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Commercial Buildings Energy Consumption Survey (CBECS)

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Table C2. Total energy expenditures by major fuel, 2012

Released: May 2016

All buildings Total energy expenditures (million dollars)
  Number of buildings (thousand) Total
floorspace
(million
square feet)
Sum of
major
fuels
Electricity Natural
gas
Fuel
oil
District
heat
All buildings 5,557 87,093 149,059 121,875 17,279 3,230 6,675
Building floorspace (square feet)              
1,001 to 5,000 2,777 8,041 16,343 13,633 2,157 522 Q
5,001 to 10,000 1,229 8,900 14,230 11,977 1,957 253 Q
10,001 to 25,000 884 14,105 19,921 16,682 2,549 494 Q
25,001 to 50,000 332 11,917 17,299 14,549 2,101 329 320
50,001 to 100,000 199 13,918 22,523 18,473 2,621 559 870
100,001 to 200,000 90 12,415 21,907 17,507 2,261 461 1,678
200,001 to 500,000 38 10,724 20,880 16,706 2,161 329 1,683
Over 500,000 8 7,074 15,956 12,347 1,473 284 1,852
Principal building activity              
Education 389 12,239 16,819 12,893 2,200 658 1,068
Food sales 177 1,252 6,167 5,719 420 Q N
Food service 380 1,819 9,956 8,070 1,700 Q Q
Health care 157 4,155 13,072 9,585 1,818 444 1,225
Inpatient 10 2,374 9,373 6,435 1,441 362 1,136
Outpatient 147 1,781 3,699 3,150 377 Q Q
Lodging 158 5,826 10,997 8,498 1,628 204 667
Mercantile 602 11,330 22,704 20,016 2,392 241 Q
Retail (other than mall) 438 5,439 8,982 8,144 607 188 Q
Enclosed and strip malls 164 5,890 13,722 11,872 1,785 Q Q
Office 1,012 15,952 30,781 26,240 2,306 449 1,787
Public assembly 352 5,559 10,217 7,889 1,063 160 1,106
Public order and safety 84 1,440 2,766 2,038 310 59 Q
Religious worship 412 4,557 3,338 2,513 691 134 N
Service 619 4,630 5,614 4,121 950 394 Q
Warehouse and storage 796 13,077 9,696 8,442 1,120 129 Q
Other 125 2,002 5,958 5,041 571 243 Q
Vacant 296 3,256 974 809 108 Q Q
Year constructed              
Before 1920 362 3,983 5,194 3,515 757 398 523
1920 to 1945 488 6,025 9,699 7,279 1,167 355 898
1946 to 1959 599 7,381 11,016 8,455 1,595 428 538
1960 to 1969 639 10,362 18,387 14,326 2,398 478 1,185
1970 to 1979 684 10,846 20,601 16,021 2,542 383 1,655
1980 to 1989 915 15,230 26,174 22,843 2,624 385 321
1990 to 1999 845 13,803 23,763 20,479 2,535 330 420
2000 to 2003 375 7,215 12,599 10,673 1,198 253 Q
2004 to 2007 347 6,524 11,308 9,561 1,284 74 Q
2008 to 2012 303 5,723 10,318 8,723 1,180 145 Q
Census region and division              
Northeast 805 15,534 34,917 25,123 4,599 2,146 3,049
New England 302 4,302 9,321 6,501 1,067 1,119 Q
Middle Atlantic 504 11,232 25,596 18,622 3,533 1,027 2,414
Midwest 1,237 18,919 27,379 21,717 4,383 367 912
East North Central 735 12,742 19,718 15,676 3,344 237 461
West North Central 502 6,178 7,661 6,040 1,039 130 Q
South 2,247 34,279 54,780 47,473 4,793 553 1,960
South Atlantic 1,091 17,981 31,285 27,244 2,641 387 1,013
East South Central 370 4,904 7,478 6,225 790 73 Q
West South Central 786 11,394 16,017 14,004 1,362 94 557
West 1,267 18,360 31,983 27,563 3,503 164 753
Mountain 338 4,981 7,695 6,224 1,075 Q Q
Pacific 929 13,379 24,288 21,339 2,428 117 404
Climate region1              
Very cold/Cold 2,031 31,898 52,579 40,072 8,269 1,967 2,271
Mixed-humid 1,743 27,873 49,440 39,376 5,432 1,043 3,589
Mixed-dry/Hot-dry 837 12,037 20,480 18,349 1,723 62 Q
Hot-humid 799 12,831 21,883 20,169 1,262 133 319
Marine 147 2,454 4,677 3,910 593 26 Q
Number of floors              
One 3,836 39,809 62,436 53,981 7,305 1,009 Q
Two 1,158 20,206 31,065 25,383 3,956 783 Q
Three 374 8,140 14,050 11,014 1,700 553 784
Four to nine 177 13,535 28,310 21,425 3,233 679 2,973
Ten or more 13 5,404 13,198 10,072 1,085 207 1,834
Elevators and escalators
(more than one may apply)
             
