When considering the size of air purifier you need, there are a few factors to take into account. The most important factor is the square footage of the room or area where you plan to use the air purifier. The size of the room will determine the necessary airflow capacity of the air purifier.
To determine the square footage of your room, measure the length and width. Then, multiply those two numbers together. For example, if the room is 10 feet long and 12 feet wide, the square footage would be 120 square feet.
Once you have the square footage, you need to determine the air changes per hour (ACH) required for that room. Generally, it is recommended to have at least 4 to 6 ACH for better air purification. This means that the air in the room should be completely filtered 4 to 6 times per hour.
To calculate the required airflow capacity, multiply the square footage by the desired ACH and divide it by 60 (minutes). This will give you the minimum airflow in cubic feet per minute (CFM) needed for effective air purification. For instance, if the square footage is 120 and you desire 4 ACH, the minimum required CFM would be (120 * 4) / 60 = 8 CFM.
Keep in mind that this is a general guideline and might vary depending on specific circumstances, such as allergies or environmental conditions. If you have severe allergies or live in an area with high pollution levels, it might be better to consider a larger capacity air purifier or even multiple units.
Additionally, consider the Clean Air Delivery Rate (CADR) when choosing an air purifier. CADR measures the unit's effectiveness in removing pollen, dust, and smoke from the air. The higher the CADR, the faster and more efficient the air purifier is at cleaning the air.
It's always a good idea to consult the manufacturer's recommendations for their specific models as well. They often provide guidelines on the recommended room size for their air purifiers, which can help you make a more informed decision.
Best Air Purifiers for Home in 2024
1
Rating is 5 out of 5
LEVOIT Air Purifiers for Home Large Room Up to 1900 Ft² in 1 Hr with Washable Filters, Air Quality Monitor, Smart WiFi, HEPA Filter Captures Allergies, Pet Hair, Smoke, Pollen in Bedroom, Vital 200S
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LARGE BEDROOM COVERAGE: The Vital 200S is perfect for large, indoor spaces, especially large bedrooms. Purify a 380 ft² room 5x per hour, a 950 ft² room 2x per hour and a1900 ft² room 1x per hour
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HIGHER AIR INTAKE: Purify your air quickly. With a traditional air inlet and the additional U-shaped air inlet, airborne pet fur and hair can easily be trapped without causing clogs
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COMFORTABLE NIGHTS: Trap airborne allergens that cause congestion and coughing before they reach you. When in Auto Mode, the Vital 200S will automatically adjust the fan speed to protect your air quality while you rest
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LOVE YOUR PETS: Filter pet hair and odors from your air while saving energy, if you open Pet Mode which is only controlled in the Vesync app. Thanks to this mode which alternates between high and medium fan speeds. The additional U-shaped air inlet helps trap airborne fur without causing clogs
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3-STAGE FILTRATION: Cleaning the Washable Pre-Filter helps the 3-stage filtration system last longer. The HEPA Filter traps pet dander, pollen, and more, while the High-Efficiency Activated Carbon Filter helps neutralize pet odors, fumes, and VOCs
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RIGOROUS VIRUS TEST: The capacity of removing viruses is reliable because the data are approved by an authoritative detection mechanism.
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CREATE SCHEDULES: Have a varied sleeping schedule Schedule exact start and end times for the Vital 200S, selecting which fan speed or mode you’d like the air purifier to use at different time periods, such as Auto Mode or Sleep Mode
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GENUINE LEVOIT FILTERS: Off-brand replacement filters can cause damage to your air purifier. For best results and product performance, search B0BJPJ94MM for an official Levoit replacement filter
2
Rating is 4.9 out of 5
MORENTO Smart Air Purifier for home Large Rooms up to 1076 ft², Wi-Fi and Alexa compatible, PM2.5 Air Quality Display, Auto Mode, Quiet Mode 24dB, HEPA Filter Removes Dust, Pollen, Smoke (White)
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Enjoy Clean Air: MORENTO HY4866-WF smart air purifiers for home can be used at home to effectively capture 99.97% of airborne particles with a size of 0.3 microns, including dust and pollen. This air purifiers for home large room with a CADR of up to 300 m ³/ h, one air change per hour can be completed for rooms up to 1076 ft² or 100 m². This air purifier for home can use with the “Havaworks” app to monitor the air quality from your phone in real-time.
