Used this company for many years. Every single year I had problems especially with an AC unit they sold me.
I finally decided to get a new company in. During their assessment they realized that the parts Control Comfort Air has been adding to my unit and other areas of the house were all wrong and not made to fit my units, therefore causing all these service calls.
They also charged me (on top of the service call) to hose the top of my unit with my garden house attached to my house.
DONT TRUST THESE HACKS!