Performed first year furnace cleaning; started by inspecting the exhaust and intake PVC ensuring all connections were secured, I then removed and cleaned burners along with the flame sensor, next i sniffed out the gas line verifying no leaks, I then cycled the system on and checked gas pressures and did end up making an adjustment on first stage, lastly I ran a combustion test verifying no CO in the airstream as well as re did the drain line for better pitch. This system is currently operating normal at this time. Job complete