ResidentialType

 Central Air 

Conditioners

Heat 

Pumps

Individual 

Air 

Conditioners

District 

Chilled 

Water

Central 

Chillers

Packaged

 Air 

Conditioning 

Units

Swamp 

Coolers Other

All Buildings ............................................... 67,338 58,474 8,329 9,147 14,276 2,750 12,909 36,527 2,219 1,312

Building Floorspace

(Square Feet)

1,001 to 5,000 .............................................. 6,774 4,879 890 700 962 Q Q 2,613 253 Q

5,001 to 10,000 ............................................ 8,238 6,212 1,606 707 1,396 Q Q 3,197 181 Q

10,001 to 25,000 .......................................... 11,153 9,530 1,420 1,270 2,482 Q 307 6,031 207 Q

25,001 to 50,000 .......................................... 9,311 8,116 860 1,304 2,140 294 919 5,120 325 153

50,001 to 100,000 ........................................ 10,112 9,401 1,221 1,593 2,057 525 1,989 6,164 477 Q

100,001 to 200,000 ...................................... 8,271 7,609 905 1,229 1,834 630 2,331 5,217 307 Q

200,001 to 500,000 ...................................... 6,851 6,345 715 1,126 2,032 470 2,963 4,106 Q Q

Over 500,000 ............................................... 6,628 6,382 712 1,219 1,373 630 4,223 4,080 Q Q

Principal Building Activity

Education .................................................... 8,651 7,973 625 1,220 2,974 676 2,108 4,331 508 Q

Food Sales .................................................. 994 978 Q Q Q N Q 610 Q Q

Food Service ............................................... 1,851 1,760 357 Q 394 Q Q 1,323 Q Q

Health Care ................................................. 2,918 2,815 572 684 696 433 1,609 1,783 Q Q

 Inpatient ..................................................... 1,865 1,762 455 503 602 356 1,413 1,109 Q Q

 Outpatient .................................................. 1,053 1,053 Q Q Q Q 196 673 Q Q

Lodging ........................................................ 4,521 4,051 736 1,014 2,075 219 980 1,956 Q Q

Mercantile .................................................... 10,398 10,174 1,043 1,296 1,441 Q 1,278 8,019 387 Q

 Retail (Other Than Mall) ............................ 4,766 4,573 551 225 1,111 Q Q 3,003 Q Q

 Enclosed and Strip Malls ........................... 5,631 5,601 492 1,070 330 Q 1,115 5,017 Q Q

Office ........................................................... 12,044 11,782 1,089 2,158 1,500 678 4,559 6,838 169 565

Public Assembly .......................................... 4,393 3,859 579 533 742 436 920 2,152 Q Q

Public Order and Safety .............................. 1,168 760 Q Q 284 Q 302 383 Q Q

Religious Worship ....................................... 3,405 2,765 694 403 781 Q Q 1,630 Q Q

Service ........................................................ 3,388 2,481 491 399 716 Q Q 1,575 Q Q

Warehouse and Storage ............................. 10,477 7,621 1,658 858 2,155 Q 349 5,198 179 Q

Other ............................................................ 1,222 1,087 Q Q Q Q Q 482 Q Q

Vacant ......................................................... 1,908 368 Q Q Q N Q Q Q Q

Year Constructed

1919 or Before ............................................. 4,034 2,911 677 284 1,206 Q 254 1,244 Q Q

1920 to 1945 ................................................ 6,445 4,383 657 551 2,074 134 984 2,367 Q Q

1946 to 1959 ................................................ 9,127 7,601 1,239 984 2,833 406 1,329 4,427 261 Q

1960 to 1969 ................................................ 10,866 9,325 957 1,119 2,296 633 2,765 5,686 527 Q

1970 to 1979 ................................................ 11,840 11,050 1,621 1,793 2,237 492 2,766 7,001 499 316

1980 to 1989 ................................................ 13,931 12,849 1,904 2,711 2,155 424 2,584 8,978 345 348

