What are these vents for?
We live in southern CA and our house is 40 yrs old. We have never figured out what these vents are used for. We would like to cover them over now and place our bbq below this overhang.
The dirty vents clearly don't draw air and the screens are not stucco'd in. When the house was constructed, there were two HVAC units. One in the downstairs and one in the attic. Over the course of time, we've relocated and replaced the downstairs unit. Both are now in the attic.
Would these vents have anything to do with the HVAC system? Would you see any harm in covering them over?
I certainly don't want bbq smoke wafting up and into the house!
Thanks in advance for any ideas!