Having never had this service done, I wan't sure of what to expect. My expectations were exceeded! Sani and Lucas were absolutely awesome. They worked non-stop for 8 hours on a very hot day cleaning 2 furnaces and air ducts. Both Sani and Lucas took the time to explain what they were doing and showing before and after photos. Having workers in home for 8 hours can sometimes be challenging, however, I felt very comfortable having this team doing the work. This was a great first time experience, but the team of Sani and Lucas made it exceptional.