OK nooblets info time im gonna start charging for this info cause it seems like nobody knows what the hell they are tslking about ok first no air conditioners do not make or produce co2 and yes you read right yeast and sugar and water do produce co2 and yes i have used it before it does work message me if u want to know the formulas and exactly what to buy i done it before it is cheap and will increase your yield get back to me i know im a pro