Winix HR900 Review In 2022: The New Ultimate Pet Air Purifier

WAC9500 is the ultimate pet true HEPA air purifier for "decades" (to us at least). It's time for the new replacement and in comes Winix HR900 PlasmaWave. The latest Ultimate Pet Air Purifier ever bestow! Learn more about the airflow output, features, and how well when fare with previous gen. Also, should you consider this over the identical HR950? Continue reading our Winix HR900 review below.
online price (US)**
±349.00 $$$$/ 7

(annual filter cost ±100-120)

** 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.

Winix HR900 Specification

ProductWinix HR900
16.3 x 23.6 x 9.6 in
(41.4 x 59.9 x 24.4 cm)
Weight18.7 lb (8.5 kg)
Coverage (up to)300 sq. ft. (28 m2)
Airflow speed56.5-197.8 cfm (96-336 m3/h)
Dust free (CADR)200 cfm (340 m3/h)
Pollen free (CADR)220 cfm (374 m3/h)
Smoke free (CADR)194 cfm (330 m3/h)
Humidifying(H) speed
- Lifespan
- Replacement cost ($)
HEPA filter
- Lifespan
- Replacement cost ($)
True HEPA filter
1 year
Carbon filter
- Lifespan
- Replacement cost ($)
Washable Advanced Odor Control (AOCTM) Carbon Filter
1 year
Ionizer/ TechnologiesPlasmaWave Technology
UV-light/ PCO
UV-C Light
20,000 hours
Other filter
Winix Ultimate Pet Filter
1 month
All-in-one filter
- Lifespan
- Replacement cost ($)
Filter T Replacement Set
1 year
+- 99.99
Optional/ Addon
Winix Ultimate Pet Filter U replacement pack (12 pack)
12 months+- 19.99
Noise level
Power usage level90 W
Timer/ Scheduler1, 4, 8 hours
SensorsSmart Sensor, Light Sensor
Auto mode
Air qualityAQ indicator
Filter change indicator
More color options
Wi-Fi/ BTBluetooth
Remote control
Child lock
Warranty2 years
Email/ Phone support

Key Features

  • 5-stage filtration with PlasmaWave™ Technology
  • Permanent and Ultimate Pet pre-filter
  • AOC Advanced Granular Carbon Filter
  • True-HEPA filter (99.97% efficiency)
  • 4 fan speeds - Low, Medium, High, Turbo, Auto mode/ Sleep mode
  • Timer (1, 4, 8 hours)
  • Air quality indicator - Blue (good), Yellow (fair), Red (poor)
  • Light sensor, Smart sensor
  • 2 years warranty

Design And Usability

Winix HR900 dimension
16.3 x 23.6 x 9.6 in
(41.4 x 59.9 x 24.4 cm)
Winix HR900 weight
18.7 lb (8.5 kg)

Winix HR900 is a modern approach to air purifier without sacrificing its practicality. At 16.3 x 23.6 x 9.6 in and 18.7 lb weight, it is exactly the same dimension as HR1000 so expect the same build quality. Carrying the air purifier is easy with the back handle. At the opposite side, there is an AQ indicator light that will change color to reflect on room air quality. When the bar color is Blue means air quality is good, Yellow = fair, and Red = poor. Like most Winix models, air inlet is at sides with many small vent holes at the front. Air outlet is at typical top right behind the controls.

Winix HR900 control panel

Speaking of controls, there are 6 clickable buttons plus Smart and light sensors on top. Starting with the Power button that we are all familiar with. Right above it is the filter reset button that is only used after you replace with a new filter set. Press and hold the button for 5 seconds to complete the filter countdown timer reset. Mode button will cycle between Auto, Sleep, Low, Medium, High, or Turbo speed. PlasmaWave button will activate/ deactivate the features on press. Timer button will cycle between 1, 4, 8 hours and no timer on press. Press and hold for at least 3 seconds will enable/ disable the Air Quality light. Lastly, child lock will lock all functions when you press and hold the button for at least 3 seconds. This prevents children from meddling with the air purifier controls. To your most left, there is the Smart Sensor used to detect nearby air quality. The light sensor checks ambient light and auto adjusts the LED indicators brightness.

To recap on HR900 long list of features, you have AHAM, Ozone-safe certified, UL listed, and ENERGY STAR. 5-stage filtration with Ultimate Pet Filter U. 4 fan speed plus Auto, and Sleep mode. AQ indicator light, Child lock, and 2 years warranty.

Airflow, Coverage, And CADR

Winix HR900 coverage
Purifying coverage
300 sq. ft. (28 m2)
Winix HR900 fanspeed
Winix HR900 air purifier improves drastically of the previous WAC9500 with a 300 sq. ft. purifying coverage (2 air charges). This would cover well on your cat or dog that roams freely in your home. The stable airflow delivery rate is proven to be useful for spreading across the 4 fan speed. There is also Auto mode that allows autonomous speed adjustment on nearby air quality. Sleep mode will turn off all indicator light and set the speed to low for bedtime use.
Winix HR900 dust CADR
200 cfm (340 m3/h)
Winix HR900 pollen CADR
Pollen CADR
220 cfm (374 m3/h)
Winix HR900 smoke CADR
Smoke CADR
194 cfm (330 m3/h)
Clean air delivery rate also sees much improvement from its predecessor. Dust CADR is at 200 cfm, Pollen CADR at 220 cfm and Smoke CADR at 194 cfm respectively. Above average as one should expect no less from Winix standard. Being a pet allergen machine, pollen CADR is key for irritants removal and that's where HR900 does well.

