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Thanks Loonie,

I assume the AUD and TUD models are just American Standard vs. Trane, is that right? So the TUD2C080ACV42A is what I need for the 4 ton system. And which coil should be matched...

Greetings all. Thanks, in advance, for your help.

Been following for a while and will try to post all relevant info but i'm sure I'll miss something so ask away.

I'm the homeowner and getting...