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Where is my a/c filter?

This may be impossible to answer without seeing first hand, but I'll give it a try. I recently moved into a home that has central air. It's a pretty old unit (circa 1983?), up on the rooftop. BDP (Carrier) model 585CJ030050. Yes, it is old and needs to be replaced, but let's put that aside for now. I know the filter must be due for cleaning and/or changing. But I can't find the filter! First I checked the intake -- the only large vented opening inside the house. I removed the vent cover, and it's just big empty space... no place for a filter, nothing! So I went up on the roof, looking to see if the filter was in the rooftop unit. Nope. Every side panel seems permanently bolted on, and I couldn't find anything that moved or lifted out of the way. Am I missing something obvious? I'd hate to pay for a service call just to locate the filter, but I'm almost to that point!

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  • draccy Jun 14, 2008

    Thanks -- found it! It was well-camouflaged!



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If your rooftop unit is self contained with no pipes leaving it except the condensate drain line there should be a narrow removable panel to access where the filters are located. If you have three pipes exiting the roof top unit two will go to an air handler located in the attic of the home. The filters will be located in the air handler.

Posted on Jun 13, 2008

  • James Helmer
    James Helmer Jun 14, 2008

    It's nice to be needed. You are welcome.



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