I haf the duct cleaning technician guys come out to my st paul home. The services i had done were my air conditioner cleaning and an a coil cleaning. I already had my duct work done by another service and they didnt do a very good job so the next time i need it clean, ill be calling these guys for sure. They cleaned everything very throughly and they were very persistant. Ill be returning my service with them whenever i need it cleaned. I would reccomend them to anyone!