I had this company out to clean my dryer vent. They were right on time and explained everything thoroughly. I had to have them back out because another company misdiagnosed a dryer issue and said the airflow was restricted and to get the vent company back out. David was back out the next day, right on time and very professional. Went up on the roof to check the airflow, which was perfect. He explained everything to me, showed me that the airflow was good. I felt he was very knowledgeable and professional and trusted what he said.