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App-Enabled Wi-Fi Control: Use the “Havaworks” app to turn your air purifiers for home into a remote. Set an active schedule for convenience or manually control the settings for a burst of clean air. Monitor the air quality and check the filter life on this hepa air purifie's display or APP at your leisure.
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Intelligent Voice Control: Go hands-free and use your voice to monitor and change the HY4866-WF hepa air purifier's settings through Amazon Alexa or Google Assistant.
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High Efficiency Filtration: The double air intake design of this hepa air purifiers for home allows the multi-layer HEPA filters to purify from both sides simultaneously, increasing the purification speed. The smart display of this air purifiers for home and app monitors the filter life and will let you know when to replace them. Search for B0BMDYDXFK (enhanced) or B0C3GWNR29 (original) on Amazon for replacement filters.
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Sleep Well: In sleep mode, this air purifier for bedroom will run at its lowest fan speed at less than 24dB (the equivalence of ambient silence) with the display lights off. Enjoy an interrupted night’s rest with clean air. Activating the display of the air purifier will exit sleep mode.
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4 Fan Speeds: Select from fan speeds of 1F/2F/3F/4F for this HY4866-WF hepa air purifier for home; the higher the fan speed, the quicker the air is filtered and purified. In automatic mode, the fan speed will automatically adjust to the air quality. Couple this with a 2/5/8 hour timer to have this air purifier for bedroom run for the designated period of time while sleeping or heading out.
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Air Quality Monitoring: The PM2.5 infrared sensor monitors the air quality in real-time and displays this information on the screen of MORENTO smart air purifiers and on the “Havaworks” app. If the air quality drops, the screen of air purifiers for home large room will display yellow or red and the app will send a notification in accordance to current air quality rating.
3
Rating is 4.8 out of 5
Instant HEPA Quiet Air Purifier From the Makers of Instant Pot with Plasma Ion Technology, Rooms up to 1,940ft2, removes 99% of Dust, Smoke, Odors, Pollen & Pet Hair, for Bedrooms, Offices, Charcoal
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ADVANCED AIR CLEANING TECH: Combines a HEPA-13 filter that captures 99.97% of dust, pollen, smoke, mold, & other ultrafine impurities, combined with Plasma Ion Technology that projects positive and negative ions in the air allowing you to breathe easy.
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CLEAN AIR IN MINUTES: Filters up to 1,940 SQFT per hour, and AHAM-Verified to exchange 388 SQFT 5 times per hour, allowing you to breathe cleaner air in minutes.
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AUTO MODE: Automatically senses the air quality and adjusts the fan speed according to detected quality. Digital read out of % air quality and light band indicates when air quality is good-white, okay-orange, or poor-red, and adjusts to get back to good.
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ODOR REDUCER: Activated carbon filter layer helps decreasing unpleasant smells, allowing your rooms or office space to be refreshed.
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WHISPER-QUIET: Light sensor automatically turns off displays and lowers noise to whisper-quiet levels when it is time for bed.
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ENERGY STAR CERTIFIED: Eco mode cycles the fan on and off every 10 minutes, if air quality is detected good for 30 minutes, allowing 50% energy reduction.
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LONG LASTING FILTER: Our high quality air filter can last up to 12 months and changing it is effortless! Unhinge the bottom of the purifier and swap out your old filter and swap in a new Instant Air Purification Replacement Filter.
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A BRAND YOU TRUST: From the makers of Instant Pot, the brand that revolutionized the way you cook, is now transforming the way you live and breathe. With an Instant Air Purifier, you’ll inhale cleaner air, and exhale peace of mind.
