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Posted by Zyp on August 29, 2007, 1:49 pm
Noon-Air wrote:
>> I have 3 returns in my house. I was told that I do not need an air
>> filter in my air handler which is in my attic if I have a filter in
>> the returns. However, when I had a filter in the air handler, I
>> noticed it was dirty....even though I had filters in all the
>> returns. So currently, I replace all 4 filters regularly. Is this
>> ok? I use MERV 8 pleated filters.
>>
>> I want to start using MERV 10 filters. Is it okay to still use one
>> in the main unit or is there a better practice?
>
> Make sure all of your RA ductwork is completely tight with no leaks,
> and you should only need the filters in the returns *OR* the filter
> in the air handler... not both.
Using high efficiency pleted filters will require changing often. Check
them each month and change when soiled. Eventually you will find a regular
schedule to follow that matches *your* life style.
Peleted filters offer some restriction to airflow [even when clean] and
having a high MERV rating means they will become soiled quicker [choking the
airflow as they become plugged with material.]
When you write your monthly check to the electric company - check your air
filter.
--
Zyp
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