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Updated by Eric Regan on Jan 19, 2017
Eric Regan Eric Regan
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If you aren't satisfied with your home's water pressure, you may be considering a water pressure booster system. These systems can increase water pressure and give you the flow you need. But how does a water pressure booster work? Most are relatively simple systems and have certain things in common


Uses a tank and bladder

The most important part of understanding a water pressure booster system is knowing how the water pressure is generated. In most cases, this involves a simple combination of a tank and bladder. The tank is a closed tank that fills up with water, which the system pumps into it. The bladder is located inside the tank and is filled with air. As water is forced into the system, it essentially competes with the air bladder for space inside the tank, and the bladder exerts pressure on the water. This is how the water gains pressure. Then when water is released from the tank and into your pipes, it has more pressure behind it than it did before.


Is powered with an electric motor

All water pressure booster systems are powered by a motorized pump. In many ways, this is the most important component. It is this device that allows the entire system to function, and a high-quality, hardy pump means it will keep working for decades to come.


Has installation requirements

Generally, you will need three things to install a booster system: space for the tank, a nearby power source for the motor, and fittings so that your water pipe and your booster system can connect. This can be done by an experienced plumber or, with careful planning and the right know-how, by a homeowner.


Is targeted for a specific PSI

With the right system, almost any amount of pressure is possible, but not just any system can give any amount of pressure. Generally, your water pressure booster will be designed to provide a specific amount of PSI (pounds per square inch) of added pressure, and you will need to choose a system that gives the right amount. For example, if you currently have about 50 PSI of water pressure and want about 80, you will need a system that provides 30 PSI. A more powerful system could produce uncomfortably high water pressure.



The best pressure boosters have a flow sensor so that they kick in automatically when needed