(Last Updated On: October 25, 2021)

Top 5 Small Air Purifiers for Your Bathroom

air filter for pet allergies from dogs

By Bianca Herron

12 min read

When it comes to air purifiers, you may have thought to place the air cleaner in many rooms in your home. However, have you ever thought of putting it in your bathroom? An air purifier would be perfect for helping eliminate bacteria, germs, odors, and mold. At the same time, mold can grow just about anywhere in your home, though the bathroom is the most common.

For mold to grow, it needs moisture, oxygen, and damp and dimly lit areas — many characteristics of a bathroom. Mold may start as a small spot but can grow and spread quickly in 24 hours under the right conditions. According to Disease Control and Prevention centers, molds release tiny spores that can float in the air.

During these times, indoor air quality is more important than ever, especially if you share a home with someone who is high-risk for contracting COVID-19. These times are even more dangerous if you or your loved one gets exposed to mold at home. Some exposure to moldy environments may trigger common symptoms, including sneezing, coughing, runny nose, itchy eyes, and headaches. However, those sensitive to molds can experience severe health effects, including asthma attacks, permanent lung damage, and infections.

Top Pick

Austin Air
Bedroom Machine
Air Purifier
$845 Buy Now

Products in this article are independently selected and featured editorially. If you make a purchase using these links we may earn commission.  How We Rate

An air purifier is an excellent solution to not only eliminate mold but also remove germs, bacteria, odors, and other allergens from your bathroom. There are many factors to consider when choosing the best bathroom odor eliminator. For instance, it would help if you think about the size of your bathroom and choose an air purifier that comes with a HEPA filter that removes up to 99.7 percent of mold, bacteria, dust, and other allergens.

At air purifiers.com, your trusted source for all things air purifiers, we have researched to help you find a small air purifier.

Best
Austin Air
Bedroom Machine
Air Purifier

$765 Buy Now
2nd Best
Alen BreatheSmart
45i with Carbon
Air Purifier

$444 Buy Now
Better
Rabbit Air
BioGS 2.0
Air Purifier

$400 Buy Now
Good
Coway AirMega
AP-1512HHS
Air Purifier

$255 Buy Now
2nd Good
Sharp
Plasmacluster Ion
Air Purifier

$200 Buy Now
Best
Austin Air Bedroom Machine Air Purifier $845 Buy Now

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
Metal body and paint do not off gas and VOCs as Plastic bodied units do
Made in USA

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. With 15 pounds of carbon, this unit will do the job - even if it does so noisily. It's recommended that the filter be changed once every five (5) years under normal conditions, and more often under harsh air conditions.
2nd Best
Alen BreatheSmart 45i Air Purifier $444 Buy Now

Pros

2.4 lbs of carbon
H13 grade of HEPA
Multiple color options: White, Expresso, Graphite, and more
Sleep Score.com certified, proven to produce better sleep
Lifetime warranty
Great value

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.
Better
Rabbit Air BioGS 2.0 Air Purifier $400 Buy Now

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 microns
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
  • Energy Star Rated
  • 625 square feet room coverage
The Rabbit Air BioGS 2.0 air purifier cleans bedrooms up to 625 square feet twice every hour. As an Energy Star-rated air purifier, the Rabbit Air BioGS 2.0 is very quiet. It also comes with a four-stage filtration system, washable pre-filter, and childproof feature, which pauses the air purifier's operation when you remove the front panel. It also comes with a five-year warranty as well as 24/7 lifetime support. 
Good
Coway Airmega 1512HH Air Purifier $224 Buy Now

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

Sharp Plasmacluster Ion

$203 Buy Now

Pros

Low noise operation

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

True HEPA and active carbon filters last up to two years

Cons

One-color option

Features and Specs

  • Dimensions: 8.2 x 15.1 x 21.3 inches
  • Weight:11 pounds
  • Three-stage filtration system
  • True HEPA filter eliminates airborne particles traditional filters cannot trap
  • 259 square feet room coverage

The Sharp Plasmsacluster Ion Air Purifier comes with a high-efficiency HEPA filter and 15 pounds of activated Carbon to eliminate odors and harmful chemicals in the bathroom. The unit’s three-stage filtration system includes a long-life True HEPA filter and Activated Carbon filter, which captures up to 99.97 percent of airborne particles as small as 0.3 microns. With a coverage area of 259 square feet, the Sharp Plasmacluster Ion air purifier is whisper quiet and has a Plasmacluster Express Clean mode, which provides an extra boost of cleanness. Additionally, the Sharp Plasmacluster Ion air purifier comes with a washable pre-filter for larger airborne particles, which helps extend the overall life of your filters.