The two guys that arrived were very polite and professional. They got down to business and explained what they were doing as it went along. They worked hard and fast and did a great job. We hired them as we were getting a new furnace. The gentleman that did the install even commented on what a great job they did and said Prestige is the duct cleaner he prefers. No question that I will hire them again and recommend them to anyone that needs duct cleaning.