Air Conditioners do not produce any Co2.
They may exchange up to 20% of the air if set up to run that way but in itself it produces no by products other than heat and cold. And it actually does not produce that, it just transfers it from one area to another.

MrFixit
Oregon Green Free Reviewed by Oregon Green Free on . co2 from air conditioners? I have some plants that are budding and i want to get some co2 happening, I'm just wondering if air conditioners produce co2? :confused: Rating: 5