I used A-Assured for my parents place when thier furnace died out on them. They provided them with an excellent product and better yet excellent service. Parents usually don't give me a lot of praise but they did when I hired A-assured for them.
Specialize in new residential plumbing, but I still called them to do my basement rough-in and install plumbing fixtures. They were able to accommodate my schedule and was in and out in the matter of hours. When I had concerns with some plumbing their service arrangement was within 24hrs.