Providing cleaner moisture for your family is at the heart of the Cool Moisture Humidifier. This humidifier has a 1.0 gallon tank with an ultraviolet chamber that helps treat the water for a cleaner mist, giving you peace of mind when adding moisture to dry indoor air. The wicking filter captures and removes minerals and impurities from the water. Increasing the humidity level in your home can help you create a better sleep environment. To enhance your comfort, simply add Vicks VapoPads (one sample included) and breathe in the soothing scent. The Vicks Cool Mist Humidifier helps the user breathe better and sleep more comfortably for everyday comfort. Using a humidifier in your bedroom is an essential part of a good night's sleep when the air is dry, in allergy season, or when sick. This unit is recommended for medium rooms of up to 400 sq. feet. Use with replacement filter WF2.
Providing cleaner moisture for your family is at the heart of the Cool Moisture Humidifier. This humidifier has a 1.0 gallon tank with an ultraviolet chamber that helps treat the water for a cleaner mist, giving you peace of mind when adding moisture to dry indoor air. The wicking filter captures and removes minerals and impurities from the water. Increasing the humidity level in your home can help you create a better sleep environment. To enhance your comfort, simply add Vicks VapoPads (one sample included) and breathe in the soothing scent. The Vicks Cool Mist Humidifier helps the user breathe better and sleep more comfortably for everyday comfort. Using a humidifier in your bedroom is an essential part of a good night's sleep when the air is dry, in allergy season, or when sick. This unit is recommended for medium rooms of up to 400 sq. feet. Use with replacement filter WF2.
in 2 offers
The lowest price for Vicks V3900 Germ Free Cool Moisture Humidifier right now is $78.15 at eBay.com.au, compared across 2 retailers.
The all-time low was $40.29 on 15 June 2025 — today's price is 94% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 30 Oct 2026.
Vicks V3900 Germ Free Cool Moisture Humidifier
Providing cleaner moisture for your family is at the heart of the Cool Moisture Humidifier. This humidifier has a 1.0 gallon tank with an ultraviolet chamber that helps treat the water for a cleaner mist, giving you peace of mind when adding moisture to dry indoor air. The wicking filter captures and removes minerals and impurities from the water. Increasing the humidity level in your home can help you create a better sleep environment. To enhance your comfort, simply add Vicks VapoPads (one sample included) and breathe in the soothing scent. The Vicks Cool Mist Humidifier helps the user breathe better and sleep more comfortably for everyday comfort. Using a humidifier in your bedroom is an essential part of a good night's sleep when the air is dry, in allergy season, or when sick. This unit is recommended for medium rooms of up to 400 sq. feet. Use with replacement filter WF2.
Providing cleaner moisture for your family is at the heart of the Cool Moisture Humidifier. This humidifier has a 1.0 gallon tank with an ultraviolet chamber that helps treat the water for a cleaner mist, giving you peace of mind when adding moisture to dry indoor air. The wicking filter captures and removes minerals and impurities from the water. Increasing the humidity level in your home can help you create a better sleep environment. To enhance your comfort, simply add Vicks VapoPads (one sample included) and breathe in the soothing scent. The Vicks Cool Mist Humidifier helps the user breathe better and sleep more comfortably for everyday comfort. Using a humidifier in your bedroom is an essential part of a good night's sleep when the air is dry, in allergy season, or when sick. This unit is recommended for medium rooms of up to 400 sq. feet. Use with replacement filter WF2.
