My Philips Air Purifier does not improve the air quality

If the air quality does not improve when using your Philips Air Purifier, there might be some possible causes. See how to resolve this below.

Note: All images shown below are generic representations only; there can be some differences among specific appliances.

Packaging material has not been removed: Packaging material needs to be removed from the filters in your Philips Air Purifier. Please remove all packaging materials as shown in the below picture.
The filters are not placed correctly: All filters need to be placed in the right order in your air purifier.

Most Philips Air Purifiers contain filters as shown in the image below (some do not contain filter B).

Please check in the user manual what filters your specific air purifier model contains.
The air quality sensor is dirty or wet: The air quality sensor in your Philips Air Purifier (indicated as D in the image below) should be dry and clean. Please check, and clean it with a cotton bud if necessary.
The windows are open: If the windows are open and polluted air continues to come in from outside, your purifier might not be able to improve the air quality.

Make sure that all windows are closed.
The room is too big: The room in which you are running the air purifier is larger than the maximum size at which this air cleaner can operate effectively.

Make sure that the size of the room does not exceed the maximum size indicated for your air purifier model.
New furniture in the room: When adding new furniture to a room, the air quality might be affected by gases emitted. These gases should disappear gradually within a few weeks.

Packaging material has not been removed