Any elevators 405 32,120 66,070 51,427 7,059 1,348 6,236
Number of elevators              
One 272 11,158 17,859 13,724 2,282 388 Q
Two to five 118 12,817 26,106 21,044 2,612 595 1,855
Six or more 16 8,145 22,105 16,659 2,164 365 2,917
Any escalators 10 3,654 8,114 6,294 652 123 1,046
Number of workers (main shift)              
Fewer than 5 2,892 17,751 16,883 13,812 2,221 767 Q
5 to 9 1,085 8,973 13,631 11,619 1,678 222 Q
10 to 19 731 9,623 16,355 13,555 2,296 270 Q
20 to 49 513 14,514 25,414 21,239 2,954 409 813
50 to 99 206 13,476 23,977 20,070 2,808 514 585
100 to 249 93 10,941 21,742 17,630 2,546 526 1,040
250 or more 37 11,815 31,057 23,951 2,775 523 3,808
Weekly operating hours              
Fewer than 40 1,149 8,220 4,800 3,740 783 241 Q
40 to 48 1,346 15,828 19,174 16,051 2,118 635 369
49 to 60 1,244 20,529 28,917 24,484 2,960 604 869
61 to 84 764 15,867 30,071 25,240 3,747 477 607
85 to 167 479 9,395 22,874 18,906 2,684 211 1,072
Open continuously 575 17,253 43,224 33,454 4,986 1,062 3,722
Ownership and occupancy              
Nongovernment owned 4,781 67,550 116,648 97,696 13,484 2,224 3,244
Owner occupied 2,466 30,637 53,282 43,284 6,629 1,372 1,997
Leased to tenant(s) 1,745 26,115 47,461 41,062 5,172 578 649
Owner occupied and leased 349 8,873 15,672 13,162 1,647 267 597
Unoccupied 221 1,925 233 189 37 Q Q
Government owned 776 19,543 32,411 24,179 3,794 1,007 3,431
Federal 33 1,573 3,098 2,246 228 Q 550
State 185 5,539 10,649 7,242 1,259 125 2,023
Local 558 12,431 18,664 14,691 2,307 808 858
Party responsible for operation
and maintenance of energy
systems
             
Building owner 4,715 73,702 123,188 99,912 14,092 2,911 6,273
Business owner or tenant 724 11,309 21,926 18,634 2,776 233 Q
Property management 54 1,250 2,229 1,892 206 24 Q
Other 64 832 1,715 1,437 204 Q Q
Provider of direct input on energy-
related equipment purchases
             
