Results 1 to 8 of 8
  1. #1
    Join Date
    Aug 2007
    Posts
    273

    Air filter choice for - infinity gas furnace

    Hi
    I am installing an infinity 96 series gas furnace. What type of air filter would you recommend---- a standard 1 inch 3m filtrate set up, or a 4 inch filter--see no reason to go with an electric filter -no alergies etc. What do you think? Thanks Ron

  2. #2
    Join Date
    Jun 2005
    Posts
    14
    I would go with the 4" media.... it comes with the unit.

  3. #3
    Join Date
    Sep 2007
    Location
    South
    Posts
    89
    Quote Originally Posted by novakht View Post
    I would go with the 4" media.... it comes with the unit.
    Agree, media filters are much better than 1" filters, they are more expensive but normally you replace them once or maximum twice a year, make sure it's a MERV 11 filter.
    What's another word for Thesaurus?
    - Steven Wright

  4. #4
    Join Date
    Aug 2002
    Location
    Office and warehouse in both Crystal River & New Port Richey ,FL
    Posts
    18,836
    Ron3637,

    3M filters are too restrictive after a couple of weeks in service,basd on iur experience.

    The 4" pleated with a minimum of Merv 8 rating ,sized properly would be a much better choice,IMHO.

    If you are replacing and old system,the duct system is often marginally sized and modifications are needed to add any "better" filter.If the new filter is too restrictive ,based on the duct system,without modifications air flow may fall below the required minimum and can damage the equipment.

    If you get the Infinty Control,you'll actually be able to read the static(resistance of the duct system and A/C coil).

  5. #5
    Join Date
    Aug 2007
    Posts
    273

    merv 11 vs 8

    Would an 11 merv filter be OK --not too restrictive, I live in an old 1930s house in wasjinigton dc Thanks all for your responses. ron

  6. #6
    There are 5" filters that suit return air grilles - Practical Pleat.
    www.filterfolks.com for specifications and more.

  7. #7
    Join Date
    Aug 2002
    Location
    Office and warehouse in both Crystal River & New Port Richey ,FL
    Posts
    18,836
    Quote Originally Posted by FilterFolks View Post
    There are 5" filters that suit return air grilles - Practical Pleat.
    www.filterfolks.com for specifications and more.
    Wondering how long they'll let advertise here.

  8. #8
    Join Date
    Dec 2002
    Location
    Texas
    Posts
    237

    Question

    Quote Originally Posted by dash View Post
    Ron3637,

    3M filters are too restrictive after a couple of weeks in service,basd on iur experience.

    The 4" pleated with a minimum of Merv 8 rating ,sized properly would be a much better choice,IMHO.

    If you are replacing and old system,the duct system is often marginally sized and modifications are needed to add any "better" filter.If the new filter is too restrictive ,based on the duct system,without modifications air flow may fall below the required minimum and can damage the equipment.

    If you get the Infinty Control,you'll actually be able to read the static(resistance of the duct system and A/C coil).
    I like the point about the 3M filters, I have suspected that but never said anything about it. Looks like a way to get sales in the door to check the plenum and duct design; and speak with the customer about how to meet thier indoor air quality needs. In the mean time use a sturdy Merv 8 pleated.

    Could you speak to the Infinity Control?
    John

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