Today I changed the filters on one of my air purifiers. It’s a Philips AC2729/50 from the 2000i series, which combines the functions of a purifier and humidifier.
This is what the HEPA filters look like side by side, after 4000 hours of operation in the bedroom, mostly in SLEEP mode. Think of it as a room used only when sleeping; it is vacuumed every few days, and we are nonsmokers.
This is the air we breathe in Bucharest and Ilfov!
