The Winix HR900 Air Purifier

Winix HR900

I love my dogs and my friends love my dogs the only problem was that they were less keen on the lingering doggy smell. Despite hoovering every day and regularly grooming the dogs, I just didn’t seem able to get on top of the problem.

This was when a good friend diplomatically suggested an air purifier! Then there were weeks of research to find the right unit which didn’t just purify the air but was designed for this particular problem. The Winix HR900 ticked all the boxes!  With its ultimate pet pre-filter, all the hair and dander gets removed instantly reducing doggy odors in the home. It then has an additional 4 stages before the air is fully treated and cleansed beautifully.

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  • Affordable pricing for a 5 stage purifier.
  • Washable fine mesh pre-filter.
  • Plasma wave technology to break down particles.
  • Great functionality with sleep mode, auto mode, built-in timer and child protection mode.
  • Some claims that the plasma wave technology is an irritant for those with asthma
  • Replacement filter cost is at the higher end.

Key Features of the Winix HR900 Air Purifier

1.  Five Stage Filtration System

On of the key features of the Winix HR900 is the five-stage filtration system. If you’ve looked at other units then you’ll know that many only have a three-stage process. Five is going to give a much better level of performance with the air needing to pass through each filter to complete the cleaning process.

The filter system of the Winix HR900 includes:

Ultimate Pet Pre-filter

This filters the largest particles within the air and that may include pet hair and dander. Winix recommends changing this filter once a month. 


This washable fine mesh filter then catches the larger airborne particles. In doing this it also extends the lives of the other filters.

Washable Advanced Odor Control Carbon Filter

This carbon filter absorbs the gaseous pollutants and odors, not only from pets but coming from the kitchen and cigarette smoke as well.

HEPA Filter

This is the filter which really gets the job done. Capable of filtering the smallest particle of fungi and virus right down to a size of 0.3 microns.  When you consider that a human hair is 90 microns you can now understand why it’s capable of removing up to 99.97 percent of the pollutants.

Plasma Wave Technology

This final stage breaks down any remaining particles at a molecular level. This stage can be switched off as some believe that ionization may irritate individuals who have asthma problems.

Winix filters
2.  Design Features

The Winix HR900 has a unique design that allows it to catch air from all sides providing a much higher throughout than many models of the same size. It has height of 23.6 inches so small enough to be unobtrusive in most settings. At a weight of 18.7 lbs. moving this air purifier from room to room is no problem at all. 

3.  Air Quality Indicator

We love this feature! The Winix HR900 has an LED light on the front cover. As the air quality changes then so does the color of the light.  For night time use you can turn the light off so as not to disturb your sleep.

4.  Specification

The HR900 is recommended for use within a room of around 300sq.ft. The CADR ratings are Dust-200, Pollen 220 and Smoke 194. Winix, who have offices in the US, offer a two year repair or replace warranty on this model.


From reading the reviews available on the internet, most users of Winix HR900 air purifier seem very happy with their purchase. 

No more wet dog smell!

Quiet to use, can simply set it to go and forget about it.

A little loud on the turbo setting but it does get the job done.

I can breath easily again!

Alternatives to the Winix HR900

Pure Enrichment Pure ZonePure Zone Air Purifier

Although this product looks very sleek, it uses UV light technology to destroy microorganisms.  While it can help how well the system works, I’ve found that this technology can, in some cases, be harmful to the environment. This still looks a very good option though and is worth considering despite being more expensive.

+ HEPA filter
+ 5-years warranty
– LED indicator lights are too bright
– Not designed for large spaces

Germ Guardian 4825The Germ Guardian

This air purifier comes very highly rated. In my opinion, however, the product has been let down by its design, which I thought was pretty ugly! The purification specifications of the Germ Guardian are almost exactly that of the Core 300, but this purifier comes in more expensive.

+ 3-step filtration
+ Quiet Operation
– Faint blue UV light keeps shining through
– Doesn’t have many smart features

Four Seasons EnvionEnvion by Boneco – Four Seasons FS200

I also looked at similar products, which also have the capability of heating and cooling. This particular model is also a dehumidifier. The higher cost and larger size of such units were not really suitable for my needs. If you’re looking for a wide range of features, then this might be one to look at.

+ Includes a true HEPA filter
+ Multiple functions can be used at the same time
– No remote control
– Comes with just a one year warranty


The Winix HR100 is perfect for a pet owner like me. It cleans all the pet hair and fur hence protect from allergies. Furthermore, its carbon coated filter absorbs gases and every kind of odor and hence makes air pleasant.

The silent mode is fantastic at night time – I haven’t been disturbed a single time while leaving the unit switched on overnight. Interchangeable pre-filters for specific problems mean there is a solution to the most common air quality problems both at home and at work.

A great, affordable product that delivers precisely what it promises.

Winix hr900