Air Purifiers FAQs

Air Purifier Questions We Get Asked ALL the Time

Do you have a lot of questions about air purifiers and you feel overwhelmed with the many options? Well, you don’t have to be confused any longer, we have all the answers you need!
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Stop the Wondering. Here are People’s Frequently Asked Questions About Air Purifiers Answered for You

Finding the perfect Air Purifier can be quite difficult, especially with all the options available out there.

Will it be the right choice for me? Would it work for my allergies? Is it really worth it buying this?

Any of these questions buzzing around your head?

No need to worry anymore

We have all the answers you’ve been looking for right here.


Air Purifiers for Allergies FAQs

Q: Will it Cure My Asthma or Allergies?

A: No. They DON’T CURE asthma or allergies. They prevent them from worsening or acting up. They help to lessen the number of impurities in the air that you breathe, which in turn, might offer you some relief from the symptoms associated with these conditions. They’re not meant to act as a treatment or cure for any medical conditions, and no one should tell you otherwise. They’re a stepping tool that you can utilise to improve the indoor air quality of your home or office. If you suffer from either of these conditions, you should seek medical attention immediately.

Q: What’s the Optimal Position to Place it if I’m Allergic to Animal Dander?

A: Whatever reactions you have to dust, pollen, pet dander or smoke, these products have your back. If you have pets and are allergic to pet dander, then the right area to place yours would be the living area where your lovely pets spend most of their time. However, it’s essential to remember that you need to keep your pet/s out of your bedroom.

Q: What’s a Micron?

A: The acronym is short for micrometre. A micron is one-millionth of a meter and approximately 1/25,000th of an inch. You use the microns to measure airborne particle sizes. It’s crucial since most harmful airborne particles are invisible to the naked eye, making them easy to inhale or distribute in your indoor environment. A great example is where dust mite allergens can be as small as 0.1 to 0.3 microns, which is considerably tinier than a single strand of human hair that typically measures 30 to 120 microns.

Make sure you read our guide on the Best Air Purifiers For Allergies.


Air Purifiers for Dust FAQs

Q: What Effects Can a Little Dust Have on One’s Health?

A: Even though dust and other various imperceptible particles are undetectable to the human eye and other senses, they can jeopardise your lungs and heart. Particulate Matter1, airborne particles, is a mixture of microscopic solids and liquid droplets suspended in the air. The combination includes dust, chemical fumes, gases, smoke and biological contaminants such as skin flakes, mould, dust mite and roach excrement, pollen, pet dander and other sources. When you inhale these elements, they pose a severe danger which can result in the development or worsening of lung disease. Asthma and allergy sufferers are particularly at risk, as well children and the elderly. These are but one of the most straightforward solutions to reducing these very dangerous health hazards significantly.

Q: What Happens if Your Air Filters aren’t Changed or Replaced?

A: With dirty or old air filters, your air might not be getting filtered thoroughly. These filters regularly trap dust and other particulates. Thus, if you don’t clean them regularly, it can result in clogging which will destroy your purifier and lead to more asthmatic attacks since your air is intoxicated. Therefore, clean or replace air filters to ensure that your product is performing best.

Q: Why isn’t Indoor Air Pollution a Topic Most People Know About?

A: When we think about air quality hazards or pollution, we tend to lean on outdoor pollution. Having clean air to breathe is more of a generalised environmental concern. As long as we get rid of excess amounts of smoke and have inner sanctums of our homes to take refuge in, most of us then view air quality as an issue that applies to the outdoors only. However, that’s not right. With excessive indoor air pollutants plaguing your health, knowledge is the key.

For more a more detailed guide, check out our review of the best dust purifiers.


Hepa Air Purifier FAQS

How do They Work?

HEPA is an acronym that stands for High-Efficiency Particulate Air, so a HEPA filter is a High-Efficiency Particulate Air filter. A HEPA filter is a type of mechanical air filter; it works by forcing air through a fine mesh that traps harmful particles such as pollen, pet dander, dust mites, and tobacco smoke. Filters, whether for an air cleaner or other implementation, come with many benefits and claims.

