Did a AH on 7 yea old American Standard and 7 year old American Standard condenser and 1 year old Lennox furnace, checked capacitors, checked filters, flushed drains, checked flame sensors and ignitors, checked inducer motors,checked pressure switches, checked safety switches, found dual run capacitor was weak on south side condenser unit, recommended a membership, compressor saver, and replacing the dual run capacitor,customer said they had to talk to her husband and they would give us a call back about the membership and dual run capacitor