U.S. shipments of central air conditioners and air-source heat pumps totaled 323,185 units in November 2013, up 3.6 percent from 311,819 units shipped in November 2012. U.S. shipments of air conditioners increased 0.1 percent, to 207,057 units, up from 206,891 units shipped in November 2012. U.S. shipments of air-source heat pumps increased 10.7 percent, to 116,128 units, up from 104,928 units shipped in November 2012.