Primary AC Drain Line vent

[LanceMan]

Hi, a simple question. I noticed in the attic after having my a/c serviced that there is a T-vent in the primary drain line that used to be covered at the top. The a/c guy left it uncovered when he was finished and I wanted to know if I should cover it back?

Thanks, LM

[Moe Jones]

Yes

[Bubba]

Simple answer. What did your A/C guy tell you about why he left it uncovered? Bubba

[B-Hate-Me]

No