Air Purifiers for Allergies
5 min read
Purchasing an air purifier to help with allergies can be confusing and a little daunting. In this guide, we’ll help you understand what an air purifier does, the best air purifier for your room size, what allergy symptoms can be improved with an air purifier, how to get the most relief from your allergies with an air purifier, along with some air purifier recommendations.
In This Article
- What Does an Air Purifier Do?
- Do I Need an Air Purifier?
- Allergies and the Air We Breath
- Is It a Cold or Allergies?
- How Air Purifiers Help Allergies
- Why HEPA is Important?
- What is a Micron and Why is it Important?
- What is Activated Carbon and What Does It Do in Air Purifiers?
- What is UV-C Light and What Does It Do in Air Purifiers?
- Room Size and Why It’s Important
- Air Purifiers By Room
What Does an Air Purifier Do?
Air purifiers do just as the name implies – they purify the air. Devices designed for home use are portable and run on electricity. When plugged in and turned on, an internal fan pulls unwanted particles out of the air, traps them in a filter and sends purified air back into the room. This filtration process repeats itself multiple times an hour, improving your indoor air quality.
Do I Need an Air Purifier?
Whether to buy an air purifier for your home is certainly a personal choice. If no one in your home smokes or you clean your house regularly, you may not think you need one. But it’s important to know, the Environmental Protection Agency (EPA) says air pollutants inside our home are often two to five times higher than the pollutant levels outside. These pollutants consist of particles like dust, mold, pet dander and pollen resulting in inside air that can be worse for your lungs and body than the air outside.
Allergies and the Air We Breath
One of the main reasons people decide to buy an air purifier is because of triggers that lead to allergies. Allergies happen when a foreign substance enters your body (like dust, pollen or pet dander) and your immune system determines it to be harmful – even though it isn’t – and produces antibodies to fight it. The result can cause inflammation in your sinuses and airways and result in coughing, hives, itchy eyes, rashes, a runny nose, a scratchy throat and sneezing. The severity of allergies is different for each person and it can range from a minor nuisance to a life-threatening issue.
The Asthma and Allergy Foundation of America (AAFA) say allergies are the sixth leading cause of chronic illness in the U.S. and affect more than 50 million Americans every year. https://airpurifiers.com/ten-worst-states-for-allergies/ Spring and fall seem to be the seasons when allergies are the worst, but many people deal with the symptoms year-round. The most common allergy triggers ((https://airpurifiers.com/type-of-allergies/ (Research Guide) are:
Cockroaches can be found all over the world since they adapt easily to different environments. They don’t like light and are most active at night. Allergies can be triggered by a protein from the cockroach, as well as its saliva and waste.
Dust mites are tiny, eight-legged arthropods that look like white bugs under a microscope. They thrive in mild temperatures and high humidity, feed on flakes of dead human skin and are the most common trigger for asthma and year-round allergies.
Grass pollen spreads easily with the help of the wind and causes the most trouble from April to June. Grasses are separated into two classes – northern and southern. Fescue, Johnson, Kentucky Blue, Rye and Timothy are all common northern grasses. Bahia and Bermuda are common southern grasses.
Mold grows in areas with plenty of moisture and oxygen. It produces tiny, reproductive cells called spores, that are small enough to float in the air. Mold spores are plentiful in areas that have had a lot of rain or have bouts of high humidity and can spread in dry, windy weather or with fog or dew. Mold spore allergies are most common from July to early fall.
Any animal with fur or feathers sheds dander. The dander is made up of tiny, dead skin cells that a pet sheds. A pet dander allergy can also be triggered by dried saliva or urine.
We often think that large cities are the only ones that deal with air pollution, but it’s a problem to some degree everywhere. Most air pollution is human-made. It’s largely caused by emissions from cars, factories, planes, and even aerosol cans.
Rodents, like rats and mice, have a protein in their urine that can cause allergy problems. When the urine dries, the protein becomes airborne on dust particles. It can be a big issue for people with asthma.
Tree pollen is a problem on warm, windy days, especially in early spring. Pollen from trees is very fine and powdery and comes most often from ash, aspen, beech, birch, box elder, cedar, cottonwood, elm, hickory, maple, mountain elder, mulberry, oak, pine, pecan, and willow trees.
