<P> Automobile air conditioning (also called A / C) systems use air conditioning to cool the air in a vehicle . </P> <P> A company in New York City in the United States first offered installation of air conditioning for cars in 1933 . Most of their customers operated limousines and luxury cars . </P> <P> In 1939, Packard became the first automobile manufacturer to offer an air conditioning unit in its cars . These were manufactured by Bishop and Babcock Co, of Cleveland, Ohio . The "Bishop and Babcock Weather Conditioner" also incorporated a heater . Cars ordered with the new "Weather Conditioner" were shipped from Packard's East Grand Boulevard facility to the B&B factory where the conversion was performed . Once complete, the car was shipped to a local dealer where the customer would take delivery . </P> <P> Packard fully warranted and supported this conversion, and marketed it well . However, it was not commercially successful for a number of reasons: </P>

When did they put air conditioning in cars