How much is the wattage of conventional air conditioner? All Questions › Category: Electrical Estimating And Costing › How much is the wattage of conventional air conditioner? 0 Vote Up Vote Down Chiranjeevi Noble asked 5 years ago 1 Answers 0 Vote Up Vote Down Krishna answered 5 years ago It varies from 800 watts to 1500 watts. It depends on company. Some company will manufacture low power consuming products.