4 ms·

I open the back windows not the street facing ones

• fighterpilot 5y ago
  Sure, but I just wonder about the effectiveness of a filter when we do that. If all of the air in the room is completely replaced with air from outside via the open window, then what does the filter achieve? It seems that there's a trade-off between lowering CO2 and lowering VOCs.
  • fabianhjr 5y ago
    Not all, just the rate has te be somewhat balanced, there is definitely a breeze and the air filter helps mostly with PM and indoor sources.