Do Air Purifiers Kill Viruses?

Air purifiers are often touted as tools to capture and neutralize airborne viruses, including COVID-19. Is this claim backed by science? The answer is **yes**—but understanding *how* requires diving into the technology behind these devices.

---

Key Technologies in Air Purifiers

1. HEPA Filters

 - What they do: HEPA filters trap particles as small as **0.3 microns*(99.97% efficiency). While COVID-19 particles measure **0.06–0.14 microns**, they’re captured via **Brownian diffusion**—a zigzag motion caused by gas molecules, which forces even sub-0.3 micron particles to stick to filter fibers.

 - **Limitation**: Viruses remain viable on HEPA filters for **48–72 hours** before dying.

2. **UV-C Light**

 - **How it works**: UV-C light disrupts viral DNA/RNA, rendering them inactive. Effective systems (like **HisoAir’s**) integrate UV-C lamps with HEPA filters to sterilize trapped particles.

 - **Critical factors**: UV intensity and exposure time determine efficacy. Pass-through UV alone may not kill viruses.

3. **Ionizers & Other Filters**

 - **Ionizers**: Charge particles to bond them to surfaces (e.g., walls), reducing airborne spread. However, they emit **ozone**, which can irritate lungs and worsen asthma.

 - **Activated carbon/photocatalytic filters**: Remove odors, VOCs, and some microbes via adsorption or oxidation.

---

**Why Air Purifiers Matter for COVID-19**

The CDC recognizes airborne transmission as a primary route for COVID-19, especially in:

- **Enclosed spaces** with poor ventilation.

- **Prolonged exposure** to respiratory droplets.

- **Inadequate air handling systems** in buildings.

With remote work and lockdowns increasing indoor time, air quality has become critical. Purifiers help mitigate risks where ventilation is limited.

---

**Safety & Effectiveness**

- **HEPA + UV-C combos** (e.g., HisoAir’s 4-stage system) are safest and most effective.

- **Avoid ozone-generating devices**: Ozone can harm respiratory health and isn’t proven to kill viruses.

---

 **Conclusion**

Air purifiers with **HEPA filters and UV-C technology** are scientifically validated to reduce airborne viral loads, including COVID-19. While HEPA traps particles, UV-C ensures they’re neutralized. For bulk purchases of H13 HEPA UV air purifiers, contact **Air Summer**—a trusted OEM/ODM with ISO certification and 4 years of expertise.

*Your breath deserves clean air. Choose wisely.*