First of all my experience with William on the phone was excellent. He was able to answer my questions about the process, about the products and about his experience with problems such as mine (hard wood floors are shrinking due to the dryness from heat in the winter time). My 2nd experience was with the installation guy (Raphael) who was: 1. On time, 2. Knowledgeable on the product he was installing and on all the pieces of equipment already in my furnace room. 3. Answered all my questions and said he’d have their office folks follow up with me on future cleanings and checkups on my system. I would recommend these guys to anyone!!!