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  1. #1

    So how DOES the coils get dirty

    is it JUST from neglect of the filter

  2. #2
    Join Date
    Jul 2009
    Location
    Houston,Tx via Wilmington,NC
    Posts
    59
    Not necessarily, If the filter is in a filter grille away from the unit any leak in the return duct can stop up a coil.

  3. #3
    Join Date
    Mar 2007
    Location
    West Palm Beach
    Posts
    172
    Not just that, it is also caused by the filter not fitting correctly and leaks in the return duct after the filter or gaps in the cabinet.

  4. #4

    So leaks help airflow (reducing energy use in short term)

    Quote Originally Posted by diesel65 View Post
    Not just that, it is also caused by the filter not fitting correctly and leaks in the return duct after the filter or gaps in the cabinet.
    but muss up the coil losing long-term efficiency.

  5. #5
    Join Date
    Jul 2009
    Location
    Houston,Tx via Wilmington,NC
    Posts
    59
    Or using the cheap blue filters that a bird could fly through.

  6. #6
    Join Date
    Jul 2009
    Location
    Houston,Tx via Wilmington,NC
    Posts
    59
    There are alot of reasons why a coil gets dirty.The trick is keeping it clean along with the air in the house.

  7. #7
    Join Date
    Mar 2007
    Location
    West Palm Beach
    Posts
    172
    Quote Originally Posted by AvantGarde View Post
    but muss up the coil losing long-term efficiency.
    Well now that just depends on where the leak is, if it is drawing in hot humid air (cooling) or cold outdoor air (heating) there is no energy gain short or long term.

    I like to think of a duct system the same as I do the refrigerant circuit, = Closed, no leaks.

  8. #8
    Join Date
    Aug 2009
    Location
    Baltimore, MD
    Posts
    30
    Quote Originally Posted by TxDusty View Post
    Or using the cheap blue filters that a bird could fly through.
    Unfortunately, Carrier provides a cheap blue filter that a bird could fly through with their air handlers and they say other ones will constrict air flow too much.

  9. #9
    Join Date
    Oct 2006
    Location
    The Beach
    Posts
    718
    By not cleaning the house, buying a filter that you can read a newpaper through. Not changing it as often as you should. Burning candles. Dryer vent leaking in the house. A lot of cooking with out a power vented hood over the stove. Not having it serviced at least once a year. Make sure there is no leaks in the duct work. And don't forget if you have any kind of animals (Dogs or cats) or birds in the house. Everything get dirty if it is not taken care of. Even a HVAC Pro.
    Last edited by lentz; 09-01-2009 at 06:22 PM.
    Blue Fox

  10. #10
    Join Date
    Apr 2004
    Location
    Muskegon, Mi.
    Posts
    425
    Pets and cheap fiberglass filters are a recipe for a funky coil.

  11. #11
    Join Date
    Mar 2008
    Location
    Central Maryland
    Posts
    246
    Quote Originally Posted by AvantGarde View Post
    is it JUST from neglect of the filter
    In my case, it was hiring duct cleaners.

    -HF

  12. #12
    Join Date
    May 2008
    Location
    Missouri
    Posts
    3,542
    I thought the reason that a person hired a duct cleaner was to clean the ducts and the coil??? There is more to this story I thinks!!!

  13. #13
    Join Date
    Aug 2002
    Location
    Office and warehouse in both Crystal River & New Port Richey ,FL
    Posts
    18,836
    Quote Originally Posted by alkydrinker View Post
    Unfortunately, Carrier provides a cheap blue filter that a bird could fly through with their air handlers and they say other ones will constrict air flow too much.
    No ,they say the ducts must be sized correctly,if you want a better filter.

    Tell me what brand's standard air handler comes with a better filter .

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