We all know that outdoor air can be polluted, especially in big cities. But did you knew that indoor air could be more polluted than outdoor air? According to the United States Environmental Protection Agency (EPA) information, our indoor air maybe 2-5 times more polluted than the air outside. Some of the factors why:
– Bad ventilation
– Indoor pollutant sources like:
- Dust mite feces
- Mold Spores
- Pet Dander
- Germs, odors
- VOC’s (volatile organic compounds)
- Tobacco smoke
- Building materials such as asbestos, formaldehyde, and lead;
- Household products and pesticides such as perfumes, cleaning products, air fresheners,
- Gasses such as radon and carbon monoxide;
Indoor air pollutants can cause asthma attacks and itchy eyes, sneezing, and runny nose. According to the American Lung Association, radon and tobacco smoke can cause even more dangerous health effects, including lung cancer.
The good news is that you can make your indoor air healthier by filtering out allergens, odors, and other pollutants from your space using an air purifier. Also, the EPA recommends using an air purifier.
But there are many air purifiers available on the market, and understanding which model is best for you may be tough. So we are here to help you with the guide.
Before we jump to guide, here is the list of the top 10 best air purifiers today.
Top 10 best air purifiers
Really one of the best air purifiers with so many features. Customizable panel to fit every home design, customizable filters for your needs. Have a cat? Choose Pet Allergy Filter. Anyone smokes inside? Take Odor Remover Filter. Monitor your air quality through your phone. Yes, Rabbit Air MinusA2 has wireless internet capabilities. Experience the smooth experience of fresh air with this machine. I will not mention; you just have to see this air purifier live.
If you are searching for an air purifier for your bedroom, then this should be your choice. It’s quiet, small, looks elegant, available in black or white color. The purifier is easy to use; it’s effective to clean small space from various allergens. Simple buttons for intuitive control on the top.
Best of the slim and smooth tower air purifiers with powerful filtration. A great choice if you need to save space. Perfect for small to medium rooms, can handle 155 square feet. One of the best features that customers love is the possibility to follow filtration – color turns from white to black when the filter is dirty. The air purifier has straightforward controls, handle to move it.
This Alen BreatheSmart is specially intended to relieve allergies and reduce dust. Great for large spaces up to 1100 square feet. An air purifier is quite large, but with customizable panels, you can personalize it to fit your space interior. One of the best features is auto mode – start it and forget it – it will adjust cleaning power itself. Smooth and simple controls on the top of the unit.
Already many years in the market but still one of the best air purifiers. It’s ideal for removing allergens and dust from medium-sized spaces. The best is the price. Similar competitors cost way more, but they are not way better. The unique 360-degree air discharge allows fresh airflow in all space faster. All in all, a very simple but practical air purifier with a couple of excellent features.
One of the most powerful air purifiers, rated as the top on the market for allergies and asthma. This machine can easily handle spaces up to 1125 square feet large. The best about this air purifier is its HyperHEPA filter, which eliminates 100 times smaller particles than regular HEPA air filters. And that’s not the only filter; it also has a pre-filter and odor filter. This combination makes it super-efficient. It’s quite heavy but still a portable air purifier; use casters when moving.
A powerful 4-stage filtration air purifier with many features for spaces up to 326 square feet large. It’s super compact, available in black and white colors, looks pretty attractive. Available various modes, for example, auto mode, ECO mode, quiet mode. There is no other similar design air purifier on the market.
A good looking air purifier with awesome features such as smart sensors with auto mode. Great for spaces up to 538 square feet large. The machine connects the multi-stage HEPA and odor filtration system. The very nice control panel with a lot of functions but easy to understand. This air purifier has almost all the features nowadays air purifiers have.
You may have seen this air purifier in the quietest air purifier tops. It improves your indoor air quality really quietly. The only setting when it’s loud is the turbo for super-fast air cleaning. Best for spaces up to 508 square feet. The monitor shows you how dirty is the indoor air – red for super dirty, yellow for medium, and blue if the air is clean. Maximum wattage is only115 W making this air purifier very economical. True-HEPA filtration works great and eliminates most of the particles in your room air. Available in white and black colors. Overall a perfect machine.
A quite new company in the niche and this is one of their best air purifiers. Despite the small size, it has 7-stage air purification, which can handle spaces up to 430 square feet. Equipped with an air quality sensor with auto mode and three light indicators showing how dirty the air is in your room. You can also choose manual Control with built-in three fan speeds.
