File layout for File 4 (Records are comma-delimited. First line contains a list of variables on the file. The remaining lines contain the values of the variables with fixed column positions.) Variables on all files DOEID '4-digit identification number' Columns 1-4 NWEIGHT 'The Final Weight' Columns 6-11 MQRESULT 'Mail Questionnaire Codes' Columns 13 REGIONC 'Census Region' Columns 15 DIVISION 'Census Division' Columns 17 LRGSTATE 'Four Largest States' Columns 19 CDD65 'Cooling Degree-Days to base 65, 1-97 TO 12-97' Columns 21-24 HDD65 'Heating Degree-Days to base 65, 1-97 TO 12-97' Columns 26-30 TYPEHUQ 'Type of Home: as report by Respondent' Columns 32 Variables in File 4 only. FUELHEAT 'Main Home Heating Fuel' Columns 34-35 ZFUELHEA 'Imputation Flag for FUELHEAT' Columns 37 DNTHEAT 'Unheated Home Has Heating Equipment' Columns 39 EQUIPM 'Main Home Heating Equipment' Columns 41-42 ZEQUIPM 'Imputation Flag for EQUIPM ' Columns 44 EQUIPAGE 'Age of Main Heating Equipment' Columns 46-47 ZEQUIPAG 'Imputation Flag for EQUIPAGE' Columns 49 HEATOTH 'Heating Equipment Heats Other Units' Columns 51 ZHEATOTH 'Imputation Flag for HEATOTH' Columns 53 EQUIPAUX 'Auxiliary Heating Equipment Used' Columns 55 ZEQUIPAU 'Imputation Flag for EQUIPAUX' Columns 57 REVERSE 'Auxiliary Equipment Is Heat Pump' Columns 59 WARMAIR 'Auxiliary Equipment Is Central Warm Air' Columns 61 STEAMR 'Auxiliary Equipment Is Steam/Hot Water' Columns 63 PERMELEC 'Auxiliary Equipment Is Built In Electric' Columns 65 PIPELESS 'Auxiliary Equipment Is Pipeless Furnace' Columns 67 ROOMHEAT 'Auxiliary Equipment Is Room Heaters' Columns 69 WOODKILN 'Auxiliary Equipment Is Heating Stove' Columns 71 CARRYEL 'Auxiliary Equipment Is Portable Electric Heater' Columns 73 CARRYKER 'Auxiliary Equipment Is Portable Kerosene' Columns 75 CHIMNEY 'Auxiliary Equipment Is Fireplace' Columns 77 RANGE 'Auxiliary Equipment Is Cooking Stove' Columns 79 DIFEQUIP 'Auxiliary Heating Equipment Is Other' Columns 81 DKEQUIP 'Don't Know Auxiliary Heating Equipment' Columns 83 ELECAUX 'Electric Is Auxiliary Heating Fuel' Columns 85 UGASAUX 'Natural Gas Is Auxiliary Heating Fuel' Columns 87 LPGAUX 'LPG Is Auxiliary Heating Fuel' Columns 89 FOILAUX 'Fuel Oil Is Auxiliary Heating Fuel' Columns 91 KEROAUX 'Kerosene Is Auxiliary Heating Fuel' Columns 93 WOODAUX 'Wood Is Auxiliary Heating Fuel' Columns 95 SOLARAUX 'Solar Is Auxiliary Heating Fuel' Columns 97 OTHERAUX 'Other Fuel FOR Auxiliary Heating' Columns 99 DKAUX 'Don't Know Auxiliary Heating Fuel' Columns 101 FURNFUEL 'Auxiliary Warm Air Furnace Fuel' Columns 103-104 RADFUEL 'Auxiliary Steam System Fuel' Columns 106-107 PIPEFUEL 'Auxiliary Pipeless Furnace Fuel' Columns 109-110 RMHTFUEL 'Auxiliary Room Heater Fuel' Columns 112-113 HSFUEL 'Auxiliary Heating Stove Fuel' Columns 115-116 FPFUEL 'Auxiliary Fireplace Fuel' Columns 118-119 NGFPFLUE 'Type Of Fireplace Flue' Columns 121 ZNGFPFLU 'Imputation Flag for NGFPFLUE' Columns 123 USENGFP 'How Gas Fireplace Used In Winter' Columns 125 ZUSENGFP 'Imputation Flag for USENGFP' Columns 127 RNGFUEL 'Auxiliary Cooking Stove Fuel' Columns 129-130 DIFFUEL 'Fuel Used By Other Equipment' Columns 132-133 EQMAMT 'Amount Heat Main Equipment Provides' Columns 135 ZEQMAMT 'Imputation Flag for EQMAMT' Columns 137 ACTSOLAR 'Solar Heat Needs Pumps/Fans' Columns 139 THERMAIN 'USE THERMOSTAT IN WINTER' Columns 141 ZTHERMAI 'Imputation Flag for THERMAIN' Columns 143 SETBACK 'Auto Set-Back/Clock Thermostat' Columns 145 ZSETBACK 'Imputation Flag for SETBACK' Columns 