Understanding Water Heater Expansion Tanks
A water heater expansion tank is a vital component of a modern plumbing system, designed to handle the natural expansion of water as it heats. When water is heated, it expands—a process known as thermal expansion. Without an expansion tank, this increased pressure can strain the plumbing system, potentially causing leaks, damage to pipes, or a reduction in the lifespan of the water heater itself. How Does a Water Heater Expansion Tank Work? An expansion tank is a small, secondary tank installed near the water heater. It typically consists of two compartments separated by a flexible diaphragm: one side contains air, while the other accommodates the expanding water. As water heats and expands, the excess volume flows into the expansion tank, compressing the air on the other side of the diaphragm. This process prevents the pressure from building up in the plumbing system. Why Is a Water Heater Expansion Tank Important? Prevents Pressure Damage Without an expansion tank, the increasing...