Best Whole House Air Purifiers of 2020

Updated
Categories Air Purification
These purifiers care for your entire home — and easily too.

Keeping your house clean of all the visible dirt and dust is essential, not only for your eyes but also for your comfort. But, what about that which you can’t see?

In your home, there are countless particles floating around in the air that you breathe. Pet dander can worsen allergies and asthma, whereas cigarette smoke causes cancer. Even if you’ve never picked up a cigarette, inhaling secondhand smoke can have adverse effects.

It’s obvious then that keeping the atmosphere inside your home clean is important. One effective way of keeping the indoor air clean is by using an air purifier. These come in all sizes, so today, we’re focusing on the best whole house air purifiers.

Table of Contents

    Benefits of Whole House Air Purifiers

    Better Productivity

    If you’re spending a lot of time at home — perhaps you work from home or you’re a stay-at-home parent — clean air can help. By improving the air you breathe, you can increase your productivity (1).

    As the levels of airborne pollutants become too high indoors, you can quickly become fatigued and lethargic. You may notice that you feel sleepy most of the time, or you might experience frequent headaches. These could all be signs that the indoor air is poor.

    Improved Health

    If you suffer from either allergies or asthma, then an air purifier can have significant effects on your well-being. Indoor pollutants such as dust, dander, hair, among others, are likely to be the culprits of your symptoms (2).

    Because most air purifiers can effectively remove particles as small as 0.3 microns, they can better your symptoms. If the machine contains the right filter, even better; it can collect 99.97 percent of the particles.

    Superior Sleep

    Poor indoor air quality can interfere with your sleep (3). Dust and other particles can cause snoring and reduce the efficiency of your rest. With infants, polluted air could, in severe cases, result in sudden infant death syndrome (SIDS) (4).

    Related Reading
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    Therefore, by improving the quality of the indoor air, you can minimize any chances of developing sleep disorders. In all, you’ll get a restful night.

    How to Choose the Best Whole House Air Purifiers

    If you’re looking for a product that will keep the air in your entire home clean, here are the features to look for.

    Coverage Area

    Whole house air purifiers can cover a great distance. You can get ones that connect to your HVAC system. However, today, we focused on portable units, capable of covering a whole house.

    For each air purifier, we will state their coverage capacity. Work out how big your home is and buy accordingly. You’ll find that our picks range from 1100 to 3700 square feet.

    Keep in Mind

    For best results, choose one that can cover a few extra square feet more than your home. This will ensure you’ve got full coverage.

    Noise Level

    Having a noisy appliance is an annoyance, especially one that runs around the clock. But not all air purifiers are quiet, and the bigger models tend to produce more noise as well.

    Almost all air purifiers will tell you their noise levels from the lowest to the highest setting. If it doesn’t say in the description, scroll down to the reviews and other users will surely tell you how loud it is.

    To combat a noise issue, it’s a good idea to buy a larger unit.

    It may sound like counterintuitive advice, but often, you can operate larger units on a lower and quieter setting. In comparison, smaller machines must work at a higher speed in large homes. Unfortunately, this usually means more noise.

    Filter

    The filter is what makes the air purifier successful. If the filter is of poor quality or just doesn’t have enough filtration stages, the air won’t get purified. The best filters to look for are HEPA and activated carbon.

    HEPA filters remove the tiny pollutants from the air. Pollutants that HEPA filters can eliminate are dust, dust mites, pollen and mold.

    For odors, though, you’ll need an activated carbon filter. Among smells, these can collect chemicals, gas molecules, formaldehyde and more.

    Fortunately, most whole house air purifiers utilize both. The downside, however, is that they’ll require replacement eventually, which can be pricey.

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    Warranty

    Warranties allow you to replace broken parts or even the whole unit, should something go wrong. When manufacturers back their products with a warranty, it means that they stand by the quality. So, having a good one generally means that the product is worth its price.


    Best Whole House Air Purifier Reviews of 2020

    With our criteria above in hand, we looked at reviews, expert opinions and leading sites to find the top models out there. Then we narrowed the choices down to the five best whole house air purifiers.

