Contacted resident Gave filters to resident as per request Went to roof South unit Cleaned electric compartment Checked all wiring, good Checked heat exchanger, good Checked temperature rise rated 30-60 Supply air 127 Return air 77 Rise of 50,good checked safety's Unit running as per manufacturer's specifications North unit Cleaned electric compartment Checked all wiring, good Checked heat exchanger, good Checked temperature rise rated 40-70 Supply air 138 Return air 75 Rise of 63,good Checked safety's, good Unit running as per manufacturer's specifications