How to flush a water heater

When it comes to ensuring a steady supply of hot water in your Lafayette home, your water heater plays a crucial role. However, like any other appliance, your water heater needs proper care and attention to keep running efficiently. In this post, 5 Star Plumbing, your trusted Plumber in Lafayette, will discuss the importance of water heater maintenance and how it can extend the life of your water heater. We'll also guide you through the essential process of flushing your water heater.

Why Water Heater Maintenance Matters

1. Improved Efficiency: Regular maintenance can significantly boost the efficiency of your water heater. Over time, sediment buildup, mineral deposits, and rust can accumulate inside the tank. These factors can insulate the heating element, making it work harder and consume more energy to heat the water. As a result, your energy bills may skyrocket. Water heater maintenance helps prevent this by keeping the tank clean and free of obstructions.

2. Extended Lifespan: A well-maintained water heater is a longer-lasting water heater. Neglecting maintenance can lead to premature wear and tear, ultimately shortening your water heater's lifespan. By scheduling regular check-ups and maintenance, you can avoid costly repairs or replacements, ensuring your water heater serves you well for years to come.

3. Safer Operation: Neglected water heaters are at a higher risk of developing problems, such as leaks, overheating, or even tank ruptures. These issues not only cause damage to your home but can also pose serious safety hazards. Routine maintenance, including safety inspections, can help identify and prevent these potential dangers.

How to Flush a Water Heater

Flushing your water heater is a key component of regular maintenance. Over time, sediment and minerals settle at the bottom of the tank, leading to reduced efficiency and potential damage. Here's a step-by-step guide on how to flush a water heater:

1. Turn Off the Power: If you have an electric water heater, turn off the electricity at the breaker box. For gas water heaters, set the thermostat to the "Pilot" position.

2. Turn Off the Water Supply: Locate the cold-water supply valve and shut it off.

3. Drain the Tank: Connect a garden hose to the drain valve at the bottom of the tank. Position the other end of the hose in a safe drainage area. Open the pressure relief valve and the drain valve to allow the water to flow out.

4. Flush the Tank: Let the water run until it appears clear. If it remains discolored, continue flushing until it runs clear.

5. Close the Valves: Close the drain valve and the pressure relief valve. Remove the hose and turn on the cold-water supply. This will fill the tank back up.

6. Turn the Power Back On: Turn on the power supply to your water heater.

7. Check for Leaks: Inspect the connections for any leaks. If everything is secure, your water heater should be back in operation.

For a more detailed and safe water heater flushing process, it's recommended to consult a professional, such as our experts in water heater repair in Lafayette.


Water heater maintenance is not a luxury but a necessity. Regular upkeep can save you money, extend the life of your water heater, and ensure the safety and comfort of your home. Remember, when it comes to water heater maintenance or repair in Lafayette, you can always count on 5 Star Plumbing. Don't wait until problems arise – schedule your maintenance today and enjoy reliable hot water for years to come.

Call us at (337) 202-0246 to schedule a service, and let us become your go-to plumbing partner in Lafayette, LA.