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Old 09-13-2015, 02:07 PM   #1
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Are 16X25X4 filters universal size?


Hi guys, I bought a new house, with a closing date upcoming in about 2 weeks, during the home inspection the inspector showed me the current filter was CLOGGED, likely unchanged in the 4 years the furnace has been installed (likely because there expensive)

Anyways, I found them much cheaper online vs buying in the bix box stores, but the sizing is a little different, luckily he took alot of pictures and I can read the size of the filter currently installed in the furnace.



15 1/2" X 24 1/2" X 3 5/8"

And the ones Id like to purchase are Honeywells:
15-7/8" X 24-7/8" X 4-3/8"

The model number he wrote down for the furnace, I could find nothing referencing filter size

Model Number: GMVC950704CXAC
Serial Number: 1103103954

To me from the picture of the filter installed it looks like I may have enough room for the almost extra inch width of the Honeywell filters. Id like to purchase the bulk pack of 6 which bring the price to bout $15 each, but if they dont fit....

Cheers guys and thanks

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Old 09-13-2015, 02:24 PM   #2
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I don't think they're universal.

You could probably find a generic filter that's the same or a little smaller than the honeywell.

This furnace should be thoroughly inspected and cleaned as soon as the house closes. The heat exchanger, variable speed blower, or limit switch may have been damaged by the lack of maintenance.

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Old 09-13-2015, 02:29 PM   #3
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There are no universal size filters. That would imply, one size fits all furnaces. What there are, are various standard size filters.
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Old 09-13-2015, 02:36 PM   #4
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Request access to the house and take an actual measurement.
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Old 09-13-2015, 02:48 PM   #5
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We do have a visit but its not for another 10 days, was hoping to place the order before then

What I meant by universal size was, do all furnaces that require a 16X24X4 filter have an opening big enough to fit most if not all manufacturers slight differences in sizing.

If this honeywell I am looking at presumably would fit, than the one I am pulling out must not have been tight to the sides to create a good seal since there is a decent different in those measurements aswell. Does the model # give any sort of clue to needed filter size to the more veteran HVAC guys?

If I have to wait until I am able to return for another visit before closing to measure exactly, ive got no problems with that, not looking to waste any money, just looking to be a responsible first time home buyer
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Old 09-13-2015, 03:17 PM   #6
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There are 4" and 5" filter boxes. Honeywell is a HUGE company and I doubt they will label/build their 4" filter too big and have complaints. Are you sure the 4 3/8" is not describing a 5" filter?

Only way to know for sure is to measure the opening as those filter boxes are made by different companies and some may allow for a bigger than 4" filter and others not.
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Old 09-13-2015, 07:11 PM   #7
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It is indeed a 5" filter that I found, they had it in the 4" section though, back to hunting I guess
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Old 09-13-2015, 07:22 PM   #8
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They are expensive. You can get a 3 pack of the Trions for $60, which comes out to be around $20 a filter. http://www.amazon.com/s/ref=nb_sb_no...furnace+filter

Amazon is going to be your cheapest way to go.
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Old 09-13-2015, 08:44 PM   #9
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Are 16X25X4 filters universal size?


One additional factor is the MERV rating.

When you shop for big filters you'll have different MERV options.
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Last edited by djlandkpl; 09-13-2015 at 08:46 PM.
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Old 09-14-2015, 07:11 AM   #10
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Quote:
Originally Posted by djlandkpl View Post
One additional factor is the MERV rating.

When you shop for big filters you'll have different MERV options.
Good Point. That furnace has a V drive ECM motor so you can use a higher Merv filter. I would recommend a Merv 8 or 10. Anything higher and we would need to see the duct size if it is large enough plus they get very expensive.
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Old 09-14-2015, 08:27 AM   #11
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Home Depot sells a two pack of 16X25X4 Honeywell Merv 8 filters for about $38. That's what I use.
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Old 09-14-2015, 10:50 AM   #12
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Quote:
Originally Posted by kb3ca View Post
Home Depot sells a two pack of 16X25X4 Honeywell Merv 8 filters for about $38. That's what I use.
^^^ Me too. Once in a while, Home Depot puts those Honeywell two-packs on sale for a pretty good price, so when I notice that, I stock up on a couple sets.

Cheers, Chris
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Old 09-14-2015, 09:50 PM   #13
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Quote:
Originally Posted by kb3ca View Post
Home Depot sells a two pack of 16X25X4 Honeywell Merv 8 filters for about $38. That's what I use.
The problem is if you measure one of those 16X25X4 Honeywell filters, its really 15 3/4 X 24 3/4 X 4 3/8. I had a hellva time finding a generic replacement. I think Honeywell does that to thwart buying other brands.
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Old 09-15-2015, 12:36 AM   #14
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Quote:
Originally Posted by partner View Post
The problem is if you measure one of those 16X25X4 Honeywell filters, its really 15 3/4 X 24 3/4 X 4 3/8. I had a hellva time finding a generic replacement. I think Honeywell does that to thwart buying other brands.
They are already aware of the size of the filters. The reason for difference between the duct size and the filter size, is so that the filter can still be removed, even if the unit is running.
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Old 09-15-2015, 06:50 AM   #15
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Appreciate the information guys, unfortunately here in Canada hd charges $44 each for this size filter!!

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