At its most basic level, an air cleaner filters out the particles that cause irritation, such as pollen, spores, dust, and other contaminates. In order for any air cleaner to work correctly, the particles need to pass through it. Hence, if the particles are not in the air stream (for example, dust on furniture), an air cleaner won't remove them. However, a good air cleaner will:
- Remove allergy-causing particles that pass through it.
- Perform well consistently.
- Be economical to maintain.
- Handle a large volume of air efficiently.
