Reply To: SIerra 18-5002 or 18-5006 are they identical

[billw]

I had recently wondered the same thing about Fastwins. I did notice that the earlier Fastwins that called for the 580321, came originally with a thicker coil lamination stack, than the later ones. Why the later models would require a higher capacity condenser with a thinner lamination stack is way above my pay grade.

Long live American manufacturing!