Yes, by expelling the "bad" air an A/C will draw new air into the room. House air is usually sufficient as a source of CO2. I'm lucky enough to be able to keep my door slightly open and my grow room exhaust draws that fresh air into my grow room.
TY MR MC for confirming this Time to try and get an Ac into the room with some plywood hopefully I can rig it up this weekend and order the beans and hempy stuff soon
Time to try and get an Ac into the room with some plywood hopefully I can rig it up this weekend and order the beans and hempy stuff soon