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SilverOnyx Air Purifier

SilverOnyx Air Purifier Review

Don’t judge the SilverOnyx Air Purifier by its size. Though compact and light, it’s powerful enough for large rooms of up to 500 square feet.

It uses five levels of filtration, including UV-C and an ion generator, to remove a wide range of pollutants and allergens.

It can filter out dust, pollen, mold, pet dander, smoke, and odors.

Bacteria and germs aren’t spared either. The UV-C light sanitizer targets airborne microbes to ensure your indoor air is completely safe.

The air purifier has an air quality sensor it uses to set the fan speed automatically (when in auto mode). You can also keep track of your indoor air quality using the light indicator.

For its performance and features, the SilverOnyx is surprisingly affordable. It’s an excellent choice for anyone looking for a large room air purifier that’s not too expensive.

Design-wise, it looks like a coffee grinder. It’s not the most stylish of looks, but it blends into the room better than the more common boxy air purifiers.


  • Good for large rooms
  • High-performance 5-stage filtration that includes a UV-C sanitizer to kill germs
  • Includes an ion generator to enhance air purification
  • Auto mode
  • Air quality indicator
  • Includes timer and sleep mode
  • 5 fan speed settings


  • Loud when on the higher fan speed settings.

Best Features

Silver Onyx purifier

1. 5-Stage Filtration 

Here are the five stages air goes through once it enters the air purifier.

Mesh preliminary filter: This pre-filter traps large particles like dust and pet hair.

True HEPA air filter: Traps smaller allergens like mold, smoke and pollen.

Activated carbon filter: Eliminates household odors from cooking, mustiness or pets.

UV light sanitizer: Targets airborne microbes to make indoor air safer.

Negative ion generator: Releases negative ions to enhance air purification and freshen up the air.

The 5-stage filtration makes the SilverOnyx one of the best air purifiers for mold and other troublesome allergens like smoke, dust and pollen.

It’s also great for those who are sensitive to odors and families living areas that experience frequent wildfires.

2. Great for Large Rooms 

SilverOnyx purifier

The air purifier’s compact design belies its powerful coverage. It easily covers areas as large as 500 square feet.

Whether you need an air purifier for your mid-size bedroom or a large open basement, the SilverOnyx is up for the job.

3. 5 Fan Speeds Plus Auto Mode 

Most air purifiers have only three fan speeds. The SilverOnyx has five.

This gives you more flexibility to select the perfect setting for the room size and air quality.

If for instance the air gets polluted by dust or litter smell, you can turn up the speed to the highest level to clear up the air quickly.

You just have to withstand the loud noise for a few minutes.

For everyday use, quieter level 3 works great to keep the air clean.

If you are not sure which fan speed setting is best, just select auto mode.

In this mode, the system will use the integrated air quality sensor to determine the air quality and automatically set the right fan speed.

It will kick up the speed when the air gets dirtier and quiet down when it’s cleaner.

3. Air Quality Indicator 

Silver Onyx

The air purifier doesn’t keep the air quality readings to itself.

You can also track your indoor air quality via the air quality indicator, which is a light that turns red when the air quality is bad and blue when it’s good.

4. Timer and Sleep Mode 

A handy sleep mode dims the indicator lights and quiets down the fan (but reducing speed)to help you fall asleep without any distractions.

 If you don’t want to leave the air purifier on all night, use the timer to set it to turn off automatically after some time.


Silver Onyx Air purifier

The main issue with this air purifier is one we have encountered with many other air purifiers – it gets noisy if you set it on the highest fan speed.

Luckily, you don’t have to use the highest setting often – only for times when the air gets really dirty. And even then, it’s just for a few minutes.


Dimensions: 8.4” X 8.4” X 13.1”

Weight: 4 lbs

Coverage: 500 square feet

Number of filters: 3 plus a UV light sanitizer and negative ion generator

Ionizer: yes

Filter life indicator: yes

Auto mode: yes

Fan speeds: 5

Air quality indicator: yes



If you want a large room air purifier that can easily fit on the table or shelf, the SilverOnyx air purifier is a great choice.

It provides powerful air purification performance with a conveniently compact and lightweight design.

About the Author Tom Hanson

I’ve worked as an HVAC tech in Phoenix, AZ for the past 10 years. I created to help home owners select the right portable air conditioner, cooler or air purifier for their needs & budget in just a few minutes.

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