    1. Alen BreatheSmart Classic Air Purifier

    Best Overall Whole House Air Purifier

    Alen BreatheSmart Classic Large Room Air Purifier, 1100 sqft. Big Coverage Area, True HEPA Filter for Allergies, Pollen, Dust, Dander and Fur in White
    Check Price

    The BreatheSmart Classic air purifier from Alen is one of the best-reviewed products we found. It has received outstanding praise from homeowners suffering from allergies, stating that it helped ease the symptoms. So it’s well worth our top spot.

    With a modern design and multiple color options, it suits any home and decor. But despite the beautiful unit, it’s quite subtle. It also features patented technology to ensure whisper-quiet operation.

    This bad boy boasts several HEPA filter layers. Unsurprisingly, it works successfully at removing irritants, odors and dust from the atmosphere and surfaces. Then while you sleep, it emits a soothing noise for a restful night.

    Why We Love It

    Unique HEPA Filter

    The BreatheSmart air purifier works specifically to ease symptoms of allergies. To do this, it features a unique HEPA PURE filter.

    The filter consists of several HEPA layers. Each layer catches particles such as pollen, pet dander and hair, dust and dust mites. Next, the unit sieves the air through the pre-filter, capturing hair and larger particles. And then, the next layers trap airborne irritants.

    Full Coverage

    The machine is very powerful and capable of covering up to 1100 square feet. It’s excellent for large family rooms or open-concept spaces. The BreatheSmart unit will get to work every 30 minutes to keep your house fresh and clean.

    Ultra-Quiet

    Whether you use it during the night or you’re sensitive to sounds, the BreatheSmart will not disappoint you. It features Alen’s WhisperMax technology, ensuring a quiet operation. The sound level ranges between 41.5 and 56 decibels, depending on which fan speed you’re using.

    What’s more, while on turbo-speed, the unit emits a “pink noise” — a lower tone than white noise. It resembles heavy rainfall and is quite soothing.

    Beautiful Design

    You can choose between several front panel designs, suitable for various home decors. These include brushed bronze, brushed stainless, graphite, gold champagne, and oak. You’ll also find maple, rosewood, weathered gray and white designs.

    Keep In Mind

    It Emits a Chemical Odor

    Some users mentioned that during the first few uses, the machine would emit a chemical odor. Fortunately, after a few hours of running, it seemed to disappear.

    Additional Specs

    Unit measurements26.75 inches by 17.75 inches by 10 inches
    Stages of filtrationMultiple
    Power consumption105 watts
    Room coverage1100 square feet
    WarrantyLifetime warranty

    2. Coway Airmega 400 Smart Air Purifier

    Best Smart Whole House Air Purifier

    Coway Airmega 400 Smart Air Purifier with 1,560 sq. ft. Coverage
    Check Price

    The Airmega 400 from Coway is an excellent addition to the modern home. With integrated smart technology, the unit can automatically adjust to its surrounding environment. Reviewers praise how well it works at capturing pollutants from the air.

    Featuring two filters, it can separate up to 99.97 percent of particles from the air, leaving your home refreshed. You can keep track of its progress through the sleek LED ring indicator, displaying the quality of the air. By doing two air-sweeps per hour, the machine can clean your home in no time.

    With a modern design and powerful suction, it’s well worth a second look.

    Why We Love It

    Smart Technology and Air Monitoring

    Included with the Coway Airmega is its Smart Mode feature. This enables the unit to adapt its speed based on the surrounding environment automatically. Another benefit is energy efficiency — if high speed isn’t necessary, it will save you on your energy bill.

    The unit is suited with pollution sensors, which communicate the indoor air quality to the Smart Mode. On the machine, you’ll see a vibrant LED ring that will let you know the state of the indoor air every minute. It changes color from blue to red.

    Powerful Suction

    With a double-sided suction, the Coway Airmega is quite powerful. It draws in air from two sides, pushing it through the filters and out through the top. Before leaving the unit, the air goes through two filters — a pre-filter and a HEPA and activated carbon layer.

    The pre-filter is easy to clean and doesn’t require replacement — it works to capture fur and dust. The next layer is the Max2 filter, which is a combination of activated carbon and True HEPA filters. This combo will work to swatch all the microscopic particles.

