What is the lifespan of an air purifier?

Author: Ms. Pearline Blanda  |  Last update: Saturday, September 20, 2025

The lifespan of an air purifier can vary depending on several factors, including the quality of the device, frequency of use, maintenance, and the type of filtration system it employs. On average, air purifiers can last between 5 to 10 years.

How often should I replace my air purifier?

How frequently does your air purifier need an air filter replacement? It's recommended that you change your filter every 12 months. If you run your air purifier frequently or are experiencing a lot of indoor air pollution, you may need to change the filter more often.

Do air purifiers wear out?

The more frequently you use your air purifier, the faster the filter will wear out. For homes with high levels of pollutants or for individuals with allergies or respiratory issues, running the purifier continuously may be necessary, which can shorten the filter's lifespan.

What is the life expectancy of an air purifier?

That's a minimum number, and means the purifiers would run a minimum of 4-5 years if running them for 6 hours per day. Typically, the motors last much longer. We've seen Smart Air purifiers in use 7 years after they were purchased, still working without issue.

Can an air purifier burn out?

Air purifiers that do not have a good quality cooling system can overheat. This can lead to the motor burning out, which can damage your air purifier. Overheating can cause damage to your device as well as make it less efficient at cleaning the air.

The DARK TRUTH about Air Purifiers

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.

Is it OK to leave air purifier on all night?

It's perfectly safe to keep the device running continuously, and the amount of energy it consumes is very small.

What are the disadvantages of air purifier?

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.

How do I know if my air purifier filter needs replacing?

Signs Your HEPA Filter Needs Replacing
  1. The Filter is Damaged. This seems fairly obvious, but it's not something you'd see unless you were looking for it. ...
  2. Power Consumption Rises. ...
  3. Allergens are High. ...
  4. Dust and Dirt Build Up.

Should you run air purifier all day?

To best harness your high-quality air purifier's capabilities, make sure to turn on your device daily. Most HEPA air purifiers consume a minimal amount of energy - around 50 to 100 watts of energy every hour based on the airflow speed.

Can air purifiers stop working?

When filters become too clogged, your air purifier might stop working to prevent damage. You can usually spot this issue if the airflow decreases or if you notice visible dirt on the filters. Check and replace your filters as recommended by the manufacturer.

What is the best air purifier?

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.

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!

Can too many air purifiers be bad?

If you have more air purifiers than is necessary, you do stand the chance of over-purifying the air in your home and using more energy than necessary.

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.

Can I vacuum an air purifier filter?

You can rinse the filter in water, tap excess dust off of it or remove some dust with a vacuum, but this can definitely damage the mesh of fibers that allows the filter to remove particles from the air. Even if the filter looks undamaged, some of the fibers will be broken or stretched out.

Are air purifiers worth it?

According to Li, air purifiers are most important for people who are sensitive to particles because they have asthma, allergies to pollen or dust, or cardiovascular issues, as well as children, pregnant people and the elderly.

Can I just clean my air purifier filter?

Some air purifiers have separate filters, so you can clean them individually and buy each one as it needs replacing, but others have an all-in-one filter cartridge which can mean you'll need to replace the entire filter each time.

How do I test my air purifier?

To test a whole-home air purifier, you must make the space smell. Cook the smelliest food you can think of, let the wet dog indoors, or burn potent incense that produces a noticeable odor. Then, turn the HVAC system fan on and notice as the odor dissipates. That is proof the air purifier is working.

What do doctors say about air purifiers?

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.

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.

Do air purifiers reduce dust?

When used correctly, air purifiers with HEPA filters can effectively reduce dust and other allergens in the air. They may be particularly useful if you're allergic to dust mites or pollen or if allergens trigger your asthma. You can choose from many types of air purifiers.

Where is the best place to put an air purifier?

Keep your device away from moisture or areas with high humidity. Place your device at least 6 inches from walls, furniture, or other items while in use. Place your air purifier near the most likely source of indoor air pollution. Consider investing in an air purifier that shuts off automatically with a timer.

Does an air purifier help with mold?

Mold is an obvious health risk in any home, but investing in an air purifier can help limit your exposure. The best among them will ideally offer HEPA-level filtration, with this level of filtration being able to trap up to 99.97% of airborne particles down to 0.3 microns in diameter.

How long does a room stay clean after an 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.

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