Last updated at 30/10/2026 15:42:57
Vicks V3900 Germ Free Cool Mist Humidifier
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Vicks V3900 Cool Mist Humidifier
Delivery $56.85
originally posted on walmart.com
As with another reviewer, I give it 4 stars due to the light on the front. This light is designed to function as both an indicator that the UV lamp is working correctly as well as a nightlight for a child’s room. It is just a really bright light that I would it rather have been a soft indicator.This humidifier works differently than most. Instead of using a fine mist to actively spray water into the air, it pulls air across a soaked filter enabling moisture to evaporate into the air, also known as evaporative cooling. The water passes over a UV light to kill microbes and the filter is also antimicrobial.If your room is more humid than the natural evaporative point, this will not increase the humidity and may allow a minute amount of excess humidity to absorb ... MoreAs with another reviewer, I give it 4 stars due to the light on the front. This light is designed to function as both an indicator that the UV lamp is working correctly as well as a nightlight for a child’s room. It is just a really bright light that I would it rather have been a soft indicator.This humidifier works differently than most. Instead of using a fine mist to actively spray water into the air, it pulls air across a soaked filter enabling moisture to evaporate into the air, also known as evaporative cooling. The water passes over a UV light to kill microbes and the filter is also antimicrobial.If your room is more humid than the natural evaporative point, this will not increase the humidity and may allow a minute amount of excess humidity to absorb into the filter in an attempt to bring the humidity into what is considered the ideal zone, 40-60%. If your room is exceptionally arid, you may want an active mister instead as it will keep pace better, but active misters will require a filter when using tap water to avoid coating everything in scale dust and damaging the mister, whether they say filter free or not.This humidifier requires a filter to opperate, and it does need replaced as often as you replace your furnace filter. The filter can change colors depending on what is in the water that is used in it, but, as it is only the water that evaporates into the air, all of this can be ignored as it is simply the filter doing its job. At my previous apartment, my filter would turn brown within a week, while at my current apartment, it has yet to brown. The vapor pads are a bit expensive for regular use, but when cold season comes around it makes the nights much more doable. For us, we fill the tank about 2-3 times a week in the winter as the heater dries the air and a bit less in the summer depending on the weather.My take on this humidifier is it is a good, clean, low maintenance humidifier. The filter is only switched every few months and is resting underneath the tank, the tank every few days and rests on top, and it self regulates with the evaporative cooling making it safe, simple and robust.A good humidifier, a smart thermostat, and a good hvac filter are the things you need to clean the air in your home while keeping it more than comfortable.
originally posted on helenoftroy.com
This Vicks Humidifier is great and consistently helps to provide relief in my dry home during the winter. Winter dry air is the absolute worst, but since I started using this humidifier, I have noticed I don't "feel" dry.The actual design of the humidifier is also really nice; it is also reasonably portable (though it is a little on the bulky side) and actually quite attractive looking. I love how the design just looks clean and relaxing and fits nicely in my room without looking out of place or tacky.Overall, this is a really great and effective humidifier that I love having in my home. I highly recommend it for anyone looking for a good humidifier that also looks nice!
originally posted on helenoftroy.com
I must say one thing Vicks brand products do not do is moss. This Vicks Germ Free Cool Mist Humidifier has been so useful in our home. We are all allergy sufferers and also have one with asthma living in the household and using this this humidifier made by Vicks has helped us breathe better and sleep more comfortably for everyday comfort. Its patented germ killing technology kills up to 99.9% of virus, fungus, bacteria and most importantly for us, mold, in the unit’s water after setting it on high and using it consistently for 2 hours. By doing this it provides the needed assurance that the moisture the humidifier is letting off into the air is virtually free of germs. To provide maximum comfort the self regulating evaporative system adjust output for maximum ... MoreI must say one thing Vicks brand products do not do is moss. This Vicks Germ Free Cool Mist Humidifier has been so useful in our home. We are all allergy sufferers and also have one with asthma living in the household and using this this humidifier made by Vicks has helped us breathe better and sleep more comfortably for everyday comfort. Its patented germ killing technology kills up to 99.9% of virus, fungus, bacteria and most importantly for us, mold, in the unit’s water after setting it on high and using it consistently for 2 hours. By doing this it provides the needed assurance that the moisture the humidifier is letting off into the air is virtually free of germs. To provide maximum comfort the self regulating evaporative system adjust output for maximum comfort. Doing so provides this machine with quiet comfort so need to be concerned about getting a good nights rest as well while this is working in your bedroom at night
| Whole House | No (for medium sized rooms) |
| Humidification Type | Cool Mist |
| Coverage Area | Medium, 400-600 square feet, Large Room Size |
| Water Tank Capacity | 1.0 gallon |
| Volume | 1 gal |
Vicks V3900 Germ Free Cool Mist Humidifier
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Vicks V3900 Cool Mist Humidifier
Delivery $56.85
