Winix HR900 Air Purifier: Trusted Review & Specs

The Winix HR900 is the most basic model in the Ultimate Pet series, which is superseded by the Winix HR950 and Winix HR1000 today. However, it still has plenty going for it, including an unique double pre-filtration and the dust sensor that is missed in even the Winix P450 and Winix U450. After many years joining many lists of best air purifier, let’s check if this air purifier is still good or not in our Winix HR900 Review.

Winix HR900 ranks B in our air purifier ranking list

In Breathe Quality, we have reviewed all air purifiers under these sections. Also, we guarantee that:

  • We do give honest reviews (both pros and cons) so anyone will guarantee to have the wisest choices.
  • We do not (and never) exaggerate one product just to let you click the links and buy that product blindly.


winix hr900 review

  • All-round performance
  • Double pre-filter for pets
  • Smart design
  • Overall great for the price

  • High filter replacement cost
  • Lacks of voice control

I bet that most of you – the audiences of Breathe Quality, are looking for Winix is because of the today Winix HR900. Of course, this Korean brand has a strong foundation and development in American air purifier market, since 2004. The Winix HR900 is also one of the best air purifiers reviewing from many other websites (and us, too) in the previous years. So, even after the release of the new Winix HR1000, what is the reason to buy this air purifier? Let’s find out in the Winix HR900 Review.

Winix HR900 Price

The Winix HR900 is the cheaper alternative to the Winix HR950 and Winix HR1000, of course, the name tells us everything. However, you should know that the Winix HR900 is the only one of the three Ultimate Pet Series to have the double pre-filtration. This air purifier trades away advanced features like the anti-microbial layer, and moreover, the Smart Wi-Fi function to knock the price down to a level budget buyers will be more comfortable with.

And yes, it still has stunning value and is also one of the best air purifiers in the class of $300-ish. Funny, the others that can compete with Winix HR900 is nothing but its brothers, the Winix P450 and even Winix U450. Both the latter ones feature a much higher CADR rating, to allow them clean your room much quicker.

This Winix HR900 price was $349, but is has dropped to a point you can easily buy it, as low as $219 from Breathe Quality’s deal. Actually, most Winix air purifiers can be found with much lower price than the official price from Winix website, so you should always check price on Amazon first.

But what about others? Some of them are great in this price range, for example Philips 2000i, Medify MA-40 and Blueair Classic 205, as they have the top modern smart function, just like the new Winix AM90 can do. The Levoit LV-H133 is powerful and more popular than the Winix HR900, thanks to its very loyal community. If you can afford more, you can select between the Austin Air HealthMate Jr, GermGuardian AC9400W and Sharp FP-A80UW. They have more fan power than our today unit, as well as some new cool air filtration technologies.

Top Winix HR900 deals right now

Winix HR900 Ultimate Pet True HEPA PlasmaWave technology air purifier 300 sq ft, White.

The next generation of the wildly popular Winix WAC9500 Ultimate Pet Air Purifier. The Amazon’s Choice and Energy Star rating.

Related post: Best air purifier 2022.

Winix HR900 Design and Size

The first generation of new Ultimate Pet air purifier marks the first time Winix has used this design concept in this series. Well, aside from the front panel, which has been filled with perforated grill and lately removed from the Winix HR950.

And yes, it is the innovative design from this company, which allows your air purifier to pull in as much polluted air possible from not only the front, but also the sides and the bottom. It is also featured on other series like Winix U300 or Winix U450, but only the Winix HR900 makes use of the perforated grill. To be fair, the perforated grill is what makes the Winix C535, and later, the Winix C555 the most successful air purifiers in Korean market.

The Winix HR900 is 23.6 inches in height, a similar height for nearly every air purifier in low-range segment of this brand. It keeps the air purifier steady and firm enough to hold on the ground.

Other than that, you have the same traditional bottom-to-top air flow concept from this Winix HR900, which runs through the air intake grill 360° around the front plate to the top air outlet grill. This air purifier is the old device at the moment, and it won’t have the automatic opening function for air outlet like the Winix HR950 and Winix HR1000.

There are a few important elements that make the plastic body seem quite classy. First the Winix HR900 is white, and the white color is still the best option for the plastic body. And the side air grill is covered with rubber instead of just being plain like in the cheap ones. It is also increasing the efficiency of Winix HR900 against pet hair and fur.

About the top control panel, for who are familiar with the Winix HR950, it is exactly the same control panel. If you don’t know, I will talk about it more in the Addition features section later.

winix hr900 review


The Winix HR900 has the same weight of 18.7 lbs like any air purifiers in Ultimate Pet Series, which is easy to move around your home.

Related post: Best air purifiers for bedroom.

Winix HR900 Filters

One thing that you can find in all Winix air purifiers is the number of stages in the air cleaning system. Normally, to decide the performance of an air purifier, we should look at how many air filters and what air filter types are used. The Winix HR900 uses 5-stage air cleaning system, but it is quite different from the one featured in the flagship Winix HR1000.

  1. Ultimate Pet Pre-filter – The first line of defense which can trap the largest particles like pet hair, fur and even pet dander. For optimal performance, it is recommended to change this filter once every month.
  2. Pre-filter – Then the polluted air will pass the fine mesh pre-filter, which is washable and can extend the lifetime of remaining filters by removing the large objects of pollutants.
  3. Activated Carbon filter – The Activated Carbon filter is able to deal with the pet odor by adsorbing it. This air filter can also deal with the chemicals and VOCs.
  4. True HEPA filter – The True HEPA Filter that captures 99.97% of down to 0.3 microns allergens, virus particles, pollen, mold and fungi particles.
  5. Winix PlasmaWave – This technology is one kind of ionizer, which can further reduce the amount of pollutants. Can be switched on/off.

