How far from the wall should the air purifier be placed, and does it need doors and windows closed?
The unit should be placed more than 6 inches away from the closest wall or furniture so that the grille is not blocked. Portable air purifiers are more effective in rooms where all doors and windows are closed. (Page 5)
From the official Honeywell HPA830 Air Purifier manual, page 5
Have a follow-up question?
Answers from the official manual.
Common questions