Can Air Purifiers help with Covid-19?

There are numerous airborne viruses in the atmosphere.These viruses get transmitted in the form of tiny droplets called aerosols. The aerosols are released into the air by the action of sneezing, coughing, talking, and even breathing. 

Poor indoor air quality plays a major role in the transmission of certain viruses ; including the coronavirus. The droplets containing the corona virus can linger in the badly ventilated room. 

Proper ventilation does not only keep us safe during pandemics but otherwise also it is vital for our overall well being.

So here in this blog we will discuss if air purifiers actually help against the spread of COVID-19 virus, which air purifiers are effective and we will also suggest some of the best air purifiers to keep disease-causing viruses like COVID-19 at bay.  

Can Air Purifiers actually help with Covid-19?

In this pandemic phase our home is the safest place to be. So the average person generally  doesn’t require an air purifier if they are only living with family members. If anyone in the family is infected with COVID-19 then, air in their room with the door closed proves to be beneficial. 

Hence, air purifiers when used along with other safety measures like proper sanitation, wearing masks can help against the spread of COVID-19 virus. 


Types of air purifiers and their efficiency against COVID-19 Virus

Air purifiers are devices which circulate the air through a set of filters and capture the contaminants like; microscopic particles such as virus, dust, allergens, molds, spores, bacteria, etc, that are floating around.

There are broadly  three types of air purifiers as follows: 

Types of air purifiersEfficiency against COVID-19
Ozone generators: works on a principle that they alter the standard oxygen molecule so that it has three atoms. This three-atom molecule is known as Ozone. Air purifiers with UV light generate Ozone which is a toxic gas

Air purifiers that generate Ozone do not prove to be effective against COVID-19 virus.Instead, inhalation of ozone can cause coughing, throat irritation, shortness of breath and other issues, even in healthy individuals. Ozone can even result in lung damage. It also worsens the condition of people with asthma.
Ionic air purifiers: also release Ozone. The ionic air purifiers work on a principle that the metal electrodes charge the airborne particles and attract them electrostatically. This process is known as corona discharge and  results in the emission of ozone as a byproduct.The ionic air purifiers do not remove the airborne particles from the ambient air. And therefore they are not effective against COVID-19 Virus. Rather these particles just stick onto nearby surfaces and even  our windpipe, alveoli and air sacs of lungs. This aggravation of pollutants can cause certain heart, lung and other respiratory conditions.Ozone released by these air purifiers can aggravate in the indoor air upto critical levels. This can cause certain health impacts like: irritate the lungs, trigger asthma attacks, chest pain, shortness of breath etc.
Air purifiers with HEPA filters HEPA stands for “high-efficiency particulates; are specifically designed to improve indoor air quality by physically removing the airborne particles; such as certain viruses, bacteria dust, pollen and pet dander etc that can be floating around.The fan pushes the infected aerosols away through heating and cooling ducts. Then the air filter captures the infected aerosols and does not allow its recirculation. The filters in hepa air purifiers have an efficiency of 99.98% against particle size as small as 01 micron in diameter.So the air purifiers with HEPA filters are to some extent efficient at removing disease-causing pathogens like; virus including COVID-19 virus, bacteria, dust etc. Therefore If a HEPA filter is run over a period, this can remove some viruses, including COVID-19.

Which are the best air purifiers for viruses?

Some of the best air purifiers for viruses are as follows: 