1990 to 1999 ................................................ 11,094 10,355 1,274 1,705 1,476 407 2,229 6,825 339 Q

Census Region

Northeast ..................................................... 12,360 10,311 950 1,215 3,897 326 2,782 6,641 Q Q

Midwest ....................................................... 16,761 14,371 2,951 1,063 3,724 746 3,149 8,198 Q 328

South ........................................................... 23,485 21,549 3,272 4,604 4,526 939 4,328 13,915 339 343

West ............................................................ 14,731 12,243 1,156 2,265 2,130 739 2,651 7,773 1,624 324

Climate Zone: 45-Year Average

Under 2,000 CDD and --

 More than 7,000 HDD ................................ 5,890 4,804 643 246 1,682 Q 971 2,753 Q Q

 5,500-7,000 HDD ...................................... 17,083 14,289 2,433 1,069 4,070 763 3,309 8,340 540 420

 4,000-5,499 HDD ...................................... 16,243 13,999 2,085 3,144 3,945 653 3,555 8,301 Q 266

 Fewer than 4,000 HDD .............................. 16,333 14,535 1,550 2,924 2,516 683 3,061 10,105 690 284

2,000 CDD or More and --

 Fewer than 4,000 HDD .............................. 11,788 10,847 1,617 1,765 2,063 589 2,014 7,028 646 228

Table B35. Cooling Equipment, Floorspace, 1999

Cooling Equipment (more than one may apply)

Total Floorspace (million square feet)

All

Buildings

All Cooled 

Buildings

Energy Information Administration

1999 Commercial Buildings Energy Consumption Survey: Building Characteristics Tables 111
ResidentialType

 Central Air 

Conditioners

Heat 

Pumps

Individual 

Air 

Conditioners

District 

Chilled 

Water

Central 

Chillers

Packaged

 Air 

Conditioning 

Units

Swamp 

Coolers Other

Table B35. Cooling Equipment, Floorspace, 1999

Cooling Equipment (more than one may apply)

Total Floorspace (million square feet)

All

Buildings

All Cooled 

Buildings

Workers (main shift)

Fewer than 5 ................................................ 14,321 8,704 2,041 753 2,568 Q 297 4,264 315 Q

5 to 9 ............................................................ 6,325 5,291 921 677 1,226 Q 223 2,933 317 Q

10 to 19 ........................................................ 8,028 7,409 1,187 1,267 2,037 Q 277 4,334 Q Q

20 to 49 ........................................................ 10,814 9,930 1,341 1,688 2,138 162 1,054 6,776 394 210

50 to 99 ........................................................ 8,898 8,519 791 1,493 2,046 478 1,646 5,963 365 Q

100 to 249 .................................................... 8,356 8,129 868 1,027 1,940 484 2,597 5,507 360 341

250 or More ................................................. 10,595 10,491 1,180 2,243 2,322 1,234 6,815 6,751 335 381

Weekly Operating Hours

39 or Fewer ................................................. 6,596 3,113 671 240 961 Q 218 1,820 Q Q

40 to 48 ........................................................ 13,105 11,041 1,882 1,985 2,573 239 1,402 6,164 399 165

49 to 60 ........................................................ 14,200 13,225 1,477 2,009 2,746 589 2,569 7,890 350 350

61 to 84 ........................................................ 12,458 11,701 1,648 1,619 2,334 504 3,182 7,950 432 Q

85 to 167 ...................................................... 9,116 8,528 1,015 1,286 2,010 505 1,098 6,194 513 Q

Open Continuously ...................................... 11,863 10,866 1,637 2,007 3,652 893 4,441 6,509 370 418

Multibuilding Facility Activity

Not Part of a Multibuilding

 Facility ........................................................ 41,289 36,386 5,509 5,793 9,135 309 6,902 23,072 1,344 649

College or University ................................... 2,605 2,058 Q Q 376 933 595 666 Q Q

