Results 1 to 7 of 7
  1. #1
    mathew stouffer's Avatar
    mathew stouffer Guest

    Default Hot water line to humidifier

    Can a hot water supply line be connected to a humidifier, never seen this one before.

    Similar Threads:
    ***IMPORTANT*** You Need To Register To View Images ***IMPORTANT*** You Need To Register To View Images
    F.I.R.E. Services

  2. #2
    Join Date
    Mar 2007
    Location
    Chicago, IL
    Posts
    2,797

    Default Re: Hot water line to humidifier

    Another case of "Check the manufacturer's installation instructions".

    Honeywell and and Generalaire allow it, and Aprilaire actually recommends it for some installations, see (8) here:

    Frequently Asked Questions

    and AFAIK no manufacture prohibits it, and I've not found any that specifically recommend against it.

    ***IMPORTANT*** You Need To Register To View Images ***IMPORTANT*** You Need To Register To View Images
    Last edited by Michael Thomas; 04-20-2010 at 08:54 AM.
    Michael Thomas
    Paragon Property Services Inc., Chicago IL
    http://paragoninspects.com

  3. #3
    Join Date
    Feb 2008
    Location
    Chicago IL
    Posts
    1,984

    Default Re: Hot water line to humidifier

    Matt, you really need to work on your technical knowledge. When you supply the HUM with hot water it becomes a whole house sauna unit. Very nice to have after a long day of swooshing the slopes.
    Seriously though, I don't know of a specific requirement against it. The Manuf. Spec's probably don't even say anything because who would think someone would be dumb enough to do it.
    From a user standpoint it is a bad idea of course. HUM's are notorious for clogging up. Imagine what the inside of the HUM will look like with hot water. I also doubt that the insides are designed for hot water which could cause major malfunction. Then of course there's the utility cost.

    www.aic-chicago.com
    773/844-4AIC
    "The Code is not a ceiling to reach but a floor to work up from"

  4. #4
    Join Date
    Mar 2007
    Location
    Chicago, IL
    Posts
    2,797

    Default Re: Hot water line to humidifier

    Quote Originally Posted by Markus Keller View Post
    Then of course there's the utility cost.

    Which can add up, one estimate I've seen is that a average flow-through humidifier discharges between 5,000 and 8,000 gallons (668 and 1069 cubic feet) of water annually, assuming a 17 week heating system with a call for heat 50% of the time, in the city where I live (Evanston, IL, which charges $5.46/100/cu/ft) that translates to $36 and $58 a year.

    Michael Thomas
    Paragon Property Services Inc., Chicago IL
    http://paragoninspects.com

  5. #5
    David Bell's Avatar
    David Bell Guest

    Default Re: Hot water line to humidifier

    Aprilaire makes a humidifier that wicks the water up thru a softer pad from a very small reservoir and uses substantially less water than waterfall or drum type units.


  6. #6
    Join Date
    Mar 2007
    Location
    Connecticut
    Posts
    1,828

    Default Re: Hot water line to humidifier

    as a rule, any humidifier is a potential mold factory and should be labeled as such. Adding moisture to ductwork is just a bad idea. Now I know many folks don't think the same and that's their perogative. In my reports, i point out the possibilities.
    And Hot Water? well that adds to the 3stooges factor for sure.


  7. #7
    David Bell's Avatar
    David Bell Guest

    Default Re: Hot water line to humidifier

    Aprilaire instructions



    Your humidifier is designed to operate using hot, cold, hard or mechanically
    softened water. (Hot water is required for Models 350 and 360.)
    Water contains varying amounts of minerals. The residue remaining as a
    result of hard water evaporation is primarily calcium and magnesium
    components and is usually quite hard, scaly, and dense.
    Residue from softened water tends to be soft and fluffy and has a greater
    volume than hard water deposits. In either case, the service life of aWater
    Panel evaporator will be the same. The Water Panel evaporator should be
    changed at least once a year with the exception of Models 400A and
    400M which should be changed at least twice a heating season. In the
    drain-equipped models, most of the mineral solids are controlled by
    flushing them down the drain.
    Hot supply water, 140F maximum, is recommended with drain type
    humidifiers for increasing capacity and is required for heat pump and air
    handler applications.



Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •