NO COOL SYSTEM IN ATTIC. REMOVED APRILAIRE #201 FILTER WAS DIRTY. NEED TO REPLACE. FURNACE OPERATING NORMALLY. INSPECT AC. FOUND NO FREON IN SYSTEM. PRESSURE TEST WITH NITROGEN HOLDS PRESSURE. LEAK SEARCH FOUND NO LEAK. ADDED 8lbs R22 TO THE SYSTEM. ONCE FREON WAS ADDED SUBCOOLING OK SUPERHEAT HIGH. TXV ON EVAP COIL MAY FAIL SOON. TIME TO REPLACE. CUSTOMER SIGN UP FOR SMILEY CLUB ONE SYSTEM.