Filtering An Up Flow Furnace Without Filter Grills - HVAC - DIY Chatroom Home Improvement Forum

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Old 11-19-2008, 11:17 PM   #1
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Filtering an up flow furnace without filter grills

This is a question for all you pros out there. I'm wondering how you guys filter your furnaces, if your not using filter grills? Right now we build a 16x25 filter rack that attaches right to the outside of the furnace. It works okay but, I'm just curious about how other people do it. I love to learn better ways to do this stuff. Thanks.


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Old 11-19-2008, 11:20 PM   #2
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obviously its better to filter the whole duct system but theres nothing wrong with a filter at the furnace its been done that way for years(its cheaper and most "builders" do it that way)the only real job of the filter is to keep the equipment clean the fact that it somewhat cleans the air is just a bonus


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