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Posted by on February 3, 2007, 3:14 am
>
>>
>> On Fri, 02 Feb 2007 02:04:42 GMT, gofish@gonefishin.net wrote:
>>
>> >
>> >>
>> >>>We call the filters you've been using rock stoppers. Lay the filter
>> >>>on its side and shake some salt over it. Virtually all of it will
>> >>>pass through.
>> >>
>> >>And how many cotton balls pass through? For that matter, how much salt does
your
>> >>fan push?
>> >>
>> >>Fiberglass filters may not trap pollen, but when you look at the amount of
>> >>unfiltered air infiltration into the average home, spending $$ on ultra
>> >>efficient, surgical grade filters that only work when the furnace fan is
running
>> >>may not make sense...
>> >
>> >
>> >its a well known fact in the industry that the dirtier a fiberglass
>> >filter gets, the more efficient it becomes. Look into the
>> >manufactures specifications on a fiberglass filter. Most are rated at
>> >8-10% efficient, meaning 90-92% of everything passes right thru them.
>> >
>> >The first thing impacted is the blower motor. Dust, lint & furballs
>> >soon plug the open frame, blocking required airflow thru the motor.
>> >The next thing imapacted is the blower wheel blades. these load up,
>> >adding drag on the motor and the blower wheel cannot push as much air.
>> >
>> >Typically the next thing is the ac coil, then all the supply air
>> >ducts. Personally I LOVE the consumer who insists on the cheap fbg
>> >filter, because that guarantees me the high dollar motor, blower wheel
>> >and coil cleaning.
>> >
>> >If you insist on going cheap, at the very least use a 1" 3M pleat sold
>> >at most homo cheapo's.
>>
>>
>>
>> And then the problem with the pleated 1" filters is the duct system
>> hasn't been designed for the high resistance of the filter when new
>> let alone after they've loaded up so the coil freezes or the high
>> limit on the furnace keeps shutting it down. Damn, Fish, you're still
>> looking for the high dollar repairs. :)
>
> This is so true for the homes built by the low ball contractors. The HO
moves in and decides to get a better
>filter and for the next 5 or 6 years he is running his unit at a SP of .7 or
.8. Then the problems start to show... :(
>
> Joseph
>
> Fixed that top post problem for ya, :)
>
>
>
>
>
Thanks Joseph for fixing Steve's 'broken top post'.
Be sure to send him your invoice.....
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