Rheem drains that leak can be frustrating and expensive for homeowners. To avoid further damage to your water heater and ensure its efficient operation, it is essential that you act immediately. We will cover a detailed guide in this blog on how to replace a Rheem leaking water heater drain.

This article will help you to resolve the issue and restore the integrity of the water heater.

  1. Identifying The Source Of The Leak: Identifying accurately the source of a leaky Rheem drain is the first step to addressing the problem. Drain valves, which are located on the bottom of water heater tanks, are a common source. You must also rule out other causes like loose connections or damaged pipe. Inspect the drain valve, surrounding areas and all the other parts to find the exact leak location.
  2. Gathering Materials and Tools: Before beginning the replacement process, gather all the materials and tools required. This includes an adjustable screwdriver, a pipe wrench and plumber’s tap. It also usually includes a replacement drain, as well as a bucket or towel to catch any water. Having all the necessary tools and materials prepared will make the replacement process easier.
  3. Shutting Off Water Supply and Draining Tank: In order to safely replace a leaking drain, it’s important to shut down the water supply. Turn off the water shutoff valve attached to the water heater. Connect a hose at the drain valve, and then direct it into a drainage area. Open the drain valve to drain water completely from the tank. This step is crucial to avoid water leaking during the process of replacing the tank.
  4. Removing an Old Drain Valve – Once the tank is empty, use a pipe wrench or adjustable wrench to loosen and carefully remove the old valve. Use counter-clockwise pressure to unscrew valve from tank. If the valve is hard to remove, you can use penetrating lubricant to loosen it. You may also need to seek professional assistance if this doesn’t work. If there is any tape or compound on the threads of the valve, this will have to be replaced when installing.
  5. Installing the New Drain Valve. Now that the old drain valve has been removed, you can install the new one. Wrap the threads of your new drain valve using plumber’s tape, or seal the connection with a suitable sealant. Be sure to tighten the valve securely after threading it into the opening of the water heater tank. Do not overtighten as this could damage the tank or valve.
  6. Testing for Leaks & Restoring Water Supply: After installing the new valve, it is important to test the system for potential leaks. Then restore the water supply. Slowly open the shutoff valve and allow the water back to flow. Be sure to monitor the new drain valve carefully for any leaks. After confirming that there are no leaks, restore the full water supply. Check for additional leaks in the system.


Rheem’s water heater drain that leaks can be a problem for homeowners. But with the right information and steps, this issue can be effectively resolved. This problem can be solved by identifying the cause of the leak, collecting the necessary tools, stopping the water supply and following the detailed steps of removing and changing the drain valve.

Be sure to check for leaks first before restoring full water pressure. You should always seek professional help if you are not sure or feel uncomfortable about the replacement process. This is to ensure your water heater’s safety and proper operation.