A/c maintenance in flowery branch. 4 system maintenance, 1st unit is located in the attic. Blower wheel is clean, evaporator coil is clean, flush drain line, changed filter. System is cooling at this time. 2nd unit is in the attic. Blower wheel is clean, evaporator coil is clean, drain line was flushed, changed filter. System is cooling at this time. 3rd unit is in the basement, blower wheel is clean, evaporator coil is clean, flush drain line, changed filter. System is cooling at this time. 4th unit is in the basement, blower wheel is clean, evaporator coil is good, flush drain line, changed filter. System is cooling at this time.