Primary or Secondary School ...................... 3,388 3,001 188 372 1,056 Q 831 1,945 Q Q

Office Complex ............................................ 3,353 3,191 Q 388 281 Q 1,325 1,875 Q Q

Retail Complex ............................................ 3,555 3,463 221 494 552 Q Q 2,882 Q Q

Religious Campus or Complex .................... 1,907 1,702 Q Q 430 Q Q 1,115 Q Q

Health Care Complex .................................. 2,339 2,201 446 592 522 454 1,229 1,351 Q Q

Government Complex ................................. 1,513 1,218 Q Q 367 464 503 400 Q Q

Other ............................................................ 7,389 5,254 1,285 806 1,556 293 1,133 3,220 Q Q

Energy Sources (more than

one may apply)

Electricity ..................................................... 65,716 58,474 8,329 9,147 14,276 2,750 12,909 36,527 2,219 1,312

Natural Gas ................................................. 45,525 42,147 6,805 5,771 10,715 1,316 10,145 27,987 1,950 773

Fuel Oil ........................................................ 13,285 12,185 1,314 2,435 4,276 749 6,081 7,121 407 535

District Heat ................................................. 5,891 5,165 335 782 1,240 2,354 2,114 2,054 Q Q

District Chilled Water ................................... 2,750 2,750 Q 336 359 2,750 386 721 Q Q

Propane ....................................................... 6,290 5,415 867 800 1,626 Q 828 3,460 222 Q

Other ............................................................ 2,322 2,069 338 326 593 Q 550 1,368 Q Q

Cooling Energy Sources

(more than one may apply)

Electricity ..................................................... 55,545 55,545 8,329 9,120 14,276 1,093 12,405 35,387 2,175 1,244

Natural Gas ................................................. 1,914 1,914 Q 187 376 Q 272 1,595 Q Q

District Chilled Water ................................... 2,750 2,750 Q 336 359 2,750 386 721 Q Q

Energy End Uses (more than

one may apply)

Buildings with Space Heating ...................... 61,602 56,361 8,010 9,052 13,754 2,739 12,560 35,247 2,190 1,257

Buildings with Cooling ................................. 58,474 58,474 8,329 9,147 14,276 2,750 12,909 36,527 2,219 1,312

Buildings with Water Heating ...................... 56,115 52,589 7,278 8,409 12,888 2,455 12,484 33,328 2,060 1,191

Buildings with Cooking ................................ 24,681 23,730 2,965 4,406 6,798 1,047 8,488 15,767 1,148 641

Buildings with Manufacturing ....................... 3,126 2,861 563 422 1,198 Q 445 1,889 212 Q

Buildings with Electricity

 Generation .................................................. 11,882 11,538 1,358 2,544 2,860 919 6,234 7,328 511 583

Percent of Floorspace Cooled

Not Cooled .................................................. 8,864 N N N N N N N N N

1 to 50 .......................................................... 16,846 16,846 3,054 1,910 6,855 Q 903 9,465 880 233

51 to 99 ........................................................ 16,966 16,966 2,604 3,040 3,647 772 6,368 10,695 540 591

100 ............................................................... 24,662 24,662 2,672 4,197 3,774 1,805 5,639 16,368 800 488

Energy Information Administration

1999 Commercial Buildings Energy Consumption Survey: Building Characteristics Tables 112
ResidentialType

 Central Air 

Conditioners

Heat 

Pumps

Individual 

Air 

Conditioners

District 

Chilled 

Water

Central 

Chillers

Packaged

 Air 

Conditioning 

Units

Swamp 

Coolers Other

Table B35. Cooling Equipment, Floorspace, 1999

Cooling Equipment (more than one may apply)

Total Floorspace (million square feet)

All

Buildings

All Cooled 

Buildings

Heating Equipment (more

than one may apply)

Heat Pumps ................................................. 8,923 8,766 1,362 8,243 2,378 376 2,109 4,709 483 285

