Combined U.S. factory shipments of central air conditioners and air-source heat pumps for June totaled 947,268, up 3 percent for the same month last year, according to the ARI.

The Air-Conditioning and Refrigeration Institute also reports that the year-to-date combined U.S. factory shipments totaled 3.6 million, down 13 percent from the same period last year.

Heat pump shipments for June totaled 244,618, down 0.4 percent from June 2006 shipments. Year-to-date heat pump shipments totaled 1 million, down 12 percent from the same period last year.