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
- 9 Absolute Best Air Purifiers For Dust Removal In 2023
- 5 Best Air Purifiers For Allergies In 2023 (+ H13 Medical-Grade HEPA Filters)
- 5 Best Air Purifiers For Smoke In 2023 (Wildfire Smoke, Cigarettes, …)
- 6 Best Air Purifiers For Mold In 2023 (With Mold-Eradication Filters)
- 7 Best Large Room Air Purifiers For Large Rooms With 700+ Sq Ft Coverage
- 4 Smallest Air Purifiers For Small Rooms (Below 200 Sq Ft)
- 5 Best Air Purifiers For Bedroom In 2023: Compared, Reviewed, Rated
- 9 Highest CADR Air Purifiers With High CFM Airflow (2023)
- 5 Best Medical-Grade Air Purifiers In 2023 (With H13 HEPA Filters)
- 5 Best Air Purifier And Humidifier Combos In 2023 (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)
- 4 Absolute Quietest Air Purifiers On The Market (Below 52.1 dB)
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 (2023 Review)
- 12 Best Dyson Air Purifiers Reviewed: Really Overpriced Like Yankee Candles?
- 3 Okaysou Air Purifier Reviews: Are They Any Good?
- BlueAir Purifier 2023 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 2023: 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 2023
- Alen BreatheSmart Classic Large Room Air Purifier (2023 Review)
- Alen BreatheSmart FIT50 Air Purifier 2023 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
- Medify Air MA-14 Review: How Does Desktop Air Purifier Perform?
- Medify Air MA-15 Review: Is Best-Selling Rank Actually Deserved?
- Medify Air MA-25 Review: What Does Spec-By-Spec Analysis Tell Us?
- Medify MA-50 Review: Is It Really That Good? (2023)
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)
- Air Purifier Room Size Calculator: What Size Air Purifier Do You Need?
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)
- HEPA Filter H13 Vs H14: What Is The Key Difference Here?
- Air Purifiers With UV Lights: Why UV-C Filter Alone Is Not Enough?
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 (2023)
- 5 Best Air Scrubbers For Any Kind Of Project (+Specs)
- 8 Best Bathroom Exhaust Fans In 2023 (For Any Bathroom)
- 7 Best Ceiling Fans In 2023 (Airflow, Sizes, Wattage, Indoor/Outdoor)
- 4 Best High Velocity Floor Fans In 2023 (5,000+ CFM Airflow)
- 4 Best Wall-Mounted Fans In 2023 (+ 5 Key Specs To Check Out)
- 4 Quietest Floor Fans In 2023 (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 2023 (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)
- 3 Easy Ways How To Tell If Ceiling Fan Capacitor Is Bad (Symptoms)
- Whole House Fan Size Calculator: How Many CFM You Need?
- Bathroom Exhaust Fan Duct Size (4-9 Inches, 50-250 CFM Chart)
- FPR vs MERV Chart: Air Filter Ratings Explained
- What Size Attic Fan Do I Need? Attic Fan Size Calculator + Chart
- How Many Soffit Vents Do I Need? Soffit Vent Calculator + Chart