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Old 06-27-2013, 02:34 PM   #61
Joeywhat
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Originally Posted by Pennut View Post
Cabin air filters make no sense IMO. Because as soon as you open a window, contaminated air gets in your car anyways, so what's the point of them really?
It's so all that crap doesn't accumulate in the system enough so that it damages moving parts and causes nasty odors...when you open your windows, you're just getting whatever is in the air at that point in time. If you haven't had a filter in there for 100,000 miles, you're blowing in all the crap that's been able to accumulate over the past 100K miles.

Also, when you recirculate the cabin air, having a filter there is beneficial if there is a lot of particulate matter outside so it doesn't get sucked into the cabin.
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Old 06-27-2013, 03:21 PM   #62
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Originally Posted by jimfocus View Post
How dirty is the cabin air filter at about 20,000 miles? I've been dreading doing mine. How long can it realistically go before changing?
Did you ever get it done? 20,000 miles is the recommendation, and for pretty good reason. It certainly does the job!
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Old 06-27-2013, 03:25 PM   #63
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Quote:
Originally Posted by Joeywhat View Post
It's so all that crap doesn't accumulate in the system enough so that it damages moving parts and causes nasty odors...when you open your windows, you're just getting whatever is in the air at that point in time. If you haven't had a filter in there for 100,000 miles, you're blowing in all the crap that's been able to accumulate over the past 100K miles.

Also, when you recirculate the cabin air, having a filter there is beneficial if there is a lot of particulate matter outside so it doesn't get sucked into the cabin.
I still remember my first car, a 1966 Plymouth Valiant. I couldn't believe all the small pieces of junk that would show up from time to time in the interior. I also DREADED going through clouds of dust - it wasn't like it all came in, but my eyes would certainly react (especially with freshly cut grass).

My allergies are much, much better in a car with a cabin air filter.
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Old 06-27-2013, 09:26 PM   #64
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Originally Posted by TboneZX3 View Post
By the same thought process, I suppose you would question the point of having filters in your home HVAC system.
There is a bit of a difference in this case in that the home filter cleans the air going INTO the system, while the car one cleans the air coming OUT OF it.
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Old 06-28-2013, 10:34 AM   #65
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Originally Posted by flyboyike View Post
There is a bit of a difference in this case in that the home filter cleans the air going INTO the system, while the car one cleans the air coming OUT OF it.
I was under the impression that it works the same as a home HVAC system - the filter being before the blower motor... though, I have been wrong before.
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Old 06-28-2013, 11:10 AM   #66
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... though, I have been wrong before.
As have I, I remember one time I asked a girl when she was due. Apparently I was wrong.
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Old 06-28-2013, 05:11 PM   #67
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Quote:
Originally Posted by flyboyike View Post
There is a bit of a difference in this case in that the home filter cleans the air going INTO the system, while the car one cleans the air coming OUT OF it.
I've never seen a cabin filter system that didn't filter air before the blower. Is the one in the MkIII different? Either way, the air is being filtered before exiting the vents, so the end result is the same. I don't believe the idea behind filter is to keep the blower from getting dirty, but to trap allergens and dust from being blown around the cabin.

My comment about home HVAC systems was in reference to this:

Quote:
Originally Posted by Pennut View Post
Cabin air filters make no sense IMO. Because as soon as you open a window, contaminated air gets in your car anyways, so what's the point of them really?
How would opening the windows of your car affect the functionality of the car's system any differently than opening the windows of your house would affect the functionality of the house's HVAC system?
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Old 06-29-2013, 11:17 AM   #68
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Quote:
Originally Posted by TboneZX3 View Post
I've never seen a cabin filter system that didn't filter air before the blower. Is the one in the MkIII different? Either way, the air is being filtered before exiting the vents, so the end result is the same. I don't believe the idea behind filter is to keep the blower from getting dirty, but to trap allergens and dust from being blown around the cabin.

My comment about home HVAC systems was in reference to this:



How would opening the windows of your car affect the functionality of the car's system any differently than opening the windows of your house would affect the functionality of the house's HVAC system?
I thinks it's there as much for the passengers as it is to protect and keep clean the inside of the hvac system. Actually...prob more of the latter.
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Old 07-01-2013, 02:19 PM   #69
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Quote:
Originally Posted by Shantheman2012 View Post
I thinks it's there as much for the passengers as it is to protect and keep clean the inside of the hvac system. Actually...prob more of the latter.
Well, if what flyboyike is implying (the filter is after the blower) is true, then it's not doing much of the latter.
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Old 07-01-2013, 09:09 PM   #70
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Quote:
Originally Posted by Pennut View Post
Cabin air filters make no sense IMO. Because as soon as you open a window, contaminated air gets in your car anyways, so what's the point of them really?
i don't open my window because it get too much dust inside, used to have my windows down all the time , but the quality of music becomes crap while the window is down and i'm sick of constantly cleaning the dust off of my dash , also what is the point of having the A/c if i don't use it?

Took me 4 minutes to change mine
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