147 AUTOHEAT 'Programmable or Manually Set Thermostat' Columns 149 ZAUTOHEA 'Imputation Flag for AUTOHEAT' Columns 151 TEMPHOME 'Winter-Temp - Someone Home' Columns 153-154 TEMPGONE 'Winter Temp - No One Home' Columns 156-157 TEMPNITE 'Winter Temp - Sleep Hours' Columns 159-160 HEATROOM 'Any Rooms Not Heated Last Winter' Columns 162 HEATNOT 'Number Rooms Unheated Last Winter' Columns 164-165 ZHEATNOT 'Imputation Flag for HEATNOT' Columns 167 Codebook for File 4 Variables DOEID, NWEIGHT, MQRESULT, REGIONC, DIVISION, LRGSTATE CDD65, HDD65, and TYPEHUQ are on all files. DOEID '4-digit identification number' Columns 1-4 Included in all files Numerical Variable Variable length: 4 The variable DOEID will be on all files. Each respondent is assigned an unique value of DOEID. It can be used to merge data from one file with data from another file. Minimum Value: 1,001 Maximum Value: 6,903 NWEIGHT 'The Final Weight' Columns 6-11 Included in all files Numerical Variable Variable length: 6 Minimum Value: 3,841 Maximum Value: 79,878 The sample design for RECS is not a simple random sample. Consequently, to estimate the number or percent of households/housing units with a certain characteristic, the sampling weight should be used. The variable NWEIGHT is the sampling weight for the observation. It is approximately the inverse of the probability of selection. It gives the number of households that the response represents in the sample. For most categorical variables, the codebooks contain both the unweighted frequency and the weighted frequency. The unweighted frequency gives the number of observations, the weighted frequency gives survey estimate of the number of households/housing units for each possible value of the variable. The weighted frequencies are rounded to the nearest 100,000 households. This is the limit of the accuracy for RECS. When the unweighted frequency is less than 10 or the weighted frequency is less than 150,000; then weighted frequency is suppressed. A 'Q' is placed in the frequency to denote that the number is suppressed. This indicates that there are too few observation upon which to determine an accurate estimate. MQRESULT 'Mail Questionnaire Codes' Columns 13 Included in all files Categorical Variable Variable length 1 Mail Questionnaire (MQ) Authorization Form (AF) Personal Interview (PI) 1 = MQ Completed, AF Signed 2 = MQ Completed, AF not required 7 = MQ returned after a PI was completed 8 = PI was completed after MQ was returned 9 = Not Applicable Number Weighted Of Number of Value Observations Households 1 173 3,400,000 2 8 Q 7 1 Q 8 12 200,000 9 5,706 97,600,000 Q = Data withheld because fewer than 10 observation in the category. When MQRESULT equals 1 or 2, the household and housing unit data was not obtained via a personal interview. The data were obtained using a shortened mail questionnaire. A hot-deck imputation procedure was used to match each mail respondent to a personal interview respondent. The critical matching variables were FUELHEAT, FUELH2O, TYPECOOL, TYPEHUQ, and REGIONC. Additional variables used in a scoring function to determine the best match were MONEYPY, NHSLDMEM, VEHICLES, HHAGE, and TOTROOMS. The remaining household/housing unit characteristics for the mail respondents were determined by the values of the matched personal interview respondent. The energy consumption and expenditures data for the mail respondents was based upon data obtained from their energy suppliers. It was not imputed using a hot deck procedure. Questionnaire data from personal interview respondents sometime is missing and needs to be imputed. 