How to Fix Low Water Pressure on Hot Side Only in Shower


Not having enough water pressure in the shower is not only annoying, it can also lead to soap film on your skin and shower walls if there's not enough water to properly rinse off. Because water pressure is tied to both the hot and cold lines, the only way to increase water pressure to the hot side of the shower system is to increase the overall water pressure to the entire house. These adjustments are made at the water pressure regulator, and will boost the amount of water pressure to all the fixtures in your home.

Things You'll Need

  • Channel lock pliers
  • Screwdriver
  • Open the access panel on your plumbing system, or locate the exposed plumbing in your basement or crawl space.

  • Locate the water pressure regulator, which is made out of brass and shaped like a cone. The regulator is usually located near where the water from the street enters your home.

  • Loosen the nut on the regulator valve by turning it counterclockwise with channel-lock pliers. Turn the nut about four times, but do not remove it.

  • Insert a screwdriver into the adjustment knob. The knob is located on the top of the valve and has a needle attached that shows the current pressure settings on the system.

  • Turn the screw clockwise to increase the water pressure to the entire house. Make small, incremental adjustments, testing the water pressure at the shower each time. Stop turning once the shower head reaches the desired pressure level. Tighten the nut on the regulator by turning the nut clockwise with the pliers until tight.

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