Cleaned the unit and fired it up. Been anywhere from the 30's-40's during the day and teens-20's at night. It seems as though the fan isn't quite pumping out the volume as before. I may cycle it off and tear it down and see if the fan is dirty or needs attention. This will be season 8 (if I recall) with this unit.
Well I had to order another distribution fan. This will be the third. I can tell the fan is on it's way out- the bearing is making all hells kind of noise and the velocity of the output air is dropping.
I can say that is certainly the weak link in this unit. This will be the third fan in 9 years. They run about $325 a pop too.