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NOT AVAILABLE FOR SALE IN INDIANA.
4
Rating is 4.7 out of 5
AROEVE Air Purifiers for Large Room Up to 1095 Sq Ft Coverage with Air Quality Sensors H13 True HEPA Filter with Auto Function for Home, Bedroom, MK04- White
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Efficient H13 Purification: Equipped with an H13 True HEPA Filter and a high-efficiency filtration system, our air cleaner can effectively filter particles as small as 0.3 microns in the air. When you turn on the high-efficiency air purifier, it can refresh the air in a room as large as 1095 sq ft / 100 m² every hour, providing you with a new and comfortable air environment throughout the day in your home or office.
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Dual Air Treatment: Our air purifier not only uses H13 True HEPA filter to capture particles as small as 0.3 microns, but also features a light treatment technology to further purify the air. With this dual treatment system, we provide more comprehensive air purification, ensuring a healthier living environment for you and your family. (Note: The function is turned off by default, please turn it on to maximize the air purifier's performance.)
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Feel The Air Change: Our air purifier comes equipped with a built-in PM2.5 sensor, so you don't have to play the guessing game with your nose. When the air quality drops, our purifier will go into action and the indicator will turn yellow or red, and the fan will speed up to clean the air faster. Trust us, your lungs will thank you for the break from the dirty air.
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Your Silent Companion: Ssshh...can you hear that? No, it's not the sound of silence, it's the sound of our air purifier in sleep mode! With low noise and low speed, it's the perfect companion for a good night's sleep. It will not disturb your sweet sleep, and even a light sleep baby can enjoy the comfortable air on a quiet night.
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Filter Replacement Made Easy: Say goodbye to the hassle of replacing air filters. Our air purifier makes it a breeze! Simply open the filter cover, grab the rope on the side, and voila! You can easily take out or replace the filter inside. We recommend replacing the air filter every 3-6 months to ensure optimal air purification. (Pro tip: For best results, always use the official filter!)
5
Rating is 4.6 out of 5
PuroAir HEPA 14 Air Purifier for Home - Covers 1,115 Sq Ft - Air Purifier for Allergies - For Large Rooms - Filters Up To 99.99% of Pet Dander, Smoke, Allergens, Dust, Odors, Mold
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CLEANER AIR IN MINUTES: Cleans large rooms up to 1,115 sq ft in just 60 minutes. Perfect for homes and offices. Breathe clean, crisp air and kiss your allergies goodbye!
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POWERFUL HEPA 14 FILTER: The PuroAir filter captures up to 99.99% of fine particulate matter down to 0.1 microns in size. This includes dust, pet dander, odors, and smoke. Up to 10x more powerful than a HEPA H13 grade filter.
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BACKED BY SCIENCE: 3rd party lab tested and certified. Proven to capture up to 99.99% of fine particulate matter down to 0.1 microns in size. This may include allergens, smoke, mold, pollen, dust, and odors among other fine particles you don’t want to breathe in. CARB, ETL, ISO, UL and Energy Star certified. Backed by scientists and virologists at Harvard, MIT, Johns Hopkins, and Oxford University.
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CLEANS AIR AUTOMATICALLY: A smart particle sensor monitors air quality for you and adjusts to increase power if polluted air is detected. Perfect for every room.
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BREATHE EASIER: Relax and let PuroAir filter your home’s air, improving your allergies, asthma and sleep quality. Includes a timer, fan speed, sleep mode, filter replacement indicator, and child lock, great for both kids and pets.
