Regular maintenance is the key to keeping your Rheem water heater running efficiently and extending its lifespan. In this blog post, we’ll explain the simple yet crucial process of draining your Rheem water heater and why you should drain your Rheem water heater. Not only will this help improve its efficiency, but it can also save you money in the long run by preventing damage from sediment build-up.

Gather Your Materials

Before you begin, make sure you have these things and tools ready:

  1. A garden hose long enough to reach a drain or outside
  2. A container to gather water and sediment.
  3. Gloves to protect your hands

Safety precautions: 

Turn off the power supply to the water heater and the water supply.

Step-by-Step Guide to Draining Your Rheem Water Heater

Follow these steps to drain your Rheem water heater:

Step 1: Turn off the Power Supply

For safety, switch off the power supply to your water heater. This step is crucial to avoid any accidents while working on the unit.

Step 2: Turn off the Water Supply

Find the water inlet valve where water comes into the heater, and turn it off. This step ensures no new water enters the tank during the draining process.

Step 3: Locate the Drain Valve

Find the drain valve at the bottom of the water heater. It often looks like a hose tap or a faucet.

Step 4: Connect a Hose

Connect one end of your garden hose to the drain valve and put the other end somewhere it can safely let the water flow out, like a floor drain or outside.

Step 5: Open a Hot Water Faucet

Turn on a hot water faucet inside your house to allow air into the tank and help the water flow out easily. It stops a vacuum from happening.

Step 6: Drain the Tank

Open the drain valve slowly. Hot water mixed with sediment will start coming out through the hose. Be careful because the water can be boiling. Let all the water in the tank flow out ultimately.

Step 7: Flush Out Sediments

Once the tank is empty, close the drain valve and turn on the water supply. Allow the water to flow for a few minutes to clear any remaining debris. Lastly, close the faucet that you had previously opened.

How Often Should You Drain Your Rheem Water Heater

How often you should drain your Rheem water heater depends on things like how clean your water is and how much you use it. As a general rule, think about doing it once a year or every six months. But if you start getting less hot water or hearing strange noises, it’s a sign you should check it more often.


As we sum up, regular maintenance is crucial to keep your Rheem water heater in top condition. Draining your water heater is a simple yet effective way to improve efficiency, prevent damage, and save money. By following our step-by-step guide, you can ensure your water heater continues to provide reliable hot water for years to come.

We hope this guide has helped drain your Rheem water heater. Check out our related articles and resources for more Rheem water heater maintenance tips.

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