A technician named Jul came to our home and spent about 8 or 9 hours here, some of that time with a partner, cleaning our ducts with a brush and vacuum. The previous owners of our home had a cat and we were having some issues. This service cleared all that up. Judging by the pictures he took, the ducts had never been cleaned and had layers of dust and cat hair and who knows what else, but now they look nice and shiny! I only wish they had sent some of the pictures over so I could show my wife. They were more expensive, but judging by others experiences with competitors, probably cheaper in the long run. They do it right.