How to Remove Limescale from a Humidifier/Vaporizer Heating Unit

14 responses

  1. Chuck
    January 23, 2012

    Unfortunately, I have tried everything suggested here. I have left the heating element submerged in vinegar overnight. I have even tried to heat the element for a few minutes so it was hot vinegar, but to no avail. The layer of lime scale gets thicker and thicker. I have even tried that product called Lime-A-Way, but with the same results: no effect. Does anyone have another idea?

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  2. Ann
    February 20, 2013

    The answer to your question certainly was lacking, wasn’t it? I don’t understand why the answer to your question stating that vinegar doesn’t work would be to use vinegar! I am sorry; I can’t help with the answer-I had to buy a new humidifier because I couldn’t remove the scaling from the “old” one that I used for three weeks.

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  3. M.
    March 4, 2013

    Try muriatic acid. Just make sure to neutralize it when done.

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  4. E
    January 19, 2014

    I used a butter knife in combination with vinegar and baking soda; clean as it’s going to get. Just about all gone. I would say 95+%.

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  5. Claire
    February 6, 2014

    Q1 : Can I put some of pure (99.99% and mint coin) 1 ounce silver coin in the base unit to kill the bacteria?

    Q2 : Does the warm setting promote bacteria increase? If yes, is cool mist is better than warm mist or are they the same?

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  6. Kat
    April 24, 2014

    I agree, Ann. I think it’s bananas that the author wrote an entire post on how to clean a humidifier using vinegar when the person asking the question clearly stated that they already used vinegar and it didn’t work. Oy Vey! Just gotta laugh.

    Reply

  7. Joe
    January 17, 2015

    Vinegar does work!! Put it in and turn it on; let it boil in there – it may take more than a few minutes or, depending on how bad, hours!! Just add more as it evaporates away. I do it all the time and it’s clean as a whistle!!

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  8. Thomas
    January 27, 2015

    JOE– Your are 100% correct. Vinegar does work when you PUT IT IN AND PLUG IT IN, LETTING THE VINEGAR BOIL. I HAVE BEEN DOING THIS FOR MANY, MANY YEARS. At 76, there are no plans to change.

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  9. Mandy
    February 1, 2015

    For those of you that put vinegar in the water basin itself, does it make your house smell like vinegar then? I want to try this, but am just curious about the resulting smells, if any? Thanks!

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  10. Marilyn
    February 17, 2015

    Why didn’t I know about this before. I’m letting the vinegar boil, and it’s working beautifully. Smells like vinegar in here, but I don’t mind.

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  11. Frank
    May 31, 2015

    “Should I pour vinegar into the water container so it boils/humidifies with a vinegar solution?”

    Be careful with putting vinegar in humidifiers with removable tanks. They usually have rubber valves that the vinegar will ruin if it’s in the water.

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  12. Carol
    December 11, 2015

    I had asked about the filter turning black after using it overnight. Someone said it could be minerals in the water but it didn’t do this last year nor last month. The filter is filled with large black spots until it is pretty much covered. Could this be something dangerous. Maybe I should not be using this unit. Scary.

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  13. Leah
    January 19, 2016

    I have an older humidifier and I do not understand how to wipe from there the stuff. This method does not help.

    Reply

  14. Nadi
    January 23, 2016

    Boiling vinegar in the heating element helped! It’s like a miracle…

    Reply

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