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Thread: Using A Honeywell 20 x 25 x 4 Air Filter in Place of Aprilaire 213

  1. #1
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    Using A Honeywell 20 x 25 x 4 Air Filter in Place of Aprilaire 213

    I don't particularly like the Aprilaire 213 style foldable filter that came with my HVAC system, so I asked a technician if he could replace the filter enclosure/cabinetry with something that would fit a standard Honeywell box filter. He said I could slide a standard Honeywell 20 x 25 x 4 filter in its place. The box filter seems to slide in OK, but there is a gap at the top, as shown in the photograph. Is this really an OK fix? I feel like a lot of unfiltered air could go past.

    Attachment 818986


    Old Aprilaire Filter that I don't like:
    Attachment 818987Attachment 818988
    Last edited by Dad; 10-10-2020 at 05:40 PM.

  2. #2
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    The Aprilaire 213 is an excellent filter. Why do you dislike it?

    As for your question, air bypassing the filter is bad.
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  3. #3
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    I don't like the Aprilaire 213 because it looks like it also lets air pass it on the sides with this air cleaner box. Also, it is more expensive than a standard Honeywell filter and not universally available in stores, meaning I have to mail order one every time I replace it.

  4. #4
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    The filter is extra long so it forms a seal at the ends. IMO, the efficiency is worth the extra cost.
    As for availablitiy at stores, I agree that they are not available everywhere. I had to ask our distributor to start carrying them. Even so, I am pleased by the low pressure drop and I think that is a huge benefit for many systems. Before you reject them completely, I suggest you have someone measure the static pressure of your system. You may find that the filter is worth it in spite of what you see as drawbacks.

    I don't think you'll find a way to use other filters in that case. It will probably require installing a new case.
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  5. #5
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    Here's a possibility

    http://docs.electronicaircleaners.co...e_brochure.pdf

    They are considerably more expensive than Aprilaire, so not a help for that.

    But I think you're missing a spacer kit for that style cabinet, do you have the door spacer seal? Maybe that's what you meant about air passing the sides?

    https://www.airqualitysolutions.com/...r-cleaner.html


  6. #6
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    Quote Originally Posted by twillkickers View Post
    I feel like a lot of unfiltered air could go past.
    Yes, you would get way too much bypass as air will travel the path of least resistance. At a minimum, add some tape to better seal it up.
    Ian Cull, PE, CIH
    Indoor Science
    Chicago, IL

  7. #7
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    Quote Originally Posted by CHAINIK View Post
    Here's a possibility

    They are considerably more expensive than Aprilaire, so not a help for that.

    But I think you're missing a spacer kit for that style cabinet, do you have the door spacer seal? Maybe that's what you meant about air passing the sides?
    I actually have the spacer kit, but the Styrofoam spacer has completely disintegrated. Really cheap crap as far as I am concerned.

    I will definitely try that Honeywell pop-up filter and remove the spacer kit. I've ordered the Honeywell POPUP2200 .

    In addition, would it be possible for me to install one of the Honeywell F100F1625 Media Air Cleaner cabinets in place of the current filter cabinet? How difficult is changing the filter cabinetry?
    Last edited by Dad; 10-10-2020 at 05:22 PM.

  8. #8
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    I've installed the Honeywell POPUP2200 and I feel like it fits up a lot better. Doesn't seem 100% airtight but I believe it is the right one for this filter box. Let me know if you have any thoughts!
    Attachment 819141
    Last edited by Dad; 10-10-2020 at 05:40 PM.

  9. #9
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    That looks much better.
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    Find contractors with specialized training in combustion analysis, residential system performance, air flow, and duct optimization https://www.myhomecomfort.org/


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