What is a Water Heater Expansion Tank?

A water heater expansion tank is required by code in a closed water system that uses backflow preventers and check valves. But what exactly does this plumbing fixture do, and why is it needed? Read on to learn the purpose of a water heater expansion tank, how it works, and its advantages.

Here at Neighborhood Plumbing, we are a one-stop destination for water heater services in Pittsburgh, PA , including water heater repair. We understand how a water heater expansion works and have the expertise to install this fixture correctly.

Water Heater Expansion Tank?

Also known as a thermal expansion tank, a water heater expansion tank is a small, secondary tank that provides an overflow space for thermal expansion inside a water heater when the water heats up and expands. The tank provides a space for the expanding water to go, thereby minimizing the risk of pressure damage and bursts. It is attached to the water supply pipe that leads to the water heater.

When water is heated inside a water heater, it expands, a process known as thermal expansion. The expansion increases pressure within the tank. In a closed system, the water won’t flow back into the water lines and can cause pressure to build up inside the tank. A thermal expansion tank solves this problem by providing a space for the expanding water to go.

Advantages of Water Expansion Tanks

• Improves Water Heater Efficiency

This component accommodates the expanding volume of heated water. It prevents the water heater from constantly cycling on and off to relieve pressure. This reduces unnecessary energy consumption. A stable pressure also allows the water heater to operate more consistently.

• Offer Protection From Pressure Build-Up

In closed plumbing systems, heated water has no escape route. An expansion tank acts as a buffer that absorbs excess pressure. This prevents strain on the water heater and pipes, which can lead to leaks, cracks, and premature failure. It maintains system pressure within safe operating limits.

• Ensures Safety

Excessive pressure can lead to catastrophic failures, such as burst water heaters or pipes. An expansion tank prevents these dangerous pressure spikes to ensure the safety of your home and family. It keeps the pressure in a safe range, thereby reducing the possibility of dangerous accidents.

• Increases Lifespan Of Hot Water Heater

The constant stress of pressure build-up can shorten the lifespan of a water heater. An expansion tank mitigates this stress to ensure your water heater lasts longer. This saves you money on premature replacements and ensures you get the most out of your investment.

• Leak Prevention

High pressure can weaken pipe joints and seals and cause leaks. An expansion tank helps maintain stable pressure, reducing the risk of leaks throughout your plumbing system. This protects your home from water damage, mold growth, and costly repairs.

Can I Install an Expansion Tank Myself?

While DIY projects can be tempting, expansion tank installation is best left to the pros. Improper installation can lead to serious pressure issues, leaks, and even damage your water heater. Licensed plumbers ensure quality installation, thereby guaranteeing optimal performance and safety. When you’re in need of any kind of water heater services, reach out to a trusted plumbing repair service.

Get Professional Expansion Tank Installation and Maintenance From Neighborhood Plumbing

Do you need an expansion tank for your water heater? Is your existing expansion tank acting up? Call the experts at Neighborhood Plumbing for help. For over 20 years, our licensed and experienced plumbers have provided top-notch water heater repair services. From fluctuating water temperatures and inadequate hot water to odd noises and faulty heating elements, we fix them all. With top-notch workmanship and attention to detail, you can count on our team to restore your water heater to good working order.