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Posted by Black Dragon on January 21, 2009, 5:47 pm
KJPRO wrote:
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> I would guess his installer changed his 16X25X1 out with a 16X25X5.
Nope. Two 16x20x1 filters sat at an angle on two rails in a "cabinet"
next to the furnace. The installer removed the two angled rails, cut
a 25x5 hole in the side of the cabinet and installed 4 rails to accept
a 20x25x5 filter. I no longer need to remove the door from the cabinet
to change filters now, just slide them in and out from the side.
--
Black Dragon
Grabel's Law:
2 is not equal to 3 -- not even for large values of 2.
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> http://www.thestuccocompany.com/hvac/Re-Furnace-Filter-Szie-36570-.htm :
> -------------------------------------
> Black Dragon wrote:
>> ductape1 wrote:
>>> This summer we had a new Trane furnace and air conditioner
>>> installed. The
>>> furnace filter size was left the same size from the old unit. I
>>> was told
>>> by someone that when they had their furnace upgraded the installer
>>> redid
>>> the return for a larger filter. They told them that had to be done
>>> because
>>> there was more airflow.
>>> We had the same furnace installed but our filter size was left the
>>> same
>>> 16x25x1.
>>> Is this correct about the airflow? How do I know if we are
>>> undersized as
>>> far as the filter is concerned?
>> I had my HVAC contractor install a Trion Air Bear filter in my existing
>> system last spring. They said it was less restrictive than the pair of
>> 16x20x1's previously installed and that I wouldn't need to replace the
>> filter as often.
>> I was skeptical about the filter replacement since I have multiple pets
>> (5 cats) but it turns out they were right. I only need to replace the
>> filter twice per year, once at the beginning of cooling season and once
>> at the beginning of heating season. I used to replace the pair of
>> 16x20x1's (MERV 11's) once per month.
>> Now I've got better air flow making the system more efficient and
>> although the Air Bear filters cost more I'm not replacing them as
>> often which equates to money saved and a more comfortable house.
>> The cost of the Air Bear installation was reasonable and was money very
>> well spent. You may want to consider the same.
> what size unit is it and how many sqf is living area