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Demographics: Distribution of Cooling Systems by Building Type

One type of system segmentation is shown below. It divides cooling systems into individual, packaged, and central systems and shows the distribution pattern in buildings of various types of use. Packaged cooling systems dominate all building types except “Lodging” where there is a significant use of individual A/C units.

U.S. Commercial Buildings Conditioned Floor Space, Building Type and System Type (million square feet) 

 
Indiv. A/C
Packaged
CentralVAV
CentralFCU
CentralCAV
Not Cooled
Total
Education

805

2,204

551

466

212

3,522

7,760

Food Sales

-

534

-

-

-

20

554

Food Service

83

1,100

-

-

-

64

1,247

Health Care

134

557

401

334

802

159

2,387

Lodging

1,669

283

85

707

85

779

3,608

Retail & Service

333

5,820

1,081

831

249

2,507

10,821

Office

1,257

4,450

2,322

484

1,161

561

10,235

Public Bldgs.

371

3,337

847

-

741

2,168

7,464

 Warehouse

119

1,482

-

-

102

2,285

3,988

 

4,771

19,767

5,287

2,822

3,352

12,065

48,064

Source(s): BTS/A.D. Little, Energy Consumption Characteristics of Commercial Building HVAC Systems, Volume II: Thermal Distribution, Auxiliary Equipment, and Ventilation, Oct. 1999, Table A2-12, p. B2-1.

Notes: VAV: Variable Air Volume; FCU: Fan-Coil Unit; CAV: Constant Air Volume

Source: EIA, 2003 CBECS