Made appointment thru Broomfield office for electrical work to find out why lighting fixture did not work. We had used Cooper in the past to replace our old furnace & to up grade to a high efficiency unit plus add AC. It was done in one day-very proffesional. Great price and on going support & personal service. Hence I had them do my 92 yr old mom's & she loved them-same great professional work & service & provided her with a simple thermosat that she could understand. For my electrical work--found switch to be bad (50 yrs old) and at my request, replaced both 3-way switches plus the companion old switches in the same electrical boxes. Since there was time, I had 2 more old 3-way switches & 2 plugs replaced & fixed the wiring on another 3-way. Done in just 2 hours, plus (being an engineer) he explained & showed me how to do 3-way switches & was happy to answer my questions. I HIGHLY recommend Cooper--not the lowest price but by far the best work and quality for your money save none.