How to Check Tank Pressure, Expansion Vessel Full

Close-up of a heating system expansion vessel showing water level and air chamber

A waterlogged expansion vessel can compromise your heating system, causing pressure spikes, leaks, and inefficiency. This guide explains how to check expansion tank pressure, identify a vessel that is full, and maintain your system safely. What Is an Expansion Tank and How Does It Work? An expansion tank (also called an expansion vessel) is a […]