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Old 04-09-2011, 02:54 PM   #1
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Furnace filter recommendation?


For several years I've been using 3M's BETTER Air Filters with Micro Allergen Extra Reduction. I've used these on a Goodman gas furnace where the filter is mounted on two return ducts, instead of the furnace itself. I was recently told that this type of filter may be too restrictive, which is causing my system to short cycle.

What brand/type of filters are best for my setup?

Thanks.

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Old 04-09-2011, 04:08 PM   #2
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Furnace filter recommendation?


True Blue pleated Merv 7 or Merv 8. Available at HDepot in Canada. Not sure if the US stores stock the same product line.

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Old 04-09-2011, 04:34 PM   #3
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Furnace filter recommendation?


In the U.S. they are in green packages at the HD. After dealing with the performance of the restrictive performance of the 3M Filtrate, I switched a few years ago to the Merv 8 filters to avoid choking the system.

I have a slight allergy to cats, medium to ragweed/goldenrod and severe to horses. Fortunately, no horses in the house and my 2 large, black cats never bother me and my filters are quite clear when I change them every month or two. I run the fan 24 hours for 5 months when heating/circulating and on automatic when cooling.

Dick
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Old 04-09-2011, 05:04 PM   #4
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Furnace filter recommendation?


What size furnace, and what size are the air filters?
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Old 04-09-2011, 05:13 PM   #5
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Furnace filter recommendation?


Quote:
Originally Posted by beenthere
What size furnace, and what size are the air filters?
Not sure of the furnace size, but one filter is 25x25 and the other is 14x14.
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Old 04-09-2011, 05:17 PM   #6
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Furnace filter recommendation?


Depending on furnace size, and return duct size, the 2 filters may be large enough that you canuse those filters without adverse effect.

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