6
Rating is 4.5 out of 5
LEVOIT Air Purifiers for Home Large Room Up to 1980 Ft² in 1 Hr With Air Quality Monitor, Smart WiFi and Auto Mode, 3-in-1 Filter Captures Pet Allergies, Smoke, Dust, Core 400S/Core 400S-P, White
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LARGE COVERAGE: The top-performing Levoit Core 400S Smart Air Purifier can purify large rooms, such as bedrooms, living rooms, kitchens, and basements. Purify a 403 ft² room 5x per hour and a 1980 ft² room 1x per hour
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3-STAGE FILTRATION: Filtration includes an Efficient MiddleFilter, which traps pollen, dust, and pet dander, and an Efficient Activated Carbon Filter that helps neutralize odors, cooking and wildfire smoke, and VOCs
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WHISPER-LEVEL QUIET: Keep the Core 400S running throughout the night, as Sleep Mode uses the lowest fan speed (24dB) to create a sleep-friendly space that’s as quiet as falling leave
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COMBAT ALLERGIES AND ASTHMA: Powerful air purification during allergy and wildfire seasons helps capture allergens that cause sneezing, congestion, breathing difficulties, and other symptoms
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VIEW AIR QUALITY: The laser dust sensor scans the surrounding air for airborne particles, continuously updating the PM2.5 display and creating graphs in the VeSync app so you can see how your air quality has improved
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TRUSTWORTHY AND SAFE: The Core 400S is Energy Star, FCC certified, ETL listed, German Design Award (2021) and iF Design Award (2021). Only use Levoit replacement filters for best results and product performance
7
Rating is 4.4 out of 5
LEVOIT Air Purifiers for Home Large Room Bedroom Up to 1110 Ft² with Air Quality and Light Sensors, Smart WiFi, Washable Filters, HEPA Filter for Pets, Allergy, Dust, Vital 100S / Vital 100S-P, White
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SLEEP WELL: Trap airborne allergens that cause congestion and coughing. With the Light Detection feature, the air purifier will automatically turn off display lights and limit Auto Mode to the quietest fan speeds when the room gets dark
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PET OWNERS FRIENDLY: Pet Mode cleans the air and conserves energy, while the wide U-shaped air inlet effectively traps airborne pet fur and large particles
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3-STAGE FILTRATION: Cleaning the Washable Pre-Filter helps the 3-stage filtration system last longer. The HEPA Filter traps pet dander, pollen, and more, while the High-Efficiency Activated Carbon Filter helps neutralize pet odors, fumes and VOCs
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HEPA FILTER: the HEPA filter of the 3-in-1 filter removes at least 99.97 percent of dust, pollen, and any airborne particles with a size of 0.3 microns (µm)
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CREATE SCHEDULES: Would you like the air purifier to run at specific times Create a detailed schedule with your fan speed and air purifier mode preferences, such as Auto Mode or Sleep Mode
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SMART CONTROL: With the free VeSync app, you can control air purifier settings, set timers, create schedules, check filter life, and connect to third-party voice assistants
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OFFICIAL LEVOIT FILTERS: Search for B0BNTKJV78 to find Levoit's replacement filter for Vital 100S. Levoit filters provide the best fit and filtration, while off-brand filters are unreliable and may damage the air purifie
8
Rating is 4.3 out of 5
2 Pack Druiap Air Purifiers for Home Bedroom up to 690ft², H13 True HEPA Filter Air Cleaner Purify 99.97% Micron Particles/Bad Air/Smoke/Pet Dander/for Office, Dorm, Apartment, Kitchen (KJ80 Black)
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【2 Pack High-Efficiency Air Purifiers for Small, Medium Rooms】-🌿 2Pack option is warmly prepared to meet customers larger air purifying areas demand, more than double efficiency. H13 True HEPA air purifier for Pet Owners, Parents with Newborns. Air filter purify 99.97% of 0.1 Microns airborne particles, perfect for quickly cleaning a wide range of Bad Air, pet dander, cooking and smoking in a certain space. Let you freely enjoying fresh air at home!
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【Ultra-Quiet & Night Light Sleep Mode】-🌿 In Night Light sleep mode, click the Night Light button for the second time to reduce the brightness of the warm white light by 50%, can replace the dazzling light in the bedroom, sound is as low as 20dB, which is very quiet and will not wake up or disturb the sleep of you and your family, including your pets. Keep silent 20dB operation to purify the air, provide you with a quiet and comfortable sleeping environment, enjoy High-Quality Sleep!
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【Energy Saving & Money Saving】-🌿 At 10 cents kWh in the city, M(Medium) Fan Speed Mode power is 5W - only $0.08 per week for continuous operation (24 h/7 days). HEPA air purifiers are perfect for bedrooms, dorms, apartment, medium rooms, small rooms, offices, desk, desktop, living rooms, kitchens, indoor or bookroom. 3 Fan Speed(H/M/L) and 3 Timer Options (2H/4H/8H), you can achieve maximum energy saving according to the specific mode you set.
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【Very Easy To Use & Filter Replacement Reminder】-🌿Small, lightweight, 2.31lb, 6.7*6.7*10.6inch, circular design (360° intake at the bottom) portable compact air purifier for home, we recommend that you replace the filter element at least every 3-6 months or so for the best air purification effect! Search ASIN: B0B6BPPFJ6 to buy the original filter of KJ80. No need specialist knowledge, easy to replace in a few minutes! (NOTE: Other brands of filters are not sized to fit our Druiap purifiers.)
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【Best After-Sales Service】-🌿 (Available for California),100% quality assurance, all the products we send have undergone numerous tests and multiple certifications. Air Cleaner has passed EPA ETL CE FCC RoHS CARB Certification. If there are any question, you can contact us anytime. We will have a professional customer service team to communicate with you! [Package Includes]: 2* KJ80 Air Purifier, [2* H13 Ture HEPA filter , 2*Power Adapter(included inside the air purifier)], 2 *User Manual
How to evaluate the specific needs of your household when buying an air purifier?
When evaluating the specific needs of your household for buying an air purifier, there are several factors to consider. Here is a step-by-step guide to help you evaluate your requirements:
- Identify health concerns: Determine any specific health concerns affecting your household members, such as allergies, asthma, respiratory issues, or sensitivity to odors.
- Determine the size of the room: Measure the square footage of the room where you plan to use the air purifier. Different purifiers are designed for specific room sizes, and choosing the right size is crucial to ensure optimal performance.
- Assess indoor air quality: Understand your indoor air quality. If you live in highly polluted areas, have smokers at home, or experience excessive dust or pet dander, you might need a more powerful air purifier with advanced filtration capabilities.
- Identify specific pollutants: Identify the primary pollutants you want to target. Common pollutants include dust, pollen, pet dander, mold spores, volatile organic compounds (VOCs), smoke, or odors. Knowing the specific contaminants will help you choose an air purifier with the appropriate filters.
- Consider noise levels: If you plan to place the air purifier in a bedroom or a quiet area, consider the noise level generated by the device. Look for units with low noise ratings in decibels (dB).
- Check CADR ratings: The Clean Air Delivery Rate (CADR) indicates the purifier's efficiency in removing specific airborne particles (dust, pollen, smoke). Higher CADR ratings generally indicate better performance.
- Filter types and maintenance: Different air purifiers use various filter technologies like HEPA filters, activated carbon, UV sanitizers, or electrostatic precipitators. Understand the filter types and their lifespan, replacement costs, and maintenance requirements. HEPA filters are generally recommended for most household needs.
- Energy efficiency: Consider the energy consumption of the air purifier. Look for units with an Energy Star certification to ensure energy-efficient operation. This information is generally available on the product label or specifications.
- Budget: Set a budget for your air purifier purchase. Prices can vary significantly depending on the brand, features, and technology. Consider long-term costs like filter replacements when comparing prices.
- Read reviews and seek expert advice: Read online reviews from trusted sources and gather information from experts or professionals in the field. Consumer reviews can provide valuable insights into real-world performance and user experiences.
