In the quest for cleaner, healthier indoor air, air purifiers have become an essential household item. With a myriad of options available, choosing the right one can be overwhelming. This comprehensive guide will help you understand the key Features to look for when buying a good air purifier.

Understanding Air Purifiers

Air purifiers are fundamentally simple machines, primarily consisting of a fan and a filter. However, a well-designed purifier can capture virtually all airborne allergens, such as pollen and mold spores, as well as bacteria, viruses, and smoke. The particles that cause the most trouble are the smallest ones. They stay suspended in the air the longest and can be breathed into our lungs. Our nasal passages are not filtering them.

Key Features to Consider

When choosing an air purifier, consider the following Features:

  • High-Efficiency Particulate Air (HEPA) Filter: A good air purifier should have a HEPA filter. These filters are considered the gold standard in air purification as they remove 99.97% of particles from the air.
  • Room Size: Match the air purifier to the size of the space you plan on using it. For a bedroom, a small air purifier might be enough, but you might need something bigger for a large home with tall ceilings and multiple rooms.
  • Activated Carbon Filter: If you need odor removal, your air purifier should also have an activated carbon filter. This carbon is great for a wide range of gases, including mold-related odors and smoke.
  • Manufacturer Reputation: Many users prefer brands with positive reputations based on previous experience or research.

By focusing on these key Features, you can ensure that you are selecting an air purifier that will effectively clean the air in your space. Remember to consider the size of the room and the specific needs you have, such as allergies or odor removal. Additionally, prioritize air purifiers with HEPA filters and activated carbon filters for the best results in capturing particles and removing odors. Finally, consider the reputation of the manufacturer to ensure that you are investing in a high-quality and reliable product.

Top Air Purifiers to Consider

Based on extensive testing and reviews, here are some top air purifiers to consider:

  1. Coway AP-1512HH Mighty Air Purifier: This air purifier is a formidable device when it comes to purifying the air. Its 4-stage filtration system is highly effective in capturing a broad range of pollutants, from dust and pet hair to harmful VOCs and ultra-fine particles like viruses and bacteria.
  2. Honeywell HPA300 True HEPA Allergen Remover: This air purifier is a game-changer for those suffering from allergies or sensitivities to airborne particles. Its high-efficiency filtration system captures an impressive 99.97% of airborne allergens, making it an excellent choice for large rooms.
  3. Rabbit Air MinusA2 Ultra Quiet HEPA Air Purifier: This top-tier product offers advanced filtration, customizable Features, and intelligent operation. While the initial cost may be high, its performance, reliability, and low long-term operating costs make it a worthy investment for anyone serious about indoor air quality.
  4. Levoit LV-H132 Personal True HEPA Air Purifier: This compact air purifier packs a punch with its 3-stage filtration system. It efficiently captures a variety of airborne particles, including pet dander, fine dust, and pollen, living up to its claim of 99.97% filtration efficiency.
  5. Alen BreatheSmart FIT50 Customizable Air Purifier: What sets this air purifier apart is its customizability. You can choose from a variety of filters tailored to your specific needs, whether it’s combating urban pollution or household odors.

Air Purifier Maintenance Tips

Like any other device, air purifiers need regular maintenance to function optimally. Regular cleaning ensures optimal performance and extends the lifespan of your device. A poorly maintained air purifier can do more harm than good, releasing trapped pollutants back into the room. Hence, regular cleaning is not just beneficial but essential.

Understanding Your Air Purifier

Before diving into the maintenance tips, it’s crucial to understand how your air purifier works. Air purifiers clean the air of harmful pollutants, such as dust, dander, pollen, chemicals, and odors. They work by pulling air through a series of filters, which clean the air by trapping polluted particles. Then, an electric fan blows out the cleaned air.

General Maintenance Tips

Here are some general maintenance tips that apply to most air purifiers:

  • Read your air purifier’s owner’s manual. Your owner’s manual is your best resource for addressing maintenance concerns, installation, replacement parts, and more.
  • Don’t block the air circulation. Make sure your unit isn’t closer than two feet to the nearest wall or large object.
  • Don’t place objects on top of your air purifier. Heavy objects can damage your unit or obstruct air flow.
  • Turn the unit off before unplugging it. Unplugging an air purifier while it’s still on can cause an electrical surge that damages the unit.
  • Replace air filters regularly. If your air purifier uses replaceable filters, don’t neglect to replace them at recommended intervals.
  • Clean permanent filters. If your air filter has a permanent filter, it’s meant to be cleaned and reused.
  • Don’t run a damaged air purifier. If you notice strange smells or noises, the air purifier is not shutting off, or it is not functioning properly, don’t continue to run it.

Filter Maintenance

Different types of air purifiers require different types of maintenance. Here’s a breakdown of the maintenance required for the most common types of filters:

  • Electrostatic Air Purifiers: These units only require that you be committed to regularly washing the plates, generally once a week.
  • Pre-Filters: Pre-filters can either be washed or inexpensively replaced, depending on the model purchased.
  • HEPA Filters: HEPA filters are designed to pull the tiniest of pollutants from the air and trap them permanently. Therefore, keeping your air purifier’s pre-filter clean and clear will keep your HEPA filter working better for a longer time.
  • Carbon Filters: Carbon filters work by trapping or absorbing chemicals and odors from the air. It is important to maintain it. If your air purifier uses a thin carbon filter, then it will need to be changed more often.


Air purifiers are an excellent investment in your health and well-being, but selecting the right one can be overwhelming due to the abundance of options available. By understanding the key Features to look for and considering the top picks based on user reviews and expert evaluations, you can make an informed decision that best suits your needs.

For more information on air purifiers, visit our Air Purifier Buying Guide and Air Purifier Comparison Chart.


What type of filters should I look for in a good air purifier?
Answer: Look for air purifiers with HEPA (High-Efficiency Particulate Air) filters as they can capture up to 99.97% of particles that are as small as 0.3 microns, including pollen, pet dander, dust mites, and smoke.

How often do I need to replace the filter in my air purifier?
Answer: Depending on the type of filter and usage level, it is recommended to replace the filter every 6 months to a year for optimal performance. Some air purifiers have indicator lights that will let you know when it’s time to change the filter.

Can an air purifier remove odors from my home?
Answer: Yes! Many good-quality air purifiers come with activated carbon filters, which effectively eliminate bad odor from pets or cooking smells by absorbing odorous molecules before releasing clean and fresh-smelling air into your room.


Hey there, I'm Kevin, editor of Xievo. I'm passionate about air purifiers and providing accurate information to help readers make informed decisions. In my free time, I love hiking and experimenting with air purifiers in my own home. Thanks for visiting Xievo!