Expansion tanks are used in water heater systems to address the issue of thermal expansion. Thermal expansion occurs when water is heated, causing it to expand in volume. In a closed plumbing system, such as the one found in many residential and commercial buildings, this expansion can increase water pressure.

In Sacramento, and many other regions, the use of expansion tanks is often mandated by plumbing codes. Here’s why they are necessary:

• Prevention of Excessive Pressure: When water is heated, it expands. Without an expansion tank, this increased volume of water has nowhere to go in a closed system. This can significantly increase water pressure, potentially causing damage to the water heater, plumbing pipes, and fixtures. The expansion tank provides a space for the expanded water to go, preventing a dangerous rise in pressure.

• Protection of Water Heater: Water heaters are not designed to withstand the increased pressure that results from thermal expansion. Over time, exposure to high pressure can lead to damage to the water heater tank, valves, and other components. An expansion tank helps protect the water heater from the stress of fluctuating pressure.

• Code Compliance: Plumbing codes in many areas, including Sacramento, may require the installation of expansion tanks as a safety measure. Compliance with local codes ensures the plumbing system is designed and installed to meet certain safety standards.

• Extended Lifespan of Plumbing Components: By reducing stress on the water heater and the entire plumbing system, expansion tanks can contribute to the longevity of these components. This can lead to fewer repairs and a longer operational life for the water heater and associated plumbing.

In summary, the installation of expansion tanks in water heater systems in Sacramento is necessary to prevent excessive pressure buildup caused by thermal expansion. It’s a crucial component for maintaining the safety and functionality of the plumbing system in both residential and commercial buildings. Contact Golden Valley Plumbing to install an expansion tank for your water heater.