How To Replace a Faucet Aerator

A slow-flowing faucet is often the result of a clogged or malfunctioning aerator. This small device, located at the tip of your faucet, plays an important role in regulating water flow and conserving water. Fortunately, replacing a faucet aerator is a simple task that most homeowners can accomplish in minutes. In the video above, This Old House plumbing and heating expert Richard Trethewey demonstrates how to diagnose and solve issues with a slow-flowing faucet by addressing the aerator.

Understanding Faucet Aerators

Originally designed to create a clean stream of water and prevent splashing, faucet aerators are now an essential component in water conservation efforts. Aerators mix air with water as it exits the faucet, creating a smoother flow while reducing water usage. This design helps homeowners save on water bills without sacrificing water pressure. Additionally, aerators act as a final filter, catching debris that may have made its way through the plumbing system.

Types of Aerators

There are several types of aerators available, each designed to fit different faucet styles:

• Cache aerators: You can find these aerators inside the faucet spout. They require a special key for removal.
• Laminar flow aerators: These produce a clear stream of water without introducing air, ideal for healthcare settings.
• Low-flow aerators: Designed specifically for maximum water conservation, these aerators restrict water flow to as little as 0.5 gallons per minute.
• Standard aerators: The most common type of aerator, standard aerators screw onto the outside of the faucet spout.

Signs You Need To Replace Your Aerator

Here are some indicators that it’s time for an aerator replacement or cleaning:

• Reduced water flow
• Strange noises coming from the faucet when the water runs
• Uneven or splashing water stream
• Visible mineral buildup or debris on the aerator surface
• Water leaking around the aerator’s edges

Tools and Materials Needed to Replace a Faucet Aerator

Before you begin the aerator replacement process, gather the following items:

• Adjustable wrench
• New aerator
• Pliers
• Rag or washcloth
• Small brush

Steps To Replace a Faucet Aerator

Replacing a faucet aerator is a straightforward process that you can complete in about 10 minutes. Follow these steps for a successful replacement:

1. Unscrew the aerator from the end of the sink spout. If you can’t twist it off by hand, use an adjustable wrench or pliers. If you’re using pliers, protect the aerator with a rag.
2. Lay a washcloth over the sink drain and turn on both the hot and cold water to flush out the water lines. The washcloth will catch any debris or sediment.
3. Rinse the clogged aerator and thread it back onto the sink spout. You can also replace the old aerator with a new one.
4. Turn on the hot and cold water to ensure that the water flows smoothly.

Troubleshooting Common Faucet Aerator Issues

Here are a few issues that may arise during the aerator replacement process and how to address them.

Leaks Around the Aerator

If you notice water leaking around the edges of the aerator, check that the aerator is properly threaded and tightened. Ensure the faucet spout’s surface is clean and free from debris, as this could prevent a proper seal. Finally, inspect the washer inside the aerator for damage and replace it if necessary.

Continued Low Water Pressure

If water pressure remains low after replacing the aerator, follow these tips:

• Check for kinks in the supply lines under the sink.
• Consider that the issue might be with your home’s overall water pressure, which may require a professional assessment.
• Inspect the shut-off valves and ensure they’re fully open.

Difficulty Removing the Old Aerator

For stubborn aerators that won’t budge, apply a penetrating oil and let it sit for a few hours before attempting removal again. You can also use a hair dryer to gently heat the area, which can help break the mineral seal. For cache aerators, use a cache aerator removal tool for easy removal.

Maintaining Your New Aerator

To keep your new aerator functioning properly, follow these maintenance tips:

• Avoid using harsh chemicals that could damage the aerator’s components.
• Check for leaks periodically and tighten the aerator as needed.
• Clean the aerator by soaking it in vinegar every few months to prevent mineral buildup.
• Consider installing a whole-house water filter to reduce debris reaching your faucets.

Our Conclusion

Replacing a faucet aerator is a simple, yet effective way to improve your sink’s performance and conserve water. With just a few tools, you can restore proper water flow and potentially lower your water bills.