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Your Water Heater Needs A Flush Now And Then: Here’s How

The water heater is an appliance you give very little thought to until something goes wrong. With annual preventative maintenance, you can put off that day and enjoy ample hot water for years to come.

To ensure continued energy efficiency and an ample hot water supply, plan to flush out your water heater every now and then, such as every fall when your hot water demand is about to rise.

The reasons for periodic flushing:

    • To get rid of mineral deposits that collect at the unit’s base
    • To promote quality heat transfer from the burner to the tank
    • To prevent corrosion and extend the equipment’s lifespan

How it’s done

    • Turn off the gas valve or electric power (depending on the fuel source) and let the water cool down.
    • Shut off the water inlet valve and attach a hose to the drain valve at the base of the tank. Position the other end of the hose to a drain, large bucket, or outside.
    • Open the drain valve, turning on one hot water faucet in the home to let air enter the tank.
    • Once the water has fully drained, turn the cold water valve on and off until the water leaving the hose runs clear.
    • Close the drain valve, open the water inlet valve, and turn the gas or electricity back on. (If applicable, relight the pilot.)
    • While you’re at it, test the temperature-pressure relief valve, which is what keeps pressure from building up too high within the water heater. All this requires is that you open the valve slightly. If water drains from the overflow pipe, the temperature-pressure relief valve is in working order.

Many people only schedule annual preventative maintenance for their air conditioner or furnace, but water heater maintenance should be included in that inspection as well. A technician can flush your system for you and perform other important maintenance tasks as well.

For more information about taking care of your water heater, please contact Wolff Mechanical today. We provide quality HVAC services to the Phoenix and Scottsdale area.

Our goal is to help educate our customers in the Phoenix Valley area of Arizona about energy and home comfort issues (specific to HVAC systems). 

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