LW15 Original Humidifier Black - Filter-Free Evaporative Humidifier for Spaces up to 300 ft²

I've had the Venta LW25 for about 2.5 years now. It has been trouble free and works well humidifying the air and cleaning the air. You need to add the Venta water treatment, once every two weeks when you clean the unit. I simply "rinse" it out and use a paper towel or cloth to wipe it out. Once a season I use the Venta cleaner. It is a bit tough to remove mineral deposits, but otherwise it is very easy to fill, use, rinse. When you clean it after two weeks you can see the sludge in the bottom of the tank of debris it has pulled out of the air. For my house, which is forced hot air, a full tank usually lasts 40-48 hours unless it is extremely cold, then it lasts 24-36 hours. (other types noted below, even with larger tanks would be a max of 24 hours). We usually leave ours on the medium fan speed and it is a nice background noise. If it is really cold or if the unit ran out of water for a while, we use the high speed which still isn't too bad. I've used boiling water (dangerous & energy hog), cold air filter types (filters grow mold in a matter of weeks), and ultrasonic for years. I've been using various types of humidifiers for years (20-30 years) due to sinus and/or winter allergies. If I don't use a humidifier in winter, I also get bloody noses, which I haven't had since I've been using this unit, so that is a good sign that it is humidifying the air. I got tired of trying to clean the boiling water types and the energy bills. Looking at the cold air filter type, It can't be good to spread mold around the house and cleaning it was also troublesome and replacement filters are costly regardless of the brand. As for ultrasonic, they worked the best of the other three BUT they ruined several pieces of furniture and some wood flooring from their "white dust" mineral laden output. Granted the water in my area is mineral laden but I can't do much about that. I also found it to be a pain to clean it weekly, very tough to get into all the nooks in cranny's of the brands I've had. Of the three styles, I liked the Ultrasonic the most, but I can't live with the damage they have done. As for the Venta - it is much easier to refill, I use a pitcher, easier to clean than any of the other styles, and I have to fill it less often because the tank holds more water. Unlike other types, it automatically shuts off when it is out of water. YES it is more expensive than a lot of other humidifiers on the market, but in the end both my wife and I are very happy with the unit. Also, worth considering is there are no filters to replace, so if you do the calculations over a few seasons, the VENTA starts to look pretty competitive. You need to purchase the water treatment, which a bottle lasts most of the season, and the cleaner solution for use once or twice a season. For a season, these both cost less than one set of filters which typically last 2-4 weeks. The cold air filter type humidifiers are kinda like the Razor blade business, they often give a away or sell the handles cheaply, but they get you with the replacement heads (filters). All in all a great unit. Good size water tank for extended use, no filters to replace, comparably easy to clean. Obviously I'm a fan of the VENTA 25 units. I recently purchased the larger VENTA 45 for the living room!

