Be aware that according to the original Wirecutter tests on low mode it's significantly worse than doing nothing (filters ~6% of smoke particles vs ~15% that wo

Be aware that according to the original Wirecutter tests on low mode it's significantly worse than doing nothing (filters ~6% of smoke particles vs ~15% that would have settled out if the fan inside wasn't disturbing the air), and it's significantly worse than $100 filters on high mode (filtering ~60% vs ~90% of smoke particles)