Cleaned & checked gas furnace. Inspected heat exchanger & flue venting. cleaned burners & flame sensor. Checked voltage & amp draw of motors. Test capacitor. Checked filter. test humidifier. Customer changes water panels. Customer complaint of noise. I adjusted heating and cooling blower speeds to reduce noise. Blower: 1.5/2.1A . Inducer: 0.09/0.21A . Gas pressure: 2.0/3.2 inches water column. Temperature rise: 51/57 . Supply: 120/126 . Return: 69 .