Acclaimed put in a new furnace for me two years ago, & just recently I had them come back to service the furnace and clean my air ducts. All the service people in the office and the technicians that came to my place were very professional, easy to talk to, answered all of my questions, put down coverings for the floors when & where appropriate, offered to take off their foot wear ( and some did anyways). My furnace is out on my balcony and since the foot wear was dry and clean I said it was okay to just walk the short distance in their boots etc.