Air Purifier FAQ
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Air Purifier Frequently Asked Questions (FAQ)

Here at, we received tons of air purifier questions that you probably can relate to. From how air purifier works, types of filters, functionality, allergies and symptoms to product recommendation. While we are happy to answer all of your questions, from time to time we do missed out a few due to the sheer numbers of emails piling up. To give everyone a quicker and more up-to-date response, we compiled a list of frequently asked questions by our reader along with answer and recommendation as well. The list will be updated regularly so feel free to drop us a comment or question if you did not find the answer that you need.

Air Purifier

I seen quite a few filters listed here that is either washable or reusable. What is the differences between them?

Not much as here in, we associate both under the same category. Washable/ reusable air filter is a type of filter that can be use multiple times through simple vacuuming or rinsing. Commonly found in permanent pre-filter that does not infuse with charcoal or activated carbon, HEPA/ carbon filter is typically not washable/ reusable with a few exception of air purifier with permanent HEPA filter (limited through light vacuuming). Soaking a HEPA or carbon filter through water could potentially damage the filter functionality. Always refer to the instructional manual to check if the air filter is reusable/ washable.

I heard of the danger of VOCs and was told that an air purifier can effectively remove it in from our home. Is it true?

Yes, air purifier can be effective against VOCs but the prerequisite requirement is to have an activated carbon filter in its filtration. Volatile organic compounds (VOCs) is an odorless gas made from variety of chemicals e.g. Benzene, Toluene, Formaldehyde, Ethanol. Evaporate from our daily household products such as paint, detergent or plastic, exposing VOCs to our body would have short to long-term adverse health effects from eyes nose irritation, headache, dyspnea, nausea, fatigue to the more severe kidney, liver and central nervous system damage. The solution? Identify and remove VOCs based product is a good start while increasing the room ventilation is another immediate solution. Air purifier with advanced carbon filter is a non-organic solution that can capture different micron sizes of airborne gas based particles. Specialized chemical air purifiers that comes with additional filtration or ionizer is a clear indicator of good VOCs air purifier that would effectively reduce the VOCs level in our home.

I am suffering from seasonal allergies and to make matters worse I stay close to nature surrounded by many trees. Can air purifier get rid of pollen/ spore/ mold once and for all?

Air purifier can get rid of airborne mold/ mould plus any associate allergens and toxic substances released. Inhaling or exposing to mold could lead to adverse health effect and trigger the infamous asthma attack. If you are tested or suffering from symptoms like cough, wheezing, chest tightness, nasal congestion, irritation on eyes, skin or throat, an air purifier would serve as a great reliever. Furthermore, an air purifier with antimicrobial treatment can stop the microorganism from further growth including those that are trapped within the filter. For a complete mold-free environment, regular housekeeping is require as air purifier cannot capture existing mold stuck on the ground or wall. As mold thrive on high humidity area, we recommend using a dehumidifier alongside an air purifier to maintain the room humidity at an ideal level.

I am suffering from eczema and desperately trying to find the root cause to it. Can air purifier actually treat eczema or other skin related diseases?

Yes air purifier can help with eczema but only to a limited extent. Also known as dermatitis, eczema is a chronic skin disorder where the skin becomes cracked, red inflamed and intensely itchy. Often caused by dry skin, food we consumed (milk, egg, gluten, nuts, fish, soy based product), scratching (due to itchiness), sensitive skin and poor air circulation. An air purifier can help with the last part by capturing eczema link allergens like mold, spores, pollen and bacteria. With all unwanted airborne particles captured, air purifier would then distributing and circulating clean, filtered air in your home.

I own both air purifier and a dehumidifier model. Can I run both air purifier and dehumidifier at the same time in a same room?

There is no conflict in running air purifier and dehumidifier at the same time as both function differently. Air purifier is the unit to go for if you have concern on allergies and other common symptoms like sneezing, coughing. It circulates clean air by capturing airborne irritants and gases e.g. dust, pet dander, pollen, mold, smoke and odor. On the other hand, dehumidifier absorb moisture from the air that stop microorganism growth and maintain the ideal room humidity level. Microorganism like mold requires a high humidity environment to thrive. In that sense both air purifier and dehumidifier would help reduce the number of airborne irritants and allergies that is associate with it. One word of advice is not to place both air purifier and dehumidifier side by side as there could potentially be obstruction in the airway. The heat generated from dehumidifier could also damage the air purifier’s filter.

