Page 1 of 3 123 LastLast
Results 1 to 13 of 35

Thread: Filtrete

  1. #1
    Join Date
    Dec 2000
    Posts
    124
    I have returned!!!

    Now, before you guys get upset let me state that this thread is about a guy returning to the regular MERV 8 filters.

    I have two returns, one is a 16X20X1 and the other is a 20X20X1. For the 16X20 I use a NaturalAire filter (8 Merv) and for the 20X20X1 I was using a 3M Filtrete. Like you all said, the Filtrete loaded up fast so I had to replace it every month (2 months was the longest it would last). I have one more left and noticed something funny on the packaging. It now states (in bold letters with red background) on the cover.

    THE INFORMATION ON THIS STICKER SUPERSEDES THE INFORMATION ON THE PACKAGE.

    This filter does not outperform all other 1" filters. THIS FILTER IS RATED AT MERV 11 AND ITS MPR IS UNDER 1250. However, it does outperform all fiberglass, non-electrostatic pleated, and washable 1" filters.


    1)So, what is the point of MERV? Is it simply a rating of restrictiveness?

    2)Does one need anything over a MERV 8?

    3)Is there a difference among manufacturers (NaturalAire, American, etc)?

  2. #2
    Join Date
    Sep 2004
    Posts
    51
    Sounds like the filtrete was working pretty good if if loaded up quick. We'all change our filters monthly here in south Texas.Can't tell where yer frum.

  3. #3
    Join Date
    Dec 2000
    Posts
    124
    Sorry vettech, I'm in North Carolina. Still looking over the packaging, they now put a sticker that says MERV 11 over the MERV 12 on the packaging. Guess they got a lot of complaints about it being too restrictive or it was not a true MERV 12.

    I'm worried about the high pressure drop and wondering what 1" filter I should use.

  4. #4
    Join Date
    Jul 2002
    Location
    Zelienople, Pa
    Posts
    2,965
    If filter A loads up in 1 month, and filter B loads up in 4 months, which one is doing the better job?
    How tall are you Private???!!!!

  5. #5
    Join Date
    Dec 2000
    Posts
    124
    It's definately filtering better, just wondering if I need it (and if the MERV 11 is causing a greater drop in surface pressure than a MERV 8).

  6. #6
    Join Date
    Jul 2002
    Location
    Zelienople, Pa
    Posts
    2,965
    Those filtretes are garbage.

    We were having problems on a 2 ton h/p system we installed over the summer.
    The HO was using filtretes and it was cutting back the supply cfms by almost 250 cfms! Thats 1/2 ton of airflow!
    How tall are you Private???!!!!

  7. #7
    Join Date
    Dec 2000
    Posts
    124
    My system is a 2 ton. What filter did you recommend (with MERV rating)?

  8. #8
    Join Date
    Jul 2002
    Location
    Zelienople, Pa
    Posts
    2,965
    Originally posted by Triton46
    My system is a 2 ton. What filter did you recommend (with MERV rating)?
    have this: http://content.honeywell.com/yourhom...aners/f500.htm installed and put the blue fiberglass into your return grilles.
    Your system is to be used for heating and cooling, not filtering the air.
    You are killing your equipment with those 3M filters...
    How tall are you Private???!!!!

  9. #9
    Join Date
    Dec 2000
    Posts
    124
    Much thanks Bolton. I plan to add one of those soon. What type/merv of filter (aside from the blue fiberglass) would you recommend in the meantime to keep ducts and blower clean?

  10. #10
    Join Date
    Jul 2002
    Location
    Zelienople, Pa
    Posts
    2,965
    Buy a 12 pack of the cheap blue fiberglass filters and change them once a month...
    How tall are you Private???!!!!

  11. #11
    Join Date
    Sep 2004
    Posts
    51
    You must change your filters regularly or they will restrict airflow, unless you use those cheap blue ones which are hardly better thatn nothing.

  12. #12
    Join Date
    Dec 2000
    Posts
    124
    So Bolton recommends the blue (which I'm told is like having nothing) and vettech recommends getting a paper/polyester filter but change it regularly. See where I get confused?

    I think the blue ones are crap myself, but I see the benefit of increased airflow. What paper/polyester filter would you recommend that is as close to a blue in terms of airflow but with better filtering? MERV 1? MERV 2? MERV3?...

    PS Bolton, I'm in Raleigh too.

  13. #13
    Join Date
    Feb 2003
    Location
    Huntsville,AL
    Posts
    4,125
    so, measure your actual air flow with each filter type & decide -- the general concensis herein is to change to "5" thick filters for the least resistance & the best filtration -- just costs more to go first class --

    or, put in carpets & let them catch the dirt -- such as happened to me in 1970 when I put carpet in liv rm & kit -- filter loading dropped 75%!! form 1/wk to 1/mo.

Page 1 of 3 123 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event