Do air purifiers help your lungs?

Author: Ms. Kirsten Johnston  |  Last update: Thursday, December 4, 2025

Improvements were reported in both blood pressure levels and lung functions among the students. Another study found that indoor HEPA air filters improved respiratory health in those with asthma. However, doctors don't have any long-term data that points to air purifiers reducing strokes, heart attacks or death rates.

Do air purifiers improve lung health?

Adding air purifiers into the home directly improves cardiac autonomic function and respiratory health for patients living with chronic obstructive pulmonary disease (COPD).

Is there a downside to air purifiers?

What are the downsides of air purifiers? There aren't a lot of downsides to having an air purifier in your home aside from the financial investment. Many ionizers, especially older models, can generate ozone when they are operating, which is known to exacerbate asthma.

Why do I breathe better with an air purifier?

Air purifiers are designed to attract and trap airborne particles as they are sucked into a filter media. What exhausts out the other side is fresher air, free of health-affecting particles that would otherwise be breathed in and potentially accumulate in our body and cause yucky symptoms.

Do doctors recommend air purifiers?

However, the benefits of an air purifier only go so far. Medical professionals suggest prioritizing maintaining a clean home and frequently sanitizing frequently used surfaces. Air purifiers should just be an accessory to your cleaning routine, not a priority.

Air Purifiers: Do They Actually Work?

What are the side effects of air purifiers?

Specific effects may include throat irritation, coughing, chest pain and shortness of breath, as well as an increased risk of respiratory infections. Some ozone air purifiers are made with an ion generator, sometimes called an ionizer, in the same unit. You can also buy ionizers as separate units.

Do air purifiers help with congestion?

Improve the symptoms of nasal congestion

Using a high-quality air purifier to reduce indoor allergens like dust and dust mites, pollen, and pet hair and dander provides significant relief for those suffering from irritation of the nasal mucosa and other sinus symptoms.

Is it healthy to sleep with air purifier?

Recent research by researchers from the University of Reading and the University of Sussex, commissioned by Dyson, has found that using an air purifier can have a positive impact on sleep outcomes.

How long does it take to see the effects of an air purifier?

In a typical home environment, an effective air purifier can start to reduce these pollutants within 30 to 60 minutes. Noticeable improvements in air quality are often observed within a few hours, with significant reductions occurring over 24 hours of continuous use.

What is better for breathing humidifier or air purifier?

While a humidifier can add moisture to the air, it is not designed to remove pollutants or allergens. If you want to improve the air quality in your home or office, an air purifier is a better choice.

What is the dark side of air purifiers?

Ozone-Generating Air Cleaners

One mechanism of damage results from ozone-olefin reactions, and another from ozone reacting with electron donors (such as glutathione). Inhalation of relatively small amounts of ozone can cause coughing, chest pain, throat irritation, and shortness of breath.

Where should you not put an air purifier?

Ensure your air purifier has enough clearance around it to function optimally. Avoid placing it behind furniture or in tight corners where airflow might be restricted. Ideally, there should be at least 3-5 feet of clear space around the unit to allow for unimpeded air intake and output.

Do air purifiers actually clean the air?

The reality is, air purifiers offer an effective option for helping remove particles from the air that circulates in your home.

What do ionizers do to your lungs?

These devices work by using charged ions to make airborne particles stick to surfaces, which helps the particles get captured more easily by filters. A big downside of ionizers is that they cause particles to stick inside our lungs! That means ionizers might make people more likely to get infected.

Do air purifiers help with coughing?

Can air purifiers help alleviate coughing symptoms? Yes! Air purifiers can help alleviate symptoms of many respiratory conditions including coughing, wheezing, asthma and COPD symptoms (asthma attacks), shortness of breath, and more.

What are the four stages of COPD?

There are four distinct stages of COPD: mild, moderate, severe, and very severe. Your physician will determine your stage based on results from a breathing test called a spirometry, which assesses lung function by measuring how much air you can breathe in and out and how quickly and easily you can exhale.

Should you leave air purifier on all day?

However, in general, the duration of use required depends on the size of your space and the amount of indoor pollution (which varies throughout the year). This is why most manufacturers will recommend you to leave your air purifier running all day, especially if it comes equipped with an automatic setting.

Will an air purifier help you breathe better?

Simply put, improved indoor air quality will help you breathe better. Air cleaning devices such as air purifiers help improve the quality of your indoor air by removing or reducing pollutants and allergens. These substances may worsen symptoms of allergies or asthma.

How do I know if an air purifier is helping?

A noticeable reduction in the amount of dust on surfaces indicates that the air purifier is effectively removing dust particles from the air. Consistently lower dust levels across multiple days or weeks further confirm the effectiveness of the device.

How long does a room stay clean after air purifier?

When you have a large indoor space, you may need to run the air purifier longer. But after you run the air purifier on its highest setting for an hour or two, you may its lowest speed. This will help keep the air clean all day. As mentioned above, you may run the machine all night without any worries.

Do air purifiers use a lot of electricity?

Room air cleaners are portable, electric appliances that remove fine particles, such as dust and pollen, from indoor air. A standard room air cleaner, operating continuously, uses approximately 450 kWh per year in electricity. This is more than the energy used by some new refrigerators!

Should an air purifier be on the floor?

For this reason, the equipment can stand in the living room during the day, while in the bedroom at night. Do not forget about the height of the position of the purifier. Specialists recommend placing the device on the floor, because it is near the ground that there is a higher concentration of pollutants.

Is there anything bad about air purifiers?

Air Purifiers That Use Ozone Are Bad for Your Health

Even more concerning is that symptoms can disappear after repeated chronic exposure, making people unaware of the damage being done to their respiratory systems. But, even small amounts of ozone can be harmful.

Which is better for sinus humidifier or air purifier?

Choosing Air Purifier vs Humidifier for Sinus

A purifier would do wonders when it comes to fighting against sinus allergies. If you wish to, you may use both, but an air purifier will remove up to 99% of the dust, pollen, and other airborne particles from the air.

What kind of air purifier is best?

Our Top Picks for the Best Air Purifiers:
  • Best Overall Air Purifier: Coway Airmega True HEPA Purifier, $225.
  • Best Runner-Up Air Purifier: Coway Airmega 250 Smart Air Purifier, $319 $290.
  • Most Versatile Air Purifier: Dyson Purifier Humidify+Cool Formaldehyde, $806.

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