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Thread: Trane / American Standard Hyperion / Forefront Plastic Air Handler Smell

  1. #1
    Join Date
    Dec 2015
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    Trane / American Standard Hyperion / Forefront Plastic Air Handler Smell

    We recently purchased a home which had a american standard forefront (aka trane hyperion) unit. Within 2-3 weeks of moving in, we noticed that a strange smell coming from the return area of the air handler. Numerous calls to AC vendors, duct specialists and home mildew remediation folks later, the smell remains. The coils are clean (and I also had sprayed it again with the coil cleaner) and the condensate drip pan is cleaned.

    As far as we can tell, the smell is coming from the actual plastic air handler cabinet. There is no smell from the coils nor the area above the cabinet or attic or vents or ducts.

    I've googled for this problem as well as searched hvac-talk (there is one other post about this issue with no resolution) so I am at wits end. I've called american standard and because we are currently not under warranty, they aren't very forthcoming with any solutions beside dirty sock syndrome and to clean/replace the coil.

    I am hoping some veteran HVAC folks can confirm/deny this issue with the smell from these plastic air handlers and how I would go about trying to find some resolution.

    thanks,
    mahesh

  2. #2
    Join Date
    Sep 2014
    Location
    NW Arkansas
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    How old is the unit? Every system has some kind of smell but that goes away after a short time. Can you describe the smell better? Did it get worse, better, change after any cleanings? Do you have anything else hooked up to the system like a fresh air intake, dehumidifier, humidifier....

  3. #3
    Join Date
    Dec 2015
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    Thread Starter
    The unit was installed in March 2011 so it's a little older than 4.5 years. The smell is most prevalent when the AC unit has stopped after it has done a cool cycle. We don't have any dehumidifier or humidifier or other accessory. No changes after a full cleaning including wiping down the entire interior of the air handler and coil cleaning.

    The smell is really hard to describe. Perhaps "acrid" would be close. The smell comes from the actual inside plastic of the air handler.

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