Combined U.S. factory shipments of central air conditioners and air-source heat pumps for October 2007 totaled 393,652, jumping 9 percent from October 2006, according to the ARI.

The Air-Conditioning and Refrigeration Institute also reported that the year-to-date combined U.S. factory shipments totaled 5.7 million, down 10 percent from the same period last year.

Heat pump shipments for October totaled 117,224, down 4 percent compared with October 2006 shipments. Year-to-date heat pump shipments totaled 1.6 million down 11 percent from the same period last year.