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EIA Home > Commercial > Special Topics > 1999 Building Activities > Office > Equipment Table

Buildings, Size and Age Data by Equipment Types for Office Buildings
 
Number of Buildings (thousand)
Percent of Buildings
Floorspace (million square feet)
Percent of Floorspace
Square Feet per Building (thousand)
Median Age of Building (years)
 
 
All Office Buildings
739
100
12,044
100
16.3
24.5
 
Heating Equipment (more than one may apply)
Heat Pumps
139
19
1,949
16
14
17.5
Furnaces
236
32
1,807
15
7.7
27.5
Individual Space Heaters
135
18
2,631
22
19.5
39.5
District Heat
19
3
1,487
12
76.3
42.5
Boilers
105
14
4,211
35
40
33.5
Packaged Heating Units
275
37
4,304
36
15.7
22.5
Other
13
2
1,244
10
92.9
15.5
 
Main Heating Equipment
Heat Pumps
115
16
1,068
9
9.3
15.5
Furnaces
219
30
1,317
11
6
29.5
Individual Space Heaters
19
3
313
3
16.5
31.5
District Heat
17
2
1,321
11
75.5
40.5
Boilers
94
13
3,758
31
39.8
37.5
Packaged Heating Units
257
35
3,115
26
12.1
22.5
Other
7
1
917
8
130.8
17.5
 
Cooling Equipment (more than one may apply)
Residential-Type Central Air Conditioners
137
18
1,089
9
8
18.5
Heat Pumps
141
19
2,158
18
15.3
20.5
Individual Air Conditioners
90
12
1,500
12
16.7
50.5
District Chilled Water
6
1
678
6
106.7
36.5
Central Chillers
31
4
4,559
38
146.7
28.5
Packaged Air Conditioning Units
385
52
6,838
57
17.8
24.5
Swamp Coolers
5
1
169
1
33.6
22.5
Other
14
2
565
5
Q
33.5
 
Main Cooling Equipment
Residential Type A/C Units
131
18
698
6
5.3
18.5
Heat Pumps
114
15
1,009
8
8.9
20.5
Individual Air Conditioners
62
8
463
4
7.5
50.5
District Chilled Water
5
1
589
5
111.6
32.5
Central Chillers
28
4
4,181
35
150.1
28.5
Packaged A/C Units
369
50
4,553
38
12.3
23.5
Swamp Coolers
Q
Q
Q
Q
Q
64.5
Other
Q
Q
267
2
45.8
16.5
 
Main Equipment Replaced Since 1995 (more than one may apply)
Heating
179
24
1,972
16
11
31.5
Cooling
196
27
2,851
24
14.5
28.5
 
Lighting Equipment Types (more than one may apply)
Incandescent
362
49
7,598
63
21
31.5
Standard Fluorescent
696
94
11,608
96
16.7
24.5
Compact Fluorescent
131
18
5,844
49
44.4
23.5
High Intensity Discharge
39
5
2,946
24
74.6
28.5
Halogen
81
11
4,034
33
49.5
22.5
Other
Q
Q
Q
Q
Q
12.5
 
Water Heating Equipment
Centralized System
426
58
6,184
51
14.5
27.5
Distributed System
156
21
2,186
18
14
21.5
Combination of Centralized and Distributed System
33
4
2,502
21
75.8
22.5
 
Commercial Refrigeration Equipment (more than one may apply)
Any Equipment
26
4
3,331
28
126.5
19.5
Walk-In Units
17
2
2,350
20
134.5
16.5
Cases or Cabinets
17
2
3,074
26
178.7
24.5
None
712
96
8,713
72
12.2
25.5
 
Personal Computers
None
Q
Q
Q
Q
Q
43.5
1 to 4
208
28
845
7
4.1
43.5
5 to 9
206
28
943
8
4.6
25.5
10 to 19
139
19
1,007
8
7.3
12.5
20 to 49
88
12
1,313
11
14.9
21.5
50 to 99
40
5
1,247
10
30.9
17.5
100 to 249
29
4
2,069
17
71.4
19.5
250 or More
22
3
4,571
38
212.1
19.5
 
Photocopiers
None
91
12
801
7
8.8
39.5
One
342
46
1,566
13
4.6
26.5
2 to 4
210
28
2,373
20
11.3
23.5
5 to 9
52
7
1,301
11
25.1
12.5
10 or More
43
6
6,003
50
139.9
19.5
 
Other Electronic Equipment (more than one may apply)
Laser Printers
630
85
11,497
95
18.2
24.5
FAX Machines
730
99
11,979
99
16.4
25.5
 
Energy-Related Space Functions (more than one may apply)
Commercial Food Preparation
17
2
3,005
25
175.7
24.5
Activities with Large Amounts of Hot Water
26
3
2,360
20
91.8
37.5
Q=Data withheld because the Relative Standard Error (RSE) was greater than 50 percent, or fewer than 20 buildings were sampled.
Source: Energy Information Administration, 1999 Commercial Buildings Energy Consumption Survey.

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Release date: July 24, 2002
Page last modified: January 16, 2003 11:43 AM
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