Results 1 to 9 of 9
  1. #1
    Join Date
    May 2007
    Posts
    80

    How often should HEPA'S be replaced?

    As a rule of thumb in say - a laboratory or surgery room?

  2. #2
    Join Date
    Jan 2008
    Location
    melbourne aus
    Posts
    80

    heppa

    hi,
    with heppas it all depends on the pre filters the enviroment outside, roughly around 70-100 pascal pressure drop correct me if wrong.
    the heppas can last up to 3-5 years must be air balanced after heppas changed and certified

  3. #3
    Join Date
    May 2006
    Location
    Amory Mississippi
    Posts
    1,002
    I always used the manufacturers specifications and used pressure drop across filter.
    All your air handlers in hospitals should have magnahelics (or equivilent) on both sides of pre filters and both sides of final filters. records should be maintained to show pressures are bing monitored and at what point you are changing them

  4. #4
    Join Date
    Dec 2005
    Posts
    107
    I hate rules of thumb, especially in critical environments. They are stupid and should never be used. People can die. It is not someone just complaining that its hot or cold. Learn your business or leave it to people that do.

  5. #5
    Join Date
    May 2008
    Location
    Jax Fl.
    Posts
    1,943
    Our AHCA rules here require the HEPAs to be changed at least once a year due to the possibitity of "Biologicals" growing on them.

  6. #6
    Join Date
    Dec 2005
    Posts
    107
    Quote Originally Posted by JRINJAX View Post
    Our AHCA rules here require the HEPAs to be changed at least once a year due to the possibitity of "Biologicals" growing on them.
    Where does it say that???

  7. #7
    Join Date
    Mar 2003
    Posts
    7,321
    We mostly see them in hospitals, pharmas, and cleanrooms. In almost every case they are changed due to pressure drop across the filter. most of the new installations we do have pressure taps right on the cases these days for monitoring.

  8. #8
    Join Date
    May 2008
    Location
    Jax Fl.
    Posts
    1,943
    Quote Originally Posted by nik99 View Post
    Where does it say that???
    That was straight from a ACHA site inspector. The Biocide [Microban] on the filters only lasts about a year, after that it is not a true medical "HEPA". They always want a date on the filters too.

  9. #9
    Join Date
    May 2007
    Posts
    80
    Learn your business or leave it to people that do.
    Umm, what the hell kind of comment was that? I never said I was changing MY HEPA filters based on a rule of thumb. It was a question I got asked and didn't know the answer to so I asked it here. Lighten up.

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