Top 10 Best Large Room Air Purifiers

The Medify MA-40W is hands down the only medical grade air purifier on the market that doesn’t cost you a fortune. With filtration standards better than that of a True HEPA filter, this model is in true sense, a cost-effective option for people with aggravated allergies or sensitive respiratory tract conditions. The preliminary filter is an augmented True HEPA filter termed as H13 and classifies as a medical grade filter.

Priced at $270, the air purifier does an exceptional job at covering a large expanse. For context, the unit is rated to clean 840 sq. ft. of floor space in 30 minutes. Meaning, it can repeat the cleaning cycle twice in an hour for a room size of more than 800 sq. ft. If that isn’t commendable at this price, it’d be tough to find what is! For installing a similar grade of air filtration in even large spaces, you could opt for its descendant, the Medify Air MA-112 V2.0, that is rated to cover 2,500 sq. ft. of floor space in under 30 minutes! Well, yes. We double-checked that number. I haven’t ranked it as the absolute best large room air purifier for nothing! Further, as it would be expected, both the models are CARB certified.

With a gigantic area coverage of up to 1,560 sq. ft., the Coway Airmega 400 is arguably the best large room air purifier amongst other available options, for several reasons. This unit can be conveniently installed in large rooms, offices or condominiums with polluted/unpleasant environments. Alongside efficiently covering such a commendable expanse, the purifier repeats the cleaning cycle twice in an hour.

The Airmega 300 Smart (covers 1256 sq. ft.) and Airmega 400 Smart (this model, covers 1560 sq. ft.) aren’t compatible with Alexa. You can, however, get this feature in their advanced counterparts, the Airmega 300S and Airmega 400S. All filtration standards remain the same as their respective predecessors. 

The primary filter in this unit is termed as the Max2 filter. It is essentially a combined HEPA filter and an activated carbon filter designed to optimally trap 99.97% of suspended particles up to 0.3 microns in the air. This includes particulate matter, pollen and other allergens. The Max2 filter further accounts for elimination of hazardous volatile organic compounds including cigarette smoke, ammonia, formaldehyde and other toxic fumes from wildfires and smog.

This stand-alone air purifier from LEVOIT is the most suitable pick for moderately large spaces ranging from 500 Sq. ft. to 900 Sq. ft. To be precise, the purifier is tested and approved to clean 500 sq. ft. rooms in 30 minutes. Meaning, the unit can run the cleaning cycle twice in an hour for a room that spans 500 sq. ft. Combining the reliability of a true HEPA filter with commendable cost efficiency, this large room air purifier+ brings you just what you’ve been looking for.

Levoit is a highly acclaimed American brand with multiple best-selling air purifiers that are priced very reasonably for the value they accompany. Also, they have a versatile range of models ranging from bedroom air purifiers to air cleaners for large open spaces. For instance, the Levoit Vital 100 (priced lower than LV-PUR131) is also rated to cover an expanse of 500 Sq. ft. per 30 minutes while the Levoit LV-H133 covers an area of up to 881 sq. ft. twice in an hour. 

Boasting ozone-free operation with an effective 3-stage filtration system, the Bissel air320 has gained massive popularity among homeowners lately. The purifier exhibits a practical and attractive; elevated platform design in addition to its thorough air cleaning apparatus. Owing to its rather compact and streamlined built alongside sturdy feet, the cleaner can be virtually placed anywhere in the house. The clever design, further allows for a convenient front access to filters in case of washing or replacing.

Coming to the actual performance of the air cleaner, first hand users are quite satisfied with the overall practicality of the apparatus. Reviews mention that the purifier actually purifies air to a fairly noticeable degree. The manufacturer claims that the unit can be effectively used in rooms of up to 1000 sq. ft. as it is rated to clean indoor air of such expanse once an hour. For a 1000 sq. ft. air purifier, its air filtration is quite phenomenal too. 

In lines with the orthodox placement, the coarser pre-filter is stationed ahead of the HEPA filter which is followed by the activated carbon filter to end the cycle. The assembly leads to elimination of larger irritants including pet hair, pollen, mold spores, dust and dust mites with much smaller pollutants including some species of bacteria.

