Nothing but positives here. Paul and Johnny made short work of a ducting system that hadn't been cleaned in at least 7 yrs, and Lina's customer service was friendly and helpful. Paul recommended that we switch from an electronic air filter to a box media filter, so we're trying that for 6 months to see how it goes, and cleaned out the air conditioner coil as well. I pulled a linty dust ball the size of a newborn out of the return duct afterward. They did forget to patch a hole in the furnace wall, but they remembered, came back while I was back at work, and dropped off a piece of sheet steel and a little roll of aluminum foil tape for me. Awwww!
Thanks, guys!