I've used Preferred Plumbing for a number of things. The big thing I had them do recently was a complete change out of the two air conditioners and two furnaces in the house. They did it all in under two days. They were very concerned about cleanliness, and they wore shoe covers every time they came in the house. Everything was done, and everything works. Then, about two weeks after, I had a garbage disposal redone. They were here and gone in about an hour, and that worked great too.
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