    Filter Indicator

    Once the filter requires a replacement, the Filter Indicator will tell you. The indicator lights up clearly and well in advance for you to change the layers. It can also notify you when it’s time to clean the pre-filter.

    Great Design

    The design of the Coway Airmega is truly eye-catching. It’s modern with subtle details and is available in white or black.

    Keep In Mind

    Expensive Filters

    A few users noted that although the unit is great, the Max2 filters are quite expensive to replace.

    Additional Specs

    Unit measurements14.8 inches by 14.8 inches by 22.8 inches
    Stages of filtrationTwo
    Power consumption66 watts
    Room coverage1560 square feet
    WarrantyFive-year warranty

    3. Medify AirMA-112

    Best Whole House Air Purifier for Large Homes

    Medify Air MA-112 Super CADR 950 H13 True HEPA Air Purifier | Covers 2,400 sq ft - Allergies, Smog, Odors, Smoke, Pets Dander, Dust | Dual Intake with 2 Filters
    Check Price

    With a modern design and powerful suction, the Medify Air MA-112 is fantastic. It has received stellar reviews from users, praising power and silence.

    The unit is one of the most powerful air purifiers on our list today. It can cover a 3700 square-foot home in one hour. It draws in air from two sides, while distributing it in a 360-degree radius.

    Suited with a True HEPA filter, the machine is medical-grade, efficient at removing even the tiniest particles. It features a digital display, giving you an idea of the indoor air quality both in colors and numbers.

    Why We Love It

    Powerful Cleaning

    The Medify air purifier is incredibly powerful. It can clean a 3700 square-foot area in an hour and a 2500 square-foot room in 30 minutes. Its effectiveness is mainly due to the high CADR rating of its filter, which is at 950.

    It draws in the polluted air and then distributes the clean air in multiple directions. With four fan speeds, you can easily choose one to suit your needs.

    Automatic Quality Updates

    Included in this unit is an air quality indicator, which changes color to display improvements. In addition to colors, the machine tells you the Particle Matter (PM) of the air, indicated by a digital number readout. A low number means less particle pollution present.

    Then the fan adjusts automatically for when higher or lower speeds are necessary. You can also regulate it yourself if you prefer, by selecting a fan speed.

    Medical-Grade Filtration

    By using four levels of filtration, the Medify Air has a medical-grade performance. It removes everything from pet dander, allergens to larger fibers. The machine includes a True HEPA filter, which effectively removes 99.97 percent of particles as small as 0.3 microns.

    Then there’s the activated carbon filter, which contains carbon pellets, working to remove odors and formaldehyde. As an optional filter, you can choose to add an Anion generator that produces negative ions, refreshing the outgoing air.

    Hidden Wheels and Child Lock

    To prevent small fingers from meddling with the settings, the unit allows you to lock it. Then underneath are hidden wheels only grown-ups can find and operate, making it easier to move.

    Keep In Mind

    Large Unit

    A few users said that the unit is very large and doesn’t blend in well with the surroundings.

    Additional Specs

    Unit measurements13 inches by 15 inches by 28 inches
    Stages of filtrationFour
    Power consumptionN/A
    Room coverage3700 square feet
    WarrantyLifetime warranty

    4. IQAir Medical-Grade Air HEPA Filter

    Best Filter

    IQAir [HealthPro Plus Air Purifier] Medical-Grade Air [HyperHEPA Filter] for Allergies, Pets, Asthma, Odors, Smoke, Pollen, Dust; Swiss Made
    Check Price

    If you’re suffering from allergies or asthma, then the IQAir will surely suffice. It features one of the finest HEPA filters, enabling the unit to collect ultra-fine particles, known for causing symptoms.

    This efficient machine is suited with a strong fan and maintenance-free motor, distributing the filtered air in several directions. It works to eliminate drafts as well as escaping unfiltered air.

    You can control all the settings via the included remote. The machine will notify you of any changes.

    Why We Love It

    Super Filter

    The IQAir includes a super-fine filter, dubbed as HyperHEPA filtration technology. It’s an exclusive version of HEPA, designed to collect particles as small as 0.003 microns. Through independent testing, IQAir found that it successfully stopped 99.5 percent of ultra-fine particles known for causing viruses.