Weed pollen is abundant on dry, hot, windy days – generally late summer to early fall. Ragweed is the most common and troublesome of the weed pollens. English Plantain, Lamb’s Quarters, Redroot Pigweed, Russian Thistle, and Sagebrush are also weeds that cause allergy problems.
Is It a Cold or Allergies?
Since allergies and colds have similar symptoms, it can be hard to tell the difference. Allergies are caused by your body’s overreaction to a foreign substance that it thinks is harmful when it’s really not. You can’t catch allergies from another person and they are usually caused by one of the triggers listed above. A cold is caused by a virus, and is contagious. It is spread when an infected person coughs or sneezes and those droplets enter the air you breathe or land on a surface you touch.
SYMPTOMS COLD ALLERGIES
- Aches/Pains Sometimes No
- Cough Yes Sometimes
- Fever Sometimes No
- Itchy Eyes No Yes
- Postnasal Drip No Yes
- Runny Nose Yes Yes
- Sneezing Yes Yes
- Sore Throat Yes No
- Stuffy Nose Yes Yes
- Tiredness Yes Yes
- Watery Eyes Sometimes Yes
- Wheezing No Yes
Aside from these symptoms, there are other factors that can help you determine if you’re experiencing allergies or are sick with a cold. Your mucus will be clear or watery with allergies and thick or discolored with a cold. Colds often last between five and seven days and your symptoms improve. Allergies can last for weeks and your symptoms will stay the same.
Colds can be treated with rest and over-the-counter cold remedies and pain relievers. But colds and viruses can also turn into more serious illnesses like bronchitis, pneumonia or a sinus infection. Allergies can be treated with antihistamines, over-the-counter decongestants and nasal steroid sprays.
How Air Purifiers Help Allergies
Most Americans spend as much as 90 percent of their time indoors, making it important to control what you’re breathing inside your home. When the air inside is left unpurified, irritants responsible for allergies are left to float around causing breathing problems and lung irritation.
Air purifiers are proven to work in reducing contaminants in the air that cause allergy problems. They are designed to pull impurities out of the air, forcing out cleaner air. Irritants that cause allergies are small, and most can’t be seen with the naked eye. So, it isn’t like you can clean it all away. Most air purifiers have more than one filtration stage, trapping dust, pollen, pet dander and other allergy causes so the air is cleaner and more breathable.
Depending on what you’re looking for, you can find an air purifier to fit your needs. Air purifiers are equipped with all kinds of features, but it’s important to make sure they work with a HEPA filter.
Why HEPA is Important?
HEPA filters have become the gold standard for filtration in the air purifier industry. Don’t purchase an air purifier that doesn’t have one. HEPA stands for high-efficiency particulate air and is the most important and effective part of the filtration process. HEPA filters are a pleated mechanical filter with layers of synthetic or glass fibers arranged in an accordion shape that can trap and remove at least 99.97% of airborne pollutants that are 0.3 microns or larger.
Harmful particles like dust and pollen that trigger allergies are forced through the fine mesh trapping and keeping them from re-entering the air. When buying an air purifier, look for ‘true HEPA’ in the description of the filter. If it says ‘HEPA-like’ the filter doesn’t meet the EPA standards for filtration and won’t perform like you need it to. If an air purifier has a true HEPA filter then it has been tested and approved by the Institute of Environmental Sciences and Technology. The non-profit, technical society helps professionals work together to create best practices in controlled environments.
What is a Micron and Why is it Important?
Companies that make air purifiers understand how important it is to trap the smallest of particles in order to be an effective tool in the fight against allergies. Small particles are measured in microns. A micron is a unit of length that is 1,000 times smaller than a millimeter. Airborne particles are usually measured and described in microns and the smaller and finer the particle, the more concerning it can be for your health. To give some perspective on size, a single strand of human hair is around 70 microns. The naked eye can only see debris or dust around 25 microns. Particles floating in the air that cause allergy problems are generally much smaller, and the smaller they are the easier it is for them to stay afloat and travel.
- Bacteria can measure 0.3 to 60 microns
- Household dust can measure 0.5 to 100 microns
- Mold spores can measure from 3 to 40 microns
- Pet dander can measure from 2.5 to 10 microns
- Pollen can measure from 10 to 1,000 microns
- Tobacco smoke can measure to 0.01 to 4 microns
- Viruses can measure 0.005 to 0.3 microns
The smaller the particle, the easier it is for you to breathe in. Depending on the size, some may be caught in your nose or throat, but others may be able to travel through your respiratory system to the deepest part of your lungs resulting in allergy or asthma attacks.
