how to get air out water pipes

3 min read 11-12-2024

Getting air out of your water pipes is a common plumbing issue that can lead to noisy pipes, reduced water pressure, and even a complete loss of water flow. This comprehensive guide will walk you through several methods to effectively remove trapped air and restore proper water flow. Knowing how to solve this problem can save you time, money, and frustration.

Understanding Air in Water Pipes

Air can enter your plumbing system in several ways:

New installations: When new pipes are installed or existing ones are repaired, air can become trapped within the system.
Leaks and repairs: Leaks can allow air to enter the pipes. Repairing leaks is crucial to prevent this.
Water pressure fluctuations: Changes in water pressure can draw air into the pipes.
Seasonal changes: As water temperatures fluctuate, expansion and contraction can cause air pockets.

Trapped air manifests in various ways:

Gurgling or hammering sounds: This indicates air moving through your pipes.
Reduced water pressure: Air pockets obstruct water flow.
Intermittent water flow: Air can completely block the flow of water.

How to Remove Air from Water Pipes: Step-by-Step Methods

Several methods can effectively remove air from your water pipes. The best approach will depend on the location and severity of the airlock.

1. Opening Faucets and Letting the Water Run

This is the simplest method. Simply:

Open all faucets in your house, starting with the highest points (e.g., upstairs bathrooms).
Allow the water to run for several minutes. This forces air out of the pipes.
Check for consistent water pressure and flow at all fixtures.

This method is effective for minor airlocks. If the problem persists, try the other methods below.

2. Bleeding Faucets and Fixtures

Many faucets and fixtures have built-in bleed valves or screws designed specifically for removing air.

Locate the bleed valve: It’s often located on the underside of the faucet or on the fixture itself. Consult your fixture’s manual if you're unsure of its location.
Open the bleed valve: Use a screwdriver or other appropriate tool. Allow water to flow until air stops escaping.
Close the bleed valve: Once the flow is steady and free of air, close the valve.

This method is highly effective for localized airlocks near specific faucets or fixtures.

3. Using the Water Heater's Bleed Valve (If Applicable)

Water heaters often have a bleed valve at the bottom to release trapped air.

Locate the bleed valve: Usually a small valve near the bottom of the water heater.
Open the valve slowly: Place a container beneath to catch the escaping water and air.
Close the valve once the flow becomes steady: Once air is no longer escaping, close the valve tightly.

Caution: Always use caution when working near a water heater as it is a source of hot water and potential burns.

4. Checking and Addressing Leaks

Leaks are a major cause of air entering the system. Addressing leaks is crucial for long-term solutions.

Inspect your plumbing: Check for visible leaks or signs of water damage.
Repair leaks promptly: Call a qualified plumber if necessary.

Regularly inspecting your plumbing system can prevent airlocks and other issues.

5. When to Call a Plumber

If none of the above methods work, or if you suspect a more serious plumbing problem (like a major leak or blockage), it's best to call a qualified plumber. A plumber has specialized tools and expertise to diagnose and resolve complex plumbing issues.

Preventing Air in Water Pipes

Preventing air from entering your pipes in the first place is the best solution. Here are some tips:

Regularly check for leaks: Addressing leaks promptly prevents air ingress.
Maintain consistent water pressure: Avoid extreme fluctuations in water pressure.
Proper installation: Ensure new plumbing installations are done correctly to minimize air trapping.
Winterizing your pipes: Properly winterize your pipes in cold climates to prevent freezing and potential air entry.

By following these steps and preventative measures, you can effectively remove air from your water pipes and enjoy consistent water flow. Remember, addressing the root cause of the airlock, such as a leak, is often crucial for a long-term solution.