Air Purifier Buying Guide
An air purifier is a device which removes contaminants from the air in a room. These devices are commonly marketed as beneficial to allergy sufferers and asthmatics and reduce or eliminate second-hand tobacco smoke. Air purifiers may be either small stand-alone units or larger units affixed to an air handler unit (AHU) or an HVAC unit found in the medical, industrial, and commercial industries.
How does Air Purifiers work?
Read below articles about purifying techniques if you really want to know how they work or scroll to the next article.
- Thermodynamic sterilization (TSS) uses heat sterilization via a ceramic core with micro-capillaries, heated to 200 °C (392 °F). It is claimed that 99.9% of microbiological particles – bacteria, viruses, dust mite allergens, mold, and fungus spores – are incinerated. The air passes through the ceramic core by the natural process of air convection and is then cooled using heat transfer plates and released. TSS is not a filtering technology, as it does not trap or remove particles. TSS is claimed not to emit harmful by-products (although the byproducts of partial thermal decomposition are not addressed) and reduce the atmosphere’s ozone concentration.
- Ultraviolet germicidal irradiation – UVGI can be used to sterilize air that passes UV lamps via forced air. Air purification UVGI systems can be freestanding units with shielded UV lamps that use a fan to force air past the UV light. Other systems are installed in forced air systems so that the circulation of the premises moves micro-organisms past the lamps. The key to this form of sterilization is the UV lamps’ placement and a good filtration system to remove the dead micro-organisms. For example, forced air systems by design impede line-of-sight, thus creating areas of the environment shaded from the UV light. However, a UV lamp placed at the coils and drained pan of the cooling system will keep micro-organisms forming in these naturally damp places. The most effective method for treating the air rather than the coils is in-line duct systems; these systems are placed in the duct’s center and parallel to the airflow.
- Filter – based purification traps airborne particles by size exclusion. Air is forced through a filter, and the filter physically captures particles. HEPA filters remove at most 99.97% of 0.3-micrometer particles and are usually more effective for larger particles. HEPA purifiers that filter all the air going into a cleanroom must be arranged so that no air bypasses the HEPA filter. In dusty environments, a HEPA filter may follow an easily cleaned conventional filter (prefilter), which removes coarser impurities so that the HEPA filter needs cleaning or replacing less frequently. HEPA filters do not generate ozone or harmful byproducts in the course of its operation. Filter HVAC at MERV 14 or above are rated to remove airborne particles of 0.3 micrometers or larger. A high-efficiency MERV 14 filter has a capture rate of at least 75% for particles between 0.3 to 1.0 micrometers. Although a MERV filter’s capture rate is lower than that of a HEPA filter, a central air system can move significantly more air in the same period of time. Using a high-grade MERV filter can be more effective than using a high-powered HEPA machine at a fraction of the initial capital expenditure. Unfortunately, most furnace filters are slid in place without an airtight seal, which allows air to pass through the filters. This problem is worse for the higher-efficiency MERV filters because of the increase in air resistance. Higher-efficiency MERV filters are usually denser and increase air resistance in the central system, requiring a greater air pressure drop and consequently increasing energy costs.
- Activated carbon is a porous material that can adsorb volatile chemicals on a molecular basis but does not remove larger particles. When using activated carbon, the adsorption process must reach equilibrium; thus, it may be difficult to obliterate contaminants. Activated carbon is merely a process of changing contaminants from a gaseous phase to a solid phase when aggravated or disturbed contaminants can be regenerated in indoor air sources. Activated carbon can be used at room temperature and has a long history of commercial use. It is normally used in conjunction with other filter technology, especially with HEPA. Other materials can also absorb chemicals but at a higher cost.
- Ionizer purifiers use charged electrical surfaces or needles to generate electrically charged air or gas ions. These ions attach to airborne particles, which are then electrostatically attracted to a charged collector plate. This mechanism produces trace amounts of ozone and other oxidants as by-products. Most ionizers produce less than 0.05 ppm of ozone, an industrial safety standard. There are two major subdivisions: the fanless ionizer and fan-based ionizer. Fanless ionizers are noiseless and use little power but are less efficient at air purification. Fan-based ionizers clean and distribute air much faster. Permanently mounted home and industrial ionizer purifiers are called electrostatic precipitators.
