While I believe most people think of "air duct cleaning " is a quick scam, this company is anything but! They spent 10 hours, not your typical hour a half cleaning. The second day, was a 12 hour day "sealing" our vents with a vinyl polymer. This prevents the tiniest of leaks coming out of the ductwork, therefore improving efficiency. My home feels cleaner and smells cleaner. I have severe asthma and this has made a huge difference in my health. The staff was extremely prompt, professional, and courteous. The priced quoted was the price charged. Couldn't ask for a better company or service!