5 Best Air Purifiers with Activated Carbon Technology

for Your Bedroom

Find the Right Air Purifier for Small Rooms in Your Home

air filter for pet allergies from dogs

By Bianca Herron

12 min read

More than 2,000 years ago, humans used activated carbon to remove impurities from water. Activated carbon acts like a sponge to absorb chemicals, odors, and other volatile organic compounds, or VOCs. Although its exceptional absorption qualities were well-known, it wasn’t until the early 1900s that activated carbon was produced in powder form and sold commercially. During this time, activated carbon was used to purify water and to remove the color from sugar. 

As World War I progressed, activated carbon was being used to clean wartime water and assisted in air purifiers’ manufacturing. Activated carbon became a valuable resource during the war when it was discovered that it could be used in gas masks to protect soldiers. Additionally, granular activated carbon was also developed during this time. 

Today, activated carbon is used in food and beverage processing to remove foul odor and municipal drinking water. According to experts, activated carbon may have some health benefits that help with kidney health, diarrhea, skincare and skin infection, and teeth whitening. Moreover, activated carbon is found in dozens of oral health products and is said to be antibacterial, detoxifying, and more.

Top Pick

Alen BreathSmart 45i with Carbon Air Purifier

Buy on Amazon

The first time many of us encounter activated carbon is when choosing an air purifier. Many of our customers begin their search because of allergies or asthma. With indoor air quality more important than ever, it’s critical to reduce dust in the home to worsen your allergies or asthma and alleviate the chance of respiratory problems due to odors or chemicals.

Best Air Purifier for the Bedroom

2nd Best Air Purifier for the Bedroom

Better Air Purifier for the Bedroom

Good Air Purifier for the Bedroom

2nd Good Air Purifier for the Bedroom

Alen BreatheSmart
45i with Carbon
Air Purifier

$429 Buy on Amazon
Austin Air
Bedroom Machine
Air Purifier

$845 Buy on Amazon
Rabbit Air
BioGS 2.0
Air Purifier

$400 Buy on Amazon
Coway
AirMega HEPA
Air Purifier

$200 Buy on Amazon
Sharp
Plasmacluster Ion
Air Purifier

$230 Buy on Amazon

Best Air Purifier for the Bedroom

Alen BreatheSmart 45i Air Purifier

$382 Buy on Amazon

Pros

True HEPA filter

Laser Smart Sensor

Multiple color options: White, Expresso, Graphite, and more

Cons

Weight

Features and Specs

  • Dimensions: 8.5 x 15 x 25 inches
  • Weight: 21.4 pounds
  • Four-stage filtration system
  • Medical-Grade True HEPA filter and B4-Pure filter
  • 800 square feet room coverage

The Alen BreatheSmart 45i Air Purifier is a sleek and sophisticated air purifier that can clean bedrooms up to 800 square feet in size every 30 minutes. It’s True HEPA filter can remove airborne particles including allergens, dust, orders, pet dander, bacteria, and mold spores. It also comes with a HEPA Silver filter, which helps kill airborne bacteria, germs, viruses, and more.

Additionally, the Alen BreatheSmart 45i’s Laser Smart Sensor can not only detect airborne particles, but also automatically adjusts to your environment. With four fan speed options, its WhisperMax Technology allows you to sleep peacefully. Moreover, its LED color display allows you and your loved ones to check the air quality at a glance.

2nd Best Air Purifier for the Bedroom

Austin Air Bedroom Machine Air Purifier

$844 Buy on Amazon

Pros

Five-year warranty

True Medical-Grade HEPA filter captures 99.97 percent of airborne particles larger than 0.3 microns

Multiple color options: Sandstone, Midnight Blue, and White

Cons

Heavier than other competitor products

Features and Specs

  • Dimensions: 14.5 x 14.5 x 23 inches
  • Weight: 53 pounds
  • Five-stage filtration system
  • Three fan speeds

If you or a loved one suffers from a sleep-related problem, the Austin Air Bedroom Machine Air Purifier is a wise choice. Be confident that you will not only sleep better, but also continuously breathe clean air. Its True medical-grade HEPA filter eliminates up to 99.97 percent of all airborne particles larger than 0.3 microns. This includes dust, pet dander, pollen, gases, and other allergens.

With three speed settings for its fan, the Austin Air Bedroom Machine air purifier boasts a 360-degree intake system and a five-stage filtration system. Additionally, its High Efficiency Gas Arrestance (HEGA) carbon cloth absorbs gases, chemicals, bacteria and other viruses.

Better Air Purifier for the Bedroom

Rabbit Air BioGS 2.0 Air Purifier

$400 Buy on Amazon

Pros

24/7 lifetime technical support

BioGS HEPA filter and Activated Charcoal filter captures 99.97 percent of airborne particles as small as 0.3 micron

Energy Star rated

Cons

One color option: white

Features and Specs

  • Dimensions: 16.6 x 9.8 x 22.2 inches
  • Weight: 16.8 pounds
  • Four-stage filtration system
  • Energy Star Rated
  • 625 square feet room coverage

The Rabbit Air BioGS 2.0 is a quiet air purifier that is designed to remove airborne particles from the air. With its four-stages of filtration, the Rabbit Air BioGS 2.0 cleans bedrooms up to 625 square feet twice every hour. Its pre-filter is washable and its BioGS HEPA and Charcoal-based Activated Carbon filters can last up to three years.

