Hi guys. Here's a quick diagram of our house to illustrate my point. Obviously it's simplified, but here it is:
We get pretty good water pressure in the kitchen, and it's great in the spare bath. However, it's pretty awful in the master bath. I just ran a bath in the master bath, and it's noticeably weaker than it was when we moved in 2.5 years ago. The master bath shower is just dismal - it's like a small insect is spitting on you, whereas in the spare bathroom it feels like a fire hose. It has been a gradual thing - it didn't happen overnight. I assure you that we aren't just imagining things. Also, I can swear that sometimes the water in the master bath doesn't get as hot as it does in the rest of the house, but that's another story.
We just got a new water heater a few months ago, so that shouldn't be the problem. Our house is only about 8 years old, so I wouldn't think it would be a bad pipe issue (or would it?). Also, our water bill hasn't gone up since we moved in (it averages about $25/month), so I don't think we have a leak. I spoke with our local water department in 2007 when we first really started noticing it, and they said that if the water on/off switch in the front yard is fully open (which it is), then there's really nothing they can do. Are there any other potential problems that could cause a loss of water pressure in only one part of the house?
We do have a pretty good home warranty that covers some plumbing issues, but I'm not sure they'd cover something this vague. Thanks in advance for any advice!