A particulate air filter is a device composed of fibrous materials which removes solid particulates such as dust, pollen, mold, and bacteria from the air. A chemical air filter consists of an absorbent or catalyst for the removal of airborne molecular contaminants such as volatile organic compounds or ozone. Air filters are used in applications where air quality is important, notably in building ventilation systems and in engines.

Some buildings, as well as aircraft and other man-made environments (e.g., satellites and space shuttles) use foam, pleated paper, or spun fiberglass filter elements. Another method, air ionisers, use fibers or elements with a static electric charge, which attract dust particles. The air intakes of internal combustion engines and compressors tend to use either paper, foam, or cotton filters. Oil bath filters have fallen out of favor. The technology of air intake filters of gas turbines has improved significantly in recent years, due to improvements in the aerodynamics and fluid-dynamics of the air-compressor part of the Gas Turbines.

From Wikipedia under the GNU Free Documentation License
Wed Jul 28 09:23:32 2010

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From Yahoo Image Search: "Air filter"
Wed Jul 28 09:22:43 2010

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Kennel air purifiers 5 best features an air purifier for a ...

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Wed, 28 Jul 2010 12:30:32 GM

Pets of all kinds have made their way from outside into our hearts. So if it is necessary to board a pet owner have great expectations for a dog kennel that.

Improving air quality in your Indoor Air Purifier, more than one ...
airpurification.xeyes.net
Improving air quality in your Indoor Air Purifier, more than one ...

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Mon, 26 Jul 2010 14:28:41 GM

There are improvements on your air cleaning equipment, especially when a whole house . air filter. model. TakeFor example, the cleaning of heating and air conditioning can help eliminate the environmental toxic gases and HEPA . air filters. ...

My Life in Holland: Your Car Needs A Clean Air
mylifeinholland.com
My Life in Holland: Your Car Needs A Clean Air

FaYe

Sun, 25 Jul 2010 19:36:00 GM

The mechanic has to inspect the . air filter. , and change it if necessary during an oil change. The . air filter. is often neglected because it is just a simple thing or due to forgetfulness but it plays a big role in your car's performance. ...

From Google Blog Search: "Air filter"
Wed Jul 28 08:41:42 2010

TVR Chimaera 400HC 1995 M Plate - Power Steering - 45k Miles - Pistonheads.com
pistonheads.com
TVR Chimaera 400HC 1995 M Plate - Power Steering - 45k Miles - Pistonheads.com
Fri, 30 Jul 2010 16:07:49 GMT+00:00
Pistonheads.com Under the bonnet, there is a new distributor cap, new Magnacor leads, a new pipercross air filter and a smooth bore induction kit. ...
HISTORIC HEAT - The Daily News of Newburyport
newburyportnews.com
HISTORIC HEAT - The Daily News of Newburyport
Wed, 07 Jul 2010 08:16:18 GMT+00:00
The Daily News of Newburyport It couldn't be adjusted because all the buttons had broken off and the air filter had long ago disintegrated. With $250 from the $9000 "town clerk's ...
Tips to get better gas mileage from a four-wheel drive vehicle - Helium
helium.com
Tips to get better gas mileage from a four-wheel drive vehicle - Helium
Tue, 20 Jul 2010 16:36:40 GMT+00:00
Helium -Always make sure that the air filter is clean: It is a well known fact that you get better mileage with more air flow. -Keep you leg away from the brake ...

From Google News Search: "Air filter"
Sun Aug 1 00:00:38 2010

Can you clean a dirty air filter?
Q. The filter in my air conditioning/heating unit (in my apartment) is extremely dirty. Maintenance is supposed to come and change them once a month, but I guess they haven't gotten around to it this month. I plan on getting a new one soon, but I'm wondering - is it possible to clean them somehow, until I get a new one? I've noticed that since it has been dirty, the system is much louder (running the heat OR the a/c). Could this be due to the dirty filter, or may there be something else wrong with the system?
Asked by Delvala - Sat Mar 31 20:43:51 2007 - - 5 Answers - 0 Comments

A. Yes you can and it will help with the noise, if there is nothing else wrong with the system. Usually when air filters are dirty the system is stressing and working harder to suck in as much air as its shooting out cause it cant shoot out air if it can't suck it in to cool it down or heat it up. You can use a hose attachment on a vacume cleaner just be very careful and gentle the filters are easy to damage if there the cheap kind. If your vacum cleaner has a setting for low, use it. Another option is to clan off all the big stuff off the filter then use a can of air, ususally sold at computer stores or walmart in the electronics dept by their computer stuff, and blow all the dust off from both sides. You can also get old fashoined and… [cont.]
Answered by Armando H - Sat Mar 31 20:58:58 2007

What kind of air filter do I need for a 2000 Honda Civic Hatchback?
Q. I need an air filter and the wiper blade for the back window? Please show where you found the info too. Thanks!
Asked by er1k420 - Thu Jul 10 08:33:55 2008 - - 2 Answers - 0 Comments

A. auto zone or any parts store can help you out and heres a good site
Answered by kelly_f_1999 - Thu Jul 10 08:44:32 2008

It it harmfull to not have a filter in the air conditioner unit?
Q. I cant find a filter in any store thats small enough for this p.o.s. air filter.. though I'm sure theres one out there somewhere. ;) I'm moving in a couple weeks so I dont feel like replacing it but I havent had a filter in it for a month now... I cought a cold I dought it has anything to do with it but maybe it does. Anyone that knows something about this help me out?
Asked by a_houston05 - Sat Jul 8 15:56:44 2006 - - 2 Answers - 0 Comments

A. Eventually yes. The reason the evaporator will get filled with dust and restrict airflow. At some point the unit will continually ice up because of no air passing through it to carry the cold away (actually to provide nornmal air to the evaporator to be cooled)
Answered by M D - Sat Jul 8 16:02:49 2006

From Yahoo Answer Search: "Air filter"
Sat Jul 31 23:41:23 2010