How to boost hot water pressure

Updated February 21, 2017

The optimum water pressure in a home is 24.9 Kilogram per square inch, or PSI. This should provide adequate force in the flow to fill appliances and enjoy a great shower. Homes with well water often experience low water pressure. Urban homes can find their pressure is low due to municipal water supply issues. Some of the causes of low water pressure are simply an issue of current fixtures. The low flow can also be caused by clogging in the fixtures. All the water supply pipes need to be inspected first to ensure that none are crimped, which will restrict water flow.

Turn off the water at the main before trying to repair the water pressure. Unscrew the heads at the sink and remove the screen. Pull out the aerator and push in a new one. Replace the screen and screw the head back on. Turn the water back on and turn on the faucet. The aerator might have been clogged with debris and minerals from hard water. Replacing the aerator will raise the pressure.

Fill a bowl with a three cups of water and one cup of vinegar. Use the adjustable wrench to unscrew the shower head. Place the shower head in the vinegar and water mixture for an hour. Rinse it off and replace the shower head. The vinegar loosens and soaks away the lime and scale deposits on the shower head.

Replace your shower head. Many low flow shower heads have been installed to reduce water usage. It is a great idea but may not provide enough pressure in some instances. Purchase a rain shower head or an adjustable head with different shower patterns. Unscrew the old head and install the new one by screwing it on.

Install a new shower pump if you have one. They are easy to install. Just turn the water and power off. Unscrew the two hoses that protrude from the unit and remove it. Place the new one in the same location and screw the hoses back on. Turn the water and power on and test the water pressure.

Consult a plumber to have a pressure booster installed. These go on the main water feed and include a pump, sensor, controller, extra piping and a turn-off faucet. The job is one for a professional who knows plumbing and soldering. It will increase your water pressure to the level at which you set it by sensing when the water goes on and putting the pump into action.

Things You'll Need

  • Aerators
  • Vinegar
  • Adjustable wrench
  • Shower head
  • Power shower pump
  • Pressure booster
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About the Author

Bonnie Grant began writing professionally in 1990. She has been published on various websites, specializing in garden-related instructional articles. Grant recently earned a Bachelor of Arts in business management with a hospitality focus from South Seattle Community College.