Maintenance: indoor unit was functioning properly. Blower motor amps were in range. Cleared drain lines and poured bleach down them as well. Re glued union fitting that was not glued properly. Duct work is getting old and showing signs of wear. Some runs go from flex duct to hard pipe and are not hung up properly. Recommend looking into replacement in the future. Outdoor unit. Unit was also preforming properly. Sub cool and pressure were in range according to the data plate. Capacitor and amp draws were in range as well. System producing a 17.5 split at this time. Conducted duct fogging as well.