Want to know more?

They use filters to filter allergens and pollutants from the air. Air filters utilise fine sieves to filter particles like dust, smoke, allergens and other pollutants. The finer the sieve you use, the smaller the particles it traps.

The HEPA Guarantee

The High-Efficiency Particulate Air (HEPA) filters which are guaranteed to catch 99.97% of airborne particles larger than 0.3microns set the benchmark for air filters. HEPA filters remove smaller allergens like dust, chemicals, asbestos2 , smoke, pollen and pet dander. The more times air passes through the HEPA filter, the cleaner the air become.

Q: What’s a HEPA Filter?

A: A HEPA filter is a device that traps and blocks small particles from going back into the air. A certified HEPA filter is essential and is tested to trap particles as minute as .3 microns with 99.97 % efficiency. One micron is 1/1,000,000 of a meter. A 0.3-micron particle is 300 times smaller than a human hair and 30 to 50 times smaller than the human eye can see. They help make your environment fresh and crisp. HEPA air purifiers are proven to be the most effective air units in the war against pollutants and toxic air impurities.

Q: Which Ones are the Best for Allergy & Asthma Sufferers?

A: Proper air purification3  is vital for homes of allergy and asthma sufferers since allergens and asthma triggers can conveniently find their way into your homes, despite your best attempts. HEPA Air Purifiers are the best and premium choice for these sufferers since they help eliminate up to 99.97% of allergens up to 0.3 microns in size from your environment. The IQAir HealthPro Plus and the Honeywell 50250-s True HEPA Round Air Purifier are both excellent and premium choices for sufferers of allergy and asthma. These units feature the incredible multi-stage air filtration system, which consists of a particle pre-filter, a HEPA filter, and a carbon filter. So, you can always rely on these HEPA sensations to make your health better.

Q: What’s CFM?

A: CFM represents Cubic Feet per Minute. The CFM measurement represents the cubic feet of air that moves through the unit per minute. It’s incredibly vital when considering the air purifier system that is perfect for you and the higher the CFM, the better potential air purification results.


You must always remember that a variety of factors impact the CFM. These include fan speeds, insulation, airflow in the room, the furniture in the room, and the number of impurities in the air. Unfortunately, there’s an equation that will help you determine an ideal CFM, which can provide help when deciding on air purifiers.

Simply put…

To find the ideal CFM, you need to calculate the total volume of your space (length x width x height in cubic feet) and divide this number by your desired ACH (Air Changes per Hour).

Why not read our detailed buying guide on Best Hepa Air Purifier.


Honeywell Air Purifier FAQS

Q: What’s the Intelli-Check Monitoring System?

A: They offer you a healthy, fresh and crisp environment, whether you are using them at home with your loved ones or at the office. They help eliminate up to 99% of airborne particles from the air. Whether it’s debris, dust, pet dander, pollen, and smoke, they are no match for these air systems. They mainly have incredible features like the Intelli-Check Filter Monitor that serves as a handy guideline for replacing your pre-filter. Basing its functionality on the hours of use and operating speed, the Intelli-Check Monitoring system alerts you when it’s time for a new filter. When the indicators light up, it’s time to replace the filter.

Q: How Do I Change the Filters?

A: Changing your pre-filter is as simple as ABC. First, you have to disconnect the purifier from the power outlet to ensure security. Next, you have to unscrew the locking system by turning it counter-clockwise. After that, you need to remove the unit’s end-cap and take out the filter assembly. Continue by undoing the Velcro fasteners and take out the used pre-filter. Lastly, you have to install the new pre-filter by safely putting it around the HEPA filter with screws provided.

Q: How Do I Select the Best Product for My Lifestyle & My Specific Needs?

A: Many models offer air filter upgrades. By choosing an upgraded air filter, you can get an entirely customised product that is tailored to suit your needs. When shopping for an air purifier, you need first to consider what kind of indoor air pollutants you are trying to eliminate. For instance, you need to know whether you want to remove allergens, odours, chemicals, smoke or germs and bacteria. There are numerous filter technologies to address the specific needs of your home.

