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6 Best Air Purifier For Classroom In 2022

There are over 130,000 schools in the United States, and the majority of them are experiencing moderate to unhealthy air quality seasonally. A HEPA air purifier for classrooms can be part of the solution to protect students and teachers from harmful air. However, not all things are created equal, and some models simply won't cut it even for school hours use. After weeks of research and comparison, here are the classroom air purifiers that would do well in school.
Certified

2022 Best HEPA Air Purifier For Classroom

BEST BUDGETBEST OVERALLBEST PERFORM-ANCEPERFORMANCE
Winix 5500-2 ReviewHoneywell HPA300 True HEPA Allergen Remover reviewIQAir HealthPro Plus Air Purifier Review
Winix 5500-2 Air PurifierHoneywell HPA300 Air PurifierIQAir HealthPro Plus Air Purifier
Recommended Room Size
360 sq. ft. (33 m2)465 sq. ft. (43 m2)1,098 sq. ft. (102 m2)
CADR
Dust 243 cfm (413 m3/h)
Pollen 246 cfm (418 m3/h)
Smoke 232 cfm (394 m3/h)
Dust 320 cfm (544 m3/h)
Pollen 300 cfm (510 m3/h)
Smoke 300 cfm (510 m3/h)
Dust N/A
Pollen N/A
Smoke N/A
Filtration
4-stage3-stage4-stage
Ratings
4.5out of 54.2out of 54.8out of 5
Amazon Price
$$$$$$$$$$$$$$
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** MSRP (Manufacturer's Suggested Retail Price)/ RSP (Retail selling price) is accurate at the time of posting.
^ Annual filter cost is calculated based on filter price and 12 hours of usage. Pricing could vary depending on air quality, usage frequency, and speed.
` The indicated online price guides as follows: $ = under $50, $$ = $50-100, $$$ = $101-200, $$$$ = 201-300, $$$$$ = $301-400, $$$$$$ = 401-500, $$$$$$$ = over $500.

How Do We Measure?

No matter how big or small your school is, it pays to have an air purifier to protect the students and teachers during this COVID-19 pandemic year. However, there are many confusing terms that may discourage a person from landing the right model. We're to help to give you a helping hand in your buying journey. Here are the main features you need to look for in a classroom air purifier.

  • Room size - We recommended getting an air purifier that can cover at least 900 square footage of room space. The elementary school classroom size in the US is averaging 900 square footage. If account for the social distancing guideline that limits 20 students per teacher, you're looking at 1029 square feet per classroom.
  • Portability - Most powerful air purifiers are big and bulky as they need to fill in a large filtration. For desktop use, you will need a smaller, lightweight air cleaner that can be placed safely on the teacher's desk. Consider getting multiple units for those with limited room space.
  • Easy to use - Choose a model with a simple control so that even first-timers can get the hang of it. Teachers don't have the time to fiddle around a complicated control panel.
  • HEPA filter - There are different grades of HEPA filters in the market. The medical-grade H13 HEPA filter is the best option, followed closely by the True HEPA filter. Avoid HEPA-type filter as it is not certified and has an inferior 99% filtration as particles as small as 2 microns.
  • Reliability and durability - Most schools will stick to the same model for years, even after the students have graduated. So choose an air cleaner that can withstand the test of time. Having a long warranty is a good indication of the model's build quality.
  • Clean Air Delivery Rate (CADR) - The higher the value, the quicker an air purifier can remove the particulates in a room. A classroom air purifier CADR should be above 200 cfm but note that not all manufacturers participate in this test. There are other benchmarks to take into account of.
  • Noise output - An air purifier should be quiet so it will not distract a classroom session. The sweet spot is between 20-50 dB.

1. Winix 5500-2 Air Purifier

Winix 5500-2 Review

The voted best public school air purifiers from our readers. Winix 5500-2 has everything you need from a modern air cleaning device. air purifier. The black housing size at 15 x 23.6 x 8.2 inches with a 15.4 lb total weight. Not the biggest but it will certainly take up some ground space. There's a back handle slot for students or teachers to grab on to. Overall, build quality is top-notch and you're getting wholesome premium features that we will touch on later.

