I have had a very interesting experience with Cupertino Plumbing. I have used them multiple times and their performance has been pretty inconsistent. The first time they came to do work in my home and they did a nice job. But the second time they came out, they didn't complete the job properly and a bit sloppy. They have attempted projects for me such as fixing water heaters. I know enough about the HVAC work to tell when something was wrong. I appreciate them coming out to take the time to do their job, but I have had some problems with just how the final results have turned out for some projects that a hired them for, so I'm a bit mixed about how I feel about them.