Philip came to give an estimate for duct cleaning in a post renovation older house. After a complete inspection and discussion with me, he said he would be able to complete the work himself during his visit. Philip is a supervisor who also trains other technicians so I was impressed with his friendly manner and knowledge. I was present during the entire operation and every question asked was properly answered and recommendations made as we proceeded. The work was thorough, neat and finished in 3 hours. I would highly recommend the Coit services for air duct cleaning especially if Philip is your technician.