Installing return air grills in bedroom doors lets filtered air circulate back to your HVAC system instead of getting trapped when doors close. Without them, your air conditioner can't pull air through the filter, leaving you with stagnant, unfiltered air.
And you can also install a return grill in each spot. That way, when you shut that door to the bedroom to get privacy, you don't have a challenge getting air out of the room. So another big challenge, if you're uncomfortable in your house and you have closed doors, those need to be open. They need to stay open. I understand privacy, I understand all that, But the air needs to get back to the unit, and you want it to get back to you, and you want to go through the filter and be filtered air in that system and not air from just anywhere. You want to control what you can control.
How to Prevent Mold and Odor in Your Air Conditioning System with UV Light #shorts
