Did a maintenance on a newly installed Goodman furnace. Change out to 16 x 25 by one filter. Also dusted off the whole unit and the inside as well as the burner box and the blower motor housing. Also did an amp reading on the inducer motor and blower motor which both meat for specs Also did a combustion test the C0 level was he in the O2 level was 19. Also cleaned off the flame sensor. System is operating properly at this point. M#GMEC800804BN s#1911176801