Venta LW25 Airwasher 2-in-1 Humidifier And Air Purifier Review In 2022: Filter Free Machine!

Notice your furniture is, shirking, warping and cracking? This is due to the lack of moisture and Venta LW25 Airwasher 2-in-1 air purifier humidifier can help with you that. An evaporative powered device that not only will relieve you from allergies, it will also protect your indoor furniture. With so many different variants of Venta, why go with LW25 over the others? Is the filter-free setup capable of humidifying and cleaning the air compared with a HEPA model? Find out in our full review below.
online price (US)**
±349.99 $$$$$/ 7

(annual filter cost ±0-26)

** MRSP (Manufacturer's Suggested Retail Price)/ RSP (Retail selling price) is accurate at the time of posting.
^ Annual filter cost is calculated based on filter price and 12 hours of usage. Pricing could vary depending on air quality, usage frequency, and speed.
` The indicated online price guides as follows: $ = under $50, $$ = $50-100, $$$ = $101-200, $$$$ = 201-300, $$$$$ = $301-400, $$$$$$ = 401-500, $$$$$$$ = over $500.

Venta LW25 Airwasher Humidifier Specification

ProductVenta LW25 Airwasher Humidifier
13.7 x 14.9 x 7.6 in
(34.8 x 37.8 x 19.3 cm)
Weight8.5 lb (3.9 kg)
Coverage (up to)485 sq. ft. (45 m2)
Airflow speed
Dust free (CADR)
Pollen free (CADR)
Smoke free (CADR)
Humidifying(H) speed
- Lifespan
- Replacement cost ($)
HEPA filter
- Lifespan
- Replacement cost ($)
Carbon filter
- Lifespan
- Replacement cost ($)
Ionizer/ Technologies
UV-light/ PCO
Other filter
Water Treatment Additive
1 year+ 25.99
All-in-one filter
- Lifespan
- Replacement cost ($)
Ultrasonic Cleaning
Optional/ Addon
Humidifying Capacity
Water tank16 pints (2 gallons)
Noise level24 - 44 dBA
Power usage level3 - 8 W
Timer/ Scheduler
Sensorshumidity sensors
Auto mode
Air qualityAQ indicator
Filter change indicator
More color options
Wi-Fi/ BTBluetooth
Remote control
Child lock
Warranty10 years
Email/ Phone support

Key Features

  • Filter-free, Cold Evaporation technology
  • 2-gallon water reservoir with auto-shutoff and water level indicator
  • 3 fan speeds
  • Silent operation
  • 10 years warranty

Design And Usability

Venta LW25 Airwasher Humidifier dimension
13.7 x 14.9 x 7.6 in
(34.8 x 37.8 x 19.3 cm)
Venta LW25 Airwasher Humidifier weight
8.5 lb (3.9 kg)

At boxy 2-in-1 humidifier that looks big, but it’s smaller than you think. Venta LW25 Airwasher is not a pretty humidifier. You will not find any sexy curve, smooth panel surrounding the machine. At 13.7 x 14.9 x 7.6 in and 8.5 lb weight, it is about the size of a printer thus moving it around wouldn’t be an issue at all. Refilling the water can be a little bit tricky but there’s a water level sensor to guide you with it. Cleaning the humidifier can also be a bit hassle as internal parts including the disc stack would need to take out for an ultrasonic wash. Nevertheless, this 100% Germany made product has a solid build quality and durability for prolonged use. The entire components can be taken apart repetitively for maintenance without fail.

Venta LW25 Airwasher 2-in-1 Control Panel

Before we begin, take note that there are 2 different versions of LW25: Classic and Comfort Plus. Let’s focus on the Classic. Venta LW25 Airwasher 2-in-1 Humidifier and Air Purifier utilize a very simple control setup. You have the ON/ OFF button on the most left, indicators on the center, and fan stage selector button to the most right. When you turn on the humidifier, the circle indicator will light on. If the circle indicator is flashing, there could be a faulty setup. The 3 numbering indicator will light up according to the current fan speed you’re in. Press on the fan stage selector button to cycle between them. Lastly, the triangle down indicator will light up once the water-level indicator is low and perform automatic shut-down.

Airflow, Coverage, And CADR

Venta LW25 Airwasher Humidifier coverage
Purifying coverage
485 sq. ft. (45 m2)
Venta LW25 Airwasher Humidifier fanspeed

A weaker air purifying made up with a stronger humidifying. Venta LW25 Airwasher 2-in-1 has an impressive 485 square feet coverage. It is good enough to cover large room sizes from bedroom, basement, garage, to living hall. The large 2 gallon water tank will be enough to cover 1-2 days of dispersion without refilling. As for the cleaning mode, you have the standard 3 fan speed to fiddle around with. Auto mode and Sleep mode is reserved for the Comfort Plus model.