What is Activated Carbon and What Does It Do in Air Purifiers?
In addition to HEPA, many air purifiers are equipped with other types of filters to help take impurities out of the air. You may have heard of activated carbon (also known as activated charcoal) and wondered what it is and what it does. Small charcoal pellets are heated to high temperatures to make them extremely porous.
HEPA filters will not remove odors or gasses from the air, but the porous nature of activated carbon allows it to absorb and eliminate them from your home. Activated carbon filters don’t work alone, but in addition to a main HEPA filter.
What is UV-C Light and What Does It Do in Air Purifiers?
UV-C or ultraviolet light can destroy cells and render them ineffective. This technology is used in some air purifiers, but it’s not a stand-alone purification process. It works in conjunction with HEPA filters. Once the air passes through the HEPA filter, it enters a small internal chamber where the UV-C light is. The light will kill things like mold, mildew, bacteria and viruses if there is direct and prolonged exposure.
It’s important to note that UV-C light can emit ozone and ozone is dangerous to breathe in – even in small amounts.
Room Size and Why It’s Important
Once you decide an air purifier would be beneficial in your home, the next important decision is what room it will go in. Some people opt for the family room, since it sees the most traffic and can benefit everyone. Others decide the bedroom is the perfect spot since allergies have a tendency to flare up at night. Whatever room you choose, you will need to know the square footage of it before you buy an air purifier.
All air purifiers are designed to cover a specific amount of square footage. If you don’t know the size, you can determine the square footage by measuring the room and then multiplying the length times the width. For example, if your room measures 15 feet by 20 feet, the square footage is 300.
It’s important to know, the capacity rating for home use air purifiers is based on a room with 8 foot ceilings. If your ceilings are higher, you’ll need to take that into account.
What is CADR?
CADR is a routinely used acronym in the air purifier industry. It stands for Clean Air Delivery Rate and it’s a standardized method used to measure how well an air purifier can remove dust, pollen and smoke over the course of an hour. A higher CADR will indicate better and faster removal of particles in the air. So, it’s important to pay attention to the CADR on any air purifier you are considering.
Where Do I Place An Air Purifier?
Once you choose the room it will go in, the next question is where do I place an air purifier? You certainly want to choose the area where it can be the most effective, but out of the way. Here are a few things to keep in mind:
- Don’t put it against the wall. For an air purifier to work properly it shouldn’t be up against anything. So, move it out where it will have a free flow of air from all sides. A foot of space on all sides is ideal.
● Don’t place it behind curtains or furniture. Putting the air purifier behind something makes it ineffective in its purpose.
- Placing it near a doorway is a good option. A door that is opened and closed often will result in a lot of airborne particles. An air purifier can help capture them out of the air.
- If you can, place it off the ground. An air purifier three to five feet off the ground is ideal. Irritants that cause allergies are floating in the air and the closer you can put the air purifier to the pollutants, the better.
How Many Air Purifiers Do I Need?
Ideally, you would want an air purifier in every room of your home to ensure you are breathing the cleanest air possible. But cost and space both make that nearly impossible to accomplish. Prioritize your rooms to determine which areas of your home are most important and help you determine how many air purifiers you need.
Consider the rooms where you spend the most amount of time – the family living room or den, or your bedroom. (If you have an allergy sufferer in the family – that person’s bedroom may be the best room in the house.) Some air purifiers have wheels making them easier to move around. In that case, you can move the unit in between rooms based on where you are during any part of the day.
Air Purifiers By Room
Living Room Allergies
The living room is easily the place where we spend the most time together as a family. It’s also a heavily-trafficked area, with doors opening and closing and people and pets coming in and out. So, it stands to reason that it’s also an area that has a large amount of particle pollution in the air. An air purifier will help remove the allergy triggers from your living room, making it easier to breathe and enjoy your family time.
What Will an Air Purifier in the Living Room Help With?
- Pollen – Pollen can be a large reason why allergies are so bad, especially in the spring. Trees, grasses and weeds release tiny pollen grains that can find their way into our home and our bodies. The result can be a miserable allergy reaction.
