OPOLAR EV01 Evaporative Humidifier And Purifier Review In 2022: Affordable 2-in-1 Machine!

POLAR EV01 2-in-1 Humidifier is not the household name you would associate with. Many would miss out on this little device despite being great at removing impurities and improving room humidity. So why many people would give this air purifier humidifier a pass? Can it help with your allergy issues, dry skin, scratching throat or cracking wood furniture problem? Find out all the answers in our review below.
online price (US)**
±79.99 $$/ 7

(annual filter cost ±21)

** 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.

OPOLAR Evaporative EV01 Humidifier Specification

ProductOPOLAR Evaporative EV01 Humidifier
13.7 x 14.9 x 7.6 in
(34.8 x 37.8 x 19.3 cm)
Weight6 lb (2.7 kg)
Coverage (up to)540 sq. ft. (50 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 ($)
Ionizer/ Technologies
UV-light/ PCO
Other filter
OPOLAR EV01 Replacement Wicks (2 packs)
1 year+ 20.99
All-in-one filter
- Lifespan
- Replacement cost ($)
Optional/ Addon
Humidifying Capacity
Water tank6.4 pints (0.8 gallons)
Noise level
Power usage level18 W
Timer/ Scheduler2/ 4/ 8 hours
Auto mode
Air qualityAQ indicator
Filter change indicator
More color options
Wi-Fi/ BTBluetooth
Remote control
Child lock
Warranty18 months
Email/ Phone support

Key Features

  • Single filtration with humidifying function and water tank with indicator
  • Permanent pre-filter
  • Ionizer that can be switch on/ off
  • Honeycomb embedded filter that traps mineral deposits and grey dust
  • Single operation with Quiet mode
  • Touch sensitive controls
  • 3 preset timer

Design And Usability

OPOLAR Evaporative EV01 Humidifier dimension
13.7 x 14.9 x 7.6 in
(34.8 x 37.8 x 19.3 cm)
OPOLAR Evaporative EV01 Humidifier weight
6 lb (2.7 kg)

For an evaporative humidifier and air purifier at this price range, OPOLAR EV01 build quality is commendable. The entire structure is well-fitted with no sign of leakage, vibration or condensation. At only 8.4 lb in weight and 11.9 x 17.5 x 9.4 inch in size, moving the humidifier is an effortless task with both hands caring. Right at the top, you have the bezel air outlet grille and a center water inlet for mist dispersion. The top filter cover can easily be taken out for water refilling and cleaning. Right on the side, there’s a water level window and overflow hole for a convenience lookout. Moving to the bottom, there’s a hidden small water outlet cap next to the rubber seal that hardly anyone will use it.

OPOLAR EV01 Evaporative Humidifier

Let’s talk about the front semi-digital control. There are 5 buttons on the black panel with indicators on each button. The center red button will turn on/ off the machine. THE top ION button will activate/ deactivate the anion function. On either side, you can either activate standard mode which has high mist output or quiet mode with low mist output. The blue indicator will lit up letting you know what mode you’re in. Lastly, there’s a bottom timer button that will cycle between 2h, 4h, 8hr preset.

Airflow, Coverage, And CADR

OPOLAR Evaporative EV01 Humidifier coverage
Purifying coverage
540 sq. ft. (50 m2)
OPOLAR Evaporative EV01 Humidifier fanspeed

Produce about 200 ml/ H of invisible cool moisture output, OPOLAR EV01 has more than adequate airflow output in standard mode. In quiet mode, the low moist output is only meant for close-range or night time use. With a slightly smaller 0.8 gallon water tank, you can still run the air purifier humidifier all-day without refilling. No issue if you are planning to use it in a small room next to your bed, sofa, or work desk.

BrandPurifying CoverageFan Speed
Sharp KC-860U341 sq. ft.3
Oreck WK15500B Air Refresh115 sq. ft.4
BONECO W300 Air Washer Humidifier540 sq. ft.3
Venta LW25 Airwasher Humidifier485 sq. ft.3
Honeywell HCM 3503

Filters And Performance

OPOLAR EV01 relies on the standard evaporative technology with the support of an ionizer. First, the ionizer will make airborne impurities fall from the sky due to the heavier weight. Then the humidifier will be pull in the dry air through the soaked wicking filter. The ultra-thin fiber made honeycomb filter will then block out all the unwanted impurities from the air. This includes dust, mold, pollen, bacteria, and pet dander. As the air is now purified, it will take it the water and evaporate clean mist into the air. With optimum humidity, OPOLAR EV01 will gradually improve the surrounding air breathability. It will also help control allergies, moisture dry skin, and protects furniture from dry crack.

Noise And Energy Usage

OPOLAR EV01 noise level is on the low side regardless of which mode you're in. With the built-in low-pitched fan, expect minor fan noise at standard mode and virtually silent in quiet mode. Perfect for a peaceful goodnight sleep. Being an evaporative humidifier, power consumption is also on the lower end at an average of just 18 watts per hour. Expect an even lower power output with ionizer off and in full-time quiet mode.
Noise TypeDecibels
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

OPOLAR Evaporative EV01 Humidifier MRSP/ RSP
+- 79.99
OPOLAR Evaporative EV01 Humidifier annual filter replacement cost
Annual Filter Cost
+- 21
^ Replacement filters/ estimated cost
A 2-in-1 evaporative humidifier with a digital control and ionizer for less than 80 bucks. Needless to say, OPOLAR EV01 gets a pass in our affordability book. Same goes with the filter replacement cost, at around 21 dollars annually, you'll get 2 wicking filters that should last you for an entire year. Still, OPOLAR EV01 cannot be used as a substitute for an air purifier due to the limited filtration depth. You will be better off with another separate air cleaner running alongside it.
As mentioned earlier, OPOLAR is not a major player compared with the likes of Honeywell, Oreck. It is available on OPOLAR official website but the buying experience is a bit of let down. So forget about your local retailers and purchase it straight from Amazon. It has the best deal, comes with free shipping, manufacturer's warranty, and 30 days return policy.

OPOLAR Evaporative EV01 Humidifier VS The Challengers

Oreck WK15500B Air Refresh

Oreck WK15500B Air Refresh Humidifier

Remember we mentioned that EV01 might be lacking in the air purifying department? Oreck WK15500B remedies all that with a complete HEPA carbon filtration. Prepare to pay for a hefty price though.
Honeywell HCM-350 Review

Honeywell HCM 350

About the same pricing minus the smaller purifying coverage and ionizer. Honeywell HCM-350 does come with an all-important UV-light filtration and a much sleeker design.


  • Cost less than 100 for a compact air purifier humidifier with wide humidifying coverage.
  • Honeycomb filter works well with the ionizer to capture mineral deposits and grey dust.
  • Very low energy usage at around 18 watts.
  • Sensitive controls with 3 preset timers.
  • Whisper-quiet operation with or without quiet mode.


  • Mediocre airflow and humidifying output that is only suitable for close-range use.
  • Requires constant refilling because of the small water tank (0.8 gallons).
  • Not an air purifier oriented model with the omission of HEPA and carbon filter.
  • No sensor, humidistat or air quality indicator in the setup.
OPOLAR EV01 Evaporative Humidifier

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 OPOLAR Air Purifiers