Table B31. Water-Heating Energy Sources, Number of Buildings for Non-Mall Buildings, 2003
	Number of Buildings (thousand)
	All Buildings*	Buildings with Water Heating	Water-Heating Energy Sources Used (more than one may apply)
			Elec- tricity	Natural Gas	Fuel Oil	District Heat	Propane
All Buildings* ...............................	4,645	3,472	1,910	1,445	94	27	128
Building Floorspace
(Square Feet)
1,001 to 5,000 ................................	2,552	1,715	1,020	617	41	N	66
5,001 to 10,000 ..............................	889	725	386	307	Q	Q	27
10,001 to 25,000 ............................	738	607	301	285	16	Q	27
25,001 to 50,000 ............................	241	217	110	114	Q	Q	Q
50,001 to 100,000 ..........................	129	119	53	70	Q	5	Q
100,001 to 200,000 ........................	65	60	27	35	Q	5	Q
200,001 to 500,000 ........................	25	23	9	14	Q	2	Q
Over 500,000 .................................	7	6	3	3	Q	1	N
Principal Building Activity
Education .......................................	386	298	144	149	10	6	15
Food Sales .....................................	226	186	109	68	Q	N	Q
Food Service .................................	297	297	101	176	Q	Q	Q
Health Care ....................................	129	127	72	56	1	1	Q
Inpatient .......................................	8	8	1	6	0	1	Q
Outpatient ....................................	121	119	70	50	Q	Q	N
Lodging ..........................................	142	142	45	74	14	Q	18
Retail (Other Than Mall)..................	443	314	189	118	Q	N	Q
Office .............................................	824	733	443	273	Q	10	Q
Public Assembly ............................	277	227	128	81	Q	3	Q
Public Order and Safety ................	71	70	32	24	Q	Q	Q
Religious Worship ..........................	370	315	171	139	Q	N	Q
Service ..........................................	622	418	260	154	Q	Q	Q
Warehouse and Storage ...............	597	243	163	85	Q	Q	Q
Other ..............................................	79	55	32	20	Q	Q	Q
Vacant ...........................................	182	47	21	27	N	Q	N
Year Constructed
Before 1920 ...................................	330	266	121	120	Q	Q	Q
1920 to 1945 ..................................	527	367	139	212	15	Q	Q
1946 to 1959 ..................................	562	416	212	191	Q	Q	Q
1960 to 1969 ..................................	579	444	237	177	20	8	24
1970 to 1979 ..................................	731	582	333	248	13	3	Q
1980 to 1989 ..................................	707	531	347	170	Q	3	23
1990 to 1999 ..................................	876	642	373	257	Q	Q	Q
2000 to 2003 ..................................	334	224	146	70	Q	Q	Q
Census Region and Division
Northeast .......................................	726	600	249	266	84	8	22
New England ...............................	233	188	92	38	53	Q	Q
Middle Atlantic ..............................	493	411	157	229	32	6	Q
Midwest .........................................	1,266	987	504	469	Q	6	44
East North Central ........................	696	572	263	323	Q	3	Q
West North Central ......................	571	415	241	146	Q	Q	Q
South .............................................	1,775	1,217	841	370	Q	7	35
South Atlantic ..............................	874	643	491	147	Q	Q	19
East South Central .......................	348	227	153	72	N	Q	Q
West South Central ......................	553	347	197	151	Q	Q	Q
West ..............................................	878	668	316	340	Q	Q	Q
Mountain ......................................	299	256	109	140	Q	Q	Q
Pacific ..........................................	580	413	207	201	Q	Q	Q
Climate Zone: 30-Year Average
Under 2,000 CDD and --
More than 7,000 HDD ...................	855	683	324	312	41	4	28
5,500-7,000 HDD .........................	1,173	926	454	440	33	8	29
4,000-5,499 HDD .........................	673	554	314	203	19	7	Q
Fewer than 4,000 HDD ................	1,276	883	504	377	Q	6	28
2,000 CDD or More and --
Fewer than 4,000 HDD ................	669	426	315	113	Q	Q	Q
Number of Workers (main shift)
Fewer than 5 .................................	2,653	1,653	995	569	46	Q	78
5 to 9 ..............................................	778	675	365	297	Q	Q	Q
10 to 19 ..........................................	563	514	258	238	Q	Q	Q
20 to 49 ..........................................	398	384	183	203	Q	11	Q
50 to 99 ..........................................	147	142	59	83	Q	Q	Q
100 to 249 ......................................	77	75	35	39	Q	5	Q
250 or More ...................................	30	30	15	15	1	3	Q
Weekly Operating Hours
Fewer than 40 ...............................	1,002	580	347	212	Q	Q	Q
40 to 48 ..........................................	1,117	856	519	318	Q	Q	Q
49 to 60 ..........................................	1,062	845	504	330	17	Q	Q
61 to 84 ..........................................	591	506	252	235	Q	5	Q
85 to 167 ........................................	400	330	145	171	Q	4	Q
Open Continuously ........................	475	356	142	178	23	7	27
Energy Sources (more than
one may apply)
Electricity .......................................	4,404	3,470	1,910	1,445	92	27	128
Natural Gas ....................................	2,391	2,126	757	1,445	19	6	Q
Fuel Oil ...........................................	451	376	206	85	94	3	18
District Heat ...................................	67	61	25	15	Q	27	Q
District Chilled Water ......................	33	31	9	14	Q	10	Q
Propane .........................................	502	428	268	27	25	Q	128
Other ..............................................	132	95	58	20	Q	Q	Q
Primary Space-Heating
Energy Source
Electricity .......................................	1,258	999	823	184	Q	Q	15
Natural Gas ....................................	1,999	1,765	642	1,190	2	Q	Q
Fuel Oil ...........................................	282	226	131	18	79	N	Q
District Heat ...................................	63	57	25	14	Q	25	N
Propane .........................................	308	252	163	N	Q	N	92
Other ..............................................	72	38	Q	Q	Q	N	Q
Cooking Energy Sources
(more than one may apply)
Electricity .......................................	410	407	219	189	10	2	18
Natural Gas ....................................	457	451	116	354	14	2	N
Propane .........................................	108	101	40	Q	Q	Q	47
Energy End Uses (more than
one may apply)
Buildings with Space Heating ........	3,982	3,337	1,815	1,407	87	27	124
Buildings with Cooling ....................	3,625	3,112	1,708	1,326	62	25	109
Buildings with Water Heating .........	3,472	3,472	1,910	1,445	94	27	128
Buildings with Cooking ...................	801	787	316	426	32	3	59
Buildings with Manufacturing ........	119	102	63	42	Q	Q	Q
Buildings with Electricity
Generation ....................................	149	143	69	73	6	5	Q
Water Heating Equipment
Centralized System ........................	2,513	2,513	1,265	1,103	91	22	98
Distributed System .........................	785	785	550	240	Q	Q	Q
Combination of Centralized
and Distributed System .................	175	175	94	102	2	3	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.doe.gov/emeu/cbecs.  * 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. 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.