Released: June 2006
Next CBECS will be conducted in 2007

Table B28.  Primary Space-Heating Energy Sources, Number of Buildings for Non-Mall Buildings, 2003
  Number of Buildings (thousand)
All
Buildings*
Buildings
with
Space
Heating
Primary Space-Heating Energy Source Used a
Electricity Natural
Gas
Fuel
Oil
District
Heat
All Buildings* ............................... 4,645 3,982 1,258 1,999 282 63
Building Floorspace
(Square Feet)
1,001 to 5,000 ................................ 2,552 2,100 699 955 171 Q
5,001 to 10,000 .............................. 889 782 233 409 58 Q
10,001 to 25,000 ............................ 738 659 211 372 32 Q
25,001 to 50,000 ............................ 241 225 63 140 8 9
50,001 to 100,000 .......................... 129 123 32 73 6 8
100,001 to 200,000 ........................ 65 62 15 33 Q 9
200,001 to 500,000 ........................ 25 24 5 13 Q 4
Over 500,000 ................................. 7 6 1 3 Q 2
Principal Building Activity
Education ....................................... 386 382 141 172 14 24
Food Sales ..................................... 226 188 94 68 Q N
Food Service ................................. 297 282 94 149 Q Q
Health Care .................................... 129 124 49 65 Q 1
  Inpatient ....................................... 8 8 Q 6 Q 0
  Outpatient .................................... 121 116 48 59 Q Q
Lodging .......................................... 142 142 78 34 Q Q
Retail (Other Than Mall).................. 443 408 115 223 Q Q
Office ............................................. 824 802 279 435 40 16
Public Assembly ............................ 277 258 62 129 37 6
Public Order and Safety ................ 71 70 Q 31 Q Q
Religious Worship .......................... 370 359 93 198 31 Q
Service .......................................... 622 515 103 249 50 Q
Warehouse and Storage ............... 597 316 103 168 Q Q
Other .............................................. 79 67 Q 40 Q Q
Vacant ........................................... 182 69 Q 39 Q Q
Year Constructed
Before 1920 ................................... 330 302 24 177 66 Q
1920 to 1945 .................................. 527 442 80 291 41 12
1946 to 1959 .................................. 562 493 126 268 48 13
1960 to 1969 .................................. 579 524 157 266 38 13
1970 to 1979 .................................. 731 648 219 324 36 6
1980 to 1989 .................................. 707 618 276 244 Q 4
1990 to 1999 .................................. 876 719 288 333 Q 7
2000 to 2003 .................................. 334 236 89 97 Q Q
Census Region and Division
Northeast ....................................... 726 672 90 324 212 17
  New England ............................... 233 211 Q 56 113 Q
  Middle Atlantic .............................. 493 461 71 268 98 11
Midwest ......................................... 1,266 1,112 179 738 36 13
  East North Central ........................ 696 633 87 501 Q 7
  West North Central ...................... 571 479 92 238 Q Q
South ............................................. 1,775 1,462 729 566 21 19
  South Atlantic .............................. 874 746 406 234 Q 13
  East South Central ....................... 348 283 103 133 Q Q
  West South Central ...................... 553 433 220 199 N Q
West .............................................. 878 735 261 371 Q 15
  Mountain ...................................... 299 273 65 162 Q Q
  Pacific .......................................... 580 462 196 209 Q 8
Climate Zone: 30-Year Average
Under 2,000 CDD and --
  More than 7,000 HDD ................... 855 752 115 448 112 6
  5,500-7,000 HDD ......................... 1,173 1,055 196 640 109 27
  4,000-5,499 HDD ......................... 673 626 142 291 48 13
  Fewer than 4,000 HDD ................ 1,276 1051 433 508 Q 11
2,000 CDD or More and --
  Fewer than 4,000 HDD ................ 669 498 372 112 Q 6
Number of Workers (main shift)
Fewer than 5 ................................. 2,653 2,080 674 918 190 Q
5 to 9 .............................................. 778 733 236 404 47 Q
10 to 19 .......................................... 563 536 180 291 24 Q
20 to 49 .......................................... 398 387 101 244 Q 15
50 to 99 .......................................... 147 141 38 87 6 7
100 to 249 ...................................... 77 76 22 39 Q 9
250 or More ................................... 30 29 8 15 Q 5
Weekly Operating Hours
Fewer than 40 ............................... 1,002 751 227 333 65 Q
40 to 48 .......................................... 1,117 1,037 340 506 80 11
49 to 60 .......................................... 1,062 965 274 541 54 18
61 to 84 .......................................... 591 535 160 304 36 11
85 to 167 ........................................ 400 331 103 171 20 9
Open Continuously ........................ 475 364 154 144 27 9
Energy Sources (more than
one may apply)
Electricity ....................................... 4,404 3,971 1,258 1,998 282 63
Natural Gas .................................... 2,391 2,344 281 1,999 38 24
Fuel Oil ........................................... 451 443 51 77 282 4
District Heat ................................... 67 67 Q Q N 63
District Chilled Water ...................... 33 32 Q 5 Q 23
Propane ......................................... 502 489 78 39 49 Q
Other .............................................. 132 132 Q 29 Q Q
Energy End Uses (more than
one may apply)
Buildings with Space Heating ........ 3,982 3,982 1,258 1,999 282 63
Buildings with Cooling .................... 3,625 3,469 1,188 1,794 161 52
Buildings with Water Heating ......... 3,472 3,337 999 1,765 226 57
Buildings with Cooking ................... 801 764 223 397 68 8
Buildings with Manufacturing ........ 119 111 25 62 Q Q
Buildings with Electricity
 Generation .................................... 149 148 40 78 10 6
Percent of Floorspace Heated
Not Heated ..................................... 663 N N N N N
1 to 50 ............................................ 523 523 222 192 42 Q
51 to 99 .......................................... 498 498 146 272 41 5
100 ................................................. 2,962 2,962 891 1,534 199 57
Heating Equipment (more
than one may apply)
Heat Pumps .................................... 476 476 371 85 Q 1
  Packaged Heat Pumps ................. 278 278 220 51 Q Q
  Split-System Heat Pumps ............. 166 166 128 27 N Q
  Individual Room Heat Pumps ........ 58 58 42 14 Q Q
Furnaces ....................................... 1,864 1,864 296 1,212 145 Q
Individual Space Heaters ............... 819 819 305 361 39 4
District Heat ................................... 65 65 Q Q N 63
Boilers ............................................ 579 579 58 373 121 Q
Packaged Heating Units ................. 953 953 427 456 Q 2
Other .............................................. 205 205 60 69 Q Q
See "Guide to the Tables" or "Glossary" for further explanations of the terms used in this table. Both can be accessed from the CBECS web site - http://www.eia.gov/consumption/commercial/.
 * Figures in this table do not include enclosed malls and strip malls. Mall buildings add an estimated 213 thousand buildings comprising 6.9 billion square feet.
a  Additionally, 308,000 buildings used propane; 72,000 used wood, coal or some other energy source; and no responding buildings in the sample used solar as a primary space-heating energy source.
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 2003 Commercial Buildings Energy Consumption Survey.