Winix 5500-2 is a well-rounder HEPA air purifier for classrooms at an accessible price tag.

Moving to control, Winix 5500-2 comes with 4 selectable speeds (Low, Medium, High, Turbo) that you can adjust at a click of a button. There is an auto mode that only runs at a higher speed when it detects a large concentration level of dirty particulates. Other supportive features like filter change indicator, remote, and timer are here by default. There is also a color air quality indicator bar that displays the classroom air quality level. Useful but you will barely notice it during class.

Winix PlasmaWave filtration can trap all types of pollutants in a school. The reusable and washable pre-filter traps large particles like chalk dust, lint, book fiber, hair. The True HEPA filter removes 99.97% of airborne irritants down to 0.3 microns like mold, mildew, pollen, and germs. The AOC Carbon filter adsorbs toxic gases e.g. ammonia, radon, VOCs, asbestos, CO, CO2. Unique in Winix, the PlasmaWave technology diffuses Hydroxyls to destroy the molecular structure of chemicals, germs, and odors for the filter to capture.

Winix 5500-2 Classroom Air Purifier Review

An inexpensive yet highly functional air purifier for classroom use. Winix 5500-2 side air inlets and top air outlet distribute 226 cfm airflow supported by a 360 square footage coverage. CADR is at a similar pace with 243 cfm for dust, 246 cfm for pollen, and 232 cfm for smoke. Suitable for a small to medium size classroom.

Another strong suit of Winix 5500-2 is the subtle noise level between 26.6 to 60+ decibels. With auto mode, you can let it run silently in the background without it disturbing teacher teaching or students studying. Energy usage is between 5-90 watts per hour.

There are not many drawbacks that we can think of other than the slightly high annual filter replacement cost. The size might be an issue for smaller classrooms but even that is still manageable. This is truly a well-rounded HEPA air purifier. Just don't lose the remote control as you'll regret it at a later stage.

In short: Winix 5500-2 is a well-rounder HEPA air purifier for classrooms at an accessible price tag. Excellent in maintaining indoor air quality.

Build Quality

Features

Coverage

Particle Filtration

Smoke Filtration

Price

Filter Cost

4.5

OUT OF 5

online price (US)** Sales Tag
±249.99 $$$/ 7

(annual filter cost ±80)

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2. Honeywell HPA300 Air Purifier

Honeywell HPA300 True HEPA Allergen Remover review

Need a no-frills air purifier that can provide top-tier air cleaning, look no further than Honeywell HPA300 allergen remover. It has a remarkable HEPA filtration that is essential for classroom use, especially during this pandemic period. The 20.8 x 22.4 x 10.8 inches dimension and 17 pounds weight fits well in a school without occupying much space. Design is highly functional with solid build quality that guarantees no ozone or off-gassing. The 5 years warranty is the perfect icing on the cake.

A great, inexpensive HEPA air purifier for classroom that focuses on filtration performance instead of features.

For classroom use, you want something that can run 24x7 without complicated controls to worry about. Honeywell HPA300 air purifier will provide you just that and a hassle-free experience. There are 4 cleaning modes: Allergen, General Clean, Germ, and Turbo, a pre-set timer, a light dimmer, and 2 electronic filter change reminders. Most teachers will just leave it in general clean mode and leave it untouched for months until there is a need to change the filter.

Honeywell HPA300 air purifier 300+ cfm CADR and wide 465 square footage can cover a lot of room space. Ideal for a science lab, mini hall, gym room, library, study room, computer lab and so much more. Noise and power consumption is at a low level as long as you kept it at general mode. The silent operation will not distract the teacher's teaching or students' concentration.

Honeywell HPA300 Classroom Air Purifier review

As the allergen remover title implied, Honeywell HPA300 uses 100% mechanical filtration to clean indoor air. Particulates like dust, smoke, and odor will be drawn in and filtered by a carbon pre-filter. With no large particles passing through, the True HEPA filter removes 99.97% microscopic particles as small as 0.3 microns e.g. dust mite, mold, mildew, and pollen. Any incoming pollutants will be removed by HPA300 as long as the air purifier is kept running.

