Water Heater Maintenance Tips

In this article, you'll learn:

• Annual maintenance—like flushing the tank, testing the T&P relief valve, and setting the temperature to 120°F—keeps your water heater safe, efficient, and reliable during winter.

• Replacing the sacrificial anode rod and clearing combustibles around gas units helps prevent corrosion, safety hazards, and premature system failure.

• Scheduling a professional tune-up each year can catch small issues early, extend the unit’s lifespan, and prevent costly breakdowns during peak cold-weather use.

As temperatures drop below freezing across the Midwest, homeowners rely on their heating systems more than ever. A hot shower after a cold day can be one of life’s simple pleasures, but neglecting water heater maintenance can lead to inefficiencies, breakdowns, and even safety hazards. 

Follow these essential maintenance tips to keep your water heater running safely and efficiently all season long.

1. Flush Your Water Heater Annually

Over time, sediment accumulates in the bottom of your water heater tank. This buildup can reduce efficiency, clog valves, and even cause damage to the unit. Flushing your water heater at least once per year helps remove sediment, improving both performance and lifespan.

Tip: If you’re unsure how to flush your water heater, consult the manufacturer’s instructions or call a professional plumber for assistance.

2. Test the Temperature-Pressure (T&P) Relief Valve

The T&P relief valve is a critical safety feature that releases pressure if the tank becomes overheated or over pressurized. To test it:

• Turn off the power and water supply to the heater.
• Place a bucket under the discharge pipe connected to the valve.
• Lift the valve lever and check for water flow. If it doesn’t flow or leaks after the test, it may need replacement.

If you’re not comfortable performing this test, contact a professional plumber to ensure it’s done safely and correctly.

3. Set the Temperature to 120°F

Keeping your water heater set to 120°F strikes the right balance between safety and efficiency. Higher temperatures can cause scalding, particularly for children or elderly individuals, while lower temperatures can allow harmful bacteria, like Legionella, to thrive.

Adjusting the temperature is simple and can usually be done using the thermostat dial located on the tank.

4. Clear the Area Around Your Water Heater

For gas-fired water heaters, keep the surrounding area free of combustibles like paper, dust, and flammable liquids. This reduces the risk of fire and ensures proper airflow for efficient combustion.

5. Replace the Sacrificial Anode Rod

The sacrificial anode rod inside your water heater prevents the tank from corroding by attracting corrosive elements in the water. Over time, this rod deteriorates and needs replacement to continue protecting your tank.

Replacing the anode rod is a complex task best left to professionals. Contact the experts at ABC Plumbing, Sewer, Heating, Cooling, and Electric to handle this important maintenance step.

6. Schedule an Annual Water Heater Tune-Up

Regular professional inspections and tune-ups are essential for keeping your water heater in top condition. During a tune-up, a licensed plumber can:

• Inspect all components, including the T&P valve and anode rod.
• Flush the tank to remove sediment buildup.
• Check for leaks or signs of corrosion.
• Ensure the system is operating safely and efficiently.

Addressing minor issues during an annual tune-up can prevent costly repairs and extend the lifespan of your water heater.

Additional Tips for Efficient Water Heater Operation

• Insulate your water heater and pipes, especially in cold climates like Chicagoland, to reduce heat loss.
• Replace old water heaters that are inefficient or nearing the end of their lifespan (typically 8-12 years for most models).
• Consider upgrading to a tankless water heater for on-demand hot water and energy savings.

Have Questions About Your Water Heater?

At ABC Plumbing, Sewer, Heating, Cooling, and Electric, we specialize in water heater maintenance, repairs, and installations. Schedule a tune-up today to ensure your water heater is ready to handle the demands of the season.

Scroll further down this page, locate the location closest to you, and click the phone number to call us. Our expert plumbers are here to help keep your home warm, safe, and comfortable throughout the winter.

ABC Plumbing Locations