After the installation of a new heating / cooling system, I decided to have the ducts cleaned. Somehow this had been overlooked during the 22 years we'd been living in our house. I had no idea what to expect. Jose and Brendon arrived on time and got to work. They were professional and answered all my questions. They were careful to protect our furniture and walls. For the cleaning, they put a rotating device, like a weed wacker, thru the vents and into the ducts. You could hear it scraping the metal as it traveled thru the duct system from one side of the room to the other. At the same time, a giant vacuum cleaner sucked up the dust and debris. In addition, Jose and Brendon scrubbed each vent cover before putting it back. It took about 6 hours to finish the work. Definitely, the ducts got a very thorough, deep cleaning. Before and after photos showed the difference. Wow! Outstanding service, worth the money. Thank you Jose and Brendon!