Question about Aprilaire 550 Humidifier

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Aprilaire 550 has exploded with water

Have been having problems with my furnace itself for a while running cold air. While that was happening, the carbon monoxide detector was beeping every 15 sec. Its been going on for about 2 months, every couple of weeks. The other night woke up to the carbon monoxide detector beeping and furnace was running cold air. My humidifier is set at 25%.  Later that day came home to my furnace area under water. It looked like it came out of humidifier. There was at least a gallon of water on the floor. Shut the whole system off and been living in cold since. Does the water just sit in the unit if not heated up by hot air? Can I drain the unit myself?

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  • anastasia802 Feb 11, 2009

    What might be the reason for that much water to gather in the unit and spray out 2 ft in the air?

  • anastasia802 Feb 11, 2009

    Is it safe to open the humidifier if its on top of the furnace? If that much water sprayed out of it, and I remove the cover, would it possibly flood the furnace below it?

  • anastasia802 Feb 11, 2009

    Thank you:)

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No water should not just sit there in the system. It is supposed to recirculate itself. You should really call a tech out and have them check your system.

Posted on Feb 11, 2009

  • 1 more comment 
  • Jeremy Reddick
    Jeremy Reddick Feb 11, 2009

    Sounds like the coil broke inside the humidifier. You can look in there and see what is going on. Just make sure you unplug the unit. Also just check the water supply going into your humidifier. Just to make sure that did not happen

  • Jeremy Reddick
    Jeremy Reddick Feb 11, 2009

    Yes that is true. That is why I say that you should get a tech out there, if anything happens to the furnace it is on them to repair and replace not you

  • Jeremy Reddick
    Jeremy Reddick Feb 11, 2009

    Welcome have a good day

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1 Answer

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Also check any opening to the tank that would allow dust and lint to enter the tank and seal them, if necessary with duct tape. If the furnace is in a dusty area, do the best that you can to eliminate the dust.

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Easy fix if you need to do it yourself.
More than likely they have a 1/4 inch line taped into a 1/2 inch copper line near your furnace.
Simply shut off the tap on the undesired line and disconnect the 1/4 inch line.
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