I called Sterling Services since a friend recommended them. Dan was a friendly, honest, experienced plumber. Never pushy. He explained his work, taught me a thing or two about the soft water unit. What did he do? He put in a new circulation pump. When he didn't have one, he left and returned promptly with one. The work was completed the same day I set up the appt. He also relit the pilot on the water heater. I couldn't be happier with his work. I highly recommend this company!