Filters don't fit in Carrier 58DXC


  #1  
Old 11-24-21, 01:59 PM
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Filters don't fit in Carrier 58DXC

Hi, I recently bought a house with a Carrier 58DXC downflow condensing furnace and have realized that there are no filters installed. The manual shows that two 16x20x1 filters must be inserted through the blower compartment and installed leaning against the walls of the return air plenum above. However, there is nowhere near enough space in the blower compartment to allow a filter of this size through. Guess I know why the previous owners didn't bother!

Do I try a smaller size (for a less upright lean), or is there a better solution? I'm including a photo of the blower compartment and the filter diagram. The bottom filter edges are supposed to rest on the metal brace across the top of the compartment.

Thanks in advance for any suggestions.



 
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Old 11-24-21, 03:49 PM
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Wow..... that is pretty lame and hard to get to.
It looks like a smaller area than 16x20.
What is the opening on each side ?
Is 20" the front to back measurement ?
 
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Old 11-24-21, 04:08 PM
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Note says filters are in the plenum, not the blower compartment. What does it look like above the furnace?
 
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Old 11-24-21, 04:20 PM
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That's supposed to be a downflow furnace which means the burner is under the blower.
The filters should be where the yellow lines are.


You can use duct tape in the center of the filter attached to the front and back and folded like a handle.
 
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Old 11-24-21, 07:23 PM
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Yes, the 20" is the front to back measurement. The blower compartment is just barely 16" tall, so the filter could theoretically slide in vertically along the left side of the blower if not for the multiple wires in the way.

Definitely no access to the plenum from above:


I'm wondering if there would be any harm in trying narrower filters, say, 12x20x1s. If I can actually get them in there, they would just lay flatter in the plenum than the 16x20s. Would that be any cause for concern?

Here are the instructions from the manual, for what they're worth. The referenced cleanable filters are long gone if they ever existed.


 
  #6  
Old 11-26-21, 05:46 PM
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The first one like that I encountered left me thinking they wouldn't fit. -Except that I could see the old ones did-. Concentrate on getting the right one in first, then the left. The filter arrows should point down and after you do it once the next times are easy. I never needed tape of any type.
 
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Old 11-27-21, 12:23 PM
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Yes..... you don't need to use any tape but it makes it easier for many people... including my customers.

Take a 3-5" piece of duct tape. Attach it to the front and back of the filter and fold in half.
Makes a handle to help get the filter in it its proper location.

 
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Old 11-27-21, 04:58 PM
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Different model#, but same procedure.
https://www.youtube.com/watch?v=43jRKTrgMUs
 
  #9  
Old 11-27-21, 07:29 PM
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May have return grill filters installed. That unit looks pretty clean to have never had filters.
By the way, youíll want to get that unit checked out. Itís on the class action lawsuit list for faulty secondary heat exchangers.

http://hipspro.com/pubs/Furnace-clas...led_notice.pdf
 
 

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