What is Ionisers & ozone?
Extra charged-particle features.
Short answer
Prefer purifiers where the ioniser can be switched off.
Ionisers & ozone when buying a air purifier
Extra charged-particle features.
Why it matters: Some ionisers produce ozone, which irritates lungs.
Look for: Prefer purifiers where the ioniser can be switched off.
Full Air Purifier buying guide