HVAC Design/Construction Process

DOE establishes ASHRAE 90.1-2007 as national reference for federal and commercial buildings

November 7, 2011
U.S. shipments of residential gas storage water heaters for August 2011 decreased 8%, to 284,536 units, down from 308,646 units shipped in August 2010. Residential electric storage water heater shipments decreased 5% in August 2011, to 284,574 units, down from 299,048 units shipped in August 2010.

For the year-to-date, U.S. shipments of residential gas storage water heaters decreased 5%, to 2,602,563 units, compared to 2,725,684 units shipped during the same period in 2010. Residential electric storage water heater shipments decreased 5% year-to-date, to 2,462,055 units, compared to 2,577,475 units shipped during the same period in 2010.

Commercial gas storage water heater shipments decreased 1% in August 2011, to 5,760 units, down from 5,835 units shipped in August 2010. Commercial electric storage water heater shipments increased 8% in August 2011, to 4,952 units, up from 4,573 units shipped in August 2010.

Year-to-date U.S. shipments of commercial gas storage water heaters decreased 0.1%, to 54,805 units, compared with 54,833 units shipped during the same period in 2010. Year-to-date commercial electric storage water heater shipments increased 1% to 40,296 units, up from 39,835 units shipped during the same period in 2010.

U.S. shipments of gas warm air furnaces for August 2011 decreased 9%, to 181,771 units, down from 199,402 units shipped in August 2010. Oil warm air furnace shipments decreased 6%, to 3,435 units in August 2011, down from 3,636 units shipped in August 2010.

Year-to-date U.S. shipments of gas warm air furnaces decreased 8%, to 1,313,610 units, compared with 1,426,017 units shipped during the same period in 2010. Year-to-date U.S. shipments of oil warm air furnaces decreased 11% to 25,352 units, compared with 28,413 units shipped during the same period in 2010.

U.S. shipments of central air conditioners and air-source heat pumps totaled 517,864 units in August 2011, up 18% from 439,551 units shipped in August 2010. U.S. shipments of air conditioners increased 24%, to 371,157 units, up from 300,046 units shipped in August 2010. U.S. shipments of air-source heat pumps increased 5%, to 146,707 units, up from 139,505 units shipped in August 2010.

Year-to-date combined shipments of residential central air conditioners and air-source heat pumps increased 13%, to 4,417,192 units, up from 3,899,259 units shipped in August 2010. Year-to-date shipments of central air conditioners increased 17%, to 3,052,281 units, up from 2,618,762 units shipped during the same period in 2010. The year-to-date total for heat pump shipments increased 7%, to 1,364,911 units, up from 1,280,497 units shipped during the same period in 2010

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