Air purifiers capture floating indoor air pollutants. Their effectiveness depends on the filter used:
Air purifiers are designed to remove floating airborne pollutants, including allergens (pollen, pet dander, dust mites), microscopic particles (smoke, soot), pathogens (bacteria, some viruses), and household odors or volatile organic compounds (VOCs).
Yes, air purifiers can help contain norovirus, primarily by capturing the airborne viral particles created when an infected person vomits. While handwashing and surface disinfecting are the most critical steps, an air purifier offers a helpful extra layer of protection.
No, standard air purifiers do not physically remove moisture from the air. They merely cycle air through filters (like HEPA and carbon) to trap pollutants. However, the continuous airflow from the device's fan can increase evaporation from your skin and nasal passages, making the air feel drier.
Daikin air purifiers minimise asthma and allergy symptoms by removing dust particles and pollen from your air, and keep you healthy by filtering airborne bacteria and viruses.
You lie awake wondering if the gentle hum from your air purifier will keep you up all night. Or maybe you're concerned about running electronics while you sleep. These worries are common. The truth is that sleeping with an air purifier on is not just safe—it's one of the best things you can do for your health.
While air purifiers help reduce allergens and indoor pollutants, they come with notable downsides. The primary disadvantages include hidden maintenance costs, health risks from specific technologies, and limited effectiveness against gases.
Air purifiers do not actively remove moisture from the air, but their fans circulate air which increases evaporation. This airflow can dry out your nasal passages and worsen sinus irritation—especially if you sit directly in the breeze or live in an already dry climate.
Yes. Humidity at 70% or above can make your bedroom feel sticky and uncomfortable, interfere with REM sleep, and increase wakefulness. High moisture levels also encourage mould, mildew, and dust mites, which can worsen allergies and respiratory issues, particularly during cooler months when ventilation may be limited.
Yes, air purifiers can be highly beneficial for managing COPD (Chronic Obstructive Pulmonary Disease). By removing airborne irritants like dust, pet dander, and smoke, they reduce the triggers that cause coughing and shortness of breath. They can even improve cardiovascular health markers associated with the disease.
Air purifiers help reduce the spread of cold and flu by capturing airborne virus-containing aerosols, though they do not prevent direct transmission or surface contamination. They serve as an additional layer of protection alongside hand-washing and avoiding close contact with sick individuals.
To avoid getting sick when living with sick people, prioritize isolating the ill individuals, boosting ventilation, cleaning high-touch surfaces daily, and strict hand hygiene. Designate a single caregiver, wear masks in shared spaces, and avoid sharing items like towels, utensils, or bedding.
A stomach virus (viral gastroenteritis) cannot be cured by medication; your own immune system is what ultimately kills the virus. Treatment focuses on supportive care: staying hydrated with electrolyte drinks, getting rest, and eating bland foods until your stomach settles.
You likely need an air purifier if you or your family members experience chronic allergy symptoms (sneezing, itchy eyes), have respiratory conditions like asthma, share your home with shedding pets, notice persistent cooking or musty odors, or live in an area with high outdoor pollution or wildfire smoke.
Overnight filtration can reduce particle exposure during the longest continuous time spent in a single room—especially during allergy seasons or periods of poor outdoor air quality.
Air purifiers only catch airborne dust. They cannot remove dust that has already settled on floors, beds, or furniture. If your room is still dusty, it is likely because your purifier is struggling to keep up with constant dust generation, has poor airflow, or needs maintenance.
Signs of high indoor humidity (over 50-60%) include condensation on windows, a persistent musty odor, and visible mold or mildew spots. You might also notice peeling paint, sticky air, warped wood floors, or an increase in allergy and asthma flare-ups.
The ideal humidity level for sleep is typically between 30% and 50%. This range helps keep your airways clear, prevents dry skin, and supports overall comfort throughout the night.
Mold can technically begin to grow at 55% relative humidity (RH), though it thrives best at 60% or higher. While 55% is on the low end of the risk spectrum, the US EPA recommends maintaining indoor humidity levels between 30% and 50% to completely discourage mold formation.
Sinus infections are primarily caused by viruses and usually resolve on their own. The fastest way to "kill" the infection naturally is to boost your immune system and flush out the trapped mucus using targeted remedies:
HEPA air purifiers may boost brain power in adults over 40 – new research. Using an in-home HEPA purifier for one month spurs a small but significant improvement in brain function in adults age 40 and older. That's the result of a new study we co-authored in the journal Scientific Reports.
Vitamin A and/or C deficiencies: Diets low in vitamin A and/or C contribute have been shown to contribute to dry nose as well as nosebleeds. Sjögren's syndrome: Sjögren's syndrome is an autoimmune disorder that causes the body to not produce enough moisture in certain glands.
For people with allergies, scientific studies have shown that air filtration reduces these airborne allergens and may provide some relief. Experts recommend two types of filtration: For a single room, look for an air cleaner with a HEPA (high-efficiency particulate air) filter.
3) Never buy an air purifier that has less than a 2.5-inch deep bed of carbon. The third air purifier you should never buy is one that doesn't have enough carbon. As I mentioned earlier, activated carbon is the most important filter to get rid of chemicals and odors in the ambient air.
One air purifier can work for small homes or apartments with open floor plans. Closed doors and walls block airflow, reducing effectiveness in separate rooms. For most homes over 1,000 square feet with multiple closed rooms, using two or more purifiers provides better coverage.