I have a Bryant furnace, don't know the model number, but frequently the fan will continue to blow after the heat stops producing. I hear it trying to shut off, (it will sputter off and on) but the majority of the time the fan continues to run, blowing cold air. Any help would be appreciated.

Need moore info, how old is the unit, is the vent pipe metal or PVC.

The furnace is around 10 years old. THe vent pipe is PVC.

If the light isn't flashing an error code, the relay could be sticking. A rap with a screwdriver handle might unstick it. That doesn't fix the problem, it only identifies it, which you really want to do since replacing the relay usually mean the whole costly circuit board.

On the lower door on the furnace you should have a small round window. Look inside and count the blinks of the light. For instance 3 blinks pause 2 blinks = code 32.