Why do I need an air purifier?
There are plenty of air purifiers on the market, and you have to know why you should buy one or another. When choosing an air purifier, first consider your indoor air quality lacks. If you have allergies or have asthma, you should choose an air purifier designed for allergy or asthma relief. As another alternative, smoke air purifiers are specifically created to remove smoke, fireplace soot, and other associated fumes that could aggravate existing respiratory conditions or cause unpleasant odors in your environment. If you are extremely sensitive to chemicals, you might consider an air purifier for multiple chemical sensitivities (MCS). These models contain even more odor and chemical filtration and are often manufactured with materials that will not off-gas chemicals into the air and aggravate your symptoms.
Here are some examples of conditions and airborne pollutants you might target.
If spring is your enemy, then an air purifier is your savior. Allergy air purifiers are excellent solutions for helping relieve spring, fall, or year-round allergies, including allergies to pollen and dust. Models that feature True-HEPA filter technology trap nearly 99.97% of allergens smaller than 0.03 microns (the ones that aggravate your symptoms the most). With these irritants out of your air, your incidences of itchy eyes, sneezing, coughing, and runny nose will be reduced, and your indoor air will be healthier day after day.
An air purifier is an excellent device for asthma because it operates continuously to eliminate dust and other asthma triggering shreds from the air. Air purifiers with odor-absorptive filtration are the best option to use because they can overtake triggers like fragrances, household chemical odors, and smoke. Various asthmatics stories have joined one to their home and have received significant rewards regarding their asthma and overall well-being.
Do you have pets, and someone is allergic to them? Don’t worry; an air purifier can help. Actually, most people are not allergic to cat and dog fur. They’re allergic to the dander of cats and dogs. Pet dander particles are the skin cells that cats and dogs shed. Dander is tiny and can remain in the air for a very long time. These particles also manage to go where your pet runs and hold around after your pet has left the area. Air purifiers purify these portions from the air, grabbing the dander in the filters. Activated carbon odor filters intercept pet odors and improve fresh-smelling, healthful air everywhere in your house.
Multiple Chemical Sensitivities
Multiple chemical sensitivity (MCS) is when a person is sensitive to a particular chemical fume or various chemical fumes they might find in their environment. These might hold odors from fragrances/colognes, air fresheners, or special cleaning products. Triggers might likewise be fumes off-gassed from elements used in recently built homes, new carpeting or solid flooring, or even new furniture. Outside, you might meet MCS triggers in salons, construction areas, hospitals, or any other spaces where chemicals are used constantly.
Air purifiers that have an extensive odor filtration system with the key ingredient of activated carbon are best for helping treat an MCS condition. These models have either cloth or pelletized activated carbon filters that can measure in pounds. They’re also constructed with materials created to be free of off-gassing chemicals like certain glues, solvents, and plastic housing components, so the actual unit will not contribute to your symptoms.
Dust mites are small organisms that live off organic material such as dead skin flakes or dust. Our homes live a lot of dust mites because of the perfect environment to live and breed. Dust mites are about 0.03 to 35 microns in length. These little organisms move easily through the air on the smallest air currents like those created when replacing your sheets, sweeping floors, opening curtains, or dusting furniture. Dust mites can cause respiratory problems and aggravate your allergy symptoms. Air purifiers help reduce these little parasites by removing them from the air, trapping them in the filter, and leaving behind clean, healthy air.
Not only smoke from cigarettes but also your fireplace, stove, or even a wildfire near your home can cause several air quality issues in your indoor environment. Some people may not like the scent, and others may encounter heightened allergy and asthma symptoms as a result. Smoke air purifiers eliminate smoke particles and absorb fumes using a combination of HEPA and activated carbon filtration. You are left with cleaner, fresher-smelling air that won’t trigger your symptoms.
Airborne Bacteria and Viruses
Some air machines classes can battle illness-causing airborne viruses and bacterias, create an even healthier environment throughout the flu season or any time of year. Ultraviolet air purifiers use UV germicidal lamps to kill airborne pathogens on touch while filtering the air. Other air purifiers might apply filters coated with a unique antibacterial coating to eliminate airborne germs as air passes through the filter. And still, air purifiers use sterilizing temperature to kill dangerous germs and bacteria. The study differs on the effectiveness of these models, so be sure to do your homework.