'Z' variables are used to indicate the presence of imputed data. For example, if ZURBRUR = 0 then URBRUR was not imputed. If ZURBRUR = 1 then URBRUR was imputed. Census Division/Region: A geographic area consisting of several States defined by the U.S. Department of Commerce, Bureau of the Census. The States are grouped into nine divisions and four regions. Region Division States Northeast New England Connecticut, Maine, Massachusetts, New Hampshire, Vermont, and Rhode Island Middle Atlantic New Jersey, New York, and Pennsylvania Midwest East North Central Illinois, Indiana, Michigan, Ohio, and Wisconsin West North Central Iowa, Kansas, Minnesota, Missouri, Nebraska, North Dakota, and South Dakota South South Atlantic Delaware, the District of Columbia, Florida, Georgia, Maryland, North Carolina, South Carolina, Virginia, and West Virginia East South Central Alabama, Kentucky, Mississippi, and Tennessee West South Central Arkansas, Louisiana, Oklahoma, and Texas West Mountain Arizona, Colorado, Idaho, Montana, Nevada, New Mexico, Utah, and Wyoming Pacific Alaska, California, Hawaii, Oregon, and Washington REGIONC 'Census Region' Columns 15 Included in all files Categorical Variable Variable length 1 1 = Northeast Census Region 2 = Midwest Census Region 3 = South Census Region 4 = West Census Region Number Weighted Of Number of Value Observations Households 1 1,332 19,700,000 2 1,234 24,100,000 3 1,979 35,900,000 4 1,355 21,800,000 DIVISION 'Census Division' Columns 17 Included in all files Categorical Variable Variable length 1 1 = New England Census Division 2 = Middle Atlantic Census Division 3 = East North Central Census Division 4 = West North Central Census Division 5 = South Atlantic Census Division 6 = East South Central Census Division 7 = West South Central Census Division 8 = Mountain Census Division 9 = Pacific Census Division Number Weighted Of Number of Value Observations Households 1 490 5,300,000 2 842 14,400,000 3 783 16,900,000 4 451 7,200,000 5 871 18,700,000 6 527 6,300,000 7 581 10,800,000 8 466 6,200,000 9 889 15,600,000 LRGSTATE 'Four Largest States' Columns 19 Included in all files Categorical Variable Variable length 1 0 = Other 1 = New York State 2 = California 3 = Texas 4 = Florida Number Weighted Of Number of Value Observations Households 0 4,258 70,300,000 1 399 6,800,000 2 609 11,500,000 3 369 7,000,000 4 265 5,900,000 CDD65 and HDD65 are weather data. The values of CDD65 and HDD65 were based upon data obtained from the NOAA. A random error was added to both HDD65 and CDD65 to mask the location of the weather station from which the data was obtained. CDD65 'Cooling Degree-Days to base 65, 1-97 TO 12-97' Columns 21-24 Included in all files Numerical Variable Variable length 4 Minimum Value: 0 Maximum Value: 5,954 HDD65 'Heating Degree-Days to base 65, 1-97 TO 12-97' Columns 26-30 Included in all files Numerical Variable Variable length 5 Minimum Value: 0 Maximum Value: 11,672 Cooling degree days are the number of degrees the average daily temperature (ADT) is above the base temperature. Heating degree days are the number of degrees the ADT is below the base temperature. To calculate daily degree days (base 65 degrees): ADT = (daily high + daily low)/2 CDD(daily) = 0 if ADT <= 65 = ADT - 65 if ADT > 65 HDD(daily) = 0 if ADT >= 65 = 65 - ADT if ADT < 65. Annual degrees days are calculated by summing the daily degree days. The .5 is carried over