Air purifiers with HEPA filter Why i recommend it 
Westinghouse 1701 HEPA Air Purifier with Patented Medical Grade NCCO Technology for Home, Eliminates & Kills Bacteria and Viruses, Filters Dust, Pet Dander, Odor, Allergies, Smoke – Ideal for Medium to Large Rooms, Office, Kitchen, BedroomWestinghouse air purifier uses the patented NCCO technology (Nano Confined Catalytic Oxidation) which kills the harmful pollutants by the action of active oxygen. The harmful pollutants are decomposed into harmless compounds such as carbon dioxide and water moleculesThe filter offers a removal efficiency of 99.97% against harmful viruses and bacteria and also removes 99.72% of particulate matter.This air purifier offers a four stage purification process; namely the Pre-filter, Oxygen Generator, True HEPA filter, and the NCCO Reactor.Westinghouse air purifier is a medical grade true HEPA filter with removal efficiency of 99.97 against allergens as small as 0.3 microns. When the filter needs to be replaced the filter indicator provides an alert. The purifier is suitable for large to medium rooms like bedroom, kitchen, office, etc having an area of about 300 sq ft.
RENPHO Air Purifier for Large Room, H13 True HEPA Filter, Auto Mode with AQ Light, Air Purifier for Home Bedroom, Eliminates Mold, Pollen, Dust, Odor, 26dB Quiet Air Filter, Ozone Free Black Renpho air purifiers are 100% ozone and anion free and do not use UV-C light for disinfection. These are high efficiency air purifiers ideal for living rooms, bedrooms, kitchens, bathrooms, basement, dorms, offices, and classrooms etc.The HEPA  filters cleans an area of about  1,440 sq ft in one hour, 720 sq ft in 30 minutes, Comes with Medical grade H13 True HEPA filter & Advanced 4-stage filtration system.Filter efficiency is  99.97% for particles as  small as 0.3 microns.Works wonders against odor, dust, pet dander, smoke.asthmatic, pet allergic, dust mites allergic, coughing, sinusitis, sneezing, chronic allergens, and seasonal allergies etc. Quiet operation of sound levels as low as 26dB during sleep mode. Even all the display lights will be turned off in sleep mode.Comes with a child lock feature for pets and kids. Cost efficient; filter needs replacement only after 6 months.
Instant Air Purifier, Helps remove 99.9% of viruses (COVID-19), bacteria, allergens, smoke; advanced 3-in-1 HEPA-13 filtration with plasma ion technology, Small Room (AP100), CharcoalInstant air purifiers are proven to kill 99.9% of covid-19 virus, bacteria, mold, and other harmful viruses. With its Advanced 3-in-1filtration; HEPA-13, Activated Carbon, Antimicrobial coating and plasma ion technology it removes 99.97% of pollutants like tobacco smoke, pet dander, certain odors and other impurities. Its advanced sensors offer a 24×7 air quality monitoring with auto fan speed adjust feature.It filters the air in an area of 126 sq ft 5x per hour With its whisper quiet night mode it offers lower noise for a sound sleep.The filters last upto 8 month, after that it needs to be replaced. 
Shark HE601 Air Purifier 6 True HEPA Covers up to 1200 Sq. Ft, Captures 99.98% of Particles, dust, allergens, viruses, Smoke, 0.1–0.2 microns, Advanced Odor Lock, Quiet, 6 Fan, WhiteWith its high speed  six micro fan speed it offers an even distribution of airflow. Its Clean Sense IQ monitors  air quality, auto-adjusts power and constantly maintains clean airflow.The filter has an efficiency of 99.98% against particle size upto 0.3 microns. Highly efficient against dust, dander, allergens, smoke, and household odors like cooking, smoking, cleaning products etc.  Ideal for rooms having a dimension of 1,200 square feet. 
Elechomes EPI081 Air Purifier for Home Allergies Pollen Dust Pet Dander Smokers, Upgrade H13 True HEPA Filter with 4-Stage Filtration, Efficient Air Cleaner (99.97%), Odor Eliminators, 100% Ozone Free Comes with a 4-in-1 purification system namely; The pre-filter, ATP-HEPA protective filter, activated carbon filter, and clean-room grade H13 true HEPA filter.ideal  for bedrooms, living rooms, offices etc.Purifies an area of upto 215 sq.ft within an hour Operates at noise levels as low as 23dB to offer you a good night’s sleep Comes with an  advanced noise-reducing and double ball-bearing fan blade to keep noise levels low;  ideal for a peaceful sleep. Energy efficient and cost effective; comes with an affordable replacement filter and costs only $7.5 for 8 hours of usage. 
Miko Air Purifier For Home HEPA Filter Air Cleaner For Pets, Allergies, Smoke Odor Eliminator In Large Room, Bedroom, H13 HEPA Air Filter Removes 99.97% Smoke, Pollen, Dust Cleaner With Sleep ModeMiko air purifier comes with several interesting features  like multiple fan speeds, built-in timer, maximum surface area for air flow, all around suction, replacement filter indicator and essential oil port for aromatherapy. The filter is made of H13 medical grade filter, a preliminary filter, and anti-bacterial filter for super clean filtration and performance.Large filtration components that offers all rounded purificationMiko air purifiers are effective against allergies, dust, pollen, pet dander, smoke, bacteria, viruses, germs, fungi, mold etc. The Oscillating Intake process removes all particles in a tornado motion and  helps maximize efficiency.Comes with an airtight insulation. Erosion protectant  ensures safety and durability.
Molekule Air Large Room Air Purifier with PECO Technology for Smoke, Allergens, Pollutants, Viruses, Bacteria, and Mold, SilverMolekule Air uses Photo Electrochemical Oxidation (PECO) nanotechnology  for the destruction of harmful  viruses, VOCs, allergens, bacteria & mold.Ideal for large rooms up to 600 sq. ft; such as large bedrooms, living rooms & family rooms, offices basements etc.Comes with a touch screen feature and is compatible with iPhone or Android apps.Portable and lightweight
Medify MA-40 Air Purifier with H13 True HEPA Filter | 840 sq ft Coverage | for Smoke, Smokers, Dust, Odors, Pet Dander | Quiet 99.9% Removal to 0.1 Microns | White, 1-PackEfficient against 99.9% particles of size 0.3-0.1  microns, which includes; odors, smoke, pet dander, dust etc. Ideal for large spaces like; homes, apartments, bedrooms, living rooms, offices, schools, universities, classrooms, hospitals, restaurants, and other businesses.Comes with 3 fan speed options and runs at 110 Volts.Produces a sound of 46 dB- 66dB.Comes with an option of child lock, which is great for pets and kids. The life of the filter is almost 3,000 hours which lasts for about 6 months.

Other FAQs about Air Purifiers and Filters that you may be interested in.

Philips 2-in-1 air purifier and humidifier (ac2729/90)

Philips 2-in-1 Air Purifier and Humidifier series

Molecule Air Purifier


So here in this blog we discussed if air purifiers actually help against the spread of COVID-19 virus, which air purifiers are effective and we also suggested some of the best air purifiers to keep disease-causing viruses like COVID-19 at bay.  If you have any queries you can post them below. We will try to resolve all your queries.



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