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Posted by on August 24, 2007, 4:44 pm
> .p.jm@see_my_sig_for_address.com wrote:
> >
> > On Fri, 24 Aug 2007 12:41:03 -0700, taxenqs@yahoo.com wrote:
> >
> > >When a home air filter manufacturer recommends a filter change every
> > >90 days, what duty cycle do they assume the filter wil be used?
> > >1 hour per day?
> > >10 hours per day?
> > >24 hours per day?
> > >
> > >I think they should list filter change recommendations in hours (e.g.
> > >filter good for 300 hours of use).
> > >(Some thermostats like my LUX have filter-life counters that show the
> > >number of hours the filter was used since it was last changed).
> >
> > How's about 'change it when it's fucking dirty' ?
> >
> > This will require FUCKING LOOKING AT IT once in a while, and
> > making a DECISION.
>
> Yes, looking at the filter periodically is a good idea. I've seen cheap
> filters that failed and periodic inspection would catch that and limit
> the damage.
>
> Beyond that, there are a few air filter monitors available that monitor
> airflow or pressure and indicate when a filter should be changed similar
> to the indicators on most truck air filters these days.
I think everybody should install a Dwyer Magnehelic.
Then, they will not only know when it's time to change the filter, but
they'll know if they have a shitty duct system.
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