Best Air Purifiers for Outdoor

for the first few days, every time i opened my office door and let in outside air, the sensor would turn orange or red and then gradually move back down to green as the unit cleaned the air.

i find it a great way to drown out outside noises.

-outside housing of the unit feel more rigid and slightly better construction, no vibration of any kind.

i was hesitant to order the unit because it seemed somewhat "sketchy" outside of amazon reviews.

i find it a great way to drown out outside noises.

-outside housing of the unit feel more rigid and slightly better construction, no vibration of any kind.

despite the lack of outside air, the biogs keeps the air smelling fresh all summer.

-outside housing of the unit feel more rigid and slightly better construction, no vibration of any kind.

since i did not want to wait months to see my utility bill or stand outside and watch my meter, i bought a power meter (p3 international p4460 kill a watt ez electricity usage monitor) thru amazon

~10,000 particles of 0.5 micron particles detected in 10 seconds in outdoor air pumped at 0.1 cubic feet per min.