Im guessing as long as the rest of the room is sealed good and you at least attempt to get the inside of the ac sealed as best as possible, then you would be fine.
If not, you have a serious security issue you would need to take care of first as it should not have a full-on exhaust thru the ac (stinky stinky). In other words....it shouldnt leak the whole room's air volume quick enough to make it not worth while. (hope i worded that right).
I think co2 is like $25 for a 20lb which gets about a whole run on 2k so based on what i witnessed at an old friends house. Even if you had to replace it twice a run, its only $25 more. Dont forget to factor in costs of co2 controller/timer/solenoid or whatever.
If not, you have a serious security issue you would need to take care of first as it should not have a full-on exhaust thru the ac (stinky stinky). In other words....it shouldnt leak the whole room's air volume quick enough to make it not worth while. (hope i worded that right).
I think co2 is like $25 for a 20lb which gets about a whole run on 2k so based on what i witnessed at an old friends house. Even if you had to replace it twice a run, its only $25 more. Dont forget to factor in costs of co2 controller/timer/solenoid or whatever.