Our technician, Brian Miller, was thorough and complete in his tune up of our two furnaces. The older model needed more work and he walked me through the recommendations of what it could potentially use to extend its life. There was no pressure to do any of the suggestions if I did not feel it was warranted at the time. He was very personable and did great working in our basement along side my toddlers who were very inquisitive as to what he was doing. Because he was doing two furnaces, the tune-up took a little over two hours though the newer furnace was much quicker.