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"Two activated carbon filters" - layers on top of HEPA? Or physically diff location?

Discussion in 'Model S' started by calisnow, Jan 26, 2017.

  1. calisnow

    calisnow Active Member

    Oct 11, 2014
    Los Angeles
    Do we know for certain whether or not the activated carbon filters advertised as part of the premium package are:

    1 - Not present in the non-premium package cars. I know the HEPA filter is not present but is there no carbon in the cabin air filter?

    2 - Are the carbon filters simply additional layers of filtration on top of the HEPA filter - and thus if you can get someone to sell you the HEPA filter and you put it yourself in the filter location (as seen on the thread "HEPA filters for everyone") you are ALSO getting the carbon filters, because they are simply additional layers? Or are they in a different physical location, buried back in the duct system somewhere out of site?

    The only reason I personally will spend $3,500 on the premium package is for the HEPA system - and now that it seems we've learned that all post-refresh Teslas have the mounting location for the HEPA filter I'd rather skip the package on my next Tesla if possible.

    As for health benefits let's try to keep this thread focused - there are other discussions about it. What convinced me was reading that researchers estimate up to 50% of the typical person's exposure to air pollution comes from simply driving an hour a day because the concentration of pollutants is so much higher when driving behind ICE cars on the highway.
  2. croman

    croman Active Member

    Nov 21, 2016
    Chicago, IL
    All I know is BWD mode activates fan at 10 and it is really freaking loud but after 10 minutes of running it when I first got my car, it noticeably eliminated the VOCs from the new leather in my car. I know, new car smell is great, but I have an 18 month old and I'm sensitive to lung irritants as well so I tried it and it was great at eliminating the issues with new leather tanning. I fired it up once or twice after and no more VOCs can be detected by my nose due to the seating and plastics.

    I try to stay away from ICE cars as much as possible and only get close to BEVs (luckily I see more than my fair share but I wish the %s were greater than 50% but I think it'll be another decade before we see those levels of BEV adoption).

    That being said, I can't imagine using BWD mode constantly. If the car uses the HEPA even for normal air circulation, then that's great. I haven't smelled ICE fumes since I got my car, so it must do something with the air (maybe just the activated charcoal is enough).
  3. Saghost

    Saghost Well-Known Member

    Oct 9, 2013
    I believe that they are separate filters in a different location, but I haven't seen them to be 100% certain.

    The gentleman who reported back prices he asked the service center for gave a separate price for the carbon filter (singular).

    This might suggest that the two versions of activated carbon which have to be chemically isolated are applied to opposite sides of one filter medium?

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