According to the EPA, we spend most of our time indoors. That’s why indoor air quality is important. We breathe that air and expose our skin to it.
Sadly, the quality of air indoors can be from 2 to 5 times lower than outdoors. To breathe fresh air indoors, we need to actively purify it.
Airborne pollutants include dust, smoke, pollen, dust mites, mold, mold spores, volatile organic compounds (VOCs), kitchen odors, and so on.
HVAC devices that reduce the concentration of indoor air pollutants are called air purifiers. In their most basic form, these are devices that push indoor air through a number of filters that capture the indoor air pollutants. The primary filters are HEPA filters, activated carbon filters, and pre-filters.
We categorize air purifiers based on the concern (against smoke, mold, room size, etc.) or by brand (Medify, Alen, Air Oasis, and so forth). For an in-depth understanding of air purifiers, you should check our all-in-one essential guide to air purifiers here.
Even more importantly, we include useful resources on topics of air purifier positioning, sizing, specifications (CADR, ACH), and many others.
Air Purifiers By Concern Or Metric
- 5 Best Air Purifiers For Allergies In 2021 (+ H13 Medical-Grade HEPA Filters)
- 5 Best Air Purifiers For Smoke In 2021 (Wildfire Smoke, Cigarettes, …)
- 6 Best Air Purifiers For Mold In 2021 (With Mold-Eradication Filters)
- 7 Best Large Room Air Purifiers For Large Rooms With 7000+ Sq Ft Coverage
- 5 Best Air Purifiers For Bedroom In 2021: Compared, Reviewed, Rated
- 9 Highest CADR Air Purifiers With High CFM Airflow (2021)
- 5 Best Medical-Grade Air Purifiers In 2021 (With H13 HEPA Filters)
- 5 Best Air Purifier And Humidifier Combos In 2021 (2-In-1 Units)
- 4 Best Wall-Mounted Air Purifiers: Why Wall Is Best Placement?
- 4 Best Dehumidifier And Air Purifier Combos (All-In-One Units)
Air Purifiers By Brand (With Reviews)
- 5 Best Medify Air Purifier Reviewed: MA-40 vs MA-25 vs MA-18 vs MA-15 vs MA-14
- 5 Best-Of-The-Best Alen BreatheSmart Air Purifiers (2021 Review)
- 12 Best Dyson Air Purifiers Reviewed: Really Overpriced Like Yankee Candles?
- 3 Okaysou Air Purifier Reviews: Are They Any Good?
- BlueAir Purifier 2021 Reviews: 6 Models Compared, Reviewed, Rated
- 7 Best Levoit Air Purifier Reviewed: Are They Any Good?
- Coway Air Purifiers Reviews: Comparison Of Best 5 Models
- Winix Air Purifier Reviews: Best 6 Model Compared And Rated
- Molekule Air Purifier Reviews: Are They Truly The Best?
- 7 Best Honeywell Air Purifiers In 2021: Compared, Reviewed, Rated
- GermGuardian Air Purifier Reviews: 6 Best Models Compared & Rated
- Airdog X5 Air Purifier Review: Best 2020 Air Purifier Innovation? (+Specs)
Comparison And Individual Reviews
- IQAir Air Purifier Review: How Good Is This Swiss-Made Wonder?
- Alen BreatheSmart 75i Review: Arguably #1 Air Purifier In 2021
- Alen BreatheSmart Classic Large Room Air Purifier (2021 Review)
- Alen BreatheSmart FIT50 Air Purifier 2021 Review
- Alen BreatheSmart FLEX Review: Quiet, Capable, For Bedroom
- Dyson HP01 vs. HP02 vs. HP04 Comparison: Which One Is The Best?
- Dyson HP01 Review: Why It’s Not “Just Great”?
- Hathaspace Air Purifier Review: Comparison Of 2 Best Models & Rating
- Airific Air Purifier Review: New 2020 Personal Air Purifier
Air Purifier Specifications And Calculators
- Understanding CADR Rating: #1 Specification For Good Air Purifiers
- Air Changes Per Hour Calculator (CFM Based Formula + Examples)
- CFM Calculator: How To Calculate CFM (+ Chart)
- CFM To CFH: Easiest Conversion You Will Find (+ Calculator)
Filters For Air Purifiers
- HEPA Filter Types And How Do HEPA Filters Work? (4 Mechanisms)
- Activated Carbon Air Filter: How Does A Carbon Filter Work? (Adsorption)
Air Quality And Air Purifiers FAQ
- How Do Air Purifiers Work? (Basics Explained: Fan + Filters)
- Where To Place Air Purifier? (7 Golden ‘Best Place’ Rules + Bonus Tip)
- How Many Air Purifiers Do I Need? One For Every Room?
- How Much Electricity Does An Air Purifier Use? Do They Use A Lot Of Electricity?
- How To Smoke Indoors Without It Smelling? (5 Tips For Room, Bathroom, House)
- 8 Differences Between Air Purifiers vs Humidifiers (Comparison)
- Ozone Generators: How Does An Ozone Machine Work? (+Safety Concerns)
- MERV Rating Chart: Understanding 1-20 MERV Rating (For Filters)
- 5 Simple Yet Effective Ways How To Improve Indoor Air Quality Today
- How Often To Change Air Filters At Home? 20-180 Days + Best Practices
Other Types Of Units For Air Quality
- 5 Best Residential Air Curtains For Home (2021)
- 5 Best Air Scrubbers For Any Kind Of Project (+Specs)
- 8 Best Bathroom Exhaust Fans In 2022 (For Any Bathroom)
- 7 Best Ceiling Fans In 2022 (Airflow, Sizes, Wattage, Indoor/Outdoor)
- 4 Best High Velocity Floor Fans In 2022 (5,000+ CFM Airflow)
- 4 Best Wall-Mounted Fans In 2022 (+ 5 Key Specs To Check Out)
- 4 Quietest Floor Fans In 2022 (Perfect For Bedroom, Sleeping)
- Ceiling Fan Size Guide: What Size Ceiling Fan Do I Need? (50-1000 Sq Ft)
- Ceiling Fan Wattage, Power Calculator (+Running Costs Chart)
- Ceiling Fan Downrod Length Chart (+ 4 Rules For Right Rod Size)
- Ceiling Fan Making Noise: How To Fix A Noisy Ceiling Fan (7 Easy Fixes)
- CFM Per Watt: Understanding Fan Airflow Energy Efficiency
- 5 Very Quiet Bathroom Fans In 2022 (Below 0.9 Sones; Whisper Quiet)
- 3 Best Bathroom Exhaust Fan Venting Options (+ Code Requirements)
- How Much Electricity Does A Fan Use? Fan Wattage + Cost Calculator
- Ceiling Fan Direction For Summer Vs Winter (Clockwise VS Counter-Clockwise)
- How Many CFM For Bathroom Fan? CFM Calculator + CFM Chart
- What Does CFM Stand For In HVAC? It’s All About Airflow
- Sones To dB Calculator For Fans (With 0.3, 1.5, 3.0 Sone Examples)