Furnaces ...................................................... 14,449 12,819 4,975 1,601 3,655 Q 1,259 7,240 756 225

Individual Space Heaters ............................ 17,349 15,708 2,810 2,750 6,603 567 3,863 10,774 835 285

District Heat ................................................. 5,534 4,844 303 701 1,140 2,279 2,069 1,884 Q Q

Boilers ......................................................... 19,522 17,947 2,282 2,749 6,406 326 8,549 10,047 823 637

Packaged Heating Units .............................. 25,743 25,134 2,617 3,799 5,127 497 4,425 23,495 1,253 385

Other ............................................................ 4,073 3,592 646 528 887 159 1,679 2,138 Q 468

Cooling Equipment (more

than one may apply)

Residential-Type Central

 Air Conditioners .......................................... 8,329 8,329 8,329 1,441 2,297 Q 1,489 3,365 Q Q

Heat Pumps ................................................. 9,147 9,147 1,441 9,147 2,443 336 2,272 4,895 549 293

Individual Air Conditioners ........................... 14,276 14,276 2,297 2,443 14,276 359 2,530 7,353 562 Q

District Chilled Water ................................... 2,750 2,750 Q 336 359 2,750 386 721 Q Q

Central Chillers ............................................ 12,909 12,909 1,489 2,272 2,530 386 12,909 6,282 312 Q

Packaged Air Conditioning

 Units ........................................................... 36,527 36,527 3,365 4,895 7,353 721 6,282 36,527 1,499 547

Swamp Coolers ........................................... 2,219 2,219 Q 549 562 Q 312 1,499 2,219 Q

Other ............................................................ 1,312 1,312 Q 293 Q Q Q 547 Q 1,312

Main Equipment Replaced Since

1995 (more than one may apply)

Heating ........................................................ 13,220 12,424 1,978 2,245 3,066 Q 1,672 8,991 730 230

Cooling ........................................................ 17,390 17,390 2,497 2,905 5,823 Q 3,380 11,357 910 358

Building Shell Conservation

Features (more than one

may apply)

Multipaned Windows ................................... 38,193 35,476 5,424 6,148 9,049 1,705 9,288 21,728 959 903

Tinted, Reflective, or

 Shading Glass ............................................ 29,915 28,721 3,465 4,682 5,298 1,827 8,534 19,291 1,201 759

HVAC Conservation Features

(more than one may apply)

Variable Air-Volume System ....................... 19,387 19,009 2,235 2,872 2,857 1,837 8,391 12,246 589 557

Economizer Cycle ........................................ 21,256 21,256 2,448 3,516 4,117 1,911 9,218 14,637 966 720

HVAC Maintenance ..................................... 53,395 50,309 6,780 8,272 11,204 2,670 12,705 32,576 2,040 1,220

Energy Management and

 Control System (EMCS) ............................. 21,613 20,817 2,049 3,343 4,116 2,186 9,343 12,958 626 843

Off-Hour Equipment Reduction

(more than one may apply)

Heating ........................................................ 39,969 36,639 5,217 5,804 7,866 1,631 6,968 23,102 1,560 702

Cooling ........................................................ 39,161 39,161 5,697 5,916 8,668 1,573 7,368 24,691 1,528 752

Lighting ........................................................ 51,083 46,004 6,512 7,018 10,240 1,855 8,214 28,904 1,800 890

Office Equipment ......................................... 9,063 8,748 860 1,350 2,329 378 2,467 5,605 258 Q

Q=Data withheld because the Relative Standard Error (RSE) was greater than 50 percent, or fewer than 20 buildings were sampled.

N=No responding cases in sample.

Note: Due to rounding, data may not sum to totals.

Source: Energy Information Administration, Office of Energy Markets and End Use, Form EIA-871A of the 1999 Commercial Buildings Energy Consumption Survey.

Energy Information Administration

1999 Commercial Buildings Energy Consumption Survey: Building Characteristics Tables 113