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  1. #1
    Join Date
    Aug 2012
    Location
    hanford ca
    Posts
    35

    pleat filters how often to change

    how often should pleat filter be changed? seems like airflow is affected within a couple of weeks.

  2. #2
    Join Date
    Jul 2011
    Location
    East coast USA
    Posts
    973
    If you had a Manometer you could check pressure drop, that's the best way. if you feel a difference after two weeks and the filters don't seem dirty and if you can see light threw it, they most likely are still Ok. You may have dirty coils or something else going on. When was the last time you did a Check up?

  3. #3
    Join Date
    Aug 2012
    Location
    hanford ca
    Posts
    35
    the filters do get dirty they do there job but was thinking about adding a electronic cleaner to cut down on pm

  4. #4
    Join Date
    Jul 2011
    Location
    East coast USA
    Posts
    973
    it depends on the air your trying to clean, how dirty is this place.


    what kind of system are we talking about and size of unit?

  5. #5
    Join Date
    Aug 2006
    Location
    Columbus Ohio
    Posts
    2,008
    Your question is entirily dependent on what sort of atmosphere your filters are used in.

    Sawmill, once a week.

    Medical lab, once a month, if that.
    UA LU189

    10mm, because it's better than .45acp

  6. #6
    Join Date
    Aug 2012
    Location
    hanford ca
    Posts
    35
    worm farm lots of sawdust

  7. #7
    Join Date
    Aug 2006
    Location
    Columbus Ohio
    Posts
    2,008
    Quote Originally Posted by dogheads View Post
    worm farm lots of sawdust
    You just answered your own question.

    Funny I said sawmill because that is the worst place I had ever seen for abuse on filters, you came back with worm farm, lot's of sawdust.
    UA LU189

    10mm, because it's better than .45acp

  8. #8
    Join Date
    Aug 2012
    Location
    hanford ca
    Posts
    35
    well i knew it was bad but trying to find way to cut down on pm owner dosent seems to think i should have to maint every 2 weeks any input would help

  9. #9
    Join Date
    Jul 2008
    Location
    Rochester NY
    Posts
    4,729
    Tell him you could come less, but the repairs are likely to cost more than the maintenance, and be much less convenient.

    Prefilters? And maybe media filters?

    Why can't he change his own filters?
    Which makes more sense to you?
    CONSERVATION - turning your thermostat back and being uncomfortable. Maybe saving 5-10%
    ENERGY EFFICIENCY - leaving your thermostat where everyone is comfortable. Saving 30-70%

    DO THE NUMBERS! Step on a HOMESCALE.
    What is comfort? Well, it AIN'T just TEMPERATURE!

    Energy Obese? An audit is the next step - go to BPI.org, or RESNET, and find an auditor near you.

  10. #10
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    68,105
    Quote Originally Posted by dogheads View Post
    the filters do get dirty they do there job but was thinking about adding a electronic cleaner to cut down on pm
    You'll end up having to clean an electronic air filter/cleaner more often then you change pleated filters now, if your dealing with saw dust.

    Might want to try making a second filter bracket, and install rock catchers in them as pre filters.
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

  11. #11
    Join Date
    Feb 2009
    Location
    Tallahassee, FL
    Posts
    6,048
    Is the return grill deep enough to use a bag filter

  12. #12
    Join Date
    Jun 2003
    Location
    Madison, WI/Cape Coral, FL
    Posts
    6,446
    Using a piece of plastic tubing, make a utube mamometer with one end in the duct on each side of the filter. Mark the utube for .1-.2" WG pressure. Dirty filters that are large enough can be very dirty before changing. Double the size of the filter will extend the use time by a factor of +3. Dirty filters are better filters than clean ones.
    Regards TB
    Bear Rules: Keep our home <50% RH summer, controls mites/mold and very comfortable.
    Provide 60-100 cfm of fresh air when occupied to purge indoor pollutants and keep window dry during cold weather. T-stat setup/setback +8 hrs. saves energy
    Use +Merv 10 air filter. -Don't forget the "Golden Rule"

  13. #13
    Join Date
    Jul 2008
    Location
    Rochester NY
    Posts
    4,729
    ... With the exception being electronic filters.

    Dont the stop working effectively as they get dirty?
    Which makes more sense to you?
    CONSERVATION - turning your thermostat back and being uncomfortable. Maybe saving 5-10%
    ENERGY EFFICIENCY - leaving your thermostat where everyone is comfortable. Saving 30-70%

    DO THE NUMBERS! Step on a HOMESCALE.
    What is comfort? Well, it AIN'T just TEMPERATURE!

    Energy Obese? An audit is the next step - go to BPI.org, or RESNET, and find an auditor near you.

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