The answer to 'pressure regulator clogged' is that a clogged pressure regulator is a common plumbing issue that can cause low water pressure throughout your home. This is typically caused by mineral buildup, debris, or corrosion inside the regulator. Symptoms include decreased water pressure, especially in showers and faucets, and the regulator may make a buzzing or hissing noise.
To fix a clogged pressure regulator, you may be able to clean it yourself if you're comfortable working on plumbing systems. This involves shutting off the water supply, removing the regulator, and cleaning out any buildup inside. However, if the regulator is severely clogged or damaged, it's best to have a professional plumber replace it to ensure proper water pressure and prevent future issues.