We have been using Sem's Duct Cleaning services for many of our properties for general duct cleaning, sanitization, and furnace repairs. Their overall customer service has been beyond our expectation. Technicians are professional and arrive on time using high quality equipment in addition to their customer service representative Billy who has always provided exceptional customer care. As a business owner, we appreciate doing business with a company who understands our needs, is well organized and gets the job completed as efficiently as possible. Sem's Duct Cleaning comes very highly recommended. Thanks you for always proving exceptional customer service.