- Dust – It doesn’t matter how much you clean, you’ll never get rid of all the dust. It comes from a variety of sources – everything from dirt to skin cells to fabric fibers – and it will collect in all areas of your home. Breathing it in can result in coughing, sneezing, eye irritation and asthma attacks.
- Pet Dander – We love our four-legged family members, but unfortunately, pets shed dander which can become an allergy issue. In fact, it’s one of the most common allergens in the U.S. Pet dander can cause congestion, chest tightness, a runny nose, sneezing and wheezing.
- Asthma – More than five million children in the U.S. have asthma – making it the leading chronic disease for kids. Around 20 million adults suffer from asthma. It causes your airways to swell, become inflamed and narrow – making it hard to breathe. It can be triggered by dust, pet dander or pollen.
- Mold – Mold occurs naturally, and can be found almost everywhere. It is beneficial to our environment, but can cause havoc on your respiratory system. Since mold spores are so tiny, they can easily travel in the air, making them easy to breathe in and result in allergy symptoms.
Here are our top recommendations for air purifiers for your living room:
- Alen BreatheSmart 75i True HEPA Air Purifier – This device can clean the air in a room up to 1300 square feet, is Energy Star certified and whisper quiet. It has a medical grade HEPA filter and is equipped with sensors that detect airborne irritants in real-time and adjust to rid the room of them.
- BlueAir Classic 605 – This Wi-Fi-enabled unit covers up to 775 square feet. It’s whisper quiet, and is equipped with HEPA filtration and activated carbon to get rid of odors. It is also equipped with a child lock to keep children safe.
- BlueAir HealthProtect 7470i – This Blueair model covers up to 418 square feet. Instead of HEPA filters, it uses electrostatic and mechanical technology for filtration. It is equipped with GermShield technology to kill viruses and bacteria. The unit is quiet and can be controlled remotely with Alexa or the Blueair app.
- IQAir HealthPro Plus – This model is great for large spaces – covering up to 1125 square feet. The unit works on a three-stage filtration system and traps particles as small as 0.003 microns – a much finer particle size than regular HEPA filters.
- Bissell Air320 Max Smart Wi-Fi Air Purifier – As the name implies, this air purifier has Wi-Fi capabilities and covers 1286 square feet. It’s equipped with three stages of filtration – including a HEPA and activated carbon filter. The unit can monitor air quality and adjust accordingly and can be controlled through the Bissell app.
- Coway AirMega 400 – The AirMega 400 covers up to 1560 square feet, has three stages of filtration and is equipped with a pollution sensor. It is energy efficient, has five fan speeds and comes with a timer you can set to determine how long it runs.
- Austin Air HealthMate Plus – This device has four stages of filtration and covers up to 700 square feet. It has wheels to make it easy to move around and comes with a 30-day, money back guarantee.
- Airpura V600 Air Purifier – This air purifier is made for extra-large spaces – covering up to 2000 square feet. It’s equipped with a HEPA and activated carbon filter and runs on a 360-degree purification process.
Allergy triggers like pet dander and dust mites tend to settle in pillows and bedding, accumulate and often go undisturbed until we go to bed at night. Breathing them in can cause sneezing, a stuffy or runny nose, itchy, watery eyes and coughing and result in restless nights. It’s the reason many people decide to put an air purifier in the bedroom.
When we sleep, we experience our deepest breathing and if you have allergies – then peaceful, restful sleep can be elusive. You may experience insomnia, waking up multiple times during the night and being sleepy during the day.
What Will an Air Purifier in My Bedroom Help With?
- Sleep – Research has shown a direct connection between particle pollution and sleep disruption. It stands to reason if you’re breathing in things that can make you sneeze or cough, it will wake you up. With an air purifier, you will fall asleep faster and reach a deeper sleep. Some air purifiers, like the Alen BreatheSmart 45i, have been independently tested, certified by SleepScore.com and proven to help you sleep better.
- Sleep Apnea – Scientists have been studying a connection between air pollution and sleep-related breathing disorders. Researchers do know that airborne irritants can aggravate sleep apnea – a condition that causes you to stop breathing briefly multiple times a night while you’re sleeping. A 2010 government study ((https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2949406/)) showed air pollution can reduce sleep quality, increase your risk of sleep apnea and lower your blood oxygen levels.
