Keith L. at Carney was personable, thorough, polite and efficient. Keith was also very kind to my dog. Carney gave me a 12 to 4 time slot. At 11:30 they called and politely asked if they could come early. I was thrilled. They didn't try to sell me extra things like filters when they weren't needed. They ask about the status of your heat or A/C and listen to your answers. I had a great experience.