BrandPurifying CoverageFan Speed
Sharp KC-860U341 sq. ft.3
Oreck WK15500B Air Refresh115 sq. ft.4
BONECO W300 Air Washer Humidifier540 sq. ft.3
OPOLAR Evaporative EV01540 sq. ft.1
Venta LW25 Airwasher Humidifier485 sq. ft.3

Filters And Performance

How fIlter-free Venta LW25 Airwasher 2-in-1 Humidifier Air Purifier works is simple. First, indoor air impurities are sucked into the wet surface of the rotating disk plate. The disk plate will trap all kinds of impurities in the water like dust, mold, pet dander, smoke, odor, bacteria, and germs. The dry air will now be moisturized and release out as an invisible mist through a natural cold evaporation process. If the air pulled in is already damp, only air purification will be processed in the treatment water.

Noise And Energy Usage

Venta LW25 Airwasher Humidifier noise level
Noise level
24 - 44 dBA
Venta LW25 Airwasher Humidifier power consumption
Power consumption
3 - 8 W
The ideal air purifier humidifier for night use. Being an ultrasonic model, Venta LW25 Airwasher 2-in-1 has a very low noise level. You can barely hear any noise across its lower speed and slight humming noise when moving up. Power consumption is also low (less than 10 watts) even though we don't have the exact number yet. Automatic shut-off is available that will boost the machine energy-efficiency.
Noise TypeDecibels
Venta LW25 Airwasher Humidifier24 - 44 dBA
Breathing10 dB
Rustling leaves20 dB
Whispering/ Quiet library30 dB
Light rainfall40-50 dB
Conversation50-60 dB
Vacuum cleaner/ Hair dryer/ Washing machine65-80 dB
City traffic80-90 dB

Pricing And Maintainence Cost

Venta LW25 Airwasher Humidifier MRSP/ RSP
+- 349.99
Venta LW25 Airwasher Humidifier annual filter replacement cost
Annual Filter Cost
+- 0 - 26
^ Replacement filters/ estimated cost
Given the lack of any mechanical filters, Venta LW25 2-in-1 Air Purifier Humidifier price is slightly steep. That being said, the package does come with a superb humidifying plus an extensive 10 years warranty. What Venta Airwasher does stand tall is the filter-free setup. There is zero maintenance cost unless you want to include the water treatment additive. So pay now and enjoy no filter replacement cost for many years to come.
Venta LW25 is available at most retailers like Walmart or Costco but availability is scarce compare with Amazon. Last we checked, Amazon has the best deal with free shipping and 30 days no questions asked return policy. If you don't mind the hassle of opening a new account, you can also buy it from Venta's official website. It is slightly pricier but you'll get assurance that the air purifier humidifier is coming straight from the manufacturer.

Venta LW25 Airwasher Humidifier VS The Challengers

Honeywell HCM-350 Review

Honeywell HCM 350

Weaker humidifying but way cheaper and comes with UV and a wicking filter. However, HCM-350 is power by an evaporative technology that is different from LW25 Ultrasonic cleaning.
OPOLAR EV01 Evaporative Humidifier

OPOLAR Evaporative EV01 Humidifier

Cheaper, sleeker with marginally wider humidifying coverage. It uses a wicking filter to clean the impurities so there will be a recurring cost if you go with this option.


  • Filter-free Cold Evaporation tech that can remove white dust, pollen, pet dander, and other allergens.
  • Large room size humidifying that covers up to 485 square feet of space.
  • Energy-efficient setup that consumes no more than 8 watts.
  • Strong humidifying supported by a large 2-gallon reservoir with water level indicator.
  • Up to 10 years warranty on defects in material and workmanship.


  • A humidifier focus machine with limited air purifier support.
  • Pricing is on the high side when compared with competitor's model.
Venta LW25 Airwasher 2-in-1 Humidifier And Air Purifier Review

Max Fernandez

A loving father and a dedicated reviewer for airfuji.com with more than 1000 air purifiers under his belt. Max Fernandez is also one of the million patients currently suffering from asthma. Feel free to nudge him if you have any questions.
How Can I Help You Today?

I need air purifier that is to deal with for to be placed in the for with


Other Venta Air Purifiers