Should I flush my water heater and how often?

Yes, you should flush your water heater annually to remove sediment buildup that reduces efficiency and shortens the unit's lifespan. This is one of the most important maintenance tasks for extending your water heater's life.

Sediment accumulation happens naturally as minerals in Ottawa's water supply settle at the bottom of your tank over time. This buildup acts like an insulating blanket, forcing your water heater to work harder to heat water, which increases energy costs and can cause premature failure. The sediment also creates hot spots that can damage the tank lining and heating elements.

The flushing process involves connecting a garden hose to the drain valve at the bottom of your tank and draining several tank-fulls of water until it runs clear. However, this isn't as simple as it sounds - the water is scalding hot, the drain valve can be corroded or difficult to operate, and improper technique can damage your unit or create flooding.

In Ottawa's hard water areas, you might need flushing every 6-8 months rather than annually. Signs your water heater needs attention include rumbling or popping noises, reduced hot water capacity, rusty or cloudy hot water, or higher energy bills. If your water heater is over 8 years old and has never been flushed, the sediment may be so compacted that flushing could actually cause leaks by disturbing the settled material.

For most homeowners, professional maintenance is the safer choice. A licensed plumber can properly flush your system, inspect the anode rod, check for leaks, and identify potential problems before they become expensive repairs. For a free consultation about water heater maintenance or replacement, request a quote from Ottawa Pro Plumbing.

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