Building owner 4,876 76,271 127,298 103,452 14,619 2,964 6,263
Business owner or tenant 540 8,256 16,900 14,356 2,101 156 Q
Property management 35 880 1,499 1,306 121 41 Q
Other 106 1,686 3,361 2,762 438 69 Q
Number of establishments              
One 4,205 54,994 93,466 75,573 11,567 2,368 3,958
2 to 5 862 17,756 30,532 24,651 3,352 589 1,940
6 to 10 147 4,425 8,231 6,963 877 124 267
11 to 20 68 3,704 8,081 6,982 880 26 Q
More than 20 27 3,821 8,483 7,499 553 116 315
Currently unoccupied 248 2,393 266 208 49 Q Q
Predominant exterior wall material              
Brick, stone, or stucco 2,312 40,463 72,280 58,369 8,924 1,418 3,569
Concrete (block or poured) 1,121 20,726 37,773 31,422 4,166 678 1,506
Concrete panels 210 8,693 14,004 11,673 1,420 163 747
Siding or shingles 905 5,750 9,387 7,747 1,094 525 Q
Metal panels 933 8,673 9,203 7,509 1,028 330 Q
Window glass 17 1,340 3,634 2,997 385 53 199
Other 37 856 1,813 1,384 Q Q Q
No one major type 21 592 965 774 111 Q Q
Predominant roof material              
Metal surfacing 1,672 15,916 19,379 16,412 1,968 562 Q
Synthetic or rubber 911 25,817 49,992 40,442 6,488 958 2,104
Built-up 836 21,835 39,989 32,582 4,301 748 2,357
Slate or tile shingles 406 4,306 8,128 6,335 901 117 775
Wooden materials (including
shingles)
157 1,139 1,885 1,508 289 Q Q
Asphalt, fiberglass, or
other shingles
1,483 15,104 24,366 20,026 2,916 655 768
Concrete 51 1,642 3,275 2,971 177 60 Q
Other 24 678 1,259 1,042 146 Q Q
No one major type 18 657 787 557 92 Q Q
Roof characteristics              
Roof tilt              
Flat 1,960 49,623 94,637 77,289 10,950 1,644 4,754
Shallow pitch 2,148 23,853 35,264 29,573 3,811 822 1,057
Steeper pitch 1,449 13,617 19,158 15,013 2,518 764 863
Cool roof 740 19,630 38,636 31,151 4,507 791 2,187
Renovations in buildings
constructed before 2008
(more than one may apply)
             
Any type of renovation 2,094 42,216 79,130 62,883 9,407 1,934 4,905
Addition or annex 444 13,022 24,824 18,928 3,376 795 1,725
Reduction in floorspace 71 1,753 4,708 3,164 497 Q Q
Roof replacement 987 20,917 40,812 31,469 5,201 1,313 2,829
Exterior wall replacement 194 4,230 8,144 6,509 974 263 397
Interior wall reconfiguration 889 21,340 43,350 34,504 4,851 920 3,075
Window replacement 560 12,265 22,649 17,416 2,926 824 1,483
HVAC equipment upgrade 1,101 26,779 53,298 41,872 6,341 1,151 3,934
Lighting upgrade 982 25,503 50,024 39,493 6,007 1,245 3,279
Electrical upgrade 747 16,160 33,090 25,680 4,139 911 2,361
Plumbing system upgrade 644 13,828 28,545 22,025 3,849 818 1,852
Insulation upgrade 382 7,607 15,243 11,754 2,036 320 1,132
Fire, safety, or security upgrade 616 17,196 35,026 27,572 4,234 932 2,288
Structural upgrade 152 3,913 8,258 6,435 1,070 226 528
Other 39 848 1,701 1,332 107 Q Q
No renovations 3,160 39,154 59,611 50,269 6,692 1,151 1,499
Buildings constructed 2008 or later 303 5,723 10,318 8,723 1,180 145 Q
Energy sources
(more than one may apply)
             
Electricity 5,234 84,869 149,059 121,875 17,279 3,230 6,675
Natural gas 2,933 58,725 109,664 87,843 17,279 1,002 3,541
Fuel oil 467 20,200 47,354 36,349 4,456 3,230 3,319
District heat 48 5,964 17,326 9,745 748 159 6,675
District chilled water 54 4,608 12,725 7,279 921 108 4,417
Propane 510 7,706 13,179 10,822 1,035 1,008 Q
Other 172 3,826 6,452 5,171 821 201 259
Space-heating energy sources
(more than one may apply)
             
Electricity 2,858 49,030 86,351 74,674 8,773 1,037 1,867
Natural gas 2,612 49,511 85,944 70,020 15,055 580 288
Fuel oil 270 4,351 8,473 5,358 609 2,484 Q
District heat 48 5,925 17,232 9,679 746 150 6,656
Propane 342 3,067 3,604 3,156 145 301 Q
Other 101 1,010 1,162 948 101 45 Q
Primary space-heating
energy source
             
Electricity 1,819 26,205 45,007 42,062 2,700 226 Q
Natural gas 2,322 42,988 74,273 60,323 13,530 396 Q
Fuel oil 205 2,542 5,022 2,588 75 2,357 Q
District heat 47 5,797 17,056 9,569 730 130 6,627
Propane 261 1,948 1,663 1,629 Q Q N
Other 67 598 583 515 Q Q N
Cooling energy sources
(more than one may apply)
             
