Best Air Purifier Under $100

If you’re looking for the best air purifier under $100, we’ve done the research, consulted air quality experts, and delved into the specifications of the top budget air purifiers on the market. We’ve narrowed it down to the best cheap all-around choices among affordable HEPA air purifiers and air purifiers for smoke, to bring you the best cheap air purifier for indoor air quality without breaking the bank.

Our top pick and the best air purifier for under $100, is the Germ Guardian True HEPA purifier, which is independently rated and certified by AHAM to purify the air and remove allergens, mold spores, tobacco smoke, and even viruses in rooms up to 167 sq ft (square feet).

Top 7 Best Air Purifiers Under $100 Compared

 #1  Germ Guardian HEPA Purifier – Top Pick

WHY WE LIKE IT: An affordable HEPA purifier that includes UV-C sterilization and a 3 micron pre-filter to remove allergens. It’s great for anyone wanting to make sure of the best indoor air quality in rooms up to about 160 square feet, or to help get rid of odors and germs in shared living spaces.

Pros
  • AHAM-verified for smoke
  • 3-in-one design with charcoal, HEPA and UV-C
  • 3 year warranty
Cons
  • Taller and bulkier than the Levoit air purifier (our #2 pick)
  • Not the quietest air purifier on our list
  • Must be kept on a smooth surface for adequate cooling

This 3-in-1 air purifier, like many of the top HEPA air purifiers on the market, incorporates a fan with adjustable speeds; a coarse “pre-filter” with charcoal designed to trap larger particles; a HEPA filter to catch dust mites, pollen and dander, and a UV-C lighting element to kill bacteria. The Germ Guardian HEPA filter employs much tested industrial air purification technology to assist in the disinfection. Titanium Dioxide is used for photo catalytic disinfection, helping to eliminate 99.7 percent of airborne bacteria and viruses.

This filter is rated for rooms up to 167 square feet, so it works well in living rooms, large bedrooms and hallways. It’s great for homes with pets since it includes odor reduction as well. Filters last a claimed 6-8 months. That is not bad at all for air purifiers.

 #2  Levoit Air Purifier for Home – Honorable Mention

WHY WE LIKE IT: A compact desktop friendly budget air purifier that reduces odors while filtering out smoke, pollen, pet dander and PM 2.5 pollutants. It’s great for someone looking to remove smoke, cooking odors or allergens from a small space such as an office, den or bedroom.

Pros
  • Removes contaminants equal to 3 µm
  • 3-stage process filtration with activated charcoal
  • Smaller and more compact than the Germ Guardian (our top pick)
Cons
  • Doesn’t filter as large an area as some filters on our list
  • No dedicated sanitization feature
  • Filters need changing more frequently (3 months) than with the Germ Guardian (our top pick)

This desktop air purifier is great for removing smoke, pollen, dust and pet dander from the air in small rooms up to about 87 square feet. It’s energy efficient, too, with an Energy Star certification, like our top pick. This air filter is CARB compliant for California and benefits from a compact, aesthetically pleasing design that incorporates a switchable nightlight. It has three fan speeds and can circulate the air in a typical 87 square foot room about four times per hour.

Unlike the Germ Guardian free-standing air purifier, however, the Levoit desktop air purifier lacks a UV-C sanitization function. Depending on what you want from your air purifier, however, this is either a benefit or a drawback. On the one hand, it doesn’t kill viruses or smaller bacteria (though it does remove a lot of bacteria and mold from the air, since it traps particles as small as .3 microns.) On the other hand, it doesn’t use ozone, which can itself be a lung irritant. Speaking of lung irritants, check out the best air purifier for mold.

 #3  Pluggable Air Purifier and Sanitizer – Best Small

WHY WE LIKE IT: A small and convenient air sanitizer with a built-in UV-C light designed for desktop use. It’s great for those looking for an air purifier for kitchens, litter box areas, or shared office spaces, with a focus on germ and odor reduction.

Pros
  • Effective UV-C sanitizationRemoves musty and old food odors
  • Only 7 “ tall and doesn’t take up too much space
Cons
  • Doesn’t filter out as much air or larger pollutants as our top pick, the Germ Guardian HEPA purifier
  • Requires adequate humidity
  • Bulb has to be changed after 4000 hours

This small pluggable unit is an air purifier roughly the size and shape of a plug-in nightlight or a Febreeze plug in. It uses a UV-C bulb and a photocatalytic process to sterilize the air. This effectively inactivates mold and viruses, kills bacteria and helps break down odors from volatile organic compounds. While it works best in a small, humid and enclosed area, it’s rated to flow just over 450 cubic feet of air per hour. Thus it works well in bathrooms, small kitchens and cat litter areas. It doesn’t generate heat and is in general as pet safe as any other lamp or electric fan.

