Arrived at customers residence and was greeted by the customer and was led to the thermostat and put thermostat in cool mode and it is functioning properly.inspected 20x25x1 filter and it is dirty and replaced filter with customer purchased filter at this time. Tape and duct work joints are tight and neat at this time and without any visible defects or issues. Refrigerant lines are tight and neat and Arma flex insulation is intact and without any visible defects or issues at this time.inspected 4 inch metal flue pipe and it is tight and neat every joint is attached by 3 screws per joint at this time. Inspected Ez trap safety switch on primary drain and it is functioning properly at this time. Inspected CS1 attached secondary drain port is functioning properly at this time. Gas line is tight and neat and each joint and fitting is tightened and doped properly at this time. Inspected manual gas shut off valve and it is functioning properly at this time. Control board is functioning prope