Electricity 4,413 76,034 136,319 114,058 15,988 2,645 3,629
Natural gas 12 732 1,627 1,170 423 21 Q
District chilled water 54 4,608 12,725 7,279 921 108 4,417
Water-heating energy sources
(more than one may apply)
             
Electricity 2,658 42,755 72,423 63,203 6,010 1,389 1,822
Natural gas 1,758 39,523 77,507 62,383 13,379 587 Q
Fuel oil 77 1,911 4,349 2,648 280 1,401 Q
District heat 25 4,551 13,755 7,601 611 106 5,437
Propane 142 1,575 2,562 2,414 Q 127 Q
Cooking energy sources
(more than one may apply)
             
Electricity 1,010 25,151 52,305 43,196 5,971 1,035 2,102
Natural gas 740 24,770 58,012 45,887 9,283 596 2,246
Propane 144 2,001 4,512 3,723 142 628 Q
Energy end uses
(more than one may apply)
             
Buildings with space heating 4,722 80,078 143,605 116,684 17,071 3,176 6,673
Buildings with cooling 4,461 79,294 144,768 118,778 16,667 2,689 6,634
Buildings with water heating 4,423 79,015 144,637 118,083 16,986 3,032 6,537
Buildings with cooking 1,589 38,546 83,495 67,252 10,861 1,808 3,574
Buildings with manufacturing 259 5,078 7,891 6,660 1,020 152 Q
Buildings with electricity
generation
410 25,642 57,892 46,125 6,275 1,613 3,879
Percent of floorspace heated              
Not heated 835 7,015 5,454 5,191 208 54 Q
1 to 50 697 10,130 11,572 10,362 978 218 Q
51 to 99 727 14,650 28,357 23,586 3,431 439 901
100 3,298 55,298 103,676 82,737 12,661 2,519 5,758
Percent of floorspace cooled              
Not cooled 1,096 7,799 4,291 3,097 612 541 Q
1 to 50 1,173 18,891 20,397 16,076 3,257 801 263
51 to 99 897 22,728 46,520 37,758 5,161 896 2,704
100 2,391 37,676 77,851 64,944 8,248 992 3,666
Percent lit when open              
Zero 70 322 135 118 Q Q Q
1 to 50 1,099 12,628 13,891 11,323 1,761 403 404
51 to 99 1,666 34,814 63,760 51,668 7,898 1,335 2,859
100 2,222 35,726 70,791 58,426 7,537 1,430 3,398
Building never open/electricity
not used
501 3,603 482 341 79 Q Q
Percent lit during off hours              
Zero 2,489 24,746 30,433 25,350 3,615 1,024 444
1 to 50 2,441 50,753 91,998 75,923 10,723 1,717 3,635
51 to 100 202 6,926 19,923 14,834 2,402 356 2,331
Building always open with
no "off hours"
102 2,443 6,705 5,768 538 Q Q
Electricity not used 323 2,225 N N N N N
Heating equipment
(more than one may apply)
             
Heat pumps 628 11,846 20,389 17,577 1,984 292 536
Furnaces 755 8,654 12,617 10,424 1,993 184 Q
Individual space heaters 1,247 20,766 33,023 26,694 4,209 912 1,207
District heat 48 5,925 17,232 9,679 746 150 6,656
Boilers 544 22,443 43,404 34,078 7,351 1,897 Q
Packaged heating units 2,802 49,188 86,846 74,368 10,488 1,126 865
Other 62 1,574 3,924 3,363 451 Q Q
Cooling equipment
(more than one may apply)
             
Residential-type central air
conditioners
1,546 14,765 23,162 19,238 3,330 363 Q
Heat pumps 692 12,538 21,321 18,431 2,067 282 541
Individual air conditioners 709 12,420 21,552 16,454 2,992 896 1,210
District chilled water 54 4,608 12,725 7,279 921 108 4,417
Central chillers 163 17,041 38,074 30,834 4,259 964 2,017
Packaged air conditioning units 1,909 45,153 84,882 71,017 9,995 1,512 2,357
Swamp coolers 109 1,918 3,620 2,961 519 19 Q
Other Q 328 1,009 887 86 Q Q
Main equipment replaced since
1990 (more than one may apply)
             
