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Posted by KJPRO on January 20, 2009, 12:04 pm
>> 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
Air Bear filters are manufactured by Trion Inc.
They basically have three different size filters,
16X25X5
20X20X5
20X25X5
The first two are rated at 1400 CFM and the last one is rated at 2000 CFM.
The 20X25 comes in two configerations, straight through and right angle. The
right angle is nice to use in a basement. It has a door in the front and
back, allowing the installer to install it on either side of the furnace.
This allows the user easy access to change the filter.
Here's a couple links to the companies website, so you can look over the
units.
http://www.trioninc.com/residential.asp
http://www.trioninc.com/pdfs/residential/AirBearSupreme/Air_Bear_Supreme_Spec_12_07.pdf
http://www.trioninc.com/pdfs/residential/AirBearRA/Air_Bear_Right_Angle_Spec_12_07.pdf
I would guess his installer changed his 16X25X1 out with a 16X25X5.
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> Black Dragon wrote: