Question about Recirculate button.

[dr. d]

How about opening windows once in a while esp kung nasa area with fresh air?

Sent from my SM-G930F using Tapatalk

that would also work. in fact, it's probably even more efficient at refreshing the air inside.
but if it were raining, the rain would also get in.
more important, however, if one did that, the madlang pipol outside might think sira ang aircon mo!
heh heh heh.