Furnace Filter Replacement?

Old 02-19-05, 03:28 PM
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Question Furnace Filter Replacement?

Hey all, got a question about a Ruud Rheem UGUD-095C-ER . Does this unit require 2 filters ?? there were 2 boxes of filters by the furnace- large and small. I found where the large ones 20 " go but the box of 10" ones confused me. thanx
Old 02-19-05, 07:35 PM
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it depends on how it's set up.. Is this an upflow or downflow? Some downflow system needs two filter to fit around the flue pipe. Some time it sits like upsidedown "V".

Post back on what you got for air flow first.
Old 02-19-05, 08:46 PM
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Unhappy Updraft Or Downdraft ???

THAT IM NOT SURE OF. I can tell you its in the sub basement and not in the attic. would this be considered an updraft then. Its not y shaped either. Its about as long as a car and half the width. Do I make any sense ?? thanx

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