AirDoctor Air Purifier

The AD3500 is designed to purify the air in rooms up to 630 square feet, circulating the air twice per hour at that capacity. For smaller spaces, it will cycle through the air even more frequently, resulting in faster purification.

While standard HEPA filters are rated to capture particles down to 0.3 microns, the UltraHEPA filter is tested to capture 99.99% of particles as small as 0.003 microns. This allows it to trap ultra-fine pollutants, including certain viruses, bacteria, and smoke particles that standard filters might let pass through.

The auto-mode is highly functional and relies on a built-in air quality sensor to monitor your environment in real-time. When it detects an increase in pollutants, it automatically increases the fan speed to clean the air faster, then dials back down to a quieter setting once the air quality improves.

Yes, the AD3500 features WhisperJet fans designed specifically for low-noise operation. On its lowest settings, it produces a very soft, unobtrusive white noise that most users find easy to sleep through.

No, the mobile app is an optional feature for remote control and advanced monitoring. You can fully operate the unit using the manual controls on the device itself, though the app provides added convenience for scheduling and tracking air quality data.

Filter life depends on your specific environment, such as the presence of pets or heavy dust, but generally, the pre-filter should be cleaned regularly, while the Carbon/VOC and UltraHEPA filters typically require replacement every 6 to 12 months.