Heating 1,874 27,558 45,544 38,203 6,149 1,189 Q
Cooling 1,971 30,702 54,227 44,610 6,880 1,368 1,369
Water-heating equipment              
Centralized system 3,348 47,534 88,167 70,903 10,835 2,072 4,357
Distributed system 690 12,688 19,356 16,481 2,012 324 539
Combination of centralized and
distributed system
385 18,793 37,115 30,698 4,139 636 1,641
Lighting equipment types
(more than one may apply)
             
Incandescent 1,826 38,406 72,871 58,067 9,116 1,711 3,977
Standard fluorescent 4,649 80,081 143,245 116,985 16,667 3,054 6,539
Compact fluorescent 2,302 53,816 106,552 85,737 12,698 2,131 5,985
High-intensity discharge (HID) 525 23,396 45,359 36,217 5,202 1,183 2,756
Halogen 905 28,059 56,323 45,983 6,549 1,004 2,787
LED 473 22,071 49,526 40,018 5,745 682 3,081
Other 10 446 1,288 878 109 Q Q
Refrigeration equipment
(more than one may apply)
             
Any refrigeration 3,984 73,645 137,069 111,805 16,099 2,838 6,327
Walk-in units 811 28,361 71,295 57,455 9,275 1,259 3,306
Cases or cabinets 915 28,719 68,861 55,957 8,371 1,135 3,398
Large cold storage areas 78 4,171 10,736 9,056 1,293 129 257
Commercial ice makers 846 32,734 75,848 61,035 9,216 1,206 4,391
Residential-type or compact units 3,388 62,381 109,536 88,731 12,924 2,549 5,332
Vending machines 960 43,936 87,026 70,214 9,624 1,679 5,510
No refrigeration 1,573 13,448 11,990 10,070 1,180 392 348
Office equipment
(more than one may apply)
             
Desktop computers 3,977 77,063 140,644 114,933 16,203 2,903 6,605
With flat screen monitors 3,847 76,160 139,323 113,832 16,013 2,874 6,604
With multiple monitors 911 30,946 62,497 50,411 6,505 1,159 4,423
Laptop computers 2,730 63,486 116,037 94,088 13,410 2,396 6,143
Dedicated servers 1,748 53,369 102,388 84,019 11,172 2,199 4,998
Laser printers 2,339 54,256 101,943 83,064 11,427 2,091 5,361
Inkjet printers 2,187 36,235 63,200 52,214 7,470 1,425 2,090
FAX machines 3,185 66,682 122,287 100,207 14,017 2,479 5,584
Photocopiers 2,163 59,277 108,985 88,288 12,116 2,414 6,167
Number of desktop computers              
None 1,581 10,030 8,415 6,943 1,075 328 Q
1 to 4 2,039 15,669 25,282 20,849 3,668 660 Q
5 to 9 821 9,422 15,649 13,152 2,121 284 Q
10 to 19 482 9,388 15,507 13,203 1,766 298 Q
20 to 49 355 13,094 23,764 20,062 2,633 368 701
50 to 99 143 8,284 13,985 11,748 1,581 308 349
100 to 249 92 9,728 19,760 14,675 1,958 383 2,743
250 or more 44 11,478 26,697 21,243 2,478 602 2,374
Number of laptop computers              
None 2,827 23,607 33,022 27,787 3,869 834 532
1 to 4 1,944 21,161 32,556 27,026 4,432 700 398
5 to 9 350 8,345 14,898 12,044 1,780 308 Q
10 to 19 181 8,343 15,453 12,884 1,868 186 514
20 to 49 144 9,643 18,640 14,733 2,057 383 1,467
50 to 99 58 5,234 10,692 8,429 1,175 331 758
100 to 249 35 5,217 10,633 8,261 999 282 1,091
250 or more 20 5,542 13,165 10,710 1,099 207 1,150
Number of dedicated servers              
None 3,809 33,724 46,671 37,856 6,106 1,031 1,677
1 to 4 1,562 34,097 58,557 48,512 6,943 1,427 1,675
5 to 9 97 6,241 11,694 9,574 1,491 126 503
10 to 19 50 5,711 13,085 10,592 1,093 300 1,101
20 to 49 25 3,758 8,074 6,538 789 163 584
50 or more 13 3,562 10,978 8,803 857 183 1,135
Number of photocopiers              
None 3,394 27,816 40,074 33,587 5,163 817 508
One 1,325 17,080 25,620 21,199 3,301 712 Q
2 to 4 648 20,312 34,204 28,580 4,038 720 866
5 to 9 116 8,863 16,569 13,456 1,830 242 Q
10 or more 75 13,022 32,592 25,054 2,946 739 3,853
Number of TVs or video displays              
None 2,718 24,339 27,735 23,257 3,214 861 402
One 1,145 9,990 14,677 11,897 2,071 494 Q
2 to 4 1,035 16,465 28,609 24,096 3,639 469 404
5 to 9 314 8,148 17,015 14,468 1,723 232 593
10 to 19 154 8,168 16,990 13,430 1,778 262 Q
20 to 49 106 8,058 16,023 13,521 1,488 327 687
50 to 99 48 4,378 8,966 7,071 789 203 902
100 or more 37 7,547 19,044 14,136 2,576 381 1,952
Food preparation or serving areas
in non-food service buildings
(more than one may apply)
             