Despite the low price and high airflow output, there are still some downsides that mainly revolved around the recurring cost. You are required to pay around 100+ dollars annually in order to maintain the filter set. Not every school is down with that especially those that run the machine continuously. The lack of convenient features like auto mode, sleep mode, air quality indicator can be a setback for some people as well. So set your mind on the annual cost before attempting to purchase one.

In short: A great, inexpensive HEPA air purifier for classroom that focuses on filtration performance instead of features.

Build Quality

Features

Coverage

Particle Filtration

Smoke Filtration

Price

Filter Cost

4.2

OUT OF 5

online price (US)** Sales Tag
±249.99 $$$$/ 7

(annual filter cost ±108)

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3. IQAir HealthPro Plus Air Purifier

IQAir HealthPro Plus Air Purifier Review

For international schools with no lack of funds, this is the best HEPA air purifier for classroom by miles. IQAir HealthPro Plys house the best filtration the world has to offer. As a result, the bulky 15 inches width, 28 inches height, and 16 inches depth are needed to support the multi-stage filters. The 35.3 pounds weight can be an issue for transporting, even though 4 perfectly durable caster wheels are there. On the whole, build quality is top-grade with tough ABS materials that will not release harmful byproducts even on a hot summer day. This is a Swiss made air purifier after all.

The best HEPA air purifier for a classroom but not necessarily the model that everyone needs.

IQAir HealthPro Plus air purifier operates with relative ease thanks to its dedicated buttons and monotone digital display. You can adjust the 6 fan speeds and set the right balance between performance and noise in a classroom. There is also an intelligent filter life monitor that will accurately alert you to replace the filter and a programmable timer with day, speed, and time setup. Last but not least, remote control is bundled with the machine.

A school should be a safe haven for children free from all kinds of airborne allergens. IQAir HealthPro Plus air purifier certified performance delivers 41-300 cfm strong airflow delivery rate. The wide 1098 square footage is more than sufficient to cover any room size including science faculty, library, jointed classroom, presentation hall. and computer lab. Noise level is not an issue with the built-in sound deflector EvenFlow Diffuser, curved centrifugal fan, and double-walled housing. Anticipate a low noise between 25-59 dB depending on the operating speed. Energy usage can be high at 27 watts to a max 215 watts per hour therefore the advanced scheduler can play a big role here.

IQAir HealthPro Plus Classroom Air Purifier Review

IQAir HealthPro Plus 3D UltraSeal triple-seal technology pulls in pollutants from a 360-degree for the PreMax Filter F8 to capture. With large, dusty particles filtered and blocked from damaging the HEPA filter, the HyperHEPA filter trap microscopic allergens as small as 0.003 microns; 100 times more capable than a true HEPA filter. This includes allergens that can't be seen by the naked eyes like viral bacteria and viruses. The V5-Cell Granular activated Carbon filter with Pelletized chemisorption filter will be in charge of removing chemical fumes, ozone, and odors. This includes common pollution sources from a school built before the 1970s e.g. ammonia, radon, VOCs, asbestos, CO, and CO2. The entire air filtration is done mechanically and is 100% ozone-free as certified by IAACM.

Let's talk about the biggest stumbling block with IQAir HealthPro: the cost. Not many schools can afford an 899+ dollars machine especially when they have multiple classrooms to fulfill. The filter replacement cost will also stack up quickly and eat up your annual school budget. Another concerning point is the heavy body can be a risk for nosey students that accidentally pushed the machine and topple on them. Lastly, features are a bit bare but not a big deal for school use.

In short: The best HEPA air purifier for a classroom but not necessarily the model that everyone needs. Only consider this when you have the funds and want the absolute best.

