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Posted by greenhvactech on January 19, 2009, 9:11 pm
greenhvactech had written this in response to
http://www.thestuccocompany.com/hvac/Re-Furnace-Filter-Szie-36570-.htm :
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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
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> 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.