In this video, This Old House plumbing and heating contractor Richard Trethewey cleans a plugged-up aerator to keep a bath faucet flowing.
- Unscrew the existing aerator from the faucet spout. If it's too tight to remove by hand, use an adjustable wrench or pliers.
- Cover the sink's drain hole with a rag, then turn on the water to flush out the faucet spout.
- Carefully thread a new aerator onto the faucet spout; tighten it by hand only.