Okay, I didn't see this anywhere on the site. I have low water pressure downstairs only on the hot side (kitchen and bathroom sinks). It was never a problem before. I cleaned the screens but no luck. I think there must be something in the hot water pipe and one pipe must feed the entire downstairs and the upstairs is on a different pipe. Am I right? If so how do I fix this? The house is 12 yrs old.