To add to my glowing review:
Keith and I were chatting while he was doing his prep work. I was griping to him about my parent's home where a number of guys had come through but the last one was able to find a block of wood within the furnace system.
Now in what can only be described as:
1) Keith's best magic trick in history or
2) the handi-work of a terrible furnace company that came in before him.
We discovered this piece of cardboard lodged near by furnace's burners. (iphone photo taken through the access hole that Keith had just made)
Needless to say it was due to the neglect of the 'new home cleaner' of our 6 month old house. Air Maids Cleaning can go pound sand.
Thank you again Keith!