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Expansion Tank | Plumber Katy, TX

expansion tank

Thermal expansion refers to the characteristic of water to expand when heated, creating an increased volume. In a closed hot water system, the increased volume causes a rise in pressure within the home’s plumbing system and the water heater. Furthermore, the increased pressure can result in damage to the water heater, the home’s plumbing in Katy, and potentially to the home’s water using appliances. If your home is experiencing problems due to pressure, contact Benjamin Franklin Plumbing. The solution is the installation of an expansion tank, ensuring the pressure is reduced, and no damage or water leaks will occur. The expansion tank accomplishes this by acting as an overflow receptacle for the excess hot water, resulting in the reduction of the pressure.

Determining the proper size of  an expansion tank for your home’s unique needs will depend on the capacity of the water heater, and the incoming water pressure to your home. Hiring a licensed, qualified plumber assures the proper size and professional installation of an expansion tank. If you are installing a water heater as well, our plumbers can also provide this service for you. You can rely on our licensed plumbers to have the expertise required for the professional service of your home’s plumbing in Katy.

Sources of High Pressure

High pressure in the plumbing system, whether due to thermal expansion or a high water pressure is a common cause of water leaks and damage to the plumbing system. When high water pressure occurs, the most common cause is the municipal water supply. While the maximum recommended water pressure for a residence is typically 80 psi, water authorities often set the pressure in excess of 100 psi. While low water pressure exists in some areas, many municiple water systems provide a high pressure. This is necessary in order to adequately supply the high demand of fire hydrants, provide ample water pressure to supply the upper floors of high rise buildings, and structures at high elevations. Homes and businesses in the areas where uncontrolled high pressure would be detrimental to their plumbing in Katy, typically control the pressure with the installation of a pressure regulator to reduce the pressure to a level that will prevent damage in your home’s plumbing system.

Unfortunately, the pressure regulator creates a “closed system” of your plumbing system. Installation or replacement will require the services of a licensed plumber. The regulator is typically installed on the home’s service line where it is connected to the water meter. This provides protection from high pressure for both the service line and in the home’s hot water heater and plumbing in Katy.

A failed pressure regulator can be responsible for either a low water pressure, or a high water pressure, depending on how the failure occurs. In addition, once the regulator fails, typically due to age and corrosion, it will the regulator will require prompt replacement by a licensed plumber.

However, it is essential to understand that a pressure regulator will not prevent high pressure in the plumbing system due to thermal expansion. Only an expansion tank can provide the protection of your home’s water heater and plumbing in Katy from it.

Testing the water pressure serving your home or business is a simple task. Using a water pressure gauge available at home supply stores for less than $20, the device is screwed into on an outdoor faucet. Next, simply turn on the water and the pressure will be displayed on the dial. If the water pressure is above 80, contact a Benjamin Franklin Plumbing® of Rosenberg for installation. Installation of a pressure regulator is not a task for the average homeowner as it requires cutting into the home’s water supply line. We can provide a professional installation, providing protection for your plumbing in Katy and the water heater. However, the installation of a pressure regulator calls for the installation of an expansion tank.

In addition, when you are installing a new or replacement water heater, check the warranty terms. A growing number of water heater manufacturers require the simultaneous installation of an expansion tank in order to maintain the warranty. Furthermore, manufacturer’s typically require the installation to be provided by a licensed plumber. Ben Franklin plumbers in Katy will provide plumbing services you can rely on, and your satisfaction is guaranteed.

Expansion tank installation requires proper sizing according to specific factors. These factors include the capacity of the water heater, and the incoming water pressure. If you are planning to install a new water heater, plan to install the expansion tank at the same time. While it adds to the cost of installation, it will protect against the cost of hot water leaks and costly damage to your home, damage to your plumbing in Katy and appliances. In addition, it will assist the water heater to last longer, saving you money in the end.

An expansion tank installation is recommended when the following ocurs:

  • The installation of a backflow preventer
  • Water meter replacement
  • Water heater replacement or a new installation
  • The installation of a pressure regulator


The expansion tank should receive maintenance yearly. Contact Benjamin Franklin Plumbing® of Rosenberg for plumbing repairplumbing installation or the maintenance of your plumbing in Katy. Our plumbers will provide the expert expansion tank service you need. Benjamin Franklin Plumbing® of Rosenberg is dedicated to your 100% satisfaction, and provides first quality plumbing services and products for your home or business. We serve Katy, Houston, Sugar Land and the surrounding areas, and are a member of the BBB with a consistent A+ rating.