<img height="1" width="1" style="display:none" src="https://www.facebook.com/tr?id=591165851039736&amp;ev=PageView&amp;noscript=1">


Jun 21, 2023 12:24:43 PM by Logan Donahue

5 Signs Your Water Heater Needs To Be Flushed

A well-functioning water heater is essential for providing hot water for daily activities such as bathing, washing dishes, and doing laundry. Over time, mineral deposits and sediment can accumulate within the tank, reducing its efficiency and potentially causing damage. Flushing your water heater regularly is a crucial maintenance task that helps to maintain its performance and prolong its lifespan. In this article, we will explore the signs that indicate your water heater needs to be flushed.

5 Issues That Tell You It's Time to Flush Your Water Heater

1. Discolored or rusty water

One of the most apparent signs that your water heater requires flushing is discolored or rusty water. When sediment builds up inside the tank, it can mix with the hot water, giving it a brown or reddish tint. This occurs due to the oxidation of minerals and corrosion within the tank. Flushing the water heater will help remove the accumulated sediment and restore clear, clean water flow.

2. Reduced hot water output

If you notice a decrease in hot water output or find that it takes longer for the water to heat up, it may be an indication that your water heater needs to be flushed. Sediment buildup acts as an insulating layer between the heating element and the water, reducing the heater's efficiency. Flushing the tank will eliminate the sediment, allowing the water heater to heat the water more effectively and restore its optimal performance.

3. Strange noises

Another sign that your water heater may need flushing is the presence of unusual noises coming from the tank. As sediment accumulates, it can harden and settle at the bottom. When the water heater operates, the heating element can cause the hardened sediment to rumble or make a popping sound. Flushing the water heater will remove the sediment and eliminate the source of the noise, restoring quiet operation.

4. Foul odors

If you detect a foul odor -- such as a rotten egg smell -- when using hot water, it could indicate that your water heater needs flushing. Bacteria present in the water can react with sediment and produce hydrogen sulfide gas, which has a distinct unpleasant odor. Flushing the tank will help eliminate the bacteria and sediment, ensuring clean and odor-free hot water.

5. Increased energy bills

A water heater burdened with sediment requires more energy to heat the water adequately. As a result, you may notice a sudden increase in your energy bills without a corresponding increase in hot water usage. Flushing the water heater will improve its efficiency, reducing energy consumption and helping you save money in the long run.

How to Flush Your Water Heater

If you find out that your water heater needs to be flushed, you can contact your local HVAC company or even follow specific steps to do it yourself.  Check out our 8-step guide below to learn how to do it yourself.8 Steps to Flushing Your Water Heater


Regular maintenance of your water heater is essential for optimal performance and longevity. Flushing the tank at least once a year, or as recommended by the manufacturer, can help prevent sediment buildup and maintain efficiency. By being aware of the signs that indicate the need for flushing, such as discolored water, reduced hot water output, strange noises, foul odors, and increased energy bills, you can take proactive steps to keep your water heater in excellent condition.
Consult your water heater's manual or seek professional assistance if you're unsure about the flushing process. Remember, a well-maintained water heater ensures a steady supply of hot water for your everyday needs.
Contact ECI Comfort

If you live in the Delaware Valley/Greater Philadelphia area and would like to find comfort within your home, visit our website or give us a call at 215 - 245 - 3200  to learn more.

This entry was posted in Tankless Water Heater, Water Heater

Contact Us

Popular Posts

Posts by Topic

see all