Arrived onsite customer has a 5 year old furnace. Wanted a check up performed on the furnace. Checked flame sensor, a good range is 1.5-3.5 micro amps dc, flame sensor was reading 2.2 micro amps dc. Confirmed operation of HSI Checked inlet and outlet gas pressure. Inlet gas pressure is 8.79 inches WC. This is right within in the range for Natural gas. Outlet gas pressure was 3.4 inches wc, this meet manufacturers requirement for natural gas. Checked amp draw on inducer motor, it is rated for 0.7 amps. It was pulling 0.21 amps, this is below the 0.7 amps meaning it is not over working. Checked amp draw on blower motor it was pulling 5.79 amps. Rated for 6 amps. Meaning it is not over working. Confirmed condensate drain was working properly. Temperature split between supply and return was 35 degrees. This is a good temperature split. No carbon monoxide was present in the duct stream. Checked capacitor, it is rated for 10mfd plus or minus 5% the measurement was 10.18 mfd. which is with