Improving Your Indoor Air Quality in General
Air purifiers aren’t just perfect solutions if you have allergies or sensitivity to a particular pollutant. They’re easily one of the best ways to increase your indoor air quality and build a healthier living space for you and your family. We suggest using an air purifier in your bedroom or in the room you spend the most time in. Daily air filtration helps eliminate potentially harmful contaminants from your air, whether the pollutants are introduced during cleaning, brought in from the outdoors, or simply stirred up with day-to-day life. There are many styles and types of air purifiers to choose from. With a little research, you will find a perfect model for you – effective, good price, looks great, etc. Plus, these appliances are naturally efficient and consume minimal energy. Most of today’s air cleaners also qualify under the Energy Star program.
So far, you know that you need an air purifier, and you know the reason you need it. What else should you know before you buy the best air purifier that fits you?
- What size air purifier Do I need
- What kind of features Do I need?
- Noise level
- Best Location for an Air Purifier
- CADR (clean air delivery rate)
- Air Change Rate
- How Much are Maintenance and Upkeep Needed
What Size Air Purifier Do I Need?
All air purifiers have coverage areas (Square feet/meters). Most of the manufacturers show this number based on max air changes per hour. For example, if the air purifier has four air changes per hour and the manufacturer says that the coverage area is 600 sq. ft. (56 sq.m.), then it means that this air purifier covers 600 sq. ft. (56 sq.m.) when using 4th fan speed. When using the 1st, 2nd, or 3rd fan speed coverage area decreases. You should remember that because bigger fan speed means that the air purifier will work louder. Some manufacturers show coverage based on an exact number of fan speed, but then they say that, for example, room coverage up to 815 sq. ft. (76 sq.m.) (based on two air changes per hour).
To know how large a coverage area you need, you have to calculate your room area. The simplest way to do this is to calculate the square footage (square meters) of the room or space you plan to use the air purifier and compare it with a unit’s recommended coverage area. This process is easy. Just multiply the length of your space in feet (meters) by the width of the space. The result is the coverage area.
If you have allergies or asthma, we recommend you go a step beyond solely considering the square foot (meter) coverage area and also consider the number of air changes per hour, or ACH, a unit will produce. ACH shows how many times an air purifier processes the entire air volume in a targeted space every hour. In other words, how many times will your air purifier clean all of the air in your bedroom in 1 hour? The more air changes per hour the air purifier delivers, the cleaner your air. Allergy and asthma sufferers and those wanting to create the cleanest indoor air possible – should look for air purifiers that can perform at least four air changes per hour.
An air purifier operates only in the room where it’s placed. For example, if you have it in the bedroom, it won’t eliminate odors in your living room, even if you have doors opened. You can place an air purifier in every room, but that’s not the most effective way. If you need to purify the air in all homes, consider a whole-house air purifier. These air purifiers connect with your HVAC system to filter the air as you heat, cool, or freshen all the places in your home. Whole-house air purifiers usually are more expensive; they require professional installation but pays-off in the long term. They are the most economical and show the best effectivity in case you need to purify the whole home. The best part about whole-house air purifiers is that you won’t need to buy and replace expensive filters. That’s a huge plus.
What Kind of Features Do You Need?
There are plenty of air purifier types on the market, starting from very simple to very advanced with many features. Many companies try to make the air purifier easier to use and save energy. Some of the features you will never use, but some of them you will love. When you shop, consider your need for these features. You don’t want to overpay for features you will never use.
We made a list of commonly added features air purifiers often have.
- Electronic/Digital Controls. Digital controls are straightforward. Electronic controls usually come together with a display. Electronic controls are more advanced and provide more features.
- Air Quality Monitor – Some air purifiers can sense the level of pollution in your environment and automatically adjust purification settings to the level needed to remove the pollutants.
- Remote Control – a great tool to operate an air purifier from a distance.
- Multiple Fan Speeds – Have your choice of various purification speeds to suit your indoor pollution level or sound preference.
- Filter Replacement Indicator – Typically, these indicators warn you when it’s time to replace your filters in the form of lights.
- Programmable Timer – Program control to turn on and off at certain times during the day to help save energy.
- Carrying Handle – Handles help you simply maneuver the air purifier if you plan to move it from place to place.
- Casters – Along with handles, casters can help make it significantly easier to move your air purifier.
