why does my air purifier turn red

why does my air purifier turn red

Why Does My Air Purifier Turn Red?

If you have an air purifier in your home, you may have noticed that sometimes the indicator light turns red. This can be concerning, as it may indicate that the air quality in your home is poor. But why does this happen? Let’s explore some possible reasons.

Dirty Filter

One of the most common reasons for an air purifier to turn red is a dirty filter. Over time, the filter in your air purifier will become clogged with dust, dirt, and other particles. When this happens, the air purifier will not be able to effectively clean the air, and the indicator light may turn red. To fix this issue, simply replace the filter.

Another possible cause of a dirty filter is not changing it often enough. Depending on the type of air purifier you have and how often you use it, you may need to replace the filter every few months. Check the manufacturer’s recommendations for your specific model.

High Pollution Levels

If you live in an area with high levels of pollution, your air purifier may turn red more frequently. This is because there are more pollutants in the air that the air purifier needs to filter out. In this case, it may be helpful to use your air purifier more often or consider upgrading to a model with a higher CADR (Clean Air Delivery Rate).

Humidity Levels

The humidity levels in your home can also affect the performance of your air purifier. If the air is too humid, the filter may become damp and less effective at capturing particles. Conversely, if the air is too dry, the filter may become too brittle and crack. Keep your home’s humidity levels within the recommended range for your air purifier.

Size of the Room

The size of the room in which your air purifier is located can also impact its performance. If the room is too large for the air purifier, it may not be able to effectively clean the air. Consider purchasing a larger air purifier or using multiple units in different areas of the room.

Presence of Pets

If you have pets in your home, their dander and fur can contribute to poor air quality. This can cause your air purifier to turn red more frequently. Make sure to vacuum and dust regularly, and consider using an air purifier specifically designed for pet owners.


If someone in your household smokes, this can also contribute to poor air quality. Cigarette smoke contains numerous harmful chemicals that can be difficult to filter out. Consider designating a smoking area outside and using an air purifier in the rest of the home.

Open Windows and Doors

If you frequently open windows and doors in your home, this can bring in outside pollutants and reduce the effectiveness of your air purifier. Try to keep windows and doors closed as much as possible, especially during times of high pollution or allergen levels.

There are many factors that can cause an air purifier to turn red. By understanding these factors and taking steps to address them, you can improve the air quality in your home and keep your air purifier working effectively.

why does my air purifier turn red

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