OMG-these are the guys! They called when they said they would, they got there right on time, they were courteous, clean, and just ON IT. They didn't try to sell me anything). They told me everything they were going to do and proved to me that my motor really did need to be cleaned by taking it out and showing me the buildup. In the end, Mark took me around and showed me ways to keep my house cleaner by shoring up some areas on my furnace and on my heat registers... THESE ARE THE GUYS!