Another major service that we are happy to provide for our clients when it comes to the ductless mini-split air conditioning unit is timely repairs, as well as any other ductless mini-split service you may need for your Denver property! Serving the greater Denver community since 1976, Controlling Systems, Inc. is well known for our professional and thorough services when it comes to our ductless AC repair and any other ductless mini-split service that you may need performed!