If you have a mini-split AC in Riverside, CA that’s acting up, call Top Air Heating & A/C immediately. Avoid waiting to see if the problem might go away on its own. It usually won’t. In the meantime, your cooling costs can rise from the decreased efficiency of the unit. The problem can also lead to increased deterioration of your ductless air conditioner. You may spend much more on repair costs or even have to replace your system prematurely.