You should also read our guide on the Best Honeywell Purifier.


Ionic Air Purifier FAQS

Ionizers use a powerful air cleaning technology that doesn’t require a physical filter to produce clean, fresh air. It’s this feature alone that makes an air ionizer for home or office use so attractive for many consumers. As a filter-less air cleaner, an ionizer makes for a great long-term investment.

Want to know more?

Another important feature to point out is that it can remove particulates as small as 0.01 microns. This is the smallest size of toxins you can strip from the air and includes super-fine dust, bacteria, pollen, pet dander, mould spores and more.


When shopping for a room ionising device, you will often find it packaged with one or more additional air cleaning features. These upgrades fill in the gaps where ionic technology needs help.

The two most common features include:

Carbon Filter

This filter helps to eliminate smoke and odour. It works by absorbing gaseous particles and makes a room smell fresh. It’s a real filter but cheap to replace.

Ultra Violet (UV) Light

UV-C radiation is completely safe for humans but destroys viruses and bacteria. It works by breaking up the DNA structure of these particles, which renders them harmless and creates a sterile environment. UV lights last around 10,000 hours and are cheap to replace.

Q: Is it Economical to Purchase?

A: Yes, they are the second-most popular types of air systems since they have stylish designs and the whisper-quiet operation. Moreover, they don’t require filter replacements; they’re filterless, and they’re also easy to clean and maintain. Thus, these air systems are a relatively economical way to refreshen the air, especially to remove the second-hand smoke and they require less energy to operate.

Q: Do They Emit Ozone?

A: To some varying degrees, they all release ozone. According to a 2016 study by some environmental researchers, they found out that some products release about 2.2 milligrams of ozone per hour or nearly as much as a continually running photocopier. According to the research done by the Environmental Protection Agency, air ionizers are more incredible at charging small particles in the air than larger particles. However, since people have particles of various sizes polluting their indoor air, these air systems can present a problem. They emit small amounts of ozone, which is a common lung irritant and detrimental to the environment. While most of us with respiratory conditions may have their issues improve, some may develop additional breathing problems.

Q: Are Multiple Air Purifiers Better for Severe Allergies?

A: Yes. About 30% of our time at home is spent sifting away into dreamland. Having one in the bedroom will directly sort out problems that may otherwise prevent you from breathing smoothly throughout the night. Most of us enjoy the white noise of the fan to fall asleep. If you’re a light sleeper, you need to use the SLEEP feature to dim the display and quiet the fan. So, you can kiss your allergies goodbye and enjoy the serene atmosphere.

We have more information on the best Ionic Pro air purifiers.


Mould Air Purifier FAQs

Q: What’s Mould?

Mould is a microscopic fungus, thus it’s hard to see with the naked eye. They filter these allergens through the use of filters, electrical attraction, or the ozone.

Q: How Do Air Purifier Filters Work Against Mould?

Filters utilise top-quality sieves that filter particles from circulating air. As it flows into the cleaner, the better and more delicate the screen used, the smaller the particles it traps.

Q: What are the Best Air Purifiers Against Mould?

The best cleaner for mould spores is the High-Efficiency Particulate Air (HEPA) filters, which is guaranteed to capture 99.97% of airborne particles larger than 0.3 microns. Room air conditioner filters only capture particles 10.0 microns or larger.

HEPA filters remove smaller allergens like these stubborn mould spores, dust, smoke, chemicals, asbestos, pollen, and pet dander.

Common Questions

How Often Should You Run Your Air Purifier?

How Long Do Air Purifiers Take To Work?

Should You Leave Your Air Purifier On All The Time?

Can You Leave An Air Purifier On All Night?

In Conclusion

You shouldn’t be confused about anything regarding these air purifiers anymore, but if you do, please feel free to read some more on that topic here: Best Air Purifier For Mold.

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Written by
Mark Johnson
Cleaner Living Expert

Mark has discovered how a clean environment can help in preventing certain air born diseases, allergies and asthma. These days, Mark’s mission is to help businesses, individuals, and families find easy solutions for creating a healthy and safe work and living space, no matter your health condition.