Mike and Sean just came by for our annual duct cleaning and, once again, I could not be happier with their service. They were prompt, professional, and even helped fix an issue with a loose vent cover (the plaster where the screw goes in had been stripped).
I told them I have two cats I didn't let out and they were exceptionally conscientious about that, always making sure the cats were accounted for or in another room with a door shut before opening the front door to bring equipment in and out. To me, that's the definition of customer service and professionalism.
The fee is the cheapest we've ever found since shopping around two years ago, but this is one case in which you don't get what you pay for, you get far more. We plan to stick with the company every year for the next 27 years of our mortgage and would gladly recommend them.