Adel and colleague came on time did a thorough job. They arrived promptly at 8 wore shoe covers, used floor and edge covering to protect the floor and corners. He explained what was done, made recommendations and was completed in 2 hours. I previously used another duct cleaning company with the acronym ODC who also did excellent work but their hours of operation did not fit my schedule. I decided to give 416-SO-CLEAN a try and will continue to use them going forward once they maintain the same competitive pricing and hours of operation. Just as with ODC, you can actually feel the difference in the air quality. I'll highly recommend this company.