IMPORTANT: This Watts thermal expansion tank sizing tool should be used as a general guide to sizing thermal expansion tanks. Sizing calculations are wholly dependent on user input and …

Calculate expansion tank size for heating & hot water systems. Free calculator determines proper tank volume to prevent pressure problems.

Estimate the right expansion tank size for heating or plumbing systems with Supplyhouse's Expansion Tank Size Calculator. Follow the short guided flow to get a capacity …

Click the button below to determine the total volume required. Don’t know what size tank to choose? Always go bigger!

Learn what size expansion tank you need for your system. Discover how to choose the right expansion tank for optimal performance.

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.

Amtrol ® Products are made in the USA at our ISO registered facilities by American workers dedicated to producing the highest quality expansion tanks in the world.

Hot water heating system expansion tank / compression tank size guide: This article provides basic sizing charts for hydronic (hot water) heating boiler expansion tanks or compression tanks.

But don’t worry; in this article, we’ll break down everything you need about expansion tanks and help you determine the perfect size for your hot water heating system.

As a general rule, the bigger the water heater, the bigger the expansion tank. For a 50-gallon water heater, you require a 2-gallon expansion tank. Depending on how high your water …