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Bionaire BCM645 Cool Mist Humidifier leaking water

I fill the 4 gallon tank with water and place it in the unit. No problem for about 20 minutes and then you can see water leaking out of the sides of the bottom. It seems to be overfilled. How can I stop this from leaking.


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Re: Bionaire BCM645 Cool Mist Humidifier leaking water - Humidifiers

Same here

Posted on Feb 16, 2008

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Re: 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.


Posted on Jan 05, 2008

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How to clean sunbeam humidifier swm5250


The following maintenance procedures must be routinely followed in order to ensure proper, efficient operation of your humidifier. The unit WILL NOT WORK CORRECTLY if it is not cleaned properly.

When the unit is in use, daily and weekly maintenance is recommended. Regular weekly cleaning prevents scale buildup on the heating element and base. It also prevents micro-organisms from growing on the base. This ensures that maximum efficiency will be achieved.

We cannot over-emphasize how essential proper cleaning is to the maintenance and continued use of your unit and to the the avoidance of algae or bacteria build-up.

Allow to cool before maintenance.
1. Before cleaning, set the control to OFF (O) position and unplug the unit from the electrical outlet.
2. Remove the water tank then unlock the misting chamber by rotating the safety lock towards the front of the unit. Lift mist chamber from the unit's base.
3. Empty water and minerals from the base and place in the top rack of the dishwasher. This will remove any sediment and dirt that has accumulated in the base.
NOTE: It is imperative that the base is cleaned properly. The base is dishwasher safe (top rack ONLY) for easy cleaning.
4. Wipe the heating element clean with a soft cloth after it has had a chance to cool.
5. Replace misting chamber and engage safety lock. The Electronic Thermal Control Heating element is lined with a coating that is designed to provide the easiest cleaning and prolong the operating efficiency of the humidifier. DO NOT use any metal or hard objects to clean the Heating Element. Never use detergents, gasoline, kerosene, glass cleaner, furniture polish, paint thinner or other household solvents to clean any part of the humidifier.

Remove Scale: Allow to cool before maintenance.
1. Repeat steps 1-5 in the Daily Maintenance section.
2. Clean the tray by partially filling the base with one 8 oz. cup of undiluted white vinegar. Let solution stand 20 minutes, cleaning all interior surfaces with a soft brush. Dampen a cloth with undiluted white vinegar and wipe out entire base to remove scale.
3. Rinse with clean warm water to remove scale and the white vinegar solution before beginning to disinfect the tank.
4. Wipe the heating element clean with a soft cloth after it has had a chance to cool.

Disinfect Tank:
1. Fill tank with 1/2 teaspoon of chlorine bleach and 1/2 gallon of water.
2. Let the solution stand for 20 minutes, swishing every few minutes. Wet all surfaces.
3. Empty the tank after 20 minutes, and rinse well with water until the bleach smell is gone. Dry with a clean cloth of paper towel.
4. Refill the water tank with cool water; replace the housing and water tank. Repeal ALL Operating Instructions.

Jan 22, 2012 | Sunbeam Humidifiers

1 Answer

I turn the humidifier on l or ll. The light is grean but it is not releasing steam or anything. I don't hear a noise and the water level stays the same.

The humidifier may be clogged with a calcium scale build up. Especially, if you use well water or your municipal water supply has a high chemical content.

To solve this problem do the following. Mix a 50/50 solution of White Vinegar and Bottled Distilled Water (enough to fill the tank). Empty any water that is currently in the tank and fill it with the 50/50 solution. Allow at least one hour, before turning the unit ON. After turning it ON place you hand in front of the mist nozzle to see if any mist is being generated. If it's generating mist, allow it to run until the tank is 3/4's empty. Then turn the unit OFF, unplug it and empty the remaining solution. Refill with Bottled Distilled Water and run until the tank is empty.

If the unit did not produce mist after one hour of soaking, allow it to set over night and then follow the procedure above. Generally, an overnight soaking will do the trick. In the future, I recommend using Bottle Distilled Water rather than your tap water.

Hope this helps you solve the problem. Please let me know. Thanks.

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How do I clean / sanitize my sunbeam humidifier swm5250 with bleach?

I'm no expert, but a friend of mine loaned me her humidifier recently and she just put some bleach and water in the tank and cleaned the tank with that. It did leave a smell of bleach in the tank that could be smelled any time it ran, but after a few refillings, it went away, and I figure if it smells there must be a little left, which means it should clean the working parts fairly well too. (while you're running it the first few times) And the medicine tray in the SWM5250 is dishwasher safe, so I would just run that through the dishwasher, but bleach should be fine for that too.

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My humidifier is leaking. I is a Vicks V3900 Germ Free Cool Mist Humidifier. How do I solve this problem

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I need to know how to clean the base of my humidifier.

ask at
They will find it for you.

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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.

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

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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.

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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
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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.
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