Build Quality

Features

Coverage

Particle Filtration

Smoke Filtration

Price

Filter Cost

4.8

OUT OF 5

online price (US)** Sales Tag
±899.00 $$$$$$$/ 7

(annual filter cost ±152)

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4. Medify Air MA-40 Air Purifier

Medify Air MA-40 Air Purifier Review

Protect your student from bad air from wildfire and haze. Medify MA-40 is a Florida-based HEPA air purifier that every school should have one. The modern design is well interpreted that you can tell it optimized airflow efficiency without sacrificing usability and outlook. At a height of just 22 inches, the 15.6-pound total weight is not the lightest but still movable when needed to. Place it near the teacher's desk or chalkboard for maximum and let it work its magic.

A proven, medical-grade air purifier without the exuberance price tag.

Medify MA-40 tempered glass panel adds elegance to its simplistic control. You can adjust the 3 fan speeds, set a timer, and reset the filter replacement indicator tracking. The best feature of all is the child lock that locks the setting from meddling students. Build quality is great with no sign of misalignment, off-gassing, or loose panel. The lifetime warranty is very well appreciated for classroom use as there is bound to be some issue along the way.

Noise level is not Medify MA-40 strong suit. It is at a rather steep 46 dBA "sleep mode" while noise could go as high as 66 dBA. You could still use it in the bedroom to remove dust as long as it is placed further away from the bedroom. Being an Energy Star Rated model, power usage is only at 54 watts per hour. You can efficiently and effectively leave it running 24x7 to capture dust.

Reduce absenteeism in school with Medify MA-40 air purifier. The 840 square footage range every 30 minutes is ideal for all types of classrooms including a science lab, computer room, library, and hall. CADR is tested according to AHAM standard at a high 330 cubic feet per minute (cfm). Given the strong airflow distribution, there is definitely some whirring fan noise which can be distracting for some classes or during exams. Keep it at low noise to maintain the output at 46 dBA rather than the max 66 dBA noise. As an Energy Star certified model, the power usage is 54 wattages per hour. Around 40% more energy efficient than similar rank models.

Medify Air MA-40 Classroom Air Purifier Review

Double the filters, double the performance. Medify MA-40 uses a dual intake pre-filter that traps large dust particles from passing through. The protected H13 HEPA filter capture 99.9% of irritants as small as 0.1 microns including airborne germs and virus carrier allergens. The carbon filter with carbon pellets absorbs harmful toxins from the building like VOCs, asbestos, radon, formaldehyde, and benzene. There is also an optional ionizer that diffuses charge negative ions to attract, latch, and pull down on contaminants in the air. You will experience an instantaneous improvement in the air quality when outdoor pollution is very bad.

3 things you need to be aware of before putting your money on Medify MA-40 air purifier. First, filter cost is on the higher side considering the filter has to be replaced every 2,500 hours. There will be white noise generated when you are running at a higher speed which can be a deal-breaker for some. The lack of a particle sensor for auto mode is a surprise but plays almost no part for classroom use.

In short: A proven, medical-grade air purifier without the exuberance price tag. Will protect students from airborne allergens as long as the filter is replaced on time.

Build Quality

Features

Coverage

Particle Filtration

Smoke Filtration

Price

Filter Cost

4.5

OUT OF 5

online price (US)** Sales Tag
±349.00 $$$$/ 7

(annual filter cost ±60-120)

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5. Coway Airmega 400S Air Purifier

Coway Airmega 400S Air Purifier Review

A good air purifier can reduce the number of airborne viruses and students contracting it. Coway Airmega 400S can be the one with its outstanding track record. The sleek and clean exterior is measuring at a 13.6 inches diameter with 21 inches in height. Not the biggest but certainly heavy at 21.4 pounds. Besides the trendy ventilation design, you'll also find a circle air quality indicator that displays how healthy is the classroom air. Overall, a very well-built machine couple with a long 5 years warranty that solidifies its reliability.

Premium HEPA air purifier with strong airflow and wide air cleaning coverage.

Practicality is excellent with Airmega 400S air purifier even though some of the features you will rarely touch. You'll have 3 selectable fan speeds and 1, 4, 8 hours timer as standard. On top of that, there are also sleep mode and an auto mode that activates at a higher fan speed automatically when a large concentration level of pollutants is detected. Supporting features include a light button that dims indicator light and a separate Pre-filter/ MAX2 filter lifetime indicator. Useful but not applicable for classroom use.

