Archive · 11 Dec 2025

Key Specifications to Consider When Buying an Air Purifier

Key Specifications to Consider When Buying an Air Purifier

When buying an air purifier, it's important to look at three main things: HAC, which includes HEPA and activated carbon filters, and CADR.

The HEPA filter catches tiny particles like dust and smoke, while the activated carbon filter absorbs gases and bad smells.

CADR tells you how fast the purifier can clean the air.

For a 150 sq ft room, you should look for a purifier with a CADR of around 300.

Also, check the filter life, noise levels, placement, power consumption, and if it has a real-time AQI display to see if it's working well.

Sources