i have a goodman as well its approx 8 yrs. for the last few winters we;ve had nothing but problems with it.. its had a curcuit board replaced bc it just shut down. then it started to back fire, went through 3 ignitors in a week last winter. we r just getting really frusterated with this unit.. could there be a underling issue that could be causing all these problems?? we are considering purchasing a whole new unit.. but if there is someway we can save this unit we will try it.. thanks for any advice!