Air-Conditioning, Heating & Refrigeration Institute (AHRI) has released shipment data for December 2013, covering water heaters, air conditining units, heat pumps, and oil and gas warm air furnaces.

Residential Storage Water Heaters
U.S. shipments of residential gas storage water heaters for December 2013 increased 10.4 percent, to 398,059 units, up from 360,568 units shipped in December 2012. Residential electric storage water heater shipments increased 7.2 percent in December 2013, to 348,872 units, up from 325,435 units shipped in December 2012.

For the year-to-date, U.S. shipments of residential gas storage water heaters increased 8.1 percent, to 4,282,104, compared to 3,959,444 units shipped during the same period in 2012. Residential electric storage water heater shipments increased 7.4 percent year-to-date, to 4,008,478 units, compared to 3,733,988 units shipped during the same period in 2012.

Commercial Storage Water Heaters
Commercial gas storage water heater shipments increased 7.1 percent in December 2013, to 7,795 units, up from 7,277 units shipped in December 2012. Commercial electric storage water heater shipments increased 21.9 percent in December 2013, to 6,112 units, up from 5,015 units shipped in December 2012.

Year-to-date U.S. shipments of commercial gas storage water heaters increased 10.0 percent, to 88,539 units, compared with 80,490 units shipped during the same period in 2012. Year-to-date commercial electric storage water heater shipments increased 2.8 percent to 69,160 units, up from 67,265 units shipped during the same period in 2012.

Warm Air Furnaces
U.S. shipments of gas warm air furnaces for December 2013 increased 17.4 percent, to 240,438 units, up from 204,754 units shipped in December 2012. Oil warm air furnace shipments decreased 8.2 percent, to 3,520 units in December 2013, down from 3,836 units shipped in December 2012.

Central Air Conditioners and Air-Source Heat Pumps
U.S. shipments of central air conditioners and air-source heat pumps totaled 306,141 units in December 2013, up 8.2 percent from 282,840 units shipped in December 2012. U.S. shipments of air conditioners increased 2.3 percent, to 186,484 units, up from 182,323 units shipped in December 2012. U.S. shipments of air-source heat pumps increased 19.0 percent, to 119,657 units, up from 100,517 units shipped in December 2012.

Year-to-date combined shipments of central air conditioners and air-source heat pumps increased 9.9 percent, to 6,169,700 units, up from 5,613,665 units shipped in December 2012. Year-to-date shipments of central air conditioners increased 7.3 percent, to 4,201,068 units, up from 3,915,869 units shipped during the same period in 2012. The year-to-date total for heat pump shipments increased 16.0 percent, to 1,968,632 units, up from 1,697,796 units shipped during the same period in 2012.