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How to Air Out of Water Pipes?

Published in Plumbing Repair 3 mins read

Air trapped in your water pipes can cause noisy plumbing, reduced water pressure, and even prevent appliances from working correctly. Fortunately, removing this air is often a simple DIY task.

Removing Air from Water Pipes: A Step-by-Step Guide

The most common method for removing air from water pipes involves these steps:

  1. Turn off the main water supply: This is crucial to prevent further air entry while you work. Locate your main water shut-off valve and turn it completely clockwise. ([Reference: cinchhomeservices.com, gallegosplumbing.com, firstam.com, assettplumbing.co.uk])

  2. Open all faucets: Open all faucets in your home, including hot and cold water taps, and any outdoor spigots. This allows trapped air to escape as water is reintroduced. ([Reference: gallegosplumbing.com, quora.com, reddit.com, epshawaii.com])

  3. Turn on the main water supply: Slowly turn your main water valve counterclockwise to restore water flow. Listen carefully; you'll likely hear gurgling sounds as air escapes the pipes. ([Reference: thisoldhouse.com])

  4. Let the water run: Allow all faucets to run for 10-15 minutes to completely purge the air from the system. If you recently had a water heater installed, focus on the faucets farthest from the heater first. For ranch-style homes, running the hot water faucet furthest from the heater for about 5 minutes can be sufficient. ([Reference: quora.com, epshawaii.com, reddit.com])

  5. Check for air pockets: If gurgling persists in certain areas, open and close those corresponding faucets repeatedly to encourage air release.

Troubleshooting Persistent Air Problems

If air continues to be a problem, even after following these steps, consider these possibilities:

  • Leaks: Air may enter through undetected leaks in your plumbing system. Consult a professional plumber to identify and repair any leaks. ([Reference: bellbroshvac.com])
  • Low water pressure: Insufficient water pressure can lead to more air entering the system. Investigate your water pressure and consult a plumber if necessary.
  • Recent plumbing work: If you recently had plumbing work done (e.g., water heater installation), air may be trapped in newly installed pipes. Allow extra time for the system to purge itself, and if problems persist, contact the plumber who performed the work.

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