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Best Air Purifiers for 2021

Safety Team
Updated May 3, 2021
2 min read
After spending more than a year in quarantine because of an airborne, pandemic-level virus, we're all increasingly aware of air quality. Whether you want to take the extra step to keep a clean environment in your home or at the office or if you just want to breathe a bit easier in general, an air purifier is an excellent tool to have. These devices filter the air for you, removing particles that can carry bacteria, fungi and disease. This guide will help you choose which air purifier is best for you.

Benefits of Air Purifiers

  • Protects against airborne diseases: Perhaps the most common reason to use an air purifier is to protect against airborne diseases. These infectious illnesses can cling to other particles in the air like dust or vapor, leading to you being exposed and potentially infected. Air purifiers, particularly those with a high-efficiency particulate absorbing filter, can help eliminate these pathogens, so you aren’t breathing air that could make you sick.
  • Eliminates potentially harmful chemicals: You may not know it, but toxic chemicals like nitrogen dioxide and carbon monoxide could be hanging in the air in your home. These chemicals can result in adverse health outcomes, including an increased risk of dementia and Alzheimer’s disease. An air purifier can protect you by filtering the air in a way that kills these chemicals, limiting your exposure.
  • Neutralizes odor: Let’s be honest, sometimes there’s just a smell you can’t quite put your finger on. Volatile organic compounds, which are found in things like paint or gasoline, can break down at room temperature, resulting in an unpleasant odor lingering in the air. Air purifiers help to remove these odors, which can sometimes cause nausea and other unpleasant conditions.
  • Can improve sleep: When the air you’re breathing is packed with allergens and other bothersome particles, it can lead to conditions that make it hard for you to sleep. You might find yourself sneezing, coughing, or suffering from a sore throat or congestion that bothers you through the night or make you feel drowsy and uncomfortable during the day. Air purifiers filter out many of those allergens, which can help you get the sleep you need.

Different Types of Air Purifiers

  • HEPA: HEPA, or high-efficiency particulate absorbing filters, is one of the most common forms of air purifiers. They are held to a high standard, required to eliminate at least 99.97% of all particles larger than 0.3 microns.
  • Activated carbon: Activated carbon is a form of carbon that is very porous and capable of absorbing lots of pollutants. It is great at capturing gases, smoke and odors, making it ideal for people with Multiple Chemical Sensitivity.
  • Negative ion: Negative ion air purifiers use negatively charged oxygen atoms to magnetically attract airborne particles, including those that contain dangerous chemicals or diseases.

The Best Air Purifier Features

  • Air filtration technology: The most important part of an air purifier is its ability to keep the air clean of toxins, allergens or whatever may be bothering you. Pick the type of air purifier that is best for your situation.
  • Noise level: Cleaning the air isn’t always a silent process. Some air purifiers can get quite noisy. This is something that you’ll want to keep in mind, particularly if you’re planning to run the purifier in a busy place or while you’re sleeping.
  • Energy consumption: Many air purifiers are designed to run all day long. But doing that can rack up a considerable energy bill. Take into consideration this cost, especially if you want to keep the filter running at all times.

How We Chose The Best Air Purifiers

To determine the best air purifiers, we explored the details of dozens of different options, researched the different types of technology utilized in these systems, and considered features that may matter to you, including noise level, price and energy efficiency. We prioritized systems that filtered out allergens and diseases that can be transmitted via airborne particles. In the end, we determined that HEPA systems offer the best protection. While this guide will help you determine air purifiers that are effective, fit into different budgets and serve different spaces like bedrooms or offices, you may also want to consider other conditions, including aesthetics.


Home Security Experts

Safety Team

The Safety Team is a group of experts that handle provider research, product reviews and recalls to make your home safety and security search as easy as 1-2-3.

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