Delta T is 20 degrees. Changed air filter. Checked indoor voltage enhancement system and is within factory spec. Electrical connections are tight. Purged and flushed water removal system. Outdoor voltage enhancement system is within factory spec. Outdoor performance enhancement system is within factory spec. Amp draws on the outdoor unit are good. Sprayed off the back of the outdoor unit. WD40 wipedown on the outdoor system. Cleaned dout debris from bottom of outdoor unit. Operation normal at this time.