I've used Dipple Plumbing for my electrical work, all plumbing work and we've purchased our heating and a/c units through them as well. They are prompt and use high grade materials. Recently, I've had them to do a complete septic field replacement and they were very prompt, did what they said they'd do, and always got back to me with any questions or issues I've had within 24 hours or sooner. They stand behind their work and offer a longer warranty than any other vendor I could find.