4.5 Gallon Thermal Expansion Tank for Water Heater

Keep your water heater running smoothly with this durable expansion tank that prevents pressure buildup and extends its life

Product Price

$66.99

Product Review Score

4.34 out of 5 stars

205 reviews

Product Summary

The 4.5 Gallon Thermal Expansion Tank is designed to keep your water heater running smoothly by absorbing excess pressure in your plumbing system. It’s easy to install, durable, and helps prevent costly leaks and system damage.

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Additional Product Details

  • Finished with appliance-quality paint to prevent rust and corrosion
  • Features a 100% butyl diaphragm and plastic liner, keeping system water separate from air precharge
  • Effectively manages expanded water from thermal expansion and returns it to the system when hot water is used
  • Prevents relief valve from activating unnecessarily
  • Compact size makes installation a breeze for both pros and DIYers
  • Generous 4.5-gallon capacity fits well in smaller heating or cooling systems
  • Enhances durability while looking sleek and appealing

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