Question about Bionaire Cool Mist BCM4530 Humidifier

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Need help humidifier doesn't stay on

I haven't used my Bionaire Cool Mist BCM4530 much so I'm not sure what the problem is. I fill it up with water & have changed the filter but it doesn't stay on the red light blinks and I don't know what to do, can you please assist?

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Re: Need help humidifier doesn't stay on

I've had this problem before and with mine, the issue is the water is not making its way into the correct reservoir on the bottom of the machine. With experimentation, I discovered that my tilting the machine slightly upwards on the righthand side corrects the problem (i.e. put something aprox. 3-5mm thick underneath the right side of the machine). You will hear that the water "move" to the left side of the machine and thus ensuring proper operations. I think this is a design flaw (for some machines) as clearly I have the same problem too.


Posted on Jan 09, 2008

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I need a manual

Try google.

Humidifiers Instruction Manuals at
Browse our Humidifiers Instruction Manuals to find answers to common questions about Bionaire® products. Click here to view on our FAQs now.

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Nov 28, 2015 | Bionaire Humidifiers

1 Answer

How to clean bionaire bcm4530

the easiest way to clean the unit is to fill the unit with vinegar and water. it takes 1 cap full of vinegar per gallon of water. run all the water out of it. now if you don't like the smell of vinegar what you can do is take some bleach let it sit in the take for about 20 minutes. wipe out the rest of theunit with water and then rinse the tank very thoroughly before placing it back on theunit. once you have done that the unit will be cleaned. now ifyou don't want to do either one of those options. you can always call the manufacturer or check around and local hardware stores and they will have cleaning solutions taht don't have any smell or anything to them and you can put that in your unit as well. if you have any more questions please feel free to ask.

Jul 08, 2009 | Bionaire Cool Mist BCM4530 Humidifier

1 Answer

I dropped the tank. Whre can I get a new tank?

you can check any hardware store or if you live in canada you can check with canadian tire.

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Cleaning a Cool Mist BCM6100U Humidifier

usually it calls for one cap full per gallon of water that the unit has. what you do then is that you put the solution in the water then you put the tank back on the base and then you turn the unit on and let the solution run through your unit.

Mar 22, 2009 | Bionaire Cool Mist BCM6100U Humidifier

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I have bionaire cleaning product but no directions on how to use

the cleaning product that you have you need to use once cap full per gallon of water. so if it's 5 gallons you need to use 5 cap fulls. so forth and so forth. that is the easiest way to tell you. and then you let the unit run with the solutions and the water for the hole time until the water runs out. and your unit will be cleaned

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No instruction manual

1. Before filling the water tanks, push the POWER switch to the “OFF” position and
unplug unit. Refer to cleaning instructions.
2. Remove water tanks from base, turn each tank upside down and remove tank cap
by turning counterclockwise. Fill tank with clean cold tap water.
Replace the tank cap by turning clockwise. Tighten firmly.
3. Carefully pick up tank, since it will be heavy when full, and slippery if wet.
4. Place water tanks on base. Make sure tanks are properly placed, otherwise, the
humidifier will not work correctly.

Feb 11, 2009 | Slant Fin Cool Mist GF-220 Humidifier

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Replacement filter question

Filter part number is BCM100. Filters are sold at Sears. Also available online. Part number is listed on bottom of humidifier.

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Bionaire BCM645 Cool Mist Humidifier leaking water

There is probably a crack somewhere in the unit. Not likely, but worth visually inspecting closely.

Try filling it with less water and run it and see what happens.


Jan 05, 2008 | Humidifiers

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