- Snoring – Oftentimes, snoring can be caused by allergy pollutants floating in the air. When we breathe in irritants during sleep, it can cause our throat and nasal passages to become inflamed – and the result is snoring.
Here are our top recommendations for air purifiers for your bedroom:
- Alen BreatheSmart 45i Air Purifier – This device covers up to 800 square feet every 30 minutes and runs with a true HEPA filter. It’s a quiet, energy efficient machine that can give you real-time feedback on the air quality in the room. It’s also SleepScore.com certified, which means it has been proven to help you sleep.
- Samsung Cube – This unit is good for a smaller space – it covers up to 310 square feet. It uses a true HEPA filter, along with two other stages of filtration. The Cube is whisper quiet, equipped with a child lock and can be controlled through an app.
- Alen BreatheSmart Flex – The Flex is whisper quiet and has a built-in sleep mode. It’s energy efficient, runs with a true HEPA filter and covers up to 700 square feet every 30 minutes.
- Honeywell InSight Air Purifier – HPA5300B – This unit can cover up to 500 square feet and has an Energy Star rating. It’s equipped with an air quality monitor for real-time feedback and will automatically adjust based on what’s floating around in the air. It has a HEPA filter and activated carbon filter to reduce odors.
- LeVoit Vital 100 True HEPA Air Purifier – This air purifier is lightweight and budget-friendly. It is energy efficient, covers up to 300 square feet and has three stages of filtration.
- Rabbit Air BioGS 2.0 Ultra Quiet HEPA Air Purifier -The Rabbit Air BioGS 2.0 has four stages of filtration, all while covering up to 550 square feet every 30 minutes. The unit is whisper quiet and has a particle and odor sensor that adjusts automatically to clean whatever is in the air.
- Coway Airmega AP-1512HHS Air Purifier – The AirMega has three stages of filtration and covers up to 325 square feet. It comes equipped with pollution sensors that can adjust based on what’s floating in the air.
Baby Room Allergies
Babies can develop allergies early in their life, but it’s hard to know what’s causing the problem, since they can’t communicate yet and tell you what’s hurting or bothering them. Things that are floating around in the air of your home may not affect you, but could be allergy triggers for your little one. An air purifier
(https://airpurifiers.com/air-purifiers-for-baby-rooms/) can help clear your baby’s room of airborne irritants that may be causing problems.
- Air purifiers may be especially important for babies who are born prematurely. Premature babies often have under-developed organs, and clearing the air of contamination can help their lungs fully develop in a healthy way.
- If your family has a history of asthma or other respiratory illnesses, an air purifier in your baby’s room is a good idea. Children have a higher risk of developing asthma if they have a parent who is asthmatic.
- If your little one has started to show signs of eczema, an air purifier will be an important addition to his or her room. The skin condition is often linked to allergies and asthma. Taking the irritants out of the air will help your little one stay symptom-free from eczema.
- In addition to helping your baby breathe cleaner air, an air purifier can also help your little one sleep better. Even the quietest devices produce a small amount of noise. The gentle humming reminds babies of the sound in the womb and can help them fall asleep and stay asleep.
Here are our top recommendations for air purifiers in your baby’s room:
- Alen BreatheSmart 45i – This device covers up to 800 square feet and has four stages of filtration, including a carbon filter for odors. It’s also SleepScore.com certified which means it has been proven to help you sleep.
- Rabbit Air BioGS 2.0 – This quiet machine covers up to 625 square feet and has four stages of filtration, including a carbon filter for odors. It is energy efficient and also has a child-proof feature to help keep your little one safe.
- Dyson HP07 Air Purifier – This lightweight air purifier is multi-functional – it can double as a space heater as well. It can be controlled remotely, cleans up to 290 square feet and is equipped with a HEPA filter for maximum filtration.
- Whirlpool WPPRO2000B Whispure – This whisper quiet unit cleans up to 508 square feet – so it’s a nice choice for larger rooms. It’s Energy Star-rated, has an activated charcoal filter for odors and a built-in sensor to detect VOCs.
- Blueair 311 Air Purifier – This Blueair model is lightweight and covers up to 388 square feet. It’s energy efficient, quiet and automatically adjusts to purify the air.
The bathrooms in our home are ripe for all sorts of allergy triggers. In addition to the odors that can emit from the room, all the moisture that can accumulate from running water can cause mold and mildew build-up. Wiping down wet surfaces and running the fan while you’re showering is important to filter out the moisture. But the best step you can take to stop mold and mildew is by placing an air purifier in the bathroom
What Can An Air Purifier in My Bathroom Help With?