in the summation. The total is rounded up after the summation. TYPEHUQ 'Type of Home: as report by Respondent' Columns 32 Included in all files Categorical Variable Variable length: 1 Question (A-2B) different than RECS93 Variable was constructed form responses to questions A-2A, A-2B, A-5, and A-9 Imputed for Nonresponse There is a fine line between the definitions of various types of housing units. The distinction between a single-family attached unit and a unit in an apartment building is particularly complex. The collection and editing of the data on housing type changed from the paper-and-pencil questionnaire for the 1993 RECS to the CAPI questionnaire for the 1997 RECS. The change in the data collection and editing procedures may have contributed to changes in the survey results. For example, the estimated number of occupied single-family attached units increased from 7.3 million for the 1993 RECS to 10.0 million for the 1997 RECS. Conversely, the number of occupied housing units in buildings with two to four units decreased from 8.0 million for the 1993 RECS to 5.6 million for the 1997 RECS. 1 = Mobile Home 2 = Single-Family detached 3 = Single-Family Attached 4 = Apartment in Building containing 2-4 units 5 = Apartment in Building Containing 5 or more units Number Weighted Of Number of Value Observations Households 1 402 6,300,000 2 3,661 63,800,000 3 552 9,900,000 4 351 5,600,000 5 934 15,800,000 The remaining variables are present only on File 4 FUELHEAT 'Main Home Heating Fuel' Columns 34-35 Categorical Variable Variable length 2 Question D-1A Question different than RECS93 COAL/COKE Missing from RECS 97 answer options Imputed for Nonresponse 0 = Don't Heat Home 1 = Natural Gas From Underground Pipes 2 = Bottled Gas (LPG or Propane) 3 = Fuel Oil 4 = Kerosene 5 = Electricity 7 = Wood 8 = Solar 9 = District Steam 21 = Some Other Fuel Number Weighted Of Number of Value Observations Households 0 56 800,000 1 2,954 53,500,000 2 306 4,600,000 3 676 9,500,000 4 70 1,000,000 5 1,663 29,600,000 7 145 2,200,000 8 1 Q 9 8 Q 21 21 300,000 Q = Data withheld because fewer than 10 observation in the category. ZFUELHEA 'Imputation Flag for FUELHEAT' Columns 37 Categorical Variable Variable length 1 0 = FUELHEAT not imputed 1 = FUELHEAT imputed Number Weighted Of Number of Value Observations Households 0 5,851 100,600,000 1 49 900,000 DNTHEAT 'Unheated Home Has Heating Equipment' Columns 39 Categorical Variable Variable length 1 Question D-1B Question first used in 1997 RECS 1 = Have Equipment, But don't use It 2 = Don't Have Any Heating Equipment 9 = Not Applicable Number Weighted Of Number of Value Observations Households 1 32 500,000 2 56 800,000 9 5,812 100,200,000 EQUIPM 'Main Home Heating Equipment' Columns 41-42 Categorical Variable Variable length 2 Question D-2 Question different than RECS93 RECS 97 Answer Option Phrased Somewhat Differently Imputed for Nonresponse 2 = Steam 3 = Central Warm-Air Furnace With Ducts 4 = Heat Pump 5 = Built-In Electric Units In The Walls, etc. 6 = Built-In Floor 7 = Room Heater Burning Gas, Oil, Or Kerosene 8 = Heating Stove 9 = Fireplace 10 = Portable Electric Heaters 11 = Portable Kerosene Heaters 12 = Cooking Stove (Used to Heat Home) 21 = Equipment Not Listed 99 = Not Applicable Number Weighted Of Number of Value Observations Households 2 879 13,400,000 3 3,148 56,600,000 4 485 9,700,000 5 458 7,500,000 6 277 4,800,000 7 298 4,300,000 8 110 1,600,000 9 17 300,000 10 59 900,000 11 26 400,000 12 27 400,000 21 60 800,000 99 56 