Best Air Purifier Buying Guide: How to Choose Air Purifier

Living in pure metropolitan cities surrounded by dust, impure air, and hefty pollution made us forget fresh air. People can experience significant health issues as unnatural air becomes more prevalent outside. Even indoor air is unsafe to breathe, with all kinds of contaminants, pollen, and minute particles, we are far from breathing pure air indoors.
In these circumstances, Air Purifiers come into the picture to rescue and respite us from breathing toxins into our bodies.
Air purifiers are devices specifically designed to use indoors to clean and remove contaminants to improve air quality. With increased diseases and allergies, air purifiers are a necessity these days.
We cannot control the existence of unhealthy air present outdoors, but with the best air cleaner indoors, we can be assured we are breathing quality air indoors.
Go through the guide below to buy the best air purifier for yourself.
Why Do We Need Air Purifiers?
Using an air purifier is the only practical approach to purifying the air within a home or office. They help us maintain a healthy environment by removing dust particles, odors, smoke, gases, pet dander, ragweed, mold spores, and other pollutants.
Health Benefits of Using Air Purifiers
- People highly recommend air purifiers for individuals with dust allergies.
- Air purifiers help control the environmental triggering particles, which are micron size.
- Living near highly polluted areas can worsen our respiratory systems. In these areas, it is advisable to have an air purifier.
- Harmful pollutants and unwanted impurities can trigger asthma attacks, which can cause disastrous conditions, especially in kids. In this scenario, air purifiers help manage improving air quality, which can ease the asthma condition.
- Pet dander can be another significant factor triggering any allergies, and air purifiers help remove pet dander to make the place safer for humans and pets.
How Air Purifiers Can Help to Improve Air Quality?
- Air Purifiers Performance: Air purifiers can reduce the risk of exposure of lungs to harmful pollutants and boost the air quality, which results in improving our immunity system. The overall health status of a person improves, and the air purifiers contribute to healthy breathing and living.
- Air Purifiers Effectiveness: Air purifiers show a powerful impact on our overall health. However, air purifiers cannot remove every minute particle in a room or from places that cannot be reached easily because many particles can sit on our bedding, sofa, walls, hard surfaces, and furniture.
- Some Facts To Know: Some air purifiers need heavy maintenance by involving changing filters frequently. Besides buying air purifiers, we also need to invest frequently in filter replacement.
How Do Different Air Purifiers Work?
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HEPA Air Purifiers
HEPA Air Purifiers use advanced methods to effectively remove odors, the smallest dust particles, and other pollutants. HEPA Air Purifiers are cost-effective.
- When To Buy HEPA Air Purifiers?
Buy HEPA Purifiers if you are an asthmatic patient, as the filters in this purifier remove 99.97% of bigger particles in the room.
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Activated Carbon Air Purifiers
Activated Carbon Air Purifiers are great purifiers to remove volatile organic compounds like smoke, fumes, odors, and gases from the environment.
- When To Buy Activated Carbon Air Purifiers?
If removing odors, chemicals, and odors is becoming a problem, purchase activated carbon air purifiers.
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Ultraviolet Air Purifiers
We can find ultraviolet light in ultraviolet air purifiers. The idea behind building ultraviolet air purifiers emerged from the instances in hospitals where UV light is used to dismiss harmful bacteria from the patient room or to disinfect bacteria from the laboratories.
UV air purifiers fight against harmful viruses and filter the air in a room with light and technology mechanisms.
- When To Buy Ultraviolet Air Purifiers?
Ultraviolet purifiers are a perfect option to prevent illness or give better protection and disinfection.
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Ionic Air Purifiers
Ionic Air Purifiers, as the name sounds, these air purifiers charge the positive ions with released negative ions into the air to emit heavily charged particles from the air.
- When To Buy Ionic Air Purifiers?
You can buy ionic air purifiers to remove small particles and molecules like bacteria and viruses.
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Electronic Air Cleaners
Electronic Air Cleaners use an electric charge to remove impurities from the air. They remove microscopic dust particles from the rooms.
- When To Buy Electronic Air Cleaners?
Electronic air cleaners can remove airborne particles and other dust particles of a certain size as long as the plates are clean.
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Central Air Cleaners
Portable Central Air Cleaners are world-class purifiers that connect with the central heating and cooling system to purify the air.
- When To Buy Central Air Cleaners?
Central air cleaners can remove all the micron size dust particles surrounding a room if installed correctly.
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Air-To-Air Exchangers
Air-To-Air Exchangers use two air streams of different temperatures to regulate the temperature and humidity in a room. It also removes old and stale air.
- When To Buy Air-To-Air Exchangers?
Air exchangers are energy efficient and cycle throughout the space thoroughly to refresh the air. Air exchangers use thermal energy to transform incoming air into fresh air to transfer indoors.
What Are the Top Features to Consider While Buying an Air Purifier?
Top Features:
- Consider filter types. The type of filter helps cleanse the air better. We have four times of filters, namely carbon filters, HEPA, Ionizers, and PECO filters
- Buy purifiers with less noise level to sleep better
- Filter service indicator light
- Air quality monitoring feature
- Presence of air-quality sensors
- Consider remote control facility to operate easily
- Air purifier capacity
- Ease of installation
- Maintenance and usage cost
- Child lock facility to prevent mishaps
- Air quality monitoring settings
Which Air Purifier Size Do I Require?
Selecting the right purifier size is a critical decision step in buying. We have mainly three sizes to buy depending on our room type. Not every size is appropriate for every room.
Air purifier size is important because it specifies the area it will cover. The room's square feet can decide the size of the air purifier.
How to Select the Right Air Purifier Size for The Room?
- Small Air Purifier: For areas like bedrooms, personal spaces covering up to 300 sq. ft and with a suggested CADR value of up to 150 are ideal.
- Medium Air Purifier: For areas like living room covering up to 270 sq. ft and with a suggested CADR value of up to 150 are ideal.
- Whole-House Air Purifier: For a total house covering up to 400 sq. ft and with a suggested CADR value of up to 400 are ideal.
How to Choose the Right Size for an Air Purifier?
Step 1: Where Do You Want to Place the Air Purifier?
Decide the room in which you want to place the air purifier. It could be your personal space, living room, or house.
Step 2: Measure Square Footage Area.
After deciding on a place, reckon the room (house) sq. ft.
Step 3: Match the Rate of Square Feet on the Air Purifier to Your Room
The selected room's sq. ft should cover the CADR value of the air purifier, or the CADR value should be at least two-thirds of the room area.
What To Consider While Shopping for an Air Purifier?
Keep the below points in mind before buying an air purifier:
- Cost of replacement filters: The frequent need to replace the filters will pinch our pockets so as not to bother ourselves; while buying, we can opt for an air purifier that eliminates maximum pollutants.
- CADR ratings: Clean air delivery rate (CADR) is extremely important to measure the volume of air that can purify the air at the maximum speed.
- ACH: Check Air Changes Per Hour (ACH) rate to ensure the air purifier's efficiency.
- Noise rating: Check the noise rating to have noise-free nights.
- Certifications and reputation:The more certifications the unit possesses, the more trustworthy it is to buy from them. Some examples of certifications include AHAM, Energy Star, UL, and CARB. Also, check the manufacturer's reputation across the platforms available.
- Room size: Get the details of the room for which you are planning to get an air purifier, as the size of an air purifier depends on the room size.
- Maintenance cost:Depending on how often you need to clean and replace the filters inside the purifier can decide your maintenance cost or extra cost.
Best Air Purifier Brands
Dyson Air Purifier
The only air purifier with 360 degrees of oscillation with an air multiplier technology captures gases, viruses, and pollutants. We can control the air purifier using the Dyson link app.


