Question about Venta Airwasher VS 207 3.7 Gallon Humidifier

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I left my Venta VS207 with water in the resevoir for a couple of months and now the 2 bottom white circles had water in them. The dark circle at the bottom of the white circle (the part that is delicate and needs to be cleaned with the special brush) is moldy and the water is kind of green (from mold?). I need to use it tonight because my baby sick. Help?

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  • mchadwickdun Nov 16, 2009

    I have a Venta VS207 and I left the blue reservoir filled with water for a few months. Some water must have leaked out into the 2 white circular areas in the base. Now, there is mold (or something else that is white) around the brown oscillator. I've tried to clean it out with the brush but it's still slightly moldy. What else can I do to clean it? Since there was water sitting for awhile, will the humidfier still work?

  • mchadwickdun Nov 16, 2009




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At Venta they say that this air humidifier cannot develop any mold, therefore they did not provide any mold cleaning procedure or product.

If the mold was only in the reservoir, then you could just clean the reservoir with anti bacterial product.

The problem is that from your description the mold looks like being nested inside the unit.

I leave in England, and I have an asthma suffering toddler, therefore I use dehumidifiers (the opposite function of your Venta) and air purifier.

This machines that are good for your health in normal condition can become very dangerous when they get mold growing inside the machine.

If you turn on the humidifier, you will distribute spores all over the house. This will be bad for yours and your baby's health, and may also damage your house.

I think the best solution is not turning on the Venta at all tonight, better not to use the dehumidifier, rather than risking to make baby health condition worse.

If you are in emergency, you can just temporarily you can boil hot water into a small saucepan and then leave the hot saucepan in a safe corner of the room.
It will release enough vapor to humidify the room for the night.
If there are no specific allergy issues you can also add few eucalyptus leaves to the water.
In a dry and cold environment you can put tin cans with water on radiators, ensure that they are safely secured.
This does not want to be medical advice. I am a technician, not a doctor, therefore being health issues involved I need to remind you to talk to your doctor before taking any steps.

About repairing, you can call Venta at the number listed on the owner manual, and you will probably have the humidifier replaced unless it turns on that you did any improper use of the machine, causing the problem.

The only other alternative is opening the machine and treating all internal parts with anti mold product, or buying a new one locally.


Do not use the humidifier. Find a temporary solution for tonight and get a different humidifier as soon as possible.

Call Venta at the number on manual (1-800-528-2817 in USA) to arrange replacement or repair of this unit.


Posted on Nov 16, 2009

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Sorry to hear that you are having problems with your humidifier.

I really don't have good news. I'm sure this is not what you want to hear. Your appliance may be damaged at this point. But you can try to clean it anyway. You can clean it as the user manual indicates. If you don't have it handy, you can download it from this link:

You can use peroxide hydrogen (the regular one 3%) to clean it and a soft sponge, not the green ones that scratches. I hope you have the brush to clean it. Using warm water also helps. Do not try to use any cleaner. You may need to clean it several times before it can be used. Also, the cartridge may need to be cleaned.

I can't guarantee that it is going to work but I hope you good luck.

Posted on Nov 16, 2009


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