Comment by elhudy

> So, even though nitpicks are in order, Wirecutter's pick costing $100 vs the $70 IKEA will clean the air 3.3 times as efficiently?? That seems like a good deal. Even if it uses more electricity and more expensive filters, I'm not going to want to purchase 3 units when 1 will do. (This efficiency difference will obviously extend to large rooms in the same way!)

The authors point is that if it takes 3 min to clean the room vs 1 min to clean the room, there’s essentially no difference. The efficiency just translates into time, and hardly much at that. Both will clean the room.