The best air purifier for bacteria and viruses typically uses HEPA (High Efficiency Particulate Air) filters, which are able to trap small particles, including bacteria and viruses, while the activated carbon filters help remove volatile organic compounds (VOCs) and other odors from the air.
HEPA filter-based air purifiers produce no harmful by-products. They can effectively remove allergy-causing and toxic substances from the air, leaving only fresh air behind.
Additionally, some air purifiers may also incorporate ionizer or UV-C light technology, which can effectively kill viruses and bacteria.
Both ionizer and UV-C light technology in air purifiers have the potential to create ozone as a byproduct. Ozone is a reactive form of oxygen that can have both beneficial and harmful effects, depending on the concentration and duration of exposure. In low concentrations, ozone can help to remove odors and pollutants from the air. However, at higher concentrations, ozone can be harmful to human health and can irritate the eyes, lungs, and respiratory system.
How to maintenance UV-C bulb in air purifier?
UV-C bulbs in air purifiers require regular maintenance to ensure that they continue to function properly and effectively. Here are some general guidelines for maintaining UV-C bulbs in air purifiers:
- Check the bulb regularly: UV-C bulbs typically have a lifespan of around 9-12 months with continuous use. Check the manufacturer’s instructions to determine the recommended replacement interval. Some air purifiers come with an indicator that will let you know when it’s time to replace the bulb.
- Turn off the air purifier before replacing the bulb: Always turn off and unplug the air purifier before attempting to replace the UV-C bulb. This will prevent any risk of electric shock.
- Handle the bulb carefully: UV-C bulbs are fragile and should be handled with care. Wear gloves and avoid touching the bulb with your bare hands, as oils from your skin can reduce its effectiveness.
- Clean the bulb and chamber: Use a soft, dry cloth to gently clean the bulb and the inside of the chamber. Do not use water or cleaning agents, as this can damage the bulb and reduce its effectiveness.
- Replace the bulb when necessary: When the UV-C bulb reaches the end of its lifespan, replace it with a new one. Follow the manufacturer’s instructions for replacing the bulb, and be sure to dispose of the old bulb properly.
How to maintenance ionizer in air purifier?
Ionizers in air purifiers are designed to attract and remove particles from the air by creating a static charge. Here are some general guidelines for maintaining an ionizer in an air purifier:
- Clean the ionizer plates: Over time, the ionizer plates in an air purifier can become dirty and less effective at attracting particles from the air. Consult the manufacturer’s instructions to determine how often the ionizer plates should be cleaned. Typically, this will involve removing the plates and wiping them down with a soft, damp cloth.
- Keep the air purifier clean: A clean air purifier will be more effective at removing particles from the air, so it’s important to keep it free from dust and debris. Vacuum the outside of the air purifier regularly and wipe it down with a soft, damp cloth.
- Replace the ionizer plates when necessary: If the ionizer plates become damaged or worn, they may need to be replaced. Consult the manufacturer’s instructions to determine when and how to replace the ionizer plates.
- Turn off the ionizer when necessary: Some people may be sensitive to the charged particles produced by ionizers, so it may be necessary to turn off the ionizer function if you experience any discomfort. Additionally, if you are using the air purifier in a room with electronics that are sensitive to static electricity, it may be necessary to turn off the ionizer function to prevent interference.
Regular maintenance of the ionizer or UV-C bulb in your air purifier is important for ensuring that it continues to effectively kill bacteria and viruses. Be sure to follow the manufacturer’s instructions for maintenance and replacement, and don’t hesitate to contact the manufacturer if you have any questions or concerns about maintaining your air purifier.
Best air purifier for bacteria and viruses with HEPA and Ionizer technology
* * As an Amazon Associate I earn from qualifying purchases.

SHARP FPK50UW – Air Purifier for Medium-Sized Rooms, Bedroom, or Office.
AHAM CADR:
- Smoke: 167
- Dust: 171
- Pollen: 188
Noise (dBA): 51(Max) / 22 (Low)
Room Coverage: 259 ft² / 24 m²
Voltage / Frequency: 120V / 60Hz

Winix HR900, Ultimate Pet 5 Stage True HEPA Filtration Air Purifier
CADR:
- Smoke: 194
- Dust: 200
- Pollen: 220
Noise (dBA): 27 (Low)
Room Coverage: 300 ft² / 28 m²
Voltage / Frequency: 120V / 60Hz

Coway Airmega AP-1512HH(W) True HEPA Purifier
CADR:
- Smoke: 233
- Dust: 246
- Pollen: 240
Noise (dBA): 53.8 (High) / 24.4 (Low)
Room Coverage: 361 ft² / 33 m²
Voltage / Frequency: 120V / 60Hz
Best air purifier for bacteria and viruses with HEPA and UV-C technology

Germ Guardian AC4825E – Air Purifier with HEPA 13 Filter, Removes 99.97% of Pollutants, Covers Large Room up to 743 Sq. Foot Room in 1 Hr, UV-C Light Helps Reduce Germs, Zero Ozone Verified
CADR:
- Smoke: 99
- Dust: 118
- Pollen: 125
Noise (dBA): 61.2 (High) / 44.2 (Low)
Room Coverage: 153 ft² / 14.2 m²
Voltage / Frequency: 120V / 60Hz

Germ Guardian AC5900WCA 21” 4-in-1 True HEPA Filter Air Purifier for Home, Large Rooms, UV-C Sanitizer, Filters Allergies, Smoke, Dust, Pet Dander, & Odors
CADR:
- Smoke: 235
- Dust: 239
- Pollen: 237
Noise (dBA): 60 (High) / 40 (Low)
Room Coverage: 338 ft² / 31.4 m²
Voltage / Frequency: 120V / 60Hz
Note that the standard electrical voltage in the United States is 110V-120V, while in most countries in Europe it is 220V-240V. The electrical voltage can vary slightly within each region, but the standard voltage is usually within these ranges. It’s important to note that some appliances and electronics may not be compatible with the voltage in a different region, so a voltage converter may be necessary.