As with another reviewer, I give it 4 stars due to the light on the front. This light is designed to function as both an indicator that the UV lamp is working correctly as well as a nightlight for a child’s room. It is just a really bright light that I would it rather have been a soft indicator.This humidifier works differently than most. Instead of using a fine mist to actively spray water into the air, it pulls air across a soaked filter enabling moisture to evaporate into the air, also known as evaporative cooling. The water passes over a UV light to kill microbes and the filter is also antimicrobial.If your room is more humid than the natural evaporative point, this will not increase the humidity and may allow a minute amount of excess humidity to absorb ... MoreAs with another reviewer, I give it 4 stars due to the light on the front. This light is designed to function as both an indicator that the UV lamp is working correctly as well as a nightlight for a child’s room. It is just a really bright light that I would it rather have been a soft indicator.This humidifier works differently than most. Instead of using a fine mist to actively spray water into the air, it pulls air across a soaked filter enabling moisture to evaporate into the air, also known as evaporative cooling. The water passes over a UV light to kill microbes and the filter is also antimicrobial.If your room is more humid than the natural evaporative point, this will not increase the humidity and may allow a minute amount of excess humidity to absorb into the filter in an attempt to bring the humidity into what is considered the ideal zone, 40-60%. If your room is exceptionally arid, you may want an active mister instead as it will keep pace better, but active misters will require a filter when using tap water to avoid coating everything in scale dust and damaging the mister, whether they say filter free or not.This humidifier requires a filter to opperate, and it does need replaced as often as you replace your furnace filter. The filter can change colors depending on what is in the water that is used in it, but, as it is only the water that evaporates into the air, all of this can be ignored as it is simply the filter doing its job. At my previous apartment, my filter would turn brown within a week, while at my current apartment, it has yet to brown. The vapor pads are a bit expensive for regular use, but when cold season comes around it makes the nights much more doable. For us, we fill the tank about 2-3 times a week in the winter as the heater dries the air and a bit less in the summer depending on the weather.My take on this humidifier is it is a good, clean, low maintenance humidifier. The filter is only switched every few months and is resting underneath the tank, the tank every few days and rests on top, and it self regulates with the evaporative cooling making it safe, simple and robust.A good humidifier, a smart thermostat, and a good hvac filter are the things you need to clean the air in your home while keeping it more than comfortable.
This Vicks Humidifier is great and consistently helps to provide relief in my dry home during the winter. Winter dry air is the absolute worst, but since I started using this humidifier, I have noticed I don't "feel" dry.The actual design of the humidifier is also really nice; it is also reasonably portable (though it is a little on the bulky side) and actually quite attractive looking. I love how the design just looks clean and relaxing and fits nicely in my room without looking out of place or tacky.Overall, this is a really great and effective humidifier that I love having in my home. I highly recommend it for anyone looking for a good humidifier that also looks nice!
I must say one thing Vicks brand products do not do is moss. This Vicks Germ Free Cool Mist Humidifier has been so useful in our home. We are all allergy sufferers and also have one with asthma living in the household and using this this humidifier made by Vicks has helped us breathe better and sleep more comfortably for everyday comfort. Its patented germ killing technology kills up to 99.9% of virus, fungus, bacteria and most importantly for us, mold, in the unit’s water after setting it on high and using it consistently for 2 hours. By doing this it provides the needed assurance that the moisture the humidifier is letting off into the air is virtually free of germs. To provide maximum comfort the self regulating evaporative system adjust output for maximum ... MoreI must say one thing Vicks brand products do not do is moss. This Vicks Germ Free Cool Mist Humidifier has been so useful in our home. We are all allergy sufferers and also have one with asthma living in the household and using this this humidifier made by Vicks has helped us breathe better and sleep more comfortably for everyday comfort. Its patented germ killing technology kills up to 99.9% of virus, fungus, bacteria and most importantly for us, mold, in the unit’s water after setting it on high and using it consistently for 2 hours. By doing this it provides the needed assurance that the moisture the humidifier is letting off into the air is virtually free of germs. To provide maximum comfort the self regulating evaporative system adjust output for maximum comfort. Doing so provides this machine with quiet comfort so need to be concerned about getting a good nights rest as well while this is working in your bedroom at night
I think the best way to filter out this humidifier from the others - is this humidifier is a good all around humidifier for “when you are sick”. And should be branded as such. You have the vapor pads that get the junk / germs out of the air. The nasty stuff. This should be your go-to for short term sickness and I will continue to use it like that. You can depend on Vicks for helping you with products when illness occurs. Technology such as the use of uv definitely cuts down on germ prevention (which this unit has). Love it for that benefit alone.
Very pleased with this Humidifier and love that it has the evaporative technology (so it is an invisible mist). It is quiet enough for sleep (low fan sound, not noticeable). It is easy enough to clean, most Humidifiers aren't super easy to clean but this is easy enough considering, it helps if you maintain keeping it clean. While it's not the best looking Humidifier, I do like the design as it is easy to refill with water. Thr run time is great, depending on the setting it does run for the as stated 24 hours. If you do choose to use the vapopads, it is very strong. Not a big deal as I don't use the pads often.
