How Do Water Pressure Tanks Work?

If you’re buying a home for sale near Tampa, you may want to check on the home’s water pressure tank. Is it big enough to provide a constant flow of water for the size of your family that will be living in the house? Water pressure tanks aren’t complicated, but things do need to work together to provide water on demand for your home.

The pressure switch is set so that the tank knows when to get more water from the water supply. When the tank pushes enough water out to trigger the pressure switch, more water is let into the system from the water supply. Then, the water refills to maximum capacity, creating more pressure. Once the pressure switch detects enough pressure in the tank, it shuts off the supply of water.

There has to be a balance between the starting and stopping pressures. The switches are set so that there is a 20-psi range for the turning off and turning on pressure readings. So, if the switch is set to turn on when the tank reaches 35 psi, it will be set to turn off again at 55-psi. Generally, it’s set to turn on at 40-psi and off at 60-psi.

You will greatly extend the life of the pressure tank if you make sure that it’s sized appropriately for your household. Still, don’t pass on a good house just because the pressure tank isn’t suitable. Pressure tanks are an expense, but not a large enough expense to justify passing on a house. They are easy to replace for a knowledgeable DIY-er and even easier to replace for a professional!


If you’re interested in selling a Tampa Bay area home, please contact us for more information about listing your home. Check out our helpful article describing the process and how to decide if it’s the right time to sell.


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Our experienced agents know the area and would love to find you the perfect home in the Tampa Bay or any of the surrounding areas.  When you’re ready, call us at 813-961-6000, or contact us online. We handle real estate in Hillsborough County (the Tampa – St. Petersburg – Clearwater metropolitan area), real estate in Pasco County (Port Richey, New Port Richey, Dade City, Zephyrhills and San Antonio), and real estate in Pinellas County (Tampa – St. Petersburg metropolitan area.) We’ll help you find the right home for your needs!