Germs, bacteria, and viruses will multiply and spread airborne. That's why Coway Airmega 1,560 square footage coverages come in handy in dealing with the neverending pollutants. When the air quality is really bad in a classroom, you can increase it to 4 air changes per hour with a reduced 780 square footage range. AHAM CADR is officially tested with a superb 350 cfm air cleaning output. It can swiftly capture the airborne allergens before students or teachers catch the viruses. Noise level is quiet on the most part with an output of 22-52 decibels depending on the fan speed. Coway Airmega 300 also complies with the Energy Star efficiency test with 6-57 watts of power consumption.

Coway Airmega 400S Classroom Air Purifier Review

Runs purely on HEPA filtration with no harmful ozone byproducts, indoor air is pulled in through both sides of the air inlet. The dual pre-filter will block large particles like dust, hair, chalk particles from passing through and prevent damages to the HEPA filter. The Green True HEPA filter capture 99.97% of microscopic particles down to 0.3 microns including seasonal mold and mildew when room humidity increased. The activated carbon filter focus on neutralizing smoke, chemical, and musty odor (if there is any).

The main setback why Coway Airmega 400S is not the most variable option here is the cost. Even after an online discount, there are cheaper alternatives for schools with limited budgets. You will also need to account for the MAX2 filter replacement that will cost up to 130 dollars annually multiply the number of units the school has. The performance will dip if you do not replace the filter on time.

In short: Premium HEPA air purifier with strong airflow and wide air cleaning coverage. Cost is the only factor that could determine its long-term usability.

Build Quality

Features

Coverage

Particle Filtration

Smoke Filtration

Price

Filter Cost

4.5

OUT OF 5

online price (US)** Sales Tag
±749.00 $$$$$$$/ 7

(annual filter cost ±130)

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6. Alen BreatheSmart Classic Air Purifier

Alen BreatheSmart HEPA Air Purifier Review

Alen BreatheSmart air purifier has been used in many classrooms for years. It offers a great air cleaning capacity that reduces the risk of students contracting a viral infection. The 17.8 x 26.8 x 10 inches dimension and 21 pounds weight is not overly large that you will have a hard time finding a place for it. It also comes with fancy addon panel designs that you can skip for classroom use.

The perfect air cleaning machine to protect the student from unhealthy air due to haze or wildfire.

Alen BreatheSmart is easy to use that even a new substitute teacher can make adjustments without an instructional manual. You can choose between the 4 fan speeds or use auto mode for optimal performance. Timers are also present along with a child lock that prevents students from meddling with the setting. Other features include an air quality indicator display, an optional ionizer, and an advanced smart filter that checks the filter usage life. The assuring lifetime warranty will come in handy when there is a need for part replacement.

With an airflow delivery rate of 150 to 286 cfm, Alen can cover up to 1,100 square footage of air cleaning under 1-2 hours. Best used in a large classroom, assembly hall, library, cafeteria, or science lab. CADR is averaging at 300 cubic feet per minute. Noise level is not affected by the strong output at 22 decibels to a consistent white noise 52 decibels. As long as you kept the speed away from turbo mode, it will not distract the student from studying or the teacher from preaching.

Alen BreatheSmart Classroom Air Purifier review

No PM2.5 will be able to escape Alen BreatheSmart air purifier filtration. The washable pre-filter traps school dust and other large particles while prolongs the HEPA filter life. The True-HEPA filter captures small particles and pathogens like mold, mildew, and germs. For stubborn allergens, you have an ionizer that diffuses negative ions to attract and pull down contaminants in the air. For smoke and odor filtration, you will need to upgrade to the HEPA-Pure filter to either HEPA-Silver filter, HEPA-FreshPlus filter, or HEPA-OdorCell filter.

Like all the previous models, Alen BreatheSmart top-tier filtration is reflected in its selling price. You're looking at 600+ dollars excluding any filter upgrade (a must-have). Only private schools can afford such luxury so do consider the other cheaper alternatives. The only silver lining is the filter replacement cost can be low if the classroom air quality maintains regularly at a moderate level.