On the downside, this isn’t intended to scrub smoke and other pollutants from the air or really improve air quality; it’s more of a sanitization and odor removal tool. Also, it needs humidity in order to achieve maximum odor reduction, and may lead to incomplete breakdown of VOCs and excess ozone if used in too dry an area. You can also read about the best air purifier for smoke.

 #4  KOIOS Air Purifier – Best Budget

WHY WE LIKE IT: A budget friendly true HEPA filter purifier with 3 stage air purification, comparable to the top rated air purifiers under $100 like the Germ Guaridan, but at barely half the cost. It’s great for those wanting an ozone-free, highest grade deodorizing air purifier for smoke, allergens, dust and other pollutants at home or at the office.

Pros
  • True HEPA filtration
  • ETL listed energy efficient
  • Activated carbon for odor reduction
Cons
  • Night light can’t be turned off
  • California certification pending
  • Not as quiet as the Levoit (our #2 pick)

One of the most affordable true HEPA air purifiers on the market, this compact 7” tall unit boasts up to a 99.7 percent filtration efficiency and works in small to medium sized rooms to cut down on smoke, pollen, dust mites and PM 2.5 pollutants. It’s energy efficient thanks to a 360-degree inlet, and it uses the typical three stage system consisting of a coarse pre-filter, a true HEPA filter and an activated carbon filter to remove odors from volatile organic compounds.

A bargain choice, it makes a great second or third air purifier for offices, break rooms, kitchens, pet areas and nurseries. It doesn’t use photocatalysis so it releases no ozone or partially oxidized VOCs. However, this bargain unit doesn’t flow as much air as the larger Germ Guardian or Levoit (our #1 and 2 picks, respectively) air purifiers. It also has a built in nightlight that, frustratingly, doesn’t have a separate off-switch. You may also want to read about the best air purifiers for asthma.

 #5  Levoit Vista 200 Air Purifier – Quietest

WHY WE LIKE IT: Ultra quiet 26 db high efficiency purification, using up to 30 percent less electricity than comparable medium sized filters. It’s great for anyone looking to improve indoor air quality in bedrooms, living rooms and other medium sized rooms, with minimal noise low power consumption.

Read Full Review: LEVOIT Vista 200 Review

Pros
  • Ultra quiet 26 db motor
  • Soothing warm nightlight and programmable timer features
  • Suitable for rooms up to 161 square feet
Cons
  • Timer function doesn’t adjust fan speed
  • Lacks a dedicated sterilizer function
  • Moves less air than the Germ Guardian 22”

This air purifier from Levoit is one of the quietest and most energy efficient affordable air purifiers on the market. It emits just 26 db on the fan’s low setting, making it suitable for all night use in bedrooms and hallways. It also uses a claimed .9 W, which is significantly less than the KOIOS air purifier (our #4 pick.) The Levoit Vista 200 also includes a warm night light feature which can be turned on and off independently of the fan. It also includes a programmable timer function, but unfortunately you can’t set the fan speed to high or low with the timer.

A great choice for reducing PM 2.5 pollution and improving air quality, this Levoit model stands out for its quietness and energy efficiency. Plus, it has very effective CTC 100 formula activated carbon for odor reduction. Always look for a best HEPA air purifier.

 #6  MOOKA True HEPA Air Purifier – Budget Pick for California

WHY WE LIKE IT: A budget air purifier that’s CARB and prop 65 certified in California and meets standards for environmental friendliness. It’s great for anyone looking for for a low cost and eco friendly air purifier for their office or home, especially in California.

Pros
  • 99.7 percent HEPA
  • CARB certified
  • Easy to use one-button operation
Cons
  • Moves less air than the Germ Guardian 22”
  • At 35 dB min, it’s not as quiet as the Levoit Vista 200
  • Nightlight lacks a separate turn off button

The MOOKA EPI810 is a budget air purifier for smoke and PM 2.5 pollution that comes certified by the California Air Resources Board and EPA for environmental responsibility. It emits no ozone and uses the tried-and-true three step filtration process, along with free flowing 360-degree air intake, as with the Levoit Vista 200 (our #5 pick.)

