What are Air Purifiers? What do they do?
An air purifier, often known as an air cleaner, is a device that eliminates impurities from the air in a room to enhance indoor air quality. These products are frequently marketed as helping allergy and asthmatic sufferers, as well as minimising or eliminating smoke and other pollutants in the air.
What is the need for an air purifier?
We are all required to leave our houses every day for work , so we are constantly exposed to harmful air contaminants, and there are limited ways to protect ourselves. But once we are indoors, we may utilise air purifiers to maintain a cleaner and healthier environment for ourselves and our families. Because of the recent severe levels of Air Quality Indexes (AQIs) around the country, air purifiers have become as necessary as air itself.
1. Medical conditions like Asthma and Bronchitis
Asthma and bronchitis can occur as early as the age of five and afflict people for the rest of their lives. It can be made worse by irritants including dust, allergens, mould, and animal fur. The use of an air purifier makes it possible for people with respiratory disorders to enjoy the rooms of their homes where they spend the most time by removing the particles that irritate their delicate airways.
2. Allergic Rhinitis – Allergies due to pollen, dust or pets
Allergy sufferers may experience symptoms such as runny noses, sneezing, itchy eyes, and breathing difficulties when exposed to allergens such as dust, pollen, and pet fur. By lowering the concentration of these allergens, air purifiers enable people with allergies to breathe more comfortably.
3. Safeguarding the immunity of young and old
The weakest immune systems are those of young children and the elderly, who are unprepared for the polluted environment. It is crucial that they live in a clean atmosphere, and air purifiers assist in achieving this by removing air pollutants like smoking, chemicals, and dust to make it easier for them to breathe.
4. To keep away the secondhand smoke from indoor smoking
Smoking indoors exposes individuals to the risk of secondhand smoke and its unpleasant odours. Using an air purifier makes it simple to get rid of both smoke and odour.
5. Additional pollution concerns and unpleasant odours
Living in a city is challenging because of the vehicle emissions, smoke, foul smells, and harmful allergens that may quickly enter your home and cause health problems. Using an air purifier to actively clean the air is one of the greatest ways to get rid of such harmful contaminants.
How does an Air Purifier work?
There are two different kinds of air purifying technologies used by air purifiers: active and passive. Passive air purifiers employ air filters to eliminate pollutants, whereas active air purifiers discharge negatively charged ions into the air that make contaminants attach to surfaces. Passive purifiers are more efficient since all dust and particle matter are permanently removed from the air and collected in the filters. To cleanse air, several techniques of variable efficacy can be utilized, some of which are listed below.
What are the types of filters in air purifiers?
There are several distinct types of air filters used in air purifiers in varying combinations. Most of them employ the 7-stage filtering method. Learn more about these filters’ operations in the below.
- Pre filter/ Fine filter prevents the HEPA filter from clogging up since it traps large airborne particles like dust, non woven fibers and pet fur. They should be vacuumed or washed on a regular basis.
- Antibacterial/ Germicidal filters aid in killing bacteria, germs and dangerous microorganisms.
- High-Efficiency Particulate Air (HEPA) filter remove at least 99.5% of airborne smoke, mould and dust particles, some of which may be as small as 0.3 microns in diameter and invisible to the naked eye. This technology is also found in many high-quality vacuum cleaners, making it one of the finest options for allergy sufferers.
- Activated Carbon/Charcoal/ Ozone filter with its porous carbon traps impurities such as unpleasant odours, smoke and chemicals, but it is ineffective at eliminating chemicals or allergens. Carbon is formed from charcoal and has the ability to absorb odours and gases through its microscopic pores.
- Photocatalytic Oxidation (PCO)/ Cold Catalyst filter oxidises and breaks down pollutants, such as formaldehyde and other dangerous gases like benzene, ammonia, and TVOC, using a titanium dioxide-coated metal plate and UV radiation.
- Ultraviolet filter neutralises potentially hazardous germs and microorganisms with its UV light ensuring sterile air that is safer to breathe. These filters are often not ideal for allergies, chemical fumes, smoke or odours.
- Ionisers / Ionic or Ionisation filter sends out electrically charged ions into your home to bond with any potentially hazardous pollutants using a mild electrical field. Since they can no longer float, either they fall to the ground and be vacuumed up or are drawn out of the air by filter plates. The most effective way to filter out tiny airborne particles like smoke and dust is with this kind of filter.
How to choose the right Air Purifier for my home?
Before choosing an air purifier for your home, you should take into account the following things.
1. Size of the room
The suggested room size for air purifiers makes it simple to determine what size space will enable them to operate at their peak efficiency. A larger air purifier will consume more electricity, while a smaller one may not be as effective. You must measure the size of the space in order to choose which is appropriate for your house.
2. Purpose of buying the Air Purifier
If you are purchasing an air purifier for a specific reason, you can select the necessary filter and determine whether or not the air purifier you have chosen has it.
3. CADR and ACH ratings
- Clean Air Delivery Rate (CADR)
The Association of Home Appliance Manufacturers (AHAM) developed this rating system to demonstrate an air purifier’s efficiency. The higher the CADR value, the more effective the air purifier is at cleaning the air in the room.
- Air Changes per Hour (ACH)
This number reveals how frequently the purifier changes the entire air in the space within an hour. Simply said, a room with an ACH rating of 4x will exchange the air in that space four times every hour.
4. Air Quality Indicator
When the air quality in the room changes, an LED indicator on air purifiers changes colours. You are able to modify the fan speed in accordance with the quality of the air. Recent models from manufacturers like Dyson and Xiaomi have smartphone apps built in so you can control air purifier operations remotely and check the air quality in your home.
What are the features of Air Purifier to consider before buying ?
- Noise level – For sound sleep look for models with low noise levels.
- Filter change indicators – Since filters may need to be replaced over time, seek for a filter life indicator via lights or display.
- Fans and speed settings – You can use your appliance more effectively and as per your needs owing to the various fan and speed settings.
- Sensors – When your air purifier is running, air quality sensors help to monitor the air.
- Timers – Timer features are a useful option that enables you to configure when you want the appliance to run.
- Remote or App controls – Remote and app controls are a helpful feature that make it simple to modify settings from a distance.
- Weight – Make certain that you can easily lift and move your chosen model. Opt devices that are compact or those that include carry handles or wheels.
How to maintain Air Purifiers?
For improved product performance, the air purifier filter needs to be changed every 8 to 12 months. These filters can be easily found online and installed using a simplified method. You can consult the product manual or get in touch with customer service.
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