- Mold – Mold is a common fungus that occurs naturally when moisture is present. When you leave surfaces in the bathroom wet, mildew begins to form. If left too long, mildew can develop into mold spores that rapidly multiply. Because of their small size, mold spores can be airborne resulting in a problem on your bathroom surfaces and in the air of your home.
Here are our top recommendations for bathroom air purifiers:
- Alen BreatheSmart 45i – This device is lightweight and cleans up to 800 square feet. It is highly effective in pulling mold spores out of the air and can also kill airborne bacteria, germs and viruses.
- Rabbit Air BioGS 2.0 – The Rabbit Air BioGS 2.0 is small, quiet and cleans up to 625 square feet twice an hour. It’s Energy Star-rated, has four stages of filtration, and is equipped with an activated carbon filter to help remove odors.
- Austin Air Bedroom Machine Air Purifier – Don’t let the name fool you, this machine is also a great fit for a bathroom. Since it has wheels, it can be rolled and moved easily between rooms. It’s equipped with a HEPA and activated carbon filter.
- Coway Airmega AP-1512HHS HEPA Air Purifier – This small, energy efficient device covers up to 325 square feet and is equipped with a three filtration system. It is also compatible with Alexa.
- Sharp Plasmacluster Ion Air Purifier – This super lightweight device covers up to 259 square feet. It has three stages of filtration, including an activated carbon filter.
The attached garages of our homes are often overlooked when it comes to concern about what’s inside of it. We use them as storage for vehicles, lawn equipment and tools, but they’re also full of paints, chemicals, fluids, and gas to run equipment. All of those things can be a major source of contamination that can seep into your home flaring up allergies or other breathing problems.
What Can An Air Purifier in My Garage Help With?
- Pollution – Opening and closing the garage doors can allow all kinds of things from outside to get in. But it’s not just the general pollution from outside that can cause allergy and breathing problems. Starting up the lawnmower, the leaf blower or the car can create fumes that will linger inside your garage, and potentially enter your home.
- Dust – The garage is one place in the home that isn’t cleaned on a regular basis. It’s full of dust. The dust gets tracked in on feet, blown in by the wind or brought in on cars. Dust can collect from pets and even from the normal wear and tear of your concrete floor. Dust from the garage can be a huge problem for anyone with allergies – just moving some things around can cause coughing, sneezing and watery eyes.
- VOCs – VOC stands for volatile organic compounds. They are odorless chemicals in the air that are emitted from all types of human-made materials. Things like paint, varnishes, caulks and adhesives, flooring, composite wood products, upholstery and foam can all contain VOCs. Some air fresheners, cleaning products and even cosmetics can give off VOCs. Prolonged exposure to VOC emissions can cause problems with your breathing and lungs.
- MCS – MCS stands for Multiple Chemical Sensitivity and is a medical diagnosis. People who experience MCS develop severe reactions to airborne chemicals and odors. Everything from a strong smell of gas to a cooking odor can trigger a reaction.
The best way to keep the air inside your garage as clean as possible is with an air purifier. Here are our top recommendations:((https://airpurifiers.com/volatile-organic-compound-voc-air-purifiers-for-your-garage/))
- IQAir HealthPro – This air purifier is designed to purify the air in large spaces up to 1125 square feet, while also filtering harmful gases and chemicals.
- Austin Air Healthmate Plus – This unit will cover up to 1500 square feet and is equipped with an activated carbon filter to help with odors. It specializes in reducing airborne particles, chemicals and gases.
- AllerAir Air Purifier 6000 DXS – This air purifier covers an extra-large space – up to 1800 square feet. It’s equipped with a large activated carbon filter, and also comes with a tar-trapping filter that pulls tar particles out of the air.
- Airpura V600 Specific Chemicals Filtration Air Purifier – This device can cover up to 2000 square feet, so it’s more than capable of handling large garages. It’s equipped with a HEPA and activated carbon filter to remove particles, chemicals and gases.
- Alen BreatheSmart 75i Air Purifier – The BreatheSmart 75i has five fan speeds that can clean up to 1300 square feet. It’s equipped with two HEPA filters to remove airborne germs, fungi and other particles.