How To Install An Expansion Tank On A Water Heater
If you have noticed that your water heater is making strange noises or the pressure relief valve is constantly releasing hot water, then it may be time to install an expansion tank. An expansion tank is a small tank that is connected to your water heater and helps to regulate the pressure within the tank. In this article, we will guide you through the process of installing an expansion tank on your water heater.
What is an Expansion Tank?
An expansion tank is a small tank that is installed on your water heater. It is designed to absorb the excess pressure that builds up within the tank when the water is heated. When water is heated, it expands and creates pressure within the tank. Without an expansion tank, this pressure can cause damage to your water heater or plumbing system.
Tools and Materials Needed
Before you begin the installation process, you will need to gather the following tools and materials:
- Expansion tank
- Teflon tape
- Adjustable wrench
- Pipe cutter or hacksaw
- Compression fitting
- Threaded nipple
- Ball valve
- Flexible copper tubing
Follow these steps to install an expansion tank on your water heater:
Step 1: Turn off the Power and Water Supply
Before you begin the installation process, turn off the power and water supply to your water heater. This will ensure that you do not get injured and that you do not cause any damage to your plumbing system.
Step 2: Drain the Water Heater
Next, you will need to drain the water heater. Attach a garden hose to the drain valve at the bottom of the tank and open the valve. Allow the water to drain completely from the tank.
Step 3: Install the Compression Fitting
Once the water has been drained from the tank, you can begin installing the expansion tank. Wrap Teflon tape around the threads of the compression fitting and screw it into the hot water outlet on top of the tank.
Step 4: Install the Threaded Nipple
Screw the threaded nipple into the compression fitting. Use an adjustable wrench to tighten the nipple securely.
Step 5: Install the Ball Valve
Attach the ball valve to the other end of the threaded nipple. This valve will allow you to shut off the water supply to the expansion tank if necessary.
Step 6: Install the Flexible Copper Tubing
Attach one end of the flexible copper tubing to the other end of the ball valve. Bend the tubing so that it connects to the expansion tank. Use a pipe cutter or hacksaw to trim the tubing to the correct length.
Step 7: Install the Expansion Tank
Attach the expansion tank to the end of the flexible copper tubing. Use Teflon tape to wrap the threads on the connection and tighten securely with an adjustable wrench.
Step 8: Turn on the Water Supply and Power
Finally, turn on the water supply and power to your water heater. Check for leaks and ensure that the expansion tank is functioning properly.
Frequently Asked Questions
- Why do I need an expansion tank?
- Can I install an expansion tank myself?
- What size expansion tank do I need?
- How much does an expansion tank cost?
- How long does an expansion tank last?
An expansion tank helps to regulate the pressure within your water heater and prevent damage to your plumbing system.
Yes, if you have some plumbing experience and the necessary tools and materials, you can install an expansion tank yourself.
The size of the expansion tank you need will depend on the size of your water heater and the water pressure in your home. Check the manufacturer’s specifications for the correct size.
An expansion tank can cost anywhere from $30 to $100, depending on the size and brand.
An expansion tank can last up to 10 years, but it may need to be replaced sooner if it becomes damaged or starts to malfunction.