In short: The perfect air cleaning machine to protect the student from unhealthy air due to haze or wildfire. Once you get over the high selling price, you will reap the reward for years to come.

Build Quality

Features

Coverage

Particle Filtration

Smoke Filtration

Price

Filter Cost

4.5

OUT OF 5

online price (US)** Sales Tag
±649.00 $$$$$$$/ 7

(annual filter cost ±46-138)

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Max Fernandez

A loving father and a dedicated reviewer for airfuji.com with more than 1000 air purifiers under his belt. Max Fernandez is also one of the million patients currently suffering from asthma. Feel free to nudge him if you have any questions.

 

Clean air is vital to the development of children. Here are few other types of air cleaners that also be part of the solution in cleaning the classroom.

  • HEPA air purifier - Mechanical filtration consists of a pre-filter, a True HEPA filter, and an activated carbon filter. Captures all types of particles without releasing harmful byproducts.
  • Air ionizer - Create a static field to discharge negative ions into the air. The negative ions will attract and pull down airborne pollutants for either filter to capture or leave them all over the room. You will need to vacuum to remove the contaminants.
  • Electrostatic precipitator - A standalone unit that induces electrostatic charges to pull down airborne particles. The collector plate inside the chamber pulls in the fallen particles for capturing.
  • UVGI - Emits UV-C rays to sterilize microorganisms and prevent them from developing. Very effective against germs, mold, and bacteria.
  • PCO air purifier - Photocatalytic and oxidization technology that sterilizes and accelerates contaminants' natural decomposition using ultraviolet light.
  • Ozone generator - Never get an ozone generator in the classroom. It releases toxic gases harmful to students' and teachers' lungs instead of cleaning the air. Ozone generators are not recommended by EPA, CARB, and AHAM.
How Can We Purify Air In The Classroom

How Can We Purify Air In The Classroom?

Poor indoor air quality (IAQ) in school can lead to allergic reactions like fatigue, headaches, lack of concentration, absenteeism, and illness. To ensure the safety of teachers and students, here are a few ways you can reduce airborne pollutants in a school classroom.

  • Upgrade and maintain the school ventilation system. Make sure there is no mold and germs growing in the duct.
  • A HEPA air purifier can clean the air and keep schools safe from airborne viruses. It is proven effective in containing allergens, neutralizing chemicals, and preventing an asthma attack. With school reopening from the lockdown, air purifiers are needed in a classroom more than ever.
  • Use only low-toxicity building materials such as school supplies, paints so students and teachers would not breathe into the harmful byproducts.
  • If outdoor air quality is good, keep windows open to let fresh air in.
  • Avoid using an air freshener or deodorizer that emits harmful chemicals to mask odor rather than removing it.
  • Avoid keeping food in the classroom to minimize pest problems.
  • Clean and remove classroom clutter so it will not stir back into the air when disturbed. Sanitize according to the State Department of Health guidelines.
  • Attend Parent Teacher Association (PTA) to identify, highlight, and discuss any school air quality issue.
  • Add weatherstripping on windows and door seals to prevent clean air from leaking and dirty air from coming in.
  • Grow air purifying plants like Peace lily, snake plant, spider plant, sword fern, aloe vera, english ivy, or golden pothos for toxins removal.
  • If budgets permits, replace chalkboards with whiteboards.

Will An Air Purifier Help With Covid In A Classroom?

Yes, it will, but only to a certain extent. A HEPA air purifier or HVAC system will be able to filter the air in the classroom from airborne bacteria and viruses, including COVID-19. Most portable air purifiers can cover 300 sq. ft. of space with up to 300 cfm (510 m3/h) at 4 air changes per hour.

Are Classroom Air Purifiers Safe

Are Classroom Air Purifiers Safe?

Classroom air purifiers are safe as long as it is not an ozone generator. You should only pick an air purifier that uses HEPA filtration to clean the air without producing ozone byproducts. The best way to do so is to visit the CARB website, which certifies which model is safe for classroom use.

