ARLINGTON, Va. — The Air Conditioning, Heating, and Refrigeration Institute released its March 2014 U.S. heating and cooling shipment data. Central air conditioner and air-source heat pumps totaled 638,572 units in March 2014, up 11.9 percent from 570,434 units shipped in March 2013.
Individually, air conditioner shipments increased 9.7 percent, and air-source heat pumps increased 16.4 percent.