Filters And Performance

This is called the ultimate pet air purifier for a reason. Starting with the first line of defense against pet hair and dander. You have the add-on Ultimate pet pre-filter and the standard, washable pre-filter. Both work simultaneously well with each other. Next is the AOC Advanced Granular Carbon Filter. The carbon filter will capture smoke and pet odors well and extends the HEPA life. With the True HEPA filter well-protected, no bacteria or germs will be able to fly back out. The HEPA filter efficiency is rated at 99.97% efficiency on microorganisms as small as 0.3 microns. Ending the filtration is Winix own PlasmaWave Technology. The PlasmaWave will safely break apart allergens and chemical vapors at a molecular level.

Dust mites, pet dander, bacteria, and germs are no biggie for this air purifier when you have 2 pre-filter. Adding a 300 square feet and True HEPA filter, no mold, pollen, or mildew will be able to fly pass HR900. AOC carbon filter is ready to trap any pet odors plus chemicals vapor from cigarette, radon, or VOCs.

Noise And Energy Usage

We don't have the official noise figure for HR900 and we are not going to test it since is similar to other Winix models. It's safe to assume the bar would be between 20 - 60 dB. In any case, Sleep mode would be the go-to setting for bed time use. Power usage is at a max 90 W (Turbo speed). It might seem high but compare with other appliances, it is not. Don't forget there is Auto mode that will manage your fan speed thus the energy consumption rate.
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

Winix HR900 MRSP/ RSP
+- 349.00
Winix HR900 annual filter replacement cost
Annual Filter Cost
+- 100 - 120
^ Replacement filters/ estimated cost
Winix HR900 is very well priced and expect not more than 300 dollars after online discount. Is it reasonable for a pet air purifier? Absolutely. Is it the best deal for a generic air purifier? It depends. You can easily get most Winix air purifier and stuck an ultimate pet filter in it to achieve a similar result. Filter replacement wise is plentiful but not cheap. The bundled pack (HEPA + carbon) cost close to 100 excluding the ultimate pet filter. Since you are going to use the air purifier for many years ahead. There are cheaper choices if the recurring cost is your concern.
Forget about retailers stores like Best Buy or Walmart. Amazon is the place to be. Save at least 100 off MRSP with free shipping (Amazon choice). There is also the 30 days no questions asked return policy if you are not happy with it. You can compare with Winix webstore that offers seasonal sales with free shipping. We doubt the price gap is going to be huge, but you can give it a shot.

Winix HR900 VS The Challengers

Winix HR950 5-Stage-Air-Cleaner-0

Winix HR950

Around the same price but with better purifying coverage, CADR, and anti-microbial coating. While you're at it, why not consider HR1000 that is priced slightly higher but is Wi-Fi enabled. Super cool.
Winix 5500-2 Review

Winix 5500-2

Is Pet filtration really your thing? If not Winix 5500-2 would be a better bet with better airflow performance, CADR, and a cheaper price tag. Plus, it is also compatible with the ultimate pet filter.
GermGuardian AC5250PT Air Purifier Review

GermGuardian AC5250PT

If you need a cheaper, slimmer air purifier with UV-C light and antimicrobial, look no further. Performance wise it is incomparable to HR900.
Coway Airmega AP-1512HH Mighty Air Purifier Review

Coway Airmega AP-1512HH Mighty

Judging solely based on airflow delivery rate, Coway Mighty wins hands down. There is also the very low filter replacement cost advantage. However, purifying is more than just airflow, there is also filters to contend with.

Final Thoughts On Winix HR900

Is a little bit too early to judge on Winix HR900 as there are only 32 reviews on Amazon. Out of that, 97% gave it 4-5 stars that praises mostly on the 5-stage filtration strength. No surprise gave the usefulness of the True HEPA and AOC carbon filter. Other positive feedback includes durability, features, and pricing. Most reviewers are happy that their allergies reduced since the day HR900 arrived. You should expect the same outcome since most reviews are still very new. Remember this space if you want to find out about other comments users have updated since.


  • Decent pricing for a 5-stage filtration specialized in pet allergies.
  • 300 square feet purification is a big leap from the previous WAC9500 model.
  • Double protection with Ultimate pet pre-filter on top of the existing pre-filter.
  • Dependable True-HEPA and AOC carbon filter that is effective with contaminants.
  • Powerful 4 fan speed plus Auto mode and Sleep mode.
  • Built-in timer and child lock that is easily accessible through the control panel.
  • Improved 2 years warranty than the previous 1-year warranty.


  • High annual filter replacement cost especially if you add the ultimate pet filter.
  • Slightly expensive as the cheaper Winix 5500-2 can do the same job with the ultimate pet filter add-on.
  • Smart sensors inconsistent reaction time with the surrounding airborne particles.
Winix HR900 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.
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