Joe and Tibo did a great job with the sealing process. Joe explained what they were doing and generally how it worked to seal the ducts. They provided a report after completion showing the starting and ending leakage amounts. Since having our ducts sealed, we've noticed significantly higher air flow and the furnace and AC don't have to work so hard for so long. Our bedrooms are a consistent temperature throughout the year and don't flip flop based on the weather. Overall this was a great investment and I would highly recommend it to anyone.