I recently had ACS install a Carrier HVAC system (furnace+A/C) in my house. From start to finish, they did a wonderful job.
Bid: After my initial call, Doug and Justin promptly came out to estimate the job. They arrived on time and quickly and efficiently examined the entire existing system including existing ducting under the house and in the attic (other contractors were not as thorough in getting an idea of the existing state of the system). Using what they learned, they prepared an initial bid that clearly explained our options and what each option would cost. They also adjusted the bids several times to incorporate our feedback.
Install: ACS is a union shop and the installers, Darren and Michael, were friendly, well-prepared, and really knew their stuff. They did a great job, including making sure that the house (particularly the hardwood floors) was kept as debris and damage-free as possible while flawlessly installing the system. They showed up when they said they would and worked hard all day to get the system finished by the projected deadline. Two great guys. On final inspection, the install met nearly all of the county inspector’s qualifications. Darren and Michael came immediately (i.e., the next day) to resolve the one or two trifling details that the inspector found. In addition to setting up reasonable financing terms and preparing the paperwork for us, Doug came back out after the job was finished to help with preparing refund claims for the union and PG&E.
Overall: A contractor that operates how contractors should operate; on time, on budget, professional, courteous, and knowledgeable. I highly recommend.