Air ioniser

The particles in turn are then attracted to any nearby earthed (grounded) conductors, either deliberate plates within an air cleaner, or simply the nearest walls and ceilings.

The frequency of nosocomial infections in British hospitals prompted the National Health Service (NHS) to research the effectiveness of anions for air purification, finding that repeated airborne acinetobacter infections in a ward were eliminated after the installation of a negative air ioniser — a promising result, although more evidence is necessary to determine if these results can be repeated.

[4] Positive and negative ions produced by air conditioning systems have also been found by a manufacturer to inactivate viruses including influenza.

Ozone generators are optimised to attract an extra oxygen ion to an O2 molecule, using either a corona discharge tube or UV light.

[8] At concentrations that do not exceed public health standards, ozone has been found to have little potential to remove indoor air contaminants.

[12] A higher daily average than 0.1 ppm (100 ppb, 0.2 mg/m3) is not recommended and can damage the lungs and olfactory bulb cells directly.

No consistent influence of positive or negative air ionization on anxiety, mood, relaxation, sleep, and personal comfort measures was observed.

Consumer Reports gave the Ionic Breeze and other popular units a "fail" because they have a low clean air delivery rate (CADR).

The Sharper Image claimed that this test was a poor way to rate the Ionic Breeze, since it does not take into account other features, such as 24-hour-a-day continuous cleaning, ease of maintenance, and silent operation.

[18] Air ionisers are often used in places where work is done involving static-electricity-sensitive electronic components (like in microelectronics cleanrooms), to eliminate the build-up of static charges on non-conductors.