Keeping flawless air cleaning as your primary concern, do you also want your air purifier to seamlessly blend in with your home décor? Who wouldn’t! The Alen BreatheSmart Classic Air purifier is an air purifier for to lookout for. With a beautiful collection of customisable front panels to choose from, you’d no longer have your air purifier look all bulky and mismatched with the design of your room.

Ideal for large rooms to extra large open shared spaces of up to 1100 Sq. ft., the Classic air purifier comes in four specialized alternatives. Respective variants are particularly proficient at removing Allergies & Dust, Mold & Bacteria, Pet Dander & Odor and Smoke & VOCs. The Air cleaner comes with one HEPA Type filter (chosen out of these 4 variants) and is rated to last for 9-12 months. All 4 variants of the replacement filters are interchangeable, which implies if you bought the unit as the allergies and dust variant, you may replace the previous filter with any of the other three to address that specific concern predominantly thereon. You can view all its replacement filters on Amazon here

The HealthPro Plus from IQAir is a rather high-end air purifier that’s less of a luxury and more of a necessity at current times. It completely overshadows other contenders in our list for most aspects. With extravagant features like a gigantic area coverage of 1125 sq. ft., capability to trap the finest of viruses (as small as 0.003 microns) that categorize as ultrafines and protracted filter lives of up to 4 years, the IQAir HealthPro Plus is indeed one of the best air purifier for large rooms for people that appreciate precision.

The Purifier has a 3-stage filtration system that initiates with the PreMax filter (18 month filter life). It filters out larger & smaller particles including pollen, mold spores and pet dander ahead of the specialized HyperHEPA filter. Subsequently the HyperHEPA filter (4 year filter life) traps airborne bacteria and viruses down to their smallest prevalent sizes. The V5-Cell filter in between accounts for odor and gas removal from the outflow of air. It features granular activated carbon and lasts for a hefty 2 years!

The centre of attention here is the HyperHEPA filter that’s placed as the second layer of filtration system. As the names suggests, it’s a True HEPA filter but excessively enhanced.

Our next pick, the RabbitAir MinusA2 HEPA air purifier comes in with a thoughtful and adaptable built. Meaning, it can be used a stand-alone air purifier or you can opt it to use as a wall mounted model. Ideal for large rooms, the MinusA2 is rated for an area coverage of up to 815 Sq. ft. Also, the package includes the wall mounting bracket, so you do not have to spend extra bucks there. Additionally, you can choose from a black or white exterior finish or one with the smart wi-fi connectivity.

Coming to the functionality, the purifier cleans the air with the help of 6 discrete stages in the following order. The pre-filter followed by the medium filter and then the True HEPA filter to physically remove suspended impurities. Following these, a customised filter and an activated carbon filter to account for smoke and odor removal. In the end, an ionizer ensures no unwanted particles make it through the unit.

Let’s break that down, shall we? So, the first three filters are intended to remove larger and smaller particles up to 0.3 microns.

Ideal for moderate sized living rooms, bedrooms or kitchens or office spaces of up to 360 sq. ft., the Winix 5500-2 air purifier is yet another budget-friendly pick. Besides being easy on the pocket, the set of air purifying technologies employed in this model are efficient, safe and effective. 

This air purifier has a 3 stage purification system including a HEPA filter, an activated carbon filter and a permanent plasmawave filter. The first stage is the HEPA filter that traps almost all suspended pollutants and allergens of size as small as 0.3 microns. 

The subsequent activated carbon filter is a washable filter that can be reinstalled upon washing once it reaches saturation. Among other air purifiers with washable filters, Winix 5500-2 enjoys a profound prevalence among users. The activated carbon filter accounts for gaseous pollutants like VOCs and other unwanted odors like cigarette smoke or pet odor. 

Especially designed for moderate sized spaces, this attractive air purifier from Coway combines effectiveness and budget-friendliness in the perfect proportions. The slim, free-standing design of this unit complements the best of décor schemes. The clever design comes in two different exterior finishes namely black and white.