How Much Energy Does A Classroom Air Purifier Use?

Depending on the model, most classroom air purifiers use 30-45 watts of electricity or $6-8 in monthly cost to accommodate the large room size. It is very energy-efficient that you will barely see a difference in the utility bill, unlike an air conditioner.

Is It OK To Leave Classroom Air Purifiers On All Night (After School)?

Yes, it is OK to leave a HEPA air purifier for the classroom on all night, even though no one is in the school. It will constantly remove airborne pollutants and guarantee clean, fresh air when students return to school in the morning. Don't worry too much about the energy cost, as air purifiers are energy-efficient and designed for all-day operation. Just maintain and change the filter accordingly to ensure no obstruction on the airflow.

How To Use A Classroom Air Purifier Effectively?

An air purifier requires constant love and care. To get the best out of an air purifier for classroom use, here are some tips that you should know.

  • The correct placement - The closer the air purifier is to the source of the pollutants, the more effective it is. Leave 2-4 feet of space between the wall and air purifier rather than place it by the corner to avoid airflow disruption. Avoid leaving it under the window or in direct sunlight.
  • Do not turn off the air purifier - An air purifier should be running 24x7, even if there is nobody in the classroom. Doing so prevents pollutants like dust from building up and are at risk of inhaling by the student when they return to school.
  • Keep all windows and doors closed - While it is easier said than done for the classroom, this tiny little step can prevent purified air from escaping and dirty air from coming in. Doing so will also help extend the filter life of the air purifier.
  • Always replace the filter on time - A common mistake that most school teachers ignore. Failing to replace the filter within the given time frame when the indicator light is on can significantly reduce the air purifier performance. The classroom air purifier may fail to function properly as the filter is clogged with dirt particles.

How Long Do Classroom Air Purifiers Last?

It depends on the model. Most air purifiers used in the classroom will last 5-10 years, with some brands like Alen that can even last for a lifetime. The air filters like HEPA and carbon filters will last 6-12 months, depending on the school's air quality. The better the air cleaner is maintained, the longer-lasting the air purifier will be.

Pros And Cons Of Classroom Air Purifiers

The Pros And Cons Of Classroom Air Purifiers

There are more advantages than disadvantages to getting an air purifier for classroom use. That's a fact. If you still need some convincing to get one, here are the pros and cons of a school air purifier.

Pros

  • Eliminate airborne bacteria and viruses - The best protection for students and teachers. Classroom air purifiers are excellent at curbing the spread of viral infections. You will see a drop in student absences rate.
  • Healthy indoor air quality - Classroom air purifiers are excellent at maintaining good air quality, particularly during haze or pollen season.
  • Silent operation - Unlike a fan, classroom air purifiers will run quietly in the background, so it will not distract students from concentrating.
  • No ozone emission - Classroom air purifiers are CARB certified ozone-safe. It will not release harmful ozone byproducts.
  • Hassle operation - Just set it and forget it. Air purifiers will work straight out of the box. The only thing you need to do is replace the filter on time.
  • Low power consumption - Air cleaners use very little energy compared to air conditioners. You can leave it on all day, even after school days.

Cons

  • Expensive - You're looking at a few hundred dollars minimum. A classroom requires a high-performance air purifier, given the large room size. The more powerful the unit, the better suited it will be.
  • Recurring filter cost - All Classroom air purifiers comprises HEPA and carbon filter that needs replacing. There's no skipping on this.

Compare Best HEPA Air Purifier For Classroom

NoImageAir PurifierOnline Price (Amazon)ScoreFiltrationCoverageFan
Speed
DimensionWeightDust CADRPollen CADRSmoke CADRPre-filterHEPA filterCarbon filterIonizerUV lightOther filterAll-in-one filterNoise levelPower outputTimer/ SchedulerSensorsWarrantyAuto modeRemote controlChild lockENERGY STARWi-Fi/ BTBluetoothAQIFilter indicator
1Winix 5500-2 ReviewWinix 5500-2 Air Purifier