In low to mid-range segment, we can only find the Winix HR900 to have the double pre-filtration. However, unlike the premium air purifiers like Austin Air HealthMate or Rabbit Air MinusA2, the Ultimate Pet pre-filter is just like a paper filter, to capture the large dust and pet hair. This pre-filter can easily be broken, and needs to be replaced regularly.

Don’t forget that the signature air filtration system of Winix offers the combination of True HEPA filter and PlasmaWave Technology to not only trap the contaminants, but create the hydroxyls to break the contaminants into water molecule. So to say, the Winix HR900 is one great air purifier for the price.

winix hr900 review


To test the performance of Winix HR900, I still used the large room of 200 square feet, and locked the Winix HR900 running for 1 hour against many types of pollutants. I added the Rabbit Air BioGS 2.0, Oransi OV200 and Levoit LV-H133 to test the performance of this air purifier. As the result, the Winix HR900 can’t clean as quick as the Winix HR1000 and Levoit LV-H133, but the efficiency is still very high, up to 99.92% for trapping any particles down to 0.3 microns. The Oransi OV200 is the lowest performance of all, with only 99.5%.

winix hr900 review

Just like the successors, Winix HR900 uses the filter T, costing you around $99 for annual filter replacement. Of course, it is higher than others in the same price range, like Levoit LV-H133 is only $84, or Alen BreatheSmart 45i with only $59.

Related post: Best air purifiers for allergies.

Winix HR900 Room Coverage

With the suggested room size for only 300 square feet, we can predict the Winix HR900 to have much lower fan power than the Winix HR1000.

The ACH of Winix HR900 is 4X. The Winix HR900 is still great at cleaning your room every 15 minutes.

The CADR of Winix HR900 is 200 Dust/ 194 Smoke/ 220 Pollen (cfm). The CADR rating of this air purifier is capable for the room coverage of 300 square feet, but it is still a bit lower than a $200 Coway AP-1512HH.

Related post: Best large room air purifiers.

Winix HR900 Sound

The internals of Winix HR900 looks much like the mixture of Winix P300 and Winix HR950, so we can expect a very silent operation running in its vein. Perhaps the section is also one of the strongest advantages of Winix, as they can keep all air purifiers around the threshold of 26 decibels (db), a noise level of a whisper.

So to say, Winix HR900 can handle the noise far better than even the Alen BreatheSmart 45i or Levoit LV-H134.

Related post: Best air purifiers for baby.

Winix HR900 Power Consumption

One of our most FAQs is “Do air purifiers use a lot of energy?” In fact, air purifier must be used for a long time to be efficient. And power consumption is one important criteria to review if this air purifier is good or not.

In contrast with the silent operation, the power consumption is always the disadvantage of this Korean brand. For a portable home air purifier like Winix HR900, the power consumption of 56 watts is quite higher than the Alen BreatheSmart 45i (only 38 watts) and Rabbit Air BioGS 2.0 (as low as 5 watts). Still, Winix HR900 has been certified by Energy Star for being energy efficient.

For 8 hours of using per day, Winix HR900 would cost you around $20 per year.

Related post: Best air purifiers for pets.

Winix HR900 Additional Features

This could easily be the most important area to cover in any air purifiers of Winix, because whatever the air purifier you are going to use, it will have the Smart Sensor. Talking about the Smart Sensor, this is the key factor to buy one air purifier. It responds to any change in indoor air quality, and reports via the light notification on the front. With 3 different colors, you always know the quality of your air.

Moreover, by activating the Auto Mode, you can utilize the Smart Sensor to next level. The Winix HR900 can automatically adjust the fan speed to meet the demand of your indoor air, meaning it will run on Turbo setting if the air quality is poor, and reduce whenever it is fine again.

winix hr900 review


The Winix HR900 still has the Sleep mode to be selected specially in the bedroom, which switch to low fan speed and disable the light notification. The light can also be turned off automatically while this air purifier is in Auto Mode, as the Winix HR900 packs a light sensor to detect the amount of ambient light in your room.

Finally, just like the Winix HR950, you will have the child lock and timer functions in this Winix HR900.

Related posts:

1, Best air purifiers for smoke.

2, Best air purifiers for dust.

3, Best air purifiers for mold.

Winix HR900 Customer Service

Established over 40 years ago, in 1973, the Winix company is truly an expert in air purifier industry. They have many headquarters, not only from Korea but also from both the U.S and Europe. ou can reach them both via phone or email, from 9 to 5, Monday to Friday. If you have trouble calling them, you can email the Winix America at

In official website, they are selling both new and certified refurbished air purifiers, of course with free shipping in the U.S only. For Winix products, the Winix Limited Warranty is from 1 year to 5 years, depending on the products. During the warranty period, Winix will repair or replace the product if it fails because of a defect in material or workmanship, as determined by Winix. Remember that this warranty will be null and void if the product is used for purposes other than home, consumer purposes.

Top Winix HR900 deals right now

Winix HR900 Ultimate Pet True HEPA PlasmaWave technology air purifier 300 sq ft, White.

The next generation of the wildly popular Winix WAC9500 Ultimate Pet Air Purifier. The Amazon’s Choice and Energy Star rating.

Our verdict

The Winix HR900, though being outdated, is still a great air purifier for pet owners. The PlasmaWave technology is truly the key to enhance the performance of Winix air purifiers to next level, and you can’t go wrong with the high-quality True HEPA filter from this brand.

  • Performance
  • Features
  • Annual Cost
  • Design
  • Price


One of the best air purifiers for pets, because the Winix HR1000 was discontinued.