However, unlike with the more expensive Levoit, the lighting feature on this MOOKA air purifier isn’t independently controllable. If you don’t like the mild blue glow, you must remove the LED bulbs.  Anyone looking for more outdoor options may also want to consider one of the best outdoor patio heaters. At least this isn’t particularly difficult and the manufacturer even suggests looking for tutorials on Youtube. If you have pets you want the best air purifier for pets.

 #7  PARTU HEPA Filter – Best Fragrance

WHY WE LIKE IT: This innovative air purifier for smoke combines a HEPA filter with a fragrance sponge so you can use it as a diffuser as well. It’s great for someone looking for an air purifier for use in bathrooms or smaller bedrooms and play areas.

Read Full Review: PARTU Hepa Air Purifier

Pros
  • Also essential oil diffuser
  • 3 stage filtration with true HEPA filter
  • Reduces PM 2.5 and smoke pollution
Cons
  • Louder than the MOOKA (our #6 pick)
  • Less airflow than the Vista 200 (our #5 pick)
  • Filters must be replaced every 3-6 months

This PARTU HEPA air purifier comes with some interesting, innovative features that set it apart from the crowd of desktop air purifiers for smoke and indoor air pollution. It may not be the quietest on the market, but it does have an ace up its sleeve in the form of a fragrance sponge that lets the PARTU filter double as an essential oil diffuser. Just add a few drops of your favorite non irritating scent and you can combine dust and pollen reduction with aromatherapy.

It also features a lock function, great for areas where the filter will be in use around kids and pets playing. This prevents, for example, your cats from “accidentally” turning the filter on or off. The heating, cooling and air section is also a great read. Also, air conditioners can help your home’s air.

How We Decided

In order to narrow it down to the best choices among air purifiers under $100 we identified a few different market niches and use cases for these devices, and highlighted the essential specs for each one. Since we’re looking for affordable options, some additional features such as smart device connectivity, customizable filters, air quality indicator lights, and so on will not be available on cheaper air cleaner units.

Among medium sized room air purifiers and desktop air purifiers, we chose only models that came with at least federal EPA certification (California certification is a bonus) and they must filter out particles down to at least 2.5 microns in size; this makes them effective for the widely used PM 2.5 standard of air pollution. This is important since it represents some of the most harmful macroscopic pollution hazards from soot and smoke particles. They also had to be effective against VOC’s, pollen and pet dander and offer some deodorizing capability as well.

For air sanitizers such as the Pluggable Germ Guardian (our #3 pick) on the other hand, we required that they claim at least 99.6 percent sanitization efficiency and that, for photocatalytic sanitizers, a remediation system to limit ozone emissions.

Air Purifiers Under $100 Buyers Guide

The Most Important Features to Consider

  1. Filter Type
    The effectiveness of an indoor air purifier depends on the type of filtration system used. The generally preferred system for affordable air purifiers consists of a true HEPA filter sandwiched between a fine dust trap and an activated carbon filter.
  2. Sanitization method
    Some air filters use UV-C and photocatyalytic activation for additional sanitization and odor reduction. The benefits of this are increased effectiveness against airborne viruses and bacteria, along with reduction of odor from organic sources. Their downside is that they require humidity in order to fully react and not leave intermediaries like ozone and acetaldehyde.
  3. Air Purifiers Under $100 Buyers Guide
    Depending on their size, most of the best affordable air purifiers can move about 50 cfm, enough to cycle the air in a 100 square foot room at least once an hour.

Air Purifier Under $100 FAQs

Are these effective at cleaning up smokey air?

The best air purifiers for the home and office cut down significantly on smoke and PM 2.5 pollution–such as the harmful particles that cause air quality to get so hazardous around wildfires–due to a combination of true HEPA filtration and activated carbon.

How often do you have to change the filters?

Depending on the model and the size of filter, it can range from 3 to about 8 months. For sanitizers such as the Pluggable Germ Guardian, our #3 pick, the UV-C bulb must be changed every 10 months or after 4000 hours of use.

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Ryan Mcbride

Ryan McBride is a writer based in Los Angeles. He has contributed work to magazines and sites including Gayot, Spy, Paper, Ladygunn, 3AM and the Crab Creek Review. He writes consumer reviews, essays, science and tech journalism as well as literary and art criticism.

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