With an adequate area coverage of up to 361 sq. ft., the Coway AP-1512HH might as well be the most cleverly designed air purifier for moderate sized spaces. Alongside looks, the unit is loaded with handy features. For instance, the air quality indicator gives you real time assurance that the air you breathe is free of pollution. Also, the filter replacement indicator tells you beforehand if your filters have reached saturation. If you’re looking for Air purifiers with 1 time invest i.e permanent filters, you must consider our list of best air purifiers with washable filters.

“Rated at a CADR of 500 CFM, the Blueair Classic 605 air purifier roughly carries out 4 air changes per hour in a room as large as 775 sq. ft.” This is where the common buyer gets flattered. To bring that to perspective, you won’t actually get 4 air exchanges per hour, but what you get it’s still quite impressive. I’ll elaborate. These numbers can sometimes be misleading and trick buyers into thinking that a certain statement will be the actual case, it’s most often not. (Read here, how CADR ratings can be misleading .)

In this case, the Clean air delivery rate (CADR) of 500 CFM is only true for the max speed, which is certainly not the setting where most of us would use these devices 24/7. So, “it carrying out 4 air exchanges per hour” becomes nothing more than a marketing trick. Most of us would use our air purifiers at around half the full speed setting. Here too, we’re getting 2 air exchanges per hour for a 775 sq. ft. room which is quite good for a low setting. At its price, the BlueAir Classic 605 outmatches some of the most popular alternatives from renowned brands.

For our readers that appreciate versatility alongside design and functionality, you wouldn’t want to overlook the Dyson Pure Hot + Cool Link HP04 Air Purifier. How do you see a reliable True HEPA air purifier that doubles as a cooler in hot weather and as a heater in winter? Available in a similar price range as other true HEPA + activated carbon filter air purifiers, I see the added features as an absolute bounty. But still if you want to save some bucks then you can opt for Dyson Pure Cool TP04 which doesn’t have a heater.

The app-controlled purifier uses a combination of a true HEPA filter and an activated carbon filter to eliminate solid pollutants and gaseous hazards from your indoor air. When combined the air purification with heating or cooling, you can even adjust the jet of purified air outflow on your smart device. The jet focus control can be set on the personal mode for a powerful and focused stream of air or on the diffused mode for a wider projection of hot/cold air.

On the downside, although the product states that it is meant to be a large room air purifier, it doesn’t mention the exact square footage that it can efficiently cover.

If you’ve been scouring the internet for a while looking for a good air purifier for your home or office, you might have come across the term ‘HEPA’ at least a couple of times. HEPA filters are the most widely used apparatus in air purifiers often coupled with one or more amongst the subsequent four.

HEPA is an acronym that stands for High Efficiency Particulate Air. In essence, a HEPA filter can trap 99.97% of suspended particles in air that are 0.3 microns or more. Umm, what does that mean actually? Well, for context, the thickness of an average human hair strand is 100 microns. So, a HEPA filter can trap particles that are roughly 330 times thinner in diameter than a hair strand! In other words, that’s quite effective.

An ion is essentially a charged atom. What an ionizer does exactly is it charges the neutral floating particles that could not be filtered out physically through the HEPA filter. Once the particles get charged, they tend to stick to solid surfaces of your room instead of staying afloat.

This approach doesn’t essentially eliminate the suspended particles completely; rather it only takes them out of the air temporarily. Such charged particles stuck on your walls or furniture may yet again tend to contaminate the air once they’re set loose. Here’s everything you need to know about Ion generators and if they’re safe for domestic usage. 

UV lights are often seen complementing a filter-based air purifier to increase the overall efficiency of the unit; rather than being a complete air purifying mechanism on its own. The reason being, UV lights can only account for pathogenic microbes including mold, bacteria and viruses and not other suspended contaminants or gases.

Short-wave ultraviolet light (UV-C light) is germicidal; meaning it kills bacteria and viruses by destroying their genetic structure. But this happens only when the microbes are directly exposed to the radiation; not when they are crowded amongst other suspended pollutants in the air.

It is hence very necessary that the UV lamp is assisted with an effective filter that physically takes out suspended particles ahead of it. A HEPA filter coupled with a UV lamp makes for an effective combination to completely clean the air of suspended pollutants (allergens and chemical compounds) and pathogenic microbes.