Are Air Purifiers Reliable?

Do you know that the air quality inside a building can be worse than the air outside? Airborne contaminants can be found inside your house. Indications that your house may be extremely polluted include you frequently having headaches, runny nose or cough.

Just like many homeowners, you want to make your home a more comfortable, safe place. That said, there is a device that can effectively clean the indoor air you breathe: HEPA air purifier

But do these devices function as they claim? Read on to find out. 

What Is an Air Purifier

An air purifier is an appliance that improves indoor air quality by removing pollutants from the air in a space. These appliances are hailed as beneficial if you or your loved ones suffer from allergies or asthma and other respiratory ailments.

How Do Air Purifiers Work?

Built with a fan and a filter, air purifiers work by pulling in airborne particles and circulating clean air back into space. The airborne particles are the unwanted particles in the form of dust, pollen, smoke, pet dander, mould spores and harmful chemicals roaming around the space in your home.

Air purifiers are filtering and cleaning devices. Precleaning happens when the filter traps impure air leaving behind harmful pathogens inside. These pathogens eventually die through filtering whilst the fan helps in moving the clean air back.

Without the filter, air purifiers can’t serve their purpose. That’s why filter replacement is crucial to the efficiency of the air purifying device. With that, it depends on how often filters need to be changed and how much indoor air pollution has to be purified. Thus, it will be helpful to understand the types of air purifiers and their specific uses.

Types of Air Purifiers

Understanding different air purifier types will help you make an informed decision for your needs.

HEPA Purifiers

High-efficiency particulate air, or HEPA, is a filtration standard used to remove tiny particles. HEPA filters can remove 99.97% of particles with a diameter of 0.3 m to meet HEPA standards. 


With no toxic byproducts, HEPA air purifiers are particularly efficient against particle pollution. Their filters are enhanced and can trap more particles effectively. 

The ability to combine the filtration technology of HEPA air purifiers with different purifying methods is another advantage of these devices. A UV prefilter, for instance, is a feature that certain HEPA purifiers have. It destroys germs that the HEPA filter removes.

UV purifiers

The sun’s ultraviolet radiation puts you at risk of developing skin cancer by destroying your skin cell’s RNA and DNA. 



UV purifiers can be used in a variety of ways, including as a means of antibacterial and antiviral disinfection. Along with a HEPA air purifier, UV purifiers are another option that can neutralise whatever bacteria the HEPA filter has captured.

Adsorbent purifiers

Adsorbent purifiers, which are often made of activated charcoal, trap contaminants and odours that can be circulating within your house. Adsorbents are usually utilised in different environmental cleaning activities due to their capacity to absorb harmful chemicals.


Adsorbent purifiers don’t produce any toxic byproducts, making them perfectly safe to use. They also eliminate unpleasant smells and volatile organic compounds that HEPA and ionic purifiers are unable to remove.

Ozone Generators

Naturally, the word ‘ozone’ suggests that it’s not advisable to use ozone generators indoors. However, due to potential deceptive marketing and their industrial uses, it is crucial to discuss the uses and restrictions of ozone generators. 


Ozone generators, commonly referred to as ozone air purifiers, split oxygen molecules into two oxygen atoms using either UV radiation or a corona discharge. 


Ozone generators can be used to eliminate microbes and purify the air in industrial, uninhabited areas.

Advantages of Using Air Purifiers

Generally, air purifiers are useful home appliances because they keep your home clean and healthy. We sum up here the major contribution of air purifiers at home.

  • Ideal for families with petsHEPA air purifiers trap pet dander. These are in the form of pet hair and dead skin. Better get an air purifier if you have pets at home. 


  • Suitable for family members with compromised health—Family members who are immunocompromised or those with lung allergies can benefit from air purifiers. More importantly, if you have family members who smoke, air purifiers can get rid of the harmful effects of second-hand smoke. 

Remove bad odours—The activated carbon filter included in most filtered units absorbs odours and helps make the environment more balanced. This is useful if your indoor air is polluted with scents from cleaning aids, disinfectants, paint, harmful gases, smoke, rotten food and rubbish.

Disadvantages of Air Purifiers

If there are pros, there are also cons. We have consolidated some of the cons you may encounter with air purifiers.

  • Device performance is not 100 percent as some claim. It helps if you contribute to making sure that your space has fewer pollutants to maximise the efficiency of your air purifier.

 Upkeep. Any valued possession should be cleaned or maintained to keep its performing lifespan.

Levels of noise. Some air purifiers, especially those for industrial use, are inconveniently noisy. Choose an air purifier that produces ambient sound for added comfort.

Rensair: The World’s Best HEPA Air Purifier

An air purifier is helpful if you or any of your family members are struggling with allergies or if you have an unpleasant indoor environment. And if you’re looking for one, look no further than Rensair air purifier.

Rensair portable air purifier is designed for Australian public and commercial spaces, including hospitals, schools, offices, retail and hospitality. It can capture and eliminate 99.97% of viruses and other airborne contaminants.

Learn more about why Rensair is the best HEPA air purifier in Australia. For further enquiries, call us today.