it's rare to find a service company that performs this well. I manage a 19-unit building in Buena Park and this is the second time in 3 years that we hired LA Duct Cleaning to clean the main air ducts and service the individual dryer supply vent. Alex and Jose are thorough, professional, and excellent to work with. if they see a connection that's not quite right, they fix it. they disconnect each dryer from the main stack, clean the lint from the discharge line to the trunk, clean the dryer lint stuck inside the dryer, reconnect, test, etc. they're working in tight quarters and do whatever is required to get the job done right. These guys are pros and I highly recommend them.