According to the Air-Conditioning, Heating, and Refrigeration Institute (AHRI), commercial-gas-water-heater shipments decreased 11 percent in October 2010 to 5,333 units, compared with 6,017 units shipped in October 2009. Commercial-electric-water-heater shipments decreased 4 percent in October 2010 to 4,366 units, down from 4,543 units shipped in October 2009.

Year-to-date, U.S. shipments of commercial gas water heaters increased 4 percent to 65,824 units, compared with 63,517 units shipped during the same period in 2009. Year-to-date, commercial electric water heater shipments increased 3 percent to 49,222 units, up from 47,708 units shipped during the same period in 2009.

Warm-Air Furnaces

U.S. shipments of gas warm-air furnaces for October 2010 decreased 7 percent to 219,677 units, down from 236,599 units shipped in October 2009. Oil warm-air furnace shipments decreased 20 percent to 5,745 units in October 2010, down from 7,163 units shipped in October 2009.

Year-to-date, U.S. shipments of gas warm-air furnaces increased 13 percent to 1.9 million units, compared with 1.7 million units shipped during the same period in 2009. Year-to-date, U.S. shipments of oil warm-air furnaces increased 6 percent to 43,391 units, compared with 40,867 units shipped during the same period in 2009.

Central Air Conditioners and Air-Source Heat Pumps

U.S. shipments of central air conditioners and air-source heat pumps totaled 255,821 units in October 2010, down 12 percent from 292,278 units shipped in October 2009. U.S. shipments of air conditioners decreased 16 percent to 162,363 units, down from 193,890 units shipped in October 2009. U.S. shipments of air-source heat pumps decreased 5 percent to 93,458 units, down from 98,388 units shipped in October 2009.

Year-to-date, shipments of central air conditioners decreased 2 percent to 3 million units, down from 3.1 million units shipped during the same period in 2009. The year-to-date total for heat-pump shipments increased 5 percent to 1.5 million units, up from 1.4 million units shipped during the same period in 2009.