Best Office Air Purifiers: What to Look For
The air in a shared office says something about how much care goes into that space — even before anyone consciously notices it. Here’s what actually matters when choosing a purifier, beyond marketing claims.
Key specifications that matter
CADR rating
Clean Air Delivery Rate should be matched to room size — an undersized unit won’t meaningfully improve air quality regardless of filter grade.
HEPA filtration
True HEPA captures 99.97% of particles down to 0.3 microns — check for the “True HEPA” designation, not just “HEPA-type.”
Noise level
Below 50db is generally acceptable for open-plan offices without becoming a distraction at working speed.
Filter replacement cost
Factor ongoing filter costs into total cost of ownership, not just the upfront unit price.
Filtration removes airborne particles passing through the unit but doesn’t treat surfaces. For continuous surface and air treatment together, see the Eco Pure Room device range — many facilities run both in combination. See our guidance on purifiers by office size next.
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