Ac freezing up 2013 Lennox 3.5 ton with matching 90+ furnace. Found contactor welded shut and condenser coil impacted with dirt. System is frozen solid from evaporator coil to ac unit and line set has been leaking onto plywood will attach pictures to invoice. Checked refrigerant levels found no refrigerant in circuit. Performed complimentary leak search found evaporator coil leaking in attic. System is zoned with single stage equipment when it should be modulating and system is basic builder grade.Due to equipment being over ten years old and manufacture warranty being expired equipment needs to be updated.