Do Ionizers Release Ozone? An Expert's Perspective

When it comes to air purification, one of the most important considerations is the potential for ozone production. Many ionizer-type purifiers generate ozone, which can be hazardous to human health. Ozone, a lung irritant, is created both indirectly and directly by ion generators and ozone generators. The indirect production of ozone is a cause for concern, but the direct introduction of a lung irritant into indoor air is even more worrying.

It's important to note that there is no difference between the ozone present in outdoor smog and the ozone produced by these devices. Under certain conditions of use, ion generators and other air filters that generate ozone can produce levels of this lung irritant that exceed levels considered safe for human health. A small percentage of air purifiers that claim to have health benefits may be regulated by the FDA as medical devices, with a limit of 0.05 parts per million of ozone. Ozone can be used to reduce odors and pollutants in unoccupied spaces, but the levels needed to achieve this are above what is generally considered safe for humans.

However, ionizers for commercial use usually include an ozone layer suppression system. When ionized particles bind to particles suspended in the air, they become too heavy to float in the air and fall to the ground. Air purifiers with ionizers are generally safe because ionizers don't have enough energy to be harmful to the body.

So what do you think of the Xiaomi Smart Air Purifier Pro 4?

(a product with negative air ionization) Does this product have an ozone emission problem? I recently bought an ionized air purifier with a HEPA filter and it has started to produce a sweet smell, almost like that of baked goods. To prevent my roommate from smoking second and third hand, I plan to keep the ionizer on for 30 to 40 minutes when no one is in the room and then turn it off before anyone enters.

The safest option would be to avoid any air purifier with an ionizer of any kind or that alters the chemistry of the air in any way. Air ionizers rely on electrically charged air molecules, or ions, to do the same job.

The Aera Max DX5 air purifier

has PlasmaTrue technology: it creates an ionized field to help safely remove pollutants from the air. However, ozone is very harmful, so you should install an ionizer that complies with the UL 2998 standard, which basically states that this product does not produce ozone.

Plant-based negative-ion air ionizers are being developed that operate under pulsed electric field (PEF) conditions and produce millions of ions per cubic meter. Air ionization has benefits that would be difficult to achieve with a standard air purifier, but those benefits also carry potential risks. Ultimately, both the ionizer and the HEPA filter work together to remove particles that float in the air. As an expert in air purification systems, I can confidently say that when it comes to choosing an air purifier with an ionizer, safety should always be your top priority.

It's important to make sure that any device you purchase meets UL 2998 standards and does not produce any ozone or other harmful substances. Additionally, you should always follow manufacturer instructions when using your device and make sure you turn it off when no one is in the room.

Nancy Pickell
Nancy Pickell

Evil travel scholar. Extreme webaholic. Lifelong internet buff. Total beer specialist. Unapologetic bacon maven. Wannabe internet ninja.