What Does a Water Heater Expansion Tank Do?

A water heater expansion tank is a small auxiliary tank installed near your main water heater. Its primary function is to absorb the extra volume of water that results from thermal expansion when water heats up. As water is heated, it expands, and without a designated place to go, this pressure can put undue stress on your plumbing system. The expansion tank is designed to handle this increased pressure by allowing the excess water to flow into it temporarily, relieving stress on your pipes and keeping your system functioning smoothly. It’s an extra layer of protection that works alongside your main water heater so your home’s plumbing remains in good condition.

Do All Water Heaters Need an Expansion Tank?

Not every water heater installation requires an expansion tank, but many do, especially if your home has a closed-loop plumbing system. A closed-loop system uses a backflow prevention device, check valve, or pressure-reducing valve to keep water from flowing back into the public water supply. While these features are great for water quality and safety, they trap the expanding water within your home’s plumbing, which can lead to pressure buildup. The necessity of an expansion tank also depends on your local plumbing codes, the size of your water heater, and the pressure levels in your home. Homes with high water pressure or larger water heaters are more susceptible to the risks of thermal expansion. For accurate advice and to ensure compliance with local regulations, it’s wise to speak with a professional plumbing company. They can assess your system, guide you on whether an expansion tank is required, and recommend the appropriate size and model.

Can You Install an Expansion Tank on Your Own?

While a DIY approach may seem tempting, installing an expansion tank isn’t as straightforward as screwing it into place. It involves determining the correct size for your water heater, properly placing the tank, and securing it to withstand pressure fluctuations. Incorrect installation can lead to inefficient performance or even cause the tank to fail prematurely, costing you more in the long run. Working with a qualified professional ensures the installation is done correctly, which minimizes any potential risks to your plumbing system. A plumber in Marysville, CA can also check for other hidden issues, such as excessive water pressure or faulty check valves, that could affect the performance of your expansion tank and water heater.

What Can Go Wrong with an Expansion Tank?

Expansion tanks, like any other part of your plumbing system, can wear out or fail over time. Common issues include bladder leaks, corrosion, and improper pressure settings. If the internal bladder fails, the tank loses its ability to absorb expanding water, and the pressure buildup will directly impact your plumbing. Corrosion is another potential problem, especially if your water supply is hard or acidic. A professional checkup will typically include testing the pressure, examining the tank’s condition, and ensuring it’s correctly calibrated to handle your water heater’s output. Improper installation is a leading cause of expansion tank failure as well. If the tank is not set up according to specifications, it might not operate as intended, leading to ineffective pressure relief and the need for a water heater repair or a water heater replacement service. To avoid these pitfalls, rely on a trusted plumber to handle your installation and the maintenance of your expansion tank.

Why You Should Consider an Expansion Tank

Installing a water heater expansion tank might seem like an added expense, but it’s a small investment that can save you from bigger plumbing headaches. It helps maintain the longevity of your water heater, prevents leaks, and avoids potential damage to your plumbing. Plus, it can help your home comply with local plumbing codes so your system is up to standard. If you’re unsure whether your water heater setup requires an expansion tank, discussing your needs with local plumbers can provide you with the answers you need. The assessment will take into account your water pressure, heater size, and specific system configuration, giving you a custom solution that best fits your home’s needs.

Do You Need a Water Heater Plumbing Repair Service?

At Rooter Hero Plumbing & Air, we understand the ins and outs of water heater systems and are here to help you make the best choices for your home. Whether you need an urgent water heater repair or a water heater replacement or simply have questions about expansion tanks, our experienced team is ready to provide reliable guidance and dependable service. Call us today to schedule your plumbing service, and let us handle the rest.