I had a dual system set up in my house installed by AC Specialists and they did an excellent job of getting the systems in quickly and installed perfectly. I have had two occasions where I had to call about the units, the first was diagnosed over the phone with them as a blown fuse so I had my system back up and running quickly. The second was caused by a power surge at my house and once again the people I talked to were courteous and honest about when parts would be available for my unit. Everything was covered under my warranty and repaired as quickly as they could get the part. This company really treats their customers well and I highly recommend them.