U.S. shipments of central air conditioners and air-source heat pumps totaled 808,394 in June, up 2 percent from June 2009, according to AHRI.

The Air-Conditioning, Heating and Refrigeration Institute also reported that shipments of air conditioners increased 2 percent to 565,322 units, up from 559,109 units shipped in June 2009. U.S. shipments of air-source heat pumps increased 6 percent to 243,072 units, up from 229,716 units shipped in June 2009.

For the year to date, combined shipments of residential central air conditioners and air-source heat pumps increased 6 percent to 2.9 million units, up from 2.7 million units shipped in June 2009. Year to date shipments of central air conditioners increased 5 percent to 1.9 million units, up from 1.8 million units shipped during the same period in 2009. The year-to-date total for heat pump shipments increased 8 percent to 989,296 units, up from 917,460 units shipped during the same period in 2009.

Residential water heaters also increased in June. U.S. shipments of residential gas water heaters increased 25 percent to 389,072 units, up from 310,495 units shipped in June 2009.  Residential electric water heater shipments increased 13 percent in June to 371,533 units, up from 328,330 units shipped in June 2009.

Commercial gas water heater shipments increased 17 percent to 7,412 units, compared with 6,320 units shipped in June 2009. Commercial electric water heater shipments increased 7 percent in June 2010, to 5,432 units, up from 5,065 units shipped in June 2009.

Warm-air furnaces were also on the rise with shipments increasing 13 percent to 229,979 units, up from 203,937 units shipped in June 2009. However, oil warm-air furnace shipments decreased 11 percent to 3,597 units in June, down from 4,027 units shipped in June 2009.