I do have central air, I doubt I will be able to make any changes to the system itself. I live in a condo and I doubt my landlord would allow it, he doesn't even know about me keeping and breeding BPs. Do you know if blocking off the vent in the room like I mentioned earlier would provide any help at all? I already sealed off the bottom of the door so no air or humidity escapes. I'm just looking for cheap options that I can get rid of when I eventually leave this place and get my own house that I can do whatever I want to.