800,000 ZEQUIPM 'Imputation Flag for EQUIPM ' Columns 44 Categorical Variable Variable length 1 0 = EQUIPM not imputed 1 = EQUIPM imputed Number Weighted Of Number of Value Observations Households 0 5,884 101,200,000 1 16 300,000 EQUIPAGE 'Age of Main Heating Equipment' Columns 46-47 Categorical Variable Variable length 2 Question D-3 Question same as RECS93 Imputed for Nonresponse 1 = LESS THAN 2 YEARS OLD 2 = 2 TO 4 YEARS OLD 3 = 5 TO 9 YEARS OLD 4 = 10 TO 19 YEARS OLD 5 = 20 YEARS OR OLDER 6 = AS OLD AS THE HOME (IF VOLUNTEERED) 96 = Don't Know 99 = Not Applicable Number Weighted Of Number of Value Observations Households 1 498 8,700,000 2 697 12,100,000 3 1,091 19,900,000 4 1,425 25,000,000 5 1,568 26,000,000 96 565 9,000,000 99 56 800,000 ZEQUIPAG 'Imputation Flag for EQUIPAGE' Columns 49 Categorical Variable Variable length 1 0 = EQUIPAGE not imputed 1 = EQUIPAGE imputed Number Weighted Of Number of Value Observations Households 0 5,888 101,300,000 1 12 200,000 HEATOTH 'Heating Equipment Heats Other Units' Columns 51 Categorical Variable Variable length 1 Question D-4 Question same as RECS93 Imputed for Nonresponse 0 = No 1 = Yes 9 = Not Applicable Number Weighted Of Number of Value Observations Households 0 5,407 93,700,000 1 437 7,000,000 9 56 800,000 ZHEATOTH 'Imputation Flag for HEATOTH' Columns 53 Categorical Variable Variable length 1 0 = HEATOTH not imputed 1 = HEATOTH imputed Number Weighted Of Number of Value Observations Households 0 5,880 101,200,000 1 20 300,000 EQUIPAUX 'Auxiliary Heating Equipment Used' Columns 55 Categorical Variable Variable length 1 Question D-5A Question different than RECS93 In RECS 93 Question Not Directly Asked Imputed for Nonresponse 0 = No 1 = Yes 9 = Not Applicable Number Weighted Of Number of Value Observations Households 0 3,878 66,500,000 1 1,966 34,300,000 9 56 800,000 Q = Data withheld because fewer than 10 observation in the category. ZEQUIPAU 'Imputation Flag for EQUIPAUX' Columns 57 Categorical Variable Variable length 1 0 = EQUIPAUX not imputed 1 = EQUIPAUX imputed Number Weighted Of Number of Value Observations Households 0 5,897 101,400,000 1 3 Q Q = Data withheld because fewer than 10 observation in the category. REVERSE 'Auxiliary Equipment Is Heat Pump' Columns 59 Categorical Variable Variable length 1 Question D-5B Question same as RECS93 0 = No 1 = Yes 9 = Not Applicable Number Weighted Of Number of Value Observations Households 0 5,819 100,200,000 1 25 500,000 9 56 800,000 WARMAIR 'Auxiliary Equipment Is Central Warm Air' Columns 61 Categorical Variable Variable length 1 QUESTION D-5C Question same as RECS93 0 = No 1 = Yes 9 = Not Applicable Number Weighted Of Number of Value Observations Households 0 5,778 99,600,000 1 66 1,100,000 9 56 800,000 STEAMR 'Auxiliary Equipment Is Steam/Hot Water' Columns 63 Categorical Variable Variable length 1 Question D-5D Question different than RECS93 RECS 97 Specifies Equipment Must Be In Each Room 0 = No 1 = Yes 9 = Not Applicable Number Weighted Of Number of Value Observations Households 0 5,825 100,400,000 1 19 300,000 9 56 800,000 PERMELEC 'Auxiliary Equipment Is Built In Electric' Columns 65 Categorical Variable Variable length 1 Question D-5E Question different than RECS93 RECS 97 Specifies Equipment Must Be In Each Room 0 = No 1 = Yes 9 = Not Applicable Number Weighted Of Number of Value Observations Households 0 5,691 98,000,000 1 153 2,700,000 9 56 800,000 PIPELESS 'Auxiliary Equipment Is Pipeless Furnace' Columns 67 Categorical Variable Variable length 1 Question