By evaluating these factors, you can make an informed decision while choosing an air purifier that suits your household's specific needs and ensures cleaner and healthier indoor air quality.
How to estimate the required CADR (Clean Air Delivery Rate) for a room?
To estimate the required Clean Air Delivery Rate (CADR) for a room, follow these steps:
- Determine the room volume: Measure the length, width, and height of the room in feet. Multiply these values to calculate the volume in cubic feet (length x width x height).
- Identify the purpose of the room: Assess the room's specific needs based on its purpose. For example, the CADR requirement for a bedroom may differ from that of a living room or kitchen due to different pollutants present in those areas.
- Select the desired air changes per hour (ACH): Determine how frequently you want the air in the room to be completely replaced with fresh air. ACH varies based on factors such as room occupancy, pollution sources, and personal preferences. Generally, a range of 4-6 ACH is considered acceptable for most residential spaces.
- Calculate the required air volume exchange: Multiply the room volume (step 1) by the desired ACH (step 3). This will give you the total volume of air that needs to be exchanged per hour to maintain desired air quality.
- Convert cubic feet to cubic meters (if necessary): If you prefer using the metric system, convert the room volume from cubic feet to cubic meters by dividing it by 35.315. This step is optional and depends on the CADR units provided by the specific air purifier you are evaluating.
- Divide the required air volume by a time factor: Manufacturers of air purifiers usually provide CADR values for specific time frames such as 15 minutes, 30 minutes, or 1 hour. Divide the required air volume (in cubic feet/hour or cubic meters/hour) by the corresponding time factor to estimate the needed CADR value for your room.
For example, if your calculated required air volume exchange is 600 cubic feet/hour and you choose to divide by 1 hour, the estimated required CADR would be 600 CADR (or 600 cubic feet/hour).
Remember, this is a rough estimate, and it is always good to consult air purifier manufacturers or professionals for specific recommendations based on your unique circumstances.
What is the ideal air flow rate for an air purifier?
The ideal air flow rate for an air purifier depends on various factors such as the size of the room, the level of air pollution, and the specific needs of the individuals using it. However, it is generally recommended that an air purifier should be able to filter the air in a room at least 4-5 times per hour. This means that the air flow rate should be sufficient to circulate the total volume of air in the room through the purifier 4-5 times in one hour.
How to select an air purifier with the right noise level for your preferences?
When selecting an air purifier with the right noise level for your preferences, consider the following factors:
- Look for the decibel (dB) rating: The noise level of an air purifier is typically measured in decibels (dB). Look for this rating in the product specifications. The lower the dB rating, the quieter the air purifier will be. A range of 30-60 dB is common for most air purifiers.
- Know your noise tolerance: Determine your personal noise tolerance level. Some people might prefer complete silence, while others might be okay with a low hum or white noise. This can help you decide the acceptable noise level for you.
- Consider the room size: If you are planning to use an air purifier in a small bedroom or office, you might want a quieter model since the noise might be more noticeable in a smaller space. For larger rooms or open areas, you may opt for a slightly noisier model as the sound will be dispersed across a larger space.
- Read customer reviews: Look for air purifiers that have positive customer reviews regarding their noise level. Many reviews mention the noise level and can provide insights from real-life users.
- Check for adjustable fan speeds: Some air purifiers come with adjustable fan speeds. These allow you to tailor the noise level to your liking. Lower fan speeds often produce less noise, whereas higher speeds can be noisier but provide faster air cleaning.
- Consider nighttime or sleep mode: Some air purifiers have a specific sleep mode or nighttime setting. These modes usually operate at a quieter noise level to ensure a peaceful sleep.
- Avoid ozone generators: Be cautious of air purifiers that produce ozone. These models tend to have fans that create a lot more noise compared to conventional filters. Additionally, ozone generators are not recommended for indoor use due to potential harm to the respiratory system.
By considering these factors, you can find an air purifier that meets your noise preferences and provides clean air for your space.
