ARLINGTON, Va. — U.S. shipments of central air conditioners and air-source heat pumps totaled 583,531 units in September 2016, up 19.5 percent from 488,464 units shipped in September 2015, according to the latest statistics from the Air-Conditioning, Heating, and Refrigeration Institute (AHRI). U.S. shipments of central air conditioners increased 14.2 percent to 383,526 units, up from 335,867 units shipped in September 2015. U.S. shipments of air-source heat pumps increased 31.1 percent to 200,005 units, up from 152,597 units shipped in September 2015. 

Year-to-date combined shipments of central air conditioners and air-source heat pumps increased 6.1 percent to 6,050,465 units, up from 5,701,086 units shipped in September 2015. Year-to-date shipments of central air conditioners increased 7 percent to 4,093,777 units, up from 3,824,980 units shipped during the same period in 2015. The year-to-date total for heat pump shipments increased 4.3 percent to 1,956,688 units, up from 1,876,106 units shipped during the same period in 2015.