D-5F Question same as RECS93 0 = No 1 = Yes 9 = Not Applicable Number Weighted Of Number of Value Observations Households 0 5,818 100,300,000 1 26 400,000 9 56 800,000 ROOMHEAT 'Auxiliary Equipment Is Room Heaters' Columns 69 Categorical Variable Variable length 1 Question D-5G Question different than RECS93 In RECS 97 Fuels In Answer Option Different 0 = No 1 = Yes 9 = Not Applicable Number Weighted Of Number of Value Observations Households 0 5,690 98,100,000 1 154 2,600,000 9 56 800,000 WOODKILN 'Auxiliary Equipment Is Heating Stove' Columns 71 Categorical Variable Variable length 1 question D-5H Question same as RECS93 0 = No 1 = Yes 9 = Not Applicable Number Weighted Of Number of Value Observations Households 0 5,609 97,200,000 1 235 3,500,000 9 56 800,000 CARRYEL 'Auxiliary Equipment Is Portable Electric Heater' Columns 73 Categorical Variable Variable length 1 Question D-5I Question same as RECS93 0 = No 1 = Yes 9 = Not Applicable Number Weighted Of Number of Value Observations Households 0 5,137 88,400,000 1 707 12,300,000 9 56 800,000 CARRYKER 'Auxiliary Equipment Is Portable Kerosene' Columns 75 Categorical Variable Variable length 1 Question D-5J Question same as RECS93 0 = No 1 = Yes 9 = Not Applicable Number Weighted Of Number of Value Observations Households 0 5,711 98,600,000 1 133 2,100,000 9 56 800,000 CHIMNEY 'Auxiliary Equipment Is Fireplace' Columns 77 Categorical Variable Variable length 1 Question D-5K Question same as RECS93 0 = No 1 = Yes 9 = Not Applicable Number Weighted Of Number of Value Observations Households 0 5,204 88,200,000 1 640 12,500,000 9 56 800,000 RANGE 'Auxiliary Equipment Is Cooking Stove' Columns 79 Categorical Variable Variable length 1 Question D-5L Question different than RECS93 RECS 93 Asked About Range And Oven 0 = No 1 = Yes 9 = Not Applicable Number Weighted Of Number of Value Observations Households 0 5,791 99,900,000 1 53 800,000 9 56 800,000 DIFEQUIP 'Auxiliary Heating Equipment Is Other' Columns 81 Categorical Variable Variable length 1 Question D-5M Question same as RECS93 0 = No 1 = Yes 9 = Not Applicable Number Weighted Of Number of Value Observations Households 0 5,834 100,500,000 1 10 200,000 9 56 800,000 DKEQUIP 'Don't Know Auxiliary Heating Equipment' Columns 83 Categorical Variable Variable length 1 Question D-5N Question first used in 1997 RECS 0 = No 1 = Yes 9 = Not Applicable Number Weighted Of Number of Value Observations Households 0 5,844 100,700,000 9 56 800,000 ELECAUX 'Electric Is Auxiliary Heating Fuel' Columns 85 Categorical Variable Variable length 1 Question D-5O Question same as RECS93 0 = No 1 = Yes 9 = Not Applicable Number Weighted Of Number of Value Observations Households 0 4,941 85,000,000 1 903 15,700,000 9 56 800,000 UGASAUX 'Natural Gas Is Auxiliary Heating Fuel' Columns 87 Categorical Variable Variable length 1 Question D-5P Question same as RECS93 0 = No 1 = Yes 9 = Not Applicable Number Weighted Of Number of Value Observations Households 0 5,591 95,800,000 1 253 4,900,000 9 56 800,000 LPGAUX 'LPG Is Auxiliary Heating Fuel' Columns 89 Categorical Variable Variable length 1 Question D-5Q Question same as RECS93 0 = No 1 = Yes 9 = Not Applicable Number Weighted Of Number of Value Observations Households 0 5,762 99,400,000 1 82 1,300,000 9 56 800,000 FOILAUX 'Fuel Oil Is Auxiliary Heating Fuel' Columns 91 Categorical Variable Variable length 1 Question D-5R Question same as RECS93 0 = No 1 = Yes 9 = Not Applicable Number Weighted Of Number of Value Observations Households 0 5,811 