How Often Should You Flush Sediment From a Water Heater?
Why Sediment Builds Up
Minerals naturally present in water — especially in hard water areas — settle at the bottom of a tank water heater over time, reducing efficiency and, in more severe cases, causing popping/rumbling noises and accelerated tank wear.
Recommended Flush Frequency
In hard water areas, an annual sediment flush is commonly recommended. In areas with naturally softer water, every 1-2 years may be sufficient.
Units that have never been flushed and are showing noise or reduced hot water output may benefit from professional flushing regardless of the general schedule.
Benefits of Regular Flushing
Regular sediment flushing helps maintain efficiency, reduces strain on the heating element or burner, and can meaningfully extend the tank’s usable lifespan.
Ready to Get Connected With a Local Pro?
Tell us what you need and your location — we’ll route your request to a licensed local water heater professional.
Frequently Asked Questions
Can I flush my water heater myself?
It’s possible for some homeowners, but incorrect technique can cause issues with older valves or fittings — a specialist can perform it safely and check the rest of the unit while there.
How do I know if my water is considered hard?
Signs include mineral spots on fixtures, reduced soap lathering, and visible scale buildup on faucets. Many water utilities also publish local hardness data.
Related Services
You May Also Want to Read
How Long Does a Water Heater Really Last?
Average lifespans for tank and tankless water heaters, and the factors — like water hardness and maintenance — that shorten or extend them.
Read guide