As an Energy Star rated air purifier, the Rabbit Air BioGS 2.0 is very quiet. It also comes with a childproof feature, which pauses operation of the air purifier when the front panel is removed. It also comes with a five-year warranty as well as 24/7 lifetime support.

Good Air Purifier for the Bedroom

Coway Airmega Air Purifier

$224 Buy on Amazon

Pros

Coway IoCare Mobile App

True HEPA filter and Activated Charcoal filter captures 99.97 percent of airborne particles as small as 0.3 micron

Multiple color options: Black, Brown

Cons

Covers up to 325 Sq Ft

Features and Specs

  • Dimensions: 22.5 x 22.2 x 12.4 inches
  • Weight: 19.76 pounds
  • Three-stage filtration system
  • Energy Star Rated
  • 325 square feet room coverage

The Coway Airmega Air Purifier expertly cleans the air in bedrooms up to 325 square feet. This energy-efficient air purifier includes both a True HEPA filter and Activated Charcoal filter, which captures airborne particles including pollen and other allergens. The Coway Airmega also comes with a washable and permanent pre-filter to catch particles larger than0.3 microns.

Its Coway IoCare mobile App allows you to monitor the air quality indoor and outdoor. You can also use the app to control speed, use smart control mode, get filter notifications, and much more. Additionally, the air purifier works with Alexa, comes with a pollution sensor, which shows indoor air quality in real-time, and has three fan speeds as well as an auto mode.

2nd Good Air Purifier for the Bedroom

Sharp Plasmacluster Ion Air Purifier

$180 Buy on Amazon

Pros

Low noise operation

True HEPA filter captures 99.97 percent of airborne particles as small as 0.3 micron

True HEPA and active carbon filters lasts up to two years

Cons

Covers up to 259 Sq Ft

Features and Specs

  • Dimensions: 8.2 x 15.1 x 21.3 inches
  • Weight: 11 pounds
  • Three-stage filtration system
  • Energy Star Rated
  • 259 square feet room coverage

The Sharp Plasmsacluster Ion Air Purifier can protect medium bedrooms up to 259 square feet. This air purifier includes a high-efficiency HEPA filter and 15 pounds of activated carbon to get rid of odors and harmful chemicals expertly. The Sharp Plasmacluster Ion benefits from a three-stage filtration system, which includes a long-life True HEPA filter and activated carbon filter. Both of these filters capture up to 99.97 percent of airborne particles as small as 0.3 microns. This unit also has a washable pre-filter for larger airborne particles, which helps extend the overall life of your filters. Moreover, it boasts a LibraryQuiet operation and a Plasmacluster Express Clean mode, which provides an extra boost of clean.

Activated Carbon

Why Is It Called “Activated?”

What is the difference between carbon and “activated” carbon? The carbon used in air purifiers and water filters is put through a baking process to dry the carbon. The heat during this process drives out impurities and causes the carbon to fracture at a microscopic level. Doing this opens up a large surface area where contaminants are captured. After activated carbon has fully absorbed a large volume of pollutants, heating it again will reactivate it; however, the reactivation process is impractical and dangerous.

Non-activated carbon is soot or charcoal, while activated carbon is described in a variety of ways. It’s general range capabilities include amorphous carbon-based materials that exhibit a high degree of porosity and an extended surface area. This means that it has excellent absorbent characteristics that make it very useful for a wide variety of filtration processes, including air and water.

How Is Activated Carbon Used in Home Air Purifiers?

The best way you can cut down on dust in your home is by purchasing an air purifier with activated carbon. Dust consists of chemicals, smog, ozone, fumes from cooking, pet dander, and tobacco, and more. These contaminants can not only irritate allergenic and asthmatics, but they are also bad for our health.

Fortunately, air purifiers are designed to remove particulates, including pollen or pet dander, effectively. For those who need a comprehensive air purifier solution, higher caliber room air purifiers that offer outstanding particle, odor, and chemical removal are wise choices. Ultimately, many quality air purifier systems provide a comprehensive solution that includes activated carbon to these issues.

Here are a few ways air purifiers with a carbon filter are used in the home:

1. Carbon Can Be Used By Itself
In-room air purifiers, the activated carbon is often combined with other minerals, like zeolite. Zeolite can absorb ions and molecules and thus act as a filter for odor control, toxin removal, and chemical sieve.

2. Carbon Can Be Treated to Target Specific Chemicals
While activated carbon can adsorb hundreds of different chemicals and odors, it cannot remove everything. Carbon is not necessarily excellent at removing some common chemicals such as formaldehyde or hydrogen sulfide. In these situations, the carbon may be impregnated with potassium iodide or blended with active alumina to increase absorption qualities. This means that all of the tiny spaces and crevices within the carbon hold an added chemical that now reacts with and neutralizes the airborne formaldehyde or hydrogen sulfide, rather than the carbon itself removing it.

3. As A Treatment for Multiple Chemical Sensitivity
A small segment of allergy sufferers has what is called Multiple Chemical Sensitivity (MCS). This means that they have a very high sensitivity to any airborne chemicals in the air. Perfumes, cleaning chemicals, and even off-gassing from household building materials can severely irritate someone with MCS. For those who suffer from MCS, an air purifier with a high volume of activated carbon can be used to remove irritants from your home. The air will become much more breathable not only for everyone but especially for those who suffer from dust allergies, asthma, and those with weakened immune systems such as babies, children, and the elderly.