Xiaomi Air Purifier
Xiaomi Air Purifier filters the air in no time. Xiaomi promise 99.97% filtration. It shows excellent performance and a strong CADR value.
Samsung Air Purifier
The Samsung Air Purifier removes pollutants up to 99.97% with multi-layered purification. A range of Samsung Air Purifiers offers silent, noise-free, four-color indicators and easy maintenance features in the air purifiers.


Panasonic Air Purifier
Panasonic Air Purifier controls pollution levels by closely monitoring it indoors. The impeccable features include an active sensor, humidification, and a glass panel.
Air Purifier Benefits
- Decreases the likelihood of airborne illness
- Eliminates unpleasant odors
- Relieves asthmatic symptoms
- Reduces harmful chemicals in indoor environments
- Lowers the chances of airborne diseases
- Enhances Sleep
- Eliminates dangerous radon
- Removes potentially dangerous particles
- Has the potential to lengthen people expected life
Air Purifier vs. Humidifier?
Using the basic aspects of a fan filter surface, the air purifier for home and air purifier for office and any other space filter the air and eliminate impurities. In contrast, a humidifier adds water to the air by boiling and evaporating water in the steam.
Which one do you need?
- If you don't need moisture and want to eliminate harmful pollutants in the air, buy an air purifier for allergies and if you need to increase the moisture in the air, buy a humidifier.
- An air purifier for dust helps clean dust in the air and helps to ease allergies and asthma. Humidifiers don't help with any triggered allergies or impure air.
- Air purifiers are quite more expensive than humidifiers.
- Air purifiers are seasonal devices and can be used throughout the year, whereas humidifiers are not seasonal devices end can be used when we have dry indoor air.
FAQs
1. Do air purifiers help in COVID-19 prevention?
1. Do air purifiers help in COVID-19 prevention?
2. Are air purifiers an unnecessary expense?
No, completely worth the money.
3. Do air purifiers improve or worsen the amount of oxygen in space?
No, purifiers only make the air healthy to breathe.
4. Where should I install an air purifier?
Install near the doorway or a window.
5. What distinguishes an air purifier from a humidifier?
Air purifiers clean the air, whereas humidifier doesn't clean.
6. When should I purchase a new purifier?
Replace the air purifier once every 12 months.
7. Can air purifiers lessen the symptoms of allergies?
Yes, the best air purifier lessens the symptoms of allergies.
8. What should I do to avoid mold growing in my purifier?
To avoid mold growing in your purifier, keep the humidity levels in control, preferably not over 50%.
9. Do air cleaners benefit the lungs?
Yes, some air cleaners benefit the lungs.
10. Can we sleep with the air purifier on?
Yes, you can.
11. What drawbacks do air purifiers have?
Drawbacks:
- Regular maintenance
- Windows need to be closed.
- It won't remove all the particles.
12. What kind of air purifier is suitable for asthma?
HEPA air purifiers with H13 standard filters are suitable for asthma.
13. Can Air Purifier Filters Be Washed?
Yes, if the label says then, filters can be washed.
14. Is a HEPA Filter Washable?
Depending on the label, the HEPA filter is washable.
15. Can we clean an Air Purifier?
Yes, you can clean by following the safety precautions.