What an outstanding product. In winter, we need additional moisture to our homes. Our walls and furniture will appreciate us keeping the air air moister.One bid help is that it helps us breathe better especially while sleeping at night. We need a bit more moisture to keep our nasal passages moist.Very pleased to see that the product does not leave moist spots on floors or walls. If it does, there are three levels for the fan so you can raise or lower the volume of moisture in the air until you get it as you like it.It's a small unit that can be tucked away out of sight. All in all, a great product.
My family suffers from sinus issues and asthma. I knew that we needed something to help us feel better. The cool moisture humidifier by Vick’s has been the perfect solution. The ultraviolet light technology is such a smart idea to help keep your breathing air clean , killing up to 99.9% of mold, bacteria, viruses, and bacteria that may be lurking indoors. We also have 2 dogs that contribute to the air quality with their dander but having used this humidifier has helped tremendously. It has a wide tank opening for easy cleaning and filling. A carrying handle on the top. We got the one for a medium size room which covers up to 400 square foot. It has up to 24 hours of run time. It’s very quiet so it doesn’t become a nuisance at night when sleeping especially for ... MoreMy family suffers from sinus issues and asthma. I knew that we needed something to help us feel better. The cool moisture humidifier by Vick’s has been the perfect solution. The ultraviolet light technology is such a smart idea to help keep your breathing air clean , killing up to 99.9% of mold, bacteria, viruses, and bacteria that may be lurking indoors. We also have 2 dogs that contribute to the air quality with their dander but having used this humidifier has helped tremendously. It has a wide tank opening for easy cleaning and filling. A carrying handle on the top. We got the one for a medium size room which covers up to 400 square foot. It has up to 24 hours of run time. It’s very quiet so it doesn’t become a nuisance at night when sleeping especially for someone like me who is a light sleeper. There are VapoPads that you can also use that’s infused with Vick’s so you can get the full experience of breathing easier. Very easy to clean and fill up. I so recommend this humidifier!
This humidifier arrived at the perfect time. Our house gets so dry in the winter months. This humidifier has really helped, especially at night. We'll have this humidifier going and instead of waking up with a dry throat, we just feel better in the mornings. My family suffers from allergies and asthma, so having moist air circulating through our bedrooms has really helped. We have an older humidifier that was really loud and would blast water all over the carpet. This one is very quiet and it's a nice mist. A definite upgrade from our last one. I also like that you can add the Vick's vaper pads to help with coughs and colds. I'm sure we'll be needing to do that soon being in cold season! I also like that this one is easy to empty, fill, and clean compared to other ... MoreThis humidifier arrived at the perfect time. Our house gets so dry in the winter months. This humidifier has really helped, especially at night. We'll have this humidifier going and instead of waking up with a dry throat, we just feel better in the mornings. My family suffers from allergies and asthma, so having moist air circulating through our bedrooms has really helped. We have an older humidifier that was really loud and would blast water all over the carpet. This one is very quiet and it's a nice mist. A definite upgrade from our last one. I also like that you can add the Vick's vaper pads to help with coughs and colds. I'm sure we'll be needing to do that soon being in cold season! I also like that this one is easy to empty, fill, and clean compared to other humidifiers I've had. Very easy to use. I would definitely recommend to anyone looking for a new humidifier.
First let me say, this is so easy to use and unlock the cool mist feature and the fact that it is so quiet. I love white noise but some humidifiers can be overly loud and make sleep really unbearable. This one is just right and has 3 settings. Another great feature is the large tank size of 1 gallon so it last through the night and then some. I’ve definitely noticed cleaner air quality since using the humidifier and we don’t wake up stuffy. I do really care for the size and look of any humidifier as part of the decor but have to say this is not horrible but would like a sleeker look some day. I would for sure recommend this to anyone looking for a great, affordable, easy to use quality humidifier.
I’ve been using this in my bedroom at night the last 2 weeks and I really like it. I hoped to possibly reduce my husbands snoring after seeing something online about potential for a humidifier to help. The consensus is still out on that one- some nights have certainly improved but not all. I also have incredibly dry skin in the winter and I do feel this has helped with that. My skin is still dry but it’s not horrible which it always is this time of year. Lastly, it proves a wonderful white noise that helps me sleep! As far as the actual device- it’s so easy to use. Just fill with water and turn on. Very quiet despite my enjoyment of the white noise and the “gurgle” you always get with humidifiers is few and far between. Great product, and I definitely recommend.
| Whole House | No (for medium sized rooms) |
| Humidification Type | Cool Mist |
| Coverage Area | Medium, 400-600 square feet, Large Room Size |
| Water Tank Capacity | 1.0 gallon |
| Volume | 1 gal |
