I recently had a problem with my air not working so I called a local company for a service technician to check it out. They informed me that the outside unit was bad and it would cost me about $2,500 to repair. My unit was still under warranty so parts would be covered but it would still be two days waiting on parts and around $900.00 labor. I called Ronald Cox for a second opinion, he was at my house within a couple hours and 15 minutes later my air was working as good as new. It ended up being a $20 part!! I highly recommend Cox Commercial for all your heating and air needs.