(Last Updated On: April 27, 2023)

Can Air Purifiers Dry Out Your Sinuses?

Overall, air purifiers have no impact on moisture levels in the air in your home. Therefore, air purifiers do not cause your sinuses to be dry. High or low humidity, particularly during winter months, can trigger your allergies and humidity is a bigger factor in whether or not your sinuses are dry. Adding an air purifier can help relieve your allergies by removing the particles in the air but they do not impact moisture in the air.

Afro man with closed eyes touching his nose

How Air Purifiers Impact Indoor Air Quality

HEPA filters are key when it comes to improving indoor air quality. HEPA stands for high-efficiency particulate air filtration, which means it’s designed to capture particles of a certain size or larger from the air that passes through. The most common type of HEPA filter traps 99.97% of particles .3 microns or larger including dust mites, pet dander, pollen, and other allergens. Carbon filters also help to decrease odors by trapping airborne volatile organic compounds (VOCs).

Choosing the Right Type of Air Purifier

When choosing an air purifier, consider the various filtration systems available, such as HEPA filters, which can capture pollutants in the atmosphere but may not regulate humidity levels as effectively as activated carbon filters. Also, consider factors such as room size and noise level when choosing an appropriate model.

While an air purifier can help reduce dust particles and irritants that could worsen symptoms, if there is low humidity in the home this can lead to dry nasal passages and a worsening of sinus problems. Therefore, adding a humidification system alongside an air purifier may be beneficial.

Can Using an Air Purifier Exacerbate Sinus Issues?

A widely-held belief is that air purifiers can lead to nasal discomfort and sinus issues due to dryness in the passageways. However, research has shown that this is not the case. In fact, it’s low humidity levels in indoor environments that are more likely to lead to sinus problems.

Humidity is essential for nasal health. When the air lacks moisture, your nose becomes dry and inflamed, leading to issues such as sneezing or coughing. To avoid these uncomfortable side effects, keep your home’s relative humidity between 40–60%. An air purifier won’t help you maintain those levels, but it will remove dust particles from the environment which can also be a trigger for allergies or asthma attacks.

HEPA filters are commonly used in many types of air purifiers due their ability to trap even microscopic pollutants from the atmosphere. However, some people worry about these devices creating ozone, which may further irritate sensitive respiratory systems like those affected by allergies or asthma. But studies have found that HEPA-filter-based machines produce very little ozone during operation — much less than what would naturally occur outdoors.

Medication vs. Technology

Using medications to treat respiratory illnesses caused by poor indoor air quality is a popular approach. However, depending solely on medication can be counterproductive in the long run as it may lead to desiccation of nasal passages and exacerbate symptoms. Therefore, using technological advancements when possible could be the most beneficial approach for maintaining healthy immune function and well-being.

For instance, if an individual experiences occasional bouts of sinus congestion due to low humidity levels indoors, using a humidifier instead of taking antihistamines would be more beneficial for providing relief without adverse effects. Similarly, adding an air purifier equipped with HEPA filters can help remove dust particles from the environment which might cause irritation.

What Else Can You Do?

Adding a humidification system for better moisture balance indoors is one way to supplement your air purifying efforts. Dry air can be especially irritating and uncomfortable if you suffer from nasal issues such as dry sinuses, post-nasal drip, or congestion. A humidification system will help create more balanced humidity levels in your home, which can help alleviate these symptoms.

Open your windows on pleasant days to let in fresh air and expel stale air. This will help reduce the accumulation of pollutants like mold spores, smoke particles, and pet dander inside the house which could lead to long-term health issues.


Can Air Purifiers Dry Out Your Sinuses?
No. Air purifiers use filters to capture and eliminate air contaminants, providing a cleaner environment for breathing. The process of filtering does not involve removing moisture from the air. In fact, many air purifier models come with humidifying features that help maintain a comfortable humidity level indoors.

What Are the Negative Side Effects of Air Purifiers?
Air purifiers can cause increased ozone levels and noise pollution. Ozone is a pollutant that can be created when an air purifier produces high voltage to ionize the air particles. Additionally, some filters used in air purifiers contain chemicals that can release toxins into the environment if not disposed of properly. Air purifiers can result in higher energy utilization if used for extended periods.

Can Air Purifiers Be Harmful and Aggravate Health Conditions?
Some air purifiers may create ozone or other substances that can worsen existing health issues. Follow all instructions when using an air purifier and regularly clean or replace filters so it operates efficiently and safely.


Air purifiers can help reduce allergens and pollutants in the air, which may alleviate symptoms of allergies such as dry eyes and sinuses. However, an air purifier alone cannot completely eliminate these issues. Additional steps you can take include using medications when necessary, adding a humidifier, ensuring proper ventilation, and regularly dusting and cleaning surfaces.

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