King of NY
I found this thread today and was wondering if this question was ever answered. The largest Producer I ever met was Parker Family Maple in West Chazy. I bought a used RO from them a few years ago and was impressed with their opperation when I picked it up. I don't know if they are the largest at around 40000 taps but they are huge compaired to me.
Millbrook Maple
Catskill Mountains
Saphouse - Somewhere in witness protection area.
2.5 X 8 Smoky Lake pans on grimm oil fired arch
RO - Ecochem with 2 codeline vessels and 2 MES vessels.
2000-3000 Taps depends on the season.
Always looking for more sap!