air filtration questions
#16
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wwest,
im a little confused now...
you said:
**********************
I use the home depot solution myself but I compress the accordion filter "folds" beyond their "native" construction. More folds per inch results in a lower flow resistance.
**********************
wouldnt increasing the fold's/inch INCREASE the flow resistance through the filter?
since you compress the folds you get more surface area (i.e. stomach lining or intestines) and thus more area for the air to pass through and thus more resistance? (although maybe better air filtration...)
and if you compress it further towards infinity the filter turns into a "solid" sheet of filter with the thickness = the length of the fold??? that would definatly increase the air flow resistance.
i was just wondering? maybe i misunderstood you or read that paragraph in the wrong way.
hey, if increasing the folds decreases flwo resistance im gonna try it out!
-paul
im a little confused now...
you said:
**********************
I use the home depot solution myself but I compress the accordion filter "folds" beyond their "native" construction. More folds per inch results in a lower flow resistance.
**********************
wouldnt increasing the fold's/inch INCREASE the flow resistance through the filter?
since you compress the folds you get more surface area (i.e. stomach lining or intestines) and thus more area for the air to pass through and thus more resistance? (although maybe better air filtration...)
and if you compress it further towards infinity the filter turns into a "solid" sheet of filter with the thickness = the length of the fold??? that would definatly increase the air flow resistance.
i was just wondering? maybe i misunderstood you or read that paragraph in the wrong way.
hey, if increasing the folds decreases flwo resistance im gonna try it out!
-paul
#17
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Increasing the number of folds increasing the overall cross sectional area providing more "openings" for airflow and thus lowering the resistance to airflow.
Unless you compress to the point wherein no, or very little, airflow can enter the "valley" of the fold.
Unless you compress to the point wherein no, or very little, airflow can enter the "valley" of the fold.
#18
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FWIW. The mention of activated charcoal filtration spawned a search from me and yielded this:
The original Dust Trap®, activated carbon absorber.
I measured the filter tray in my 02 RX.
Filter Tray: 8.5 x 9.25 x .75
Filter Media: 7.5 x 8 plus lip all around.
I sent the specs to these people. They only make 1/2", 1" and 2" Dust Trap® filters.
Here's their response: "The price for each pkg of 3 carbon dustrap filters 9 1/4 x 8 1/2 x 1/2 is $31.45 plus freight. The 1" is nominal size so would be a little smaller. Price is the same. If you want to place an order please call 800-875-3442.
Thanks
Cindy Pruitt
Air Filters, Inc"
The original Dust Trap®, activated carbon absorber.
I measured the filter tray in my 02 RX.
Filter Tray: 8.5 x 9.25 x .75
Filter Media: 7.5 x 8 plus lip all around.
I sent the specs to these people. They only make 1/2", 1" and 2" Dust Trap® filters.
Here's their response: "The price for each pkg of 3 carbon dustrap filters 9 1/4 x 8 1/2 x 1/2 is $31.45 plus freight. The 1" is nominal size so would be a little smaller. Price is the same. If you want to place an order please call 800-875-3442.
Thanks
Cindy Pruitt
Air Filters, Inc"
#20
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Very good work paddy.
The home page of the link says the filter should not be used for heat pumps. Since a heat pump is just another form of an air conditioner I fired off an email to get clarification.
I can't imagine why an air filter couldn't be used with a heat pump, or the heat pump in our cars which happens to be referred to most commonly as an air conditioner.
Worth asking.
The home page of the link says the filter should not be used for heat pumps. Since a heat pump is just another form of an air conditioner I fired off an email to get clarification.
I can't imagine why an air filter couldn't be used with a heat pump, or the heat pump in our cars which happens to be referred to most commonly as an air conditioner.
Worth asking.
#21
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Mr. West:
We've found in some instances over the years the dustrap is too restrictive for some heat pump units; we decided to note this for precaution purposes.
Sincerely,
Steve Byers
Air Filters, Inc.
We've found in some instances over the years the dustrap is too restrictive for some heat pump units; we decided to note this for precaution purposes.
Sincerely,
Steve Byers
Air Filters, Inc.
