What Is This Tank? How to Replace and Maintain a Water Heater Thermal Expansion Tank

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Do you have a tank like this mounted somewhere above your water heater? Ever wondered what it is? It's a water heater thermal expansion tank, and it needs to be maintained just like your water heater. In this video I demonstrate exactly how to make sure your thermal expansion tank is operating correctly, perform basic maintenance on it, and replace it when it is worn out. Water heater expansion tanks are vital pieces of your home's plumbing, and proper maintenance will keep it and the rest of the plumbing in your house working properly for many, many years. Check out how easy it is to keep it running right, and how simple replacement can be.

Need some of the tools or other items I used in this video? Clicking these and buying something will send a few pennies to help this channel, and does not cost you anything extra:

🛒 2.1 Gallon Expansion Tank:
🛒 4.4 Gallon Expansion Tank:
🛒 Teflon Tape:
🛒 Pipe Dope:
🛒 Tank Mount Bracket:
🛒 Pipe Wrench:

🕐 0:00 Introduction
🕐 0:21 What The Tank Does
🕐 1:06 How It Works
🕐 1:50 Symptoms Of A Failed Tank
🕐 2:22 How To Test Your Tank
🕐 4:33 How To Replace The Tank
🕐 6:55 How To Support The Tank
🕐 8:57 Conclusion
🕐 9:49 Bloopers

Here is how I built the air and water pressure gauge I used in this video:
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Here's the video I mentioned with an excellent explanation of how an expansion tank works:
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#ExpansionTank, #ThermalExpansionTank, #WaterHeater

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