I used these guys on a free second opinion. My unit was 9+ years old. The other 2 companies out just tried to sell me a unit and told me that the compressor was bad. The tech explained to me that capacitors were bad, and not the compressor and actually had my unit running in about 20 minutes. I inquired about a new unit since I had already had prices from 2 other companies and these guys were about $1000 less than the other two. I decided to have the A/C and heat both changed as the furnace was older. They didn't even charge me for the repair and kept me cool over the weekend. The installation they did was absolutely fabulous! An outstanding job on install, cleaned up their mess and mess left by other people I had work on my system in the past. I give them 5 stars!