WINIX 5510 True HEPA Air Purifier

Overview

The Winix 5510 is a True HEPA air purifier built for large rooms, AHAM-tested to clear air in spaces up to 1,881 square feet within an hour. Suits anyone managing pet dander, smoke, or cooking odor in an open-plan living area or large bedroom.

Winix built the 5510 as the app-connected successor to its long-running 5500-2, keeping the same HEPA-plus-carbon filter stack while adding Wi-Fi control. AHAM's independent test rated it at 392 square feet; the 1,881 sq ft in one hour figure on the box is Winix's extrapolation from that rating using the standard multiple-air-exchange method, not a separate test of a room that size. UL certification covers electrical safety, not filtration performance.

• True HEPA captures 99.99% down to 0.01 microns
• AHAM-certified at 392 sq ft, rated to 1,881 sq ft per hour
• Washable pre-filter plus odor-control carbon filter
• Winix Smart App and automatic sleep mode

Who it's for

Works for households that need one purifier to cover an open living room or a large bedroom rather than running several small units. Less suited to anyone wanting a compact unit for a small office or a purifier with no companion app.

Pros and cons

Performance notes

The True HEPA filter is rated to capture 99.99 percent of airborne particles down to 0.01 microns, backed by a washable mesh pre-filter that catches larger debris first to extend the HEPA filter's life. A separate carbon filter targets gases and odors rather than particulates, which is why Winix lists it alongside, not instead of, the HEPA stage. The built-in air quality sensor drives Auto Mode, adjusting fan speed to conditions in real time, and the unit is rated at 23.5 dB on its lowest speed.

Specifications