professional:
- If you’re not comfortable performing maintenance tasks yourself.
- If the noises persist after you’ve flushed the tank or addressed other potential causes.
- If you suspect a serious issue, such as a cracked tank or a malfunctioning valve.
If you’re hearing unusual noises or experiencing any other issues with your water heater, contact Eagle Service Company today. We service, repair, and install all makes and models of tank-style and tankless water heaters so you can enjoy the steady supply of hot water whenever you need it.
