Expansion Tanks

A water heater expansion tank is small tank that is attached to the water supply pipe of the water heater. The expansion tank is designed to handle the thermal expansion of water as it heats up in the water heater, preventing excessive water pressure. If water pressure gets to high it can damage valves in plumbing fixtures, joints in supply pipes and the water heater itself.

Does Your Water Heater Need An Expansion Tank?

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Most likely, you do. Yet, because expansion tanks were not as necessary in the past as they are today, you may not even know what an expansion tank is. Let alone why you probably need one.

What is an Expansion Tank?

An expansion tank looks like a small tank or boiler, and typically sits on top of, or adjacent to the water heater. They come in various sizes, depending on your water pressure, the size of the actual water heater, and the temperature the water is heated to.

As water is heated, it expands. In a water heater as water is heated, pressure in the tank vessel will increase if there’s no room for thermal expansion. The old domestic hot water heater plumbing systems were designed so that the expanding water would push back some to outside of the house – into the public water main, which would absorb the pressure. But, with changes in city ordinances and plumbing practices, cities are no longer allowing it this way.

This pressure build-up now has no place to go, which can cause major issues with your water heater including failure or bursting, and in some instances even explosion. Homeowners need an expansion tank to prevent these issues.

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Frequently Ask Questions

Please see below for answers to common questions we get asked about sewer line repairs.

What causes an expansion tank to fail?

Depending on the circumstances, mineral deposits or other debris may cause this. Some older expansion tanks do not have the internal bladders that are seen in more recent ones. This component is responsible for distinguishing between water and air pressure. As a result, air can escape from the tank and enter the water in your system, increasing the likelihood of injury.
What are the symptoms of a bad expansion tank?

An expansion is intended to accommodate the thermal expansion of water.... Water heaters and supply pipes can be damaged if the pressure in the system climbs to uncontrolled levels. It can also cause damage to valves in plumbing fixtures and supply pipes. One clue that your expansion tank has failed is a temperature and pressure relief valve that has sprung a leak.
Can expansion tank explode?

With increasing temperature, water can expand substantially, and if the water is hot enough to turn into steam, this might result in increased pressure on the water heater. It is possible for an explosion to occur if the relief valve is not working properly.
What happens if expansion tank is full of water?

It is a one-way communication system. Once the water has been diverted to the expansion tank, it will not return to the main hot water storage tank. It is necessary to drain the expansion tank of water on a regular basis if you have a closed-vent boiler system in order to recharge it for future effective over-flow use.
What happens if my expansion tank fails?

Frequently, the diaphragm that separates the two systems will fail, causing the two systems to merge into a single entity. When this occurs, the expansion tank becomes a "dead leg," which will eventually cause damage to your water heater and cause it to fail prematurely.

Cities We Proudly Service

Please take a moment to click below to see all the cities we are currently servicing.

Service Areas
- Cherokee County, GA
- Woodstock, GA
- Mountain Park, GA
- Waleska, GA
- Canton, GA
- Ball Ground, GA
- Nelson, GA
- Holly Springs, GA
- Clayton County, GA
- Bonanza, GA
- Conley, GA
- Forest Park, GA
- Irondale, GA
- Jonesboro, GA
- Lake City, GA
- Lovejoy, GA
- Morrow, GA
- Riverdale, GA
- Cobb County, GA
- Acworth, GA
- Austell, GA
- Fair Oaks, GA
- Kennesaw, GA
- Mableton, GA
- Marietta, GA
- Powder, GA
- Roswell, GA
- Smyrna, GA
- Vinings, GA
- DeKalb County, GA
- Acworth, GA
- Kennesaw, GA
- Austell, GA
- Fair Oaks, GA
- Roswell, GA
- Powder Springs, GA
- Vinings, GA
- Marietta, GA
- Mableton, GA
- Smyrna, GA
- Douglas County, GA
- Douglasville, GA
- Lithia Springs, GA
- Villa Rica, GA
- Fayette County, GA
- Brooks, GA
- Fayetteville, GA
- Peachtree City, GA
- Tyrone, GA
- Woolsey, GA
- Forsyth County, GA
- Cumming, GA
- Fulton County, GA
- Alpharetta, GA
- Atlanta, GA
- Chattahoochee Hills, GA
- College Park, GA
- East Point, GA
- Fairburn, GA
- Hapeville, GA
- Johns Creek, GA
- Milton, GA
- Palmetto, GA
- Sandy Springs, GA
- Union City, GA
- Gwinnett County, GA
- Auburn, GA
- Berkeley Lake, GA
- Buford, GA
- Dacula, GA
- Duluth, GA
- Grayson, GA
- Lawrenceville, GA
- Lilburn, GA
- Loganville, GA
- Mountain Park, GA
- Norcross, GA
- Peachtree Corners, GA
- Rest Haven, GA
- Snellville, GA
- Sugar Hill, GA
- Suwanee, GA
- Paulding County, GA
- Braswell, GA
- Dallas, GA
- Hiram, GA.

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