#22
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Originally posted by Paddy Wagon
FWIW. The mention of activated charcoal filtration spawned a search from me and yielded this:
The original Dust Trap®, activated carbon absorber.
FWIW. The mention of activated charcoal filtration spawned a search from me and yielded this:
The original Dust Trap®, activated carbon absorber.
Look in your local HD for it
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#24
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Here ya go paddy:
http://www.homedepot.com/prel80/HDUS...ductOID=180803
You want the second one down
http://www.homedepot.com/prel80/HDUS...ductOID=180803
You want the second one down
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#26
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You're right Port, their site is not very cooperative when cut-and-pasting links.
Here's the pertinent info:
Webfilter
Electrostatic Carbon Furnace/AC Filter
Model: #WABSORB
SKU: #115712
Simply search on SKU# and anyone can order from HD online, don't need a store near you.
Here's the pertinent info:
Webfilter
Electrostatic Carbon Furnace/AC Filter
Model: #WABSORB
SKU: #115712
Simply search on SKU# and anyone can order from HD online, don't need a store near you.
#27
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Originally posted by wwest
Pollen filter airflow resistance.
I use the home depot solution myself but I compress the accordion filter "folds" beyond their "native" construction. More folds per inch results in a lower flow resistance.
There can be no doubt that the 3M filter will be much more efficient than the rather expensive and flimsy one provided by Lexus. Therefore you may need to replace it more often. My Porsche 996 factory pollen filter is virtually a replica of the 3M and it was completely clogged at about 8k miles.
Pollen filter airflow resistance.
I use the home depot solution myself but I compress the accordion filter "folds" beyond their "native" construction. More folds per inch results in a lower flow resistance.
There can be no doubt that the 3M filter will be much more efficient than the rather expensive and flimsy one provided by Lexus. Therefore you may need to replace it more often. My Porsche 996 factory pollen filter is virtually a replica of the 3M and it was completely clogged at about 8k miles.
I just pulled the filter for the first time & it is pretty dirty - car is 2yrs & 8 7 month sold (only 9800 miles) so lots of city driving. Thanks for any input.
#28
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I have a related question... WHERE is the air filter?
I know it is supposed to be in the glove box or something, but it doesn't seem to be obvious.
Can anyone be more specific on what panel I need to remove to get at it?
How many screws and where?
Thanks in advance,
Ty
I know it is supposed to be in the glove box or something, but it doesn't seem to be obvious.
Can anyone be more specific on what panel I need to remove to get at it?
How many screws and where?
Thanks in advance,
Ty
#29
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Ty, yes, the filter is in the glovebox; here's a short tutorial:
No tools are required.
Inside the glovebox you will need to remove a long panel to give you access to the filter box behind the glovebox.
Behind that you will see the cover to the box that holds the filter.
Grab the two tabs that stick out and just pull the cover off.
![](https://www.clublexus.com/gallery/data/500/107filter_3-med.jpg)
Then you will be able to see the filter laying inside that you simply slide out and clean or replace. It's very simple - you'll see.
No tools are required.
Inside the glovebox you will need to remove a long panel to give you access to the filter box behind the glovebox.
![](https://www.clublexus.com/gallery/data/500/107filter_1-med.jpg)
Behind that you will see the cover to the box that holds the filter.
![](https://www.clublexus.com/gallery/data/500/107filter_2-med.jpg)
Grab the two tabs that stick out and just pull the cover off.
![](https://www.clublexus.com/gallery/data/500/107filter_3-med.jpg)
Then you will be able to see the filter laying inside that you simply slide out and clean or replace. It's very simple - you'll see.
![](https://www.clublexus.com/gallery/data/500/107filter_4-med.jpg)
#30
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Thanks... it really was pretty easy once I saw your photos. Filter was pretty nasty. Stores were closed, so I decided to try washing it in the kitchen sink for now. Might be my imagination, but car seemed cooler on the way to work this morning and on the way home. ![Smilie](https://www.clublexus.com/forums/images/smilies/smile.gif)
Thanks again,
Ty
![Smilie](https://www.clublexus.com/forums/images/smilies/smile.gif)
Thanks again,
Ty