    Minimal Air Leakage

    To prevent unfiltered air from escaping, the IQAir includes a triple-sealing technology. It ensures that almost all the air entering the unit gets filtered before exiting. The system consists of a 3D UltraSeal, which are individual seals providing an airtight closure.

    Powerful Fan

    Included with the IQAir is a New Edition fan as well as a maintenance-free motor. This combo can deliver air up to 780 cubic feet per minute. It’s also energy efficient — depending on which setting you use, it draws between 27 to 215 watts.

    Then the EvenFlow diffuser delivers air in a 320-degree radius. It’s ultra-quiet and won’t create a draft.

    Remote Control

    You can control the unit using the included remote. With that, you can monitor the filter, program the settings and much more.

    Keep In Mind

    Creates Bad Smells

    Some reviewers noted that when you first use the unit, it emits a bad odor. However, a few also said that the company was quick to respond and sent out a new filter to prevent the smell.

    Additional Specs

    Unit measurements16 inches by 15 inches by 28 inches
    Stages of filtrationMultiple
    Power consumption215 watts
    Room coverage1125 square feet
    WarrantyOne year warranty, 10 years if you register

    5. PureAir 3000 - Whole Home Air Purifier

    Best Whole House Air Purifier for Mold and Mildew

    GreenTech Environmental pureAir 3000 - Whole Home Advanced Air Purifier System
    Check Price

    If your home is prone to mold, mildew and other harmful pathogens, the PureAir 3000 is fantastic. Users praise the way it helped refresh their homes.

    The PureAir 3000 utilizes a special method for successfully removing all harmful particles. It’s very powerful and easy to use. Included is a user’s manual as well as a remote to control it.

    However, it does use ionization so if you have asthma, use it with caution.

    Why We Love It

    Removes Mold and Other Harmful Pollutants

    This device utilizes something called photocatalytic oxidation. The process works effectively at breaking down odors as well as mold, bacteria and other harmful pollutants present in the air. PureAir claims that it can successfully reduce such dangerous pathogens by 99 percent in just 24 hours.

    Easy to Use

    The unit is very easy to set up and use. It includes thorough instructions both for set up, use as well as maintenance.

    Refreshens the Air

    While removing almost all the pollutants from indoor air, the PureAir 3000 will also refresh it. By utilizing a method resembling that of nature, it leaves the atmosphere crisp and fresh.

    Keep In Mind

    Emits Odor

    A few users complained that the unit emits an odor. Thankfully, it seems to disappear after a few uses.

    Additional Specs

    Unit measurements12 inches by 9 inches by 12.25 inches
    Stages of filtrationMultiple
    Power consumptionN/A
    Room coverage3000 square feet
    WarrantyOne year warranty

    Detailed Comparison Chart

    ProductBestUnit measurementsStages of filtrationPower consumptionRoom coverageWarranty
    Alen BreatheSmart Air PurifierOverall26.75″ x 17.75″ x 10″Multiple105 W1100 sq ftLifetime
    Coway Airmega 400 Air Purifier Smart Air Purifier14.8″ x 14.8″ x 22.8″Two66 W1560 sq ft5-year
    Medify AirMA-112Large Homes13″ x 15″ x 28″FourN/A3700 sq ftLifetime
    IQAir Medical-Grade HEPA FilterFilter16″ x 15″ x 28″Multiple215 W1125 sq ft1 year
    PureAir 3000 Air Purifier Mold & Mildew12″ x 9″ x 12.25″MultipleN/A3000 sq ft1 year
    Jump to the Full Whole House Air Purifier Reviews

    Cleaner Air for a Happier Home

    Having the best whole house air purifier will benefit you in many ways, mainly if you suffer from allergies or asthma. They work to clean the atmosphere on a large scale — some as much as 3700 square feet.

    While looking for the best whole house air purifier, make sure it can cover your entire home. Then verify that it won’t be too loud and includes the right filters. Warranties are a great factor to include as well, although they aren’t necessary.

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    About the Author

    Matthew Sullivan

    Matthew has been involved in the HVAC industry for the last 10+ years and has extensive experience with installation, servicing, and troubleshooting. With a background in engineering, Matthew has always found great pleasure in taking things apart and learning how to put them back together.
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