I would recommend wearing a mask when changing any ventilation filters, irrespective of Coronavirus.
All the dust on them contains a year's worth (or more) of all kinds of residues, chemical mainly though, as the dryness of air conditioned air will kill off viruses pretty quickly.
regards
Don't bet on it not being "active" - particularly if you have humidification
The stuff my infection control colleagues used to grow from samples out of ventilation ducts was positively frightening - not so many virus as you say, but plenty microbial from some pretty nasty families.
Wearing a good mask when dealing with any dusty product (like dry filter changes) is basic good practice (along with gloves and googles)
I would recommend wearing a mask when changing any ventilation filters, irrespective of Coronavirus.
All the dust on them contains a year's worth (or more) of all kinds of residues, chemical mainly though, as the dryness of air conditioned air will kill off viruses pretty quickly.
regards
Don't bet on it not being "active" - particularly if you have humidification
The stuff my infection control colleagues used to grow from samples out of ventilation ducts was positively frightening - not so many virus as you say, but plenty microbial from some pretty nasty families.
Wearing a good mask when dealing with any dusty product (like dry filter changes) is basic good practice (along with gloves and googles)
