a good fan...

i hope this hasn't been asked before--what have you found is a good fan to keep the AC air moving, esp. to the bed in the back of TM? we spent 9 days in a canyon last week, and it seemed the air stayed right in the hallway.(we found ourselves finding reasons to get in the hallway! we have duct tape holding our feddars frontpiece on all around , as the latch is broken. of course, it was 90+ degrees down there. this is our first time to use the AC. we'd like a heater+ fan so it could double in the winter as backup to the noisy furnace. thanks everyone!
2swans