There are several reasons why your air conditioner is freezing up, including:nnDirty air filters restricting the air flownLow refrigerant caused by a leak from loose fittings, weak solder joints,nand othersnDirty evaporator coilnDefective blower motor or relay or motor that is not running at the proper speednnApart from changing the air filters, all these potential repairs would require the expertise of a professional technician. Get in touch with Cassel Home Comfort Heating & Cooling so we can troubleshoot the problem and correct the issue right away.