My dad recently changed the filter on our American Standard Freedom 80 furnace. Today I noticed that our house is hazy and everything is covered with black suet. What's going on?!

Asked by Kathy on 11/30/2012 0  Answer

ManualsOnline posted an answer 12 years ago

The ManualsOnline team has found the manual for this product! We hope it helps solve your problem. Get the Manual Here

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