Upon arrival systems were on cool but due to smart programming and outdoor temperature thermostats were satisfied. Asked homeowner for filters to change and bleach He mentioned filters have already been changed and provided me with container of bleach Homeowner also mentioned that one system has been dripping water out of the side of the home Turned thermostats down to kick systems on and went into attic Started with checking deltas for downstairs system which had a great 20° Delta and upstairs had a great 19° Delta Opened furnace and checked electrical components and blower wheel, all in good condition Checked Evap coil and plenums also looked clean and in good condition Switched to upstairs unit and findings were the same, blower wheel clean and in good condition and evap coil clean and plenums also clean. When testing drain lines I noticed there were no back ups on either system which led me to believe clog was more internal Moved to outdoor condenser units checked dual run capac