$$$

CHECK PRICE
4.54-stage360 sq. ft. (33 m2)4
15 x 23.6 x 8.2 in
(38.1 x 59.9 x 20.8 cm)
15.4 lb (7 kg)243 cfm (413 m3/h)246 cfm (418 m3/h)232 cfm (394 m3/h)
Pre-filter
Permanent
True HEPA filter
1 year
AOC Advanced Granular Carbon Filter
1 year
PlasmaWave Technology
-
-
Filter H 116130
1 year
+- 79.99
26.6-60+ dB5 - 90 W1, 4, 8 hoursVOC sensors (Air quality)2 years
2Honeywell HPA300 True HEPA Allergen Remover reviewHoneywell HPA300 Air Purifier

$$$$

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4.23-stage465 sq. ft. (43 m2)4
20.8 x 22.4 x 10.8 in
(52.8 x 56.9 x 27.4 cm)
17 lb (7.7 kg)320 cfm (544 m3/h)300 cfm (510 m3/h)300 cfm (510 m3/h)
HRF-AP1 Filter A Universal Carbon Pre-filter (1 pack)
3 months
+- 11.95
HRF-R3 Honeywell Filter R True HEPA (3 pack)
1 year
+- 59.95
-
-
-
-
max 63 dB2, 4, 8 hours5 years
3IQAir HealthPro Plus Air Purifier ReviewIQAir HealthPro Plus Air Purifier

$$$$$$$

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4.84-stage1,098 sq. ft. (102 m2)6
15 x 28 x 16 in
(38.1 x 71.1 x 40.6 cm)
35.3 lb (16 kg)N/AN/AN/A
PreMax Filter F8 (S)
18 months
+- 79
HyperHEPA Filter H12/13 (L)
4 years
+- 199
V5-Cell Gas & Odor Filter MG
2 years
+- 100
-
-
-
25 - 59 dB27-135 WSchedule (Time x Day x Speed)3 years
4Medify Air MA-40 Air Purifier ReviewMedify Air MA-40 Air Purifier

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CHECK PRICE
4.54-stage840 sq. ft. (78 m2)3
9.9 x 22 x 10.9 in
(25.1 x 55.9 x 27.7 cm)
15.6 lb (7.1 kg)223 cfm (380 m3/h)223 cfm (380 m3/h)223 cfm (380 m3/h)
2x Pre-filter
6 months
2x H13 True HEPA filter
6 months
2x Activated Carbon composite filter
6 months
Ionizer
-
-
Medify MA-40 Replacement Filter (ME-40)
6 months
+- 59.99
46-66 dBA54 W1, 2, 4, 8 hoursLifetime
5Coway Airmega 400S Air Purifier ReviewCoway Airmega 400S Air Purifier

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CHECK PRICE
4.54-stage1,560 sq. ft. (145 m2)3
14.8 x 22.8 x 14.8 in
(37.6 x 57.9 x 37.6 cm)
24.7 lb (11.2 kg)350 cfm (595 m3/h)350 cfm (595 m3/h)350 cfm (595 m3/h)
Pre-filter (2 pack)
Permanent
+- 25
Max2 (Green True HEPA filter)
1 year
Max2 (Activated carbon filter)
1 year
-
-
Max2 Filter
1 year
+- 129.99
22 - 52 dB6 - 66 W1, 2, 4, 8 hours (App), SchedulerPollution sensor, Light sensor5 years
6Alen BreatheSmart HEPA Air Purifier ReviewAlen BreatheSmart Classic Air Purifier

$$$$$$$

CHECK PRICE
4.53-stage1,100 sq. ft. (102 m2)4
17.8 x 26.8 x 10 in
(45.2 x 68.1 x 25.4 cm)
21 lb (9.5 kg)300 cfm (510 m3/h)300 cfm (510 m3/h)300 cfm (510 m3/h)
Washable Pre-filter (with HEPA filter)
6 - 18 months
HEPA-Pure Filter BF35
6 - 18 months
+- 69
-
Ionizer
-
-
-
42-56 dB64 - 105 W4, 8, 12 hoursSmartSensorLifetime Limited Warranty