Just brought a * air purifier and I was wondering how long does it take to clean a room at around 300 sq. ft.?

On average most air purifier would take 30 minutes to 2 hours to completely cover an entire room. Highly dependent on the fan speed, room size and the air purifier’s purifying coverage, the air purifier first must have the capacity to fullfill the room size. An estimated 300 square feet room size would need an air purifier with at least 300 square feet of purifying coverage. Parallel with the purifying coverage, an air purifier running in 4 speed would take only half of the time covering a room then the same air purifier running in 2 speed. To get the best out of the air purifier, we recommend running the unit at full speed for at least couple of hours and switch back to lower speed to maintain the room quality standard. You should also keep your air purifier running 24 hours a day as dust and other airborne particles circulate throughout the day.

My air purifier is not performing well which I suspect is because of the accumulated dust in it. How do I clean the air purifier filter?

Depends on the type of air purifiers you are working with, most air purifier filters are cleanable but only through vacuuming or with a soft brush. First thing first, always turn off and unplug the air purifier before performing any cleaning. Gently remove the cover panel and remove the filters one by one. As a general guideline for clearing away filter’s dust, standard permanent pre-filter can be vacuum or clean with warm, soapy water. Most 2-in-1 carbon pre-filter, permanent filter, HEPA filter and carbon filter can only be clean through careful vacuum on the pleated layers. There is specific HEPA/ carbon filter that require interval replacing rather than cleaning due to the relatively short lifespan. Do not use household cleaners or detergents to clean any of the filters. Also, never place filter into a dishwasher unless specifically stated in the manual. If you notice the filter is worn out/ damaged to the point of beyond cleaning, replace the filter. Finally as an added bonus point, keep the air purifier's airflow inlet/ outlet clean to prevent dust from compiling on the air ventilation. Finally, repeat the above steps every 1 – 3 months or when the filter clean/ indicator lights lit up.

I am hypersensitive to all kinds of allergies from the common dust to the irritating pet dander. Can air purifier manage or better yet suppress my allergic reaction?

Yes air purifier can help with your allergies but it's only limited to airborne irritants. Household airborne particles like dust mite, pollen, mold, spore and pet dander is often the first line of triggering point to any allergies including asthma. Often irritating than deadly, every time we inhaled these airborne irritants, our body will react with symptoms like wheezing, sneezing, coughing, nausea, red eyes and even headache. What air purifier does is simple, it will effectively remove any airborne particles and allergens before we inhale it into our lungs. With clean air achieved, you will breathe a lot easier without any of the pesky irritants lingering around. The only requirement need from your side is to pick the right types of air purifier for the specific allergens you are dealing with. Again, do keep in mind that anything that falls into the ground will not be capture by an air purifier. It is advisable to also vacuum/ clean your home regularly to help build an allergy-free environment.

What are the things I need to take note if I plan to use my air purifier throughout the day. Is it possible for an air purifier to be energy-efficient?

In general most air purifier is very energy-efficient as the energy consumption is around the same rate as a lightbulb at LOW speed (keyword: LOW). Keep in mind that air purifier is require to be ON 24x7 to achieve the best possible result, so here are some few energy saving tips that you can practice to get the most out of an air purifier. First and foremost, choose the right air purifier that would cover the right room size. Lookout for ENERGY STAR rated model which will be added bonus point. An air purifier that does not fulfil the purifying coverage would take ages and higher speed to cover an entire room. Never place an air purifier too far from the room as you will need higher fan speed to reach the intended target. Remember higher speed = higher power consumption. Another tip that most people forgot is keep your windows and windows shut when your air purifier is in operation. This will block out any external pollutants thus reduce the workload of an air purifier. A good ir purifier does not need to operate at MAX speed all the time. Always start with highest speed for couple of hours and tune it down to low speed to avoid the unnecessarily energy usage. To avoid all the above speed adjustment hassle, choose an air purifier that comes with Auto mode as standard and let it works its magic. Lastly always clean or replace the filters accordingly to maximize the air purifier filtration efficiency without resorting to higher fan speed.


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