Been doing business with Millers for years, and I can't say enough about their technicians. I've had 4, and they are all very knowledgeable. 2/15/2017 - James is the "best". He dis assembled the entire guts of my 24yr old furnace, and showed me everything that might or could cause problems in the near future. Cleaned everything up, put it back together, and then we discussed meeting with a "comfort advisor", to go over options for better efficiency. I also joined their "World Class Club", for peace of mind for my heating/air conditioning systems.