All best air purifiers work with internal fans and will definitely emit some level of noise. We suggest choosing an air purifier with at least three fan speeds so you can regulate noise level. The first ones are usually weak and quiet; the highest ones are loud but powerful.
It’s important to consider where you plan to use the air purifier. Ask yourself these questions to help guide your choice of model and adjust your expectations.
Will the air purifier be in my bedroom?
This is the most popular area to use an air purifier and the most suggested. It’s also the number one area where people find high sound levels to be the most disturbing. If you are a person who cannot stand any noise while falling asleep, using an air purifier with a programmable timer that can be set to turn the unit on after you are deeply asleep is an ideal solution.
On the flip side, numerous people enjoy the “white noise” created by an air purifier because it can help produce a calming effect in the room. Either way, it’s necessary to understand that most air purifiers will make noise. It’s just a matter of finding the level of sound you’re comfortable with.
Air purifiers decibel rating, how it compares with common tones.
Most of the air purifier manufacturers write decibel (dB) amount in specifications. You can compare that with other devices you use in the home, for example, a refrigerator. That can help you to choose your air purifier. We have also made a chart for you to know the level of noise an air purifier will produce based on its decibel amount.
Decibel (dB) Equivalents
Breathing, Barely audible
Whisper, rustling leaves
Quiet rural area.
Library, bird calls (44 dB); lowest limit of urban ambient sound
Rainfall, Quiet suburb, conversation at home. Large electrical transformers at 100 feet.
Conversation in restaurant, office, background music, Air conditioning unit at 100 feet.
Passenger car at 65 mph at 25 ft (77 dB); freeway at 50 ft from pavement edge 10 a.m. (76 dB). Living room music (76 dB); radio or TV-audio.
Keep in mind; noise levels are different for each person. Even decibel results can sometimes be cheating since many things can affect the sound level, including the position of the air purifier, whether carpeting is present, the amount of furniture in the room, the distance a person is from the air cleaner while it is running, and the chosen fan speed, to name a few. There are, however, things you can do to reduce the effect of the noise an air purifier makes.
Best Location for an Air Purifier
The location is critical. If an air purifier is small and portable, then there are no problems, but it may be stressful and quite difficult to find the best place if it is heavy and big. But no worries, we will help you out.
Place the Air Purifier Closest to the Source.
If you have a smoker in your home or a smelling area, then that is a place where you should place the air purifier. The closer the air purifier is to the contaminant, the quicker it will trap the particles that give you trouble. If you appear to have a neighbor who smokes, leading to some odors seeping into your home, places the air purifier near the vent or wall where the odor is most concentrated.
Although it is tough to trap odors that are not arising in your home, by placing the air purifier where the odor is being introduced into your home, you are trapping the particles as close to the offender as possible.
Do not put an air purifier in the Corner.
You must choose a location that is not behind furniture or straight below shelves. Since most air purifiers have an intake near the front of the machine, you want it to be able to see the whole room and have access to the many airborne particles that have run rampant. This also goes for the top of the air purifier. By placing it under a shelf, the only thing that’s going to get that fresh air is the underside of your bookshelf. The rule of thumb is to keep a few clearance feet at the top, front, and sides for optimal efficiency.
Some electronics that run on similar wavelengths can make resistance, so avoid placing air purifiers near televisions, microwaves, and stereo equipment. Air purifiers are computer-friendly, though, so smaller appliances will not harm.
The air purifier wants to be alone.
Air purifiers are most productive when all the doors and windows are shut. This allows the air purifier to clean the room’s air without interference from hallways or other rooms. Since air will flow wherever there is an opening, the air purifier will pull in air from outside if doors are not fully closed.
This may seem counterintuitive because it usually opens doors and windows to let fresh air in. However, since small particles, such as dust and pollen, are difficult to see, let’s imagine that it’s snowing outdoors. Your air purifier is hard at work, clearing your room of snow, but with the windows open, more snow continues to enter the room, thus creating a snow carpet that will not disappear.
When temperatures can rise to triple figures during the summer, placing the air purifier near an open window may trap some particles as they enter the room. But please, find a safe location so that your air purifier friend does not get hurt – your air purifier does not like to be in scorching areas any more than you do.
It is Portable!
