Posted to alt.home.repair,alt.hvac
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Home Air Filter change frequency
"kjpro "@ usenet.com wrote:
"Pete C." wrote in message
...
wrote:
On Fri, 24 Aug 2007 12:41:03 -0700, 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 ****ing dirty' ?
This will require ****ING 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 ****ty duct system.
Can you get a second mortgage for that Magnahelic?
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