What's a Water Heater Expansion Tank, and Do I Need One?
Nov 17, 2025 · What Is a Water Heater Expansion Tank? A water heater expansion tank—or thermal expansion tank—is a small tank added to a water supply pipe. It acts as a safety …
Water Heater Expansion Tanks - The Home Depot
Thermal Water Heater Expansion Tank. Get free shipping on qualified Water Heater Expansion Tanks products or Buy Online Pick Up in Store today in the Plumbing Department.
Water Heater Expansion Tanks 101: Complete Guide
Sep 9, 2025 · Find the answers to common water heater expansion tank questions. Our complete guide has all the info you need, including tank types, sizes, and installation.
Water Heater Thermal Expansion Tanks - PlumbingSupply.com
A thermal expansion tank is designed to help protect potable (drinkable) hot water systems, helping to maintain them and keep them working efficiently. They are used to absorb excess …
What is an Expansion Tank, and Why Do You Need One?
Feb 25, 2025 · What is a Thermal Expansion Tank? A thermal expansion tank is a device designed to manage the increased pressure caused by the thermal expansion of water in a …
Why You Need a Water Heater Expansion Tank and How it Works
The Short Answer Is: Water heater expansion tanks, also called thermal expansion tanks, are small but significant devices that help regulate the pressure in water heaters and plumbing …
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Thermal Expansion - Watts
Our potable water expansion tanks are designed to absorb the increased volume of water created by thermal expansion and maintain a balanced pressure throughout the potable water supply …
Therm-X-Trol® - Amtrol
We Can Take the Pressure™ Amtrol invented the thermal expansion tank to absorb expanded water in closed, hot water systems and protect the water heater.
Eastman Thermal Expansion Tank, 2 gal, 3/4 in MIP Connection ...
Sep 30, 2011 · The Eastman Thermal Expansion Tank is designed to protect residential water heaters from excess pressure caused by thermal expansion. Built with a butyl rubber …
What Is A Thermal Expansion Tank & How It Works
Jul 3, 2024 · What is a thermal expansion tank? The thermal expansion tank, also known as a water heater expansion tank, is an indispensable part of the water heater system, designed to …