The good thing about having a portable air purifier is that you can move it from place to place throughout the day. During the daytime, putting it in the living room allows you to watch television or spend time reading on the couch while breathing in fresh, clean air. When it is time to rest, moving your air purifier to your bedroom an hour before bedtime performs the same clean atmosphere before bedtime so that you can drift to dreamland in no time.
Wherever you choose to place your air purifier, be sure to run it daily so that your air purifier buddy is keeping your home clean and happy.
CADR (clean air delivery rate)
The room’s air needs to pass through the air cleaner’s filter to clean an entire room. Air cleaners are rated by the amount of air passing through the filter. This rate is called CADR or Clean Air Delivery Rate. CADR measures the amount of particle-free air being delivered into the room. It is given in three measurements – one for pollen, tobacco smoke, and one for dust. The higher the CADR rating, the larger the room size that an air cleaner can clean.
The CADR ratings were developed by the Association of Home Appliance Manufacturers (AHAM) and are measured according to a procedure specified by ANSI/AHAM AC-1. The ratings are recognized by retailers, manufacturers, standards organizations, and government bodies such as the EPA and the Federal Trade Commission. The CADR specification does not cover Whole-house air cleaners because the measurement is performed in a standard 1,008-cubic-foot (28.5 m3) room. The size of a typical house room different airflow patterns than whole-house filters. Measurements are made with the filter running and not running, so particles that naturally fall out of the air are not counted as part of the filter’s operation. The measurement only applies to particulate matter, not to gasses.
Air change rate
The ACH (or the air change per hour rate) shows you exactly how many times the unit cleans the entire room’s air for one hour. So, if you find an air purifier that has 5 ACH, this means the air will be cleaned every twelve minutes.
You should understand that the advertised ACH rate usually means the maximum operating speed and the maximum room size. So if you like your air purifier to be quiet and do not want to run it at maximum speeds all the time, it is wise to oversize by, say, 20-40%.
How Much Maintenance and Upkeep is Needed
Regular maintenance is a significant part of having your air purifier working effectively for the long-term. Not surprisingly, there is a certain amount of cost and work required. Certainly, air purifiers will work for a time as a “set it and forget it” appliance. However, to get the most out of your investment, you’ll need to replace the filters at the manufacturer’s recommended time intervals or as needed (if you’re using a filter air purifier) or more often, depending on the level of pollution in your indoor environment. And if you choose to purchase an air sterilizer, you must be committed to performing recommended maintenance periodically to keep it running as good as new.
If you have an air purifier with a filter, you should replace the filters at the manufacturer’s recommended filter change intervals to keep the unit’s high pollutant removal level. Depending on how many air purifier filters your unit manages, you might need to change them at various times. For example, your air purifier’s HEPA filter might last 12 months while the activated carbon filter lasts six months, and the pre-filter (if equipped) lasts three months. When shopping for an air purifier, be sure to take the cost and frequency of future filter replacements into consideration. The typical filter life of all included filters is usually listed in the product specifications.
Pre-Filters, HEPA Filters, and Carbon Filters
Air purifiers that use filters to purify the air are the most popular units on the market. Pre-filters can either be washed or inexpensively replaced, depending on the model purchased.
HEPA filters are designed to remove the tiniest of pollutants from the air and catch them permanently. The HEPA filters are the most expensive filters to replace. So, keep pre-filter clean to extend HEPA filter life.
Carbon filters, made of activated carbon, work by trapping or absorbing the air’s chemicals and odors. The bigger and thicker the filter is (or the larger the amount of carbon present in the filter), the better the air will be cleaned of chemical or odorous pollutants. Regardless of the size of your carbon filter, it is important to maintain it. If your air purifier uses a thin carbon filter, it will need to be changed more often, depending on how much you run the unit and your indoor environment’s conditions. For example, tobacco smoke will saturate a carbon filter quickly. With a small amount of maintenance, carbon filters will help you get the most out of your air purifier, eliminating chemicals and odors from your indoor environment.
Remember, maintaining your air purifier will keep your unit working at top efficiency and your overall costs down. With a regular schedule and proper upkeep, you will enjoy a lifetime of clean, healthy air from your air cleaner.
A Final Word
Congratulations if you read it all. I would not get offended if you didn’t. I hope you have a much more understanding of air purifiers. What next? You can continue with my comparison charts and air purifier reviews. I have lots of valuable information on these pages. Just use the links below to read them.
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