- to ventilate or not to ventilate

[Guest guest]

Someone posted here that they don't air out their house as they heard

there is alot of mold outdoors. I bring fresh air in through fresh

air vents that I have MERV 11 filters on. However sometimes I still

feel the need for fresher air and open up a couple of doors to get

cross ventilation. Do you do this in your setup or do you keep

everything outdoors out and just run your air cleaners. There is the

issue of living in oxygen rich air too.

Thanks, barb b