It has been over 5 years since my original purchase. I now own dozens of these either in my homes or in my laboratories or offices. I use the LW25's in guest rooms or smaller rooms and the LW45 (and now the new 6 series). I have to say the Venta is the best of all humidifiers, on all points. It has the most intelligent and easy disassembly of any humidifier I've owned, making cleaning it a simple breeze. It is quiet on high speed and pumps out a LOT of humidity. Every single component is EASILY replaceable and very inexpensive, direct from Venta Germany (with free shipping). No other humidifier on the market has every single component replaceable. NONE. Something breaks on ANY other humidifier...you must buy a whole new unit. These are pricey for what they offer and has rather simplistic technology... but they ARE effective and very quiet. If I was going to space on a long journey, you would want to take one of these. With the minimal amount of moving parts and components, this has a very low failure rate, and in the rare situation when it might fail, at least you're not at a total loss and can easily replace the failed component. However I have used mine 24/7/365 for over 5 years and JUST this year in 2019 I replaced a single motor in my LW25, for $30 direct from Venta. For me, dust levels around all of my robotic and computer equipment was a major focus of effectiveness. In my laboratories maintaining the precise humidity is critical for the specimens. I had purchased over 23 other humidifiers and none of them compared to the Venta. Some reviews complain about the grime or "white crust" in the humidifier after a few weeks. This is your poor quality hard water mixed with dust that the Venta has collected from cleaning your air. This is not some magical biological production from the Venta. Cmon people, simple science. You do not have to purchase the bacteriostatic agent from Venta (the cleaning fluid) although I recommend it because it is better for the plastic (less chemically abrasive) and reduces the amount of any algae or bacteria in the unit over time. If you are cheap you can always buy a $3 bag of pool shock (Calcium Hypochlorite) and mix half a TSP with 1 gallon of water. The $3 bag should make approximately 3500-4000 gallons, so as long as you store it properly, it will last you a lifetime. Apply 30ml of the Calcium Hypochlorite (pool shock) mixture to your (already filled with clean water) Venta. This will assist in bacterial reduction but it is more chemically abrasive than the Venta fluid. I have used this method in a couple of my laboratory units and this has not damaged them over several years, however if you dose too much of the Calcium Hypochlorite, the area will smell chlorinated like a pool/spa. Keeping the unit from any direct sunlight also helps tremendously in preventing any bacterial buildup. If you choose to not use anything at all, over time you will experience calcification on the inside, the dust being captured by the fans will eventually fall into the water reservoir and eventually the (over time) fishy smell of the algae and bacteria will attract fungus gnats. Real swampy ecosystem without cleaning. Just like any humidifier on the market. Except that this one is easily cleaned...and again, has all replaceable parts. For my home...With 1 LW45 Venta inside a 600sq ft room, there is a large difference in reduction of airborne dust and smells within 15 minutes. Sinuses feel much clearer with humidified air. This means no crusty boogers and a less likelihood of snoring. Specifically during Winter when the heater is running more, the humidity in the house plummets, causing dry nose and dry lips, the Venta units fix that. Simple science people. So for $400 you get cleaner air which is better for your skin and lungs and no crusty boogers or snoring from your spouse. I'd say that's $400 well spent. Only wish I'd have purchased the white one.

I really need this product. It has been bought from Germany and sent via the US which is the only way I can do this. I am really unhappy that it isn't working. It had very good reviews and is exactly what I am looking for.

Great hunidification, the air cleaning works amazing as the water is definately getting very dirty, and the reservoir size is good as it last a one full day. Living in Canada in Kelowna in winter, which is dry. Took the humidity of a 900 square foot space from 21% to 42% in about 4 weeks. The surrounding area takes time to absorb and humidify so it does take time to get to the specified humidity but it does work very well. Great product!

Buscando humidificadores, la mejor experiencia me la ha dado Venta. He tenido dos; uno que dejo de funcionar poco más de diez años, después de 12 años de uso y el que lo reemplazó, ahora ya con 10 años de servicio. Este es ahora el tercero, más pequeño para mi oficina. En pocas horas logró aumentar la humedad para hacerla más confortable.

The Venta LW45 I received has a defective power adapter cord. The fan cycles on and off about every half second which causes the fan turn in a slow jerky motion. The blue power light and numeric speed indicator also flash intermittently. Pressing the speed button doesn’t change anything and pressing the power button won’t shut off the unit. Fortunately, I also have a smaller Venta unit (LW25) that works well. I swapped fans and the problem persisted, so then I swapped the power adapter cord and the problem disappeared -- the LW45 worked perfectly. It appears that a defective power adapter was cycling the power which caused the jerky fan operation. If the vendor quickly sends me a replacement power adapter that works, I will revise my rating. Dec. 29, 2018 Update: After contacting Venta Customer Service, a replacement power adapter was promptly shipped to me via FedEx. This power adapter worked properly and now my Venta LW45 works as it should. It runs quietly and provides the needed humidification to prevent itchy dry skin and static shock during our cold dry winters in Western Canada.

I deeply regret purchasing the Venta Humidifier Air Washer from this seller. It was marketed as a high-quality, long-lasting product—a worthwhile investment. However, it failed completely in less than a month of use. What’s worse? The seller outright ignored my requests for help. Despite being only slightly beyond the 30-day return window, they refused to address the issue, leaving me with an expensive, non-functional product. No repairs, no exchange, no refund—just silence. This level of negligence is unacceptable. If you value your money and expect even basic customer service, avoid this seller at all costs. I will escalate this further until they provide a resolution. Buyers, beware: you are on your own once they have your money.