[jnaas2]

It could also be an old main thats full of rust, or like the last house I went to that they had installed a new 1 inch main and there still was a low water pressure problem, when I asked the homeowner a stupid question on the whole house filter if it had been replaced, He said it was new. After checking the whole house water lines for valves that might be closed I asked him if I could remove the filter just for the fun of it and he informed me it was a waste of time but go ahead.You know the water pressure was great after removing that new water filter, so sometimes it can be something simple, so try them first before you jump feet first into the big money