Snack bar or concession stand 153 9,884 22,669 18,136 2,660 384 1,489
Fast food or small restaurant 173 9,787 25,388 21,235 2,811 200 1,142
Cafeteria or large restaurant 130 15,222 32,102 24,625 4,206 1,002 2,269
Commercial kitchen/
food preparation area
282 16,150 35,118 27,221 4,943 783 2,170
Small kitchen area 736 14,054 24,674 19,739 3,190 745 1,001
Separate computer areas
(more than one may apply)
             
Data center or server farm 97 11,105 28,418 22,702 2,619 637 2,459
Computer-based training room 244 17,723 35,069 28,326 3,710 833 2,200
Student or public computer center 238 14,341 24,649 18,779 3,256 580 2,033
HVAC conservation features
(more than one may apply)
             
Economizer cycle 601 30,749 64,942 51,308 7,520 1,026 5,088
Regular HVAC maintenance 3,178 69,244 131,733 107,543 15,133 2,681 6,375
Building automation system (BAS)2 781 37,051 78,304 63,815 8,094 1,371 5,023
Window and interior lighting
features (more than one may
apply)
             
Multipaned windows 3,012 60,362 109,145 89,208 13,407 2,271 4,259
Tinted window glass 1,875 45,025 83,408 68,961 9,673 1,155 3,619
Reflective window glass 549 15,908 34,327 28,594 4,030 484 1,220
External overhangs or awnings 1,867 32,188 64,414 52,842 7,857 974 2,741
Skylights or atriums 591 22,261 41,021 31,935 5,111 938 3,037
Light scheduling 918 30,263 63,371 53,018 7,031 884 2,438
Occupancy sensors 813 35,871 72,679 58,844 8,061 1,403 4,372
Multi-level lighting or dimming 349 14,534 32,911 26,331 4,218 377 1,986
Daylight harvesting 125 6,114 13,036 10,563 1,516 165 791
Demand responsive lighting 176 4,738 9,636 8,365 1,051 72 Q
Building automation system (BAS) for lighting2 208 12,068 26,570 23,034 2,536 228 771
Equipment usage reduced when
building not in full use
(more than one may apply)
             
Heating 3,699 63,167 108,440 88,705 13,009 2,233 4,494
Cooling 3,517 62,516 108,878 89,825 12,753 1,880 4,419
Lighting 4,757 78,594 137435.0 111,970 16,253 2,971 6,240
   
1These climate regions were created by the Building America program, sponsored by the U.S. Department of Energy’s Office of Energy Efficiency and Renewable Energy (EERE).
2In earlier CBECS publications, BAS was referred to as Energy Management and Control System (EMCS).
Q = Data withheld either because the Relative Standard Error (RSE) was greater than 50 percent or fewer than 20 buildings were sampled.
N = No cases in reporting sample.
Notes: • Because of rounding, data may not sum to totals. • See the
Guide to the 2012 CBECS Detailed Tables or CBECS Terminology for definitions of terms used in these tables and/or comparison of differences with prior CBECS tables. Both references can be accessed from http://www.eia.gov/consumption/commercial/data/2012/. • Statistics for the Energy end uses category represent total consumption in buildings that have the end use, not consumption specifically for that particular end use. • HVAC = Heating, ventilation, and air conditioning.
Source: U.S. Energy Information Administration, Office of Energy Consumption and Efficiency Statistics, Form EIA-871A, C, D, E, and F of the 2012 Commercial Buildings Energy Consumption Survey.