Removing massive mineral scale from crock pot used as humidifier?

ReseyAugust 1, 2014

Hi. We've used our crockpot as a makeshift humidifier but the inside of it quickly developed a hard, white mineral scale that no amount of cleaning attempt seems able to remove - and vinegar doesn't dent it.

Any suggestions?

We use r/o-filtered water from the drinking water part of our kitchen faucet apparatus and the whole house also has r/o and a salt-based softener out in the garage.

Decided to try the crock pot approach, which works great for us, after difficulty keeping a regular room humidifier operational (as you might imagine). We don't have easy access to distilled water without going out and buying jugs daily, so would like to keep using the crock pot with our filtered drinking water.

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Vinegar cleans vases you might try that. Let it soak for awhile.

    Bookmark   August 1, 2014 at 7:19PM
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Have you tried the commercial products like Lime Away? They are not designed for use with cooking appliances, so you would have to make sure you rinse the pot really well afterwards.

With vinegar, as Emma has said, the trick is to soak the item for hours. You can't just spray it on and wipe off.

    Bookmark   August 3, 2014 at 9:57AM
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I would try CLR. That seems to work with about anything and is safer to use than LimeAway. You may have to let it soak for an extended period of time and definitely be sure to rinse it really well. I have also used a combination of lemon juice and vinegar. You might try heating it, mixed with water, in the microwave first, and then pouring it in and covering the crockpot, over a low heat. Good luck. I hope one of these solutions works for you.

    Bookmark   August 14, 2014 at 11:25AM
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next time use distilled water, and clean thoroughly between uses

    Bookmark   August 20, 2014 at 5:25PM
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Fill crock pot full of white vinegar and let soak for a few days. Do not add water.

Be sure and clean crock pot daily when using as a humidifier. Wet inside of crock pot with vinegar, let set couple hours to remove a days worth of lime. Re-wet off and on during that time.

Sometimes cleaning crock pot with baking soda will remove small amounts of lime residue before it becomes scale. Other kitchen powder cleansers will do the same. Use vinegar for scale.

    Bookmark   August 21, 2014 at 12:51PM
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Lemishine - it's safe (just citric acid like from lemons) sold for use in dishwashers. It works great for coffee pots etc.

    Bookmark   September 2, 2014 at 12:28AM
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each time my electric kettle, humidifier, etc gets caked up with lime scale I clean it with vinegar. It is MAGIC. For the kettle, and humidifier, I use half vinegar and half water, fill to desired level and turn the appliance on. ( this makes vinegar fumes but I don't mind). After the mixture gets good and hot, I turn it off and let it sit to do its work. For my kettle and humidifier, which heat up fast, this is a 5 minute process. After which I actually save the vinegar/water mixture to use again cause I am a cheap skate and I get several uses out of it- but I don't dilute it again. I do this on a weekly basis in the winter and my appliances are like new. I hope it works for you, too.

    Bookmark   September 3, 2014 at 8:26PM
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