100,200,000 1 33 500,000 9 56 800,000 KEROAUX 'Kerosene Is Auxiliary Heating Fuel' Columns 93 Categorical Variable Variable length 1 Question D-5S Question same as RECS93 0 = No 1 = Yes 9 = Not Applicable Number Weighted Of Number of Value Observations Households 0 5,681 98,100,000 1 163 2,600,000 9 56 800,000 WOODAUX 'Wood Is Auxiliary Heating Fuel' Columns 95 Categorical Variable Variable length 1 Question D-5T Question same as RECS93 0 = No 1 = Yes 9 = Not Applicable Number Weighted Of Number of Value Observations Households 0 5,110 87,800,000 1 734 12,900,000 9 56 800,000 SOLARAUX 'Solar Is Auxiliary Heating Fuel' Columns 97 Categorical Variable Variable length 1 Question D-5U Question same as RECS93 0 = No 1 = Yes 9 = Not Applicable Number Weighted Of Number of Value Observations Households 0 5,840 100,600,000 1 4 Q 9 56 800,000 Q = Data withheld because fewer than 10 observation in the category. OTHERAUX 'Other Fuel FOR Auxiliary Heating' Columns 99 Categorical Variable Variable length 1 Question D-5V Question same as RECS93 0 = No 1 = Yes 9 = Not Applicable Number Weighted Of Number of Value Observations Households 0 5,832 100,500,000 1 12 200,000 9 56 800,000 DKAUX 'Don't Know Auxiliary Heating Fuel' Columns 101 Categorical Variable Variable length 1 Question D-5W Question same as RECS93 0 = No 1 = Yes 9 = Not Applicable Number Weighted Of Number of Value Observations Households 0 5,844 100,700,000 9 56 800,000 FURNFUEL 'Auxiliary Warm Air Furnace Fuel' Columns 103-104 Categorical Variable Variable length 2 Question D-5X Question first used in 1997 RECS 1 = Natural Gas From Underground Pipes 2 = Bottled Gas (LPG or Propane) 3 = Fuel Oil 4 = Kerosene 5 = Electricity 7 = Wood 99 = Not Applicable Number Weighted Of Number of Value Observations Households 1 22 400,000 2 11 100,000 3 14 200,000 4 1 Q 5 15 300,000 7 3 Q 99 5,834 100,400,000 Q = Data withheld because fewer than 10 observation in the category. RADFUEL 'Auxiliary Steam System Fuel' Columns 106-107 Categorical Variable Variable length 2 Question D-5Y Question first used in 1997 RECS 1 = Natural Gas From Underground Pipes 2 = Bottled Gas (LPG or Propane) 3 = Fuel Oil 5 = Electricity 8 = Solar 99 = Not Applicable Number Weighted Of Number of Value Observations Households 1 2 Q 2 2 Q 3 12 200,000 5 1 Q 8 2 Q 99 5,881 101,200,000 Q = Data withheld because fewer than 10 observation in the category. PIPEFUEL 'Auxiliary Pipeless Furnace Fuel' Columns 109-110 Categorical Variable Variable length 2 Question D-5Z Question first used in 1997 RECS 1 = Natural Gas From Underground Pipes 2 = Bottled Gas (LPG or Propane) 3 = Fuel Oil 5 = Electricity 99 = Not Applicable Number Weighted Of Number of Value Observations Households 1 17 300,000 2 5 Q 3 2 Q 5 2 Q 99 5,874 101,100,000 Q = Data withheld because fewer than 10 observation in the category. RMHTFUEL 'Auxiliary Room Heater Fuel' Columns 112-113 Categorical Variable Variable length 2 Question D-5AA Question first used in 1997 RECS 1 = Natural Gas From Underground Pipes 2 = Bottled Gas (LPG or Propane) 3 = Fuel Oil 4 = Kerosene 9 = Not Applicable Number Weighted Of Number of Value Observations Households 1 82 1,400,000 2 38 600,000 3 5 Q 4 29 500,000 9 5,746 98,900,000 Q = Data withheld because fewer than 10 observation in the category. HSFUEL 'Auxiliary Heating Stove Fuel' Columns 115-116 Categorical Variable Variable length 2 Question D-5BB Question first used in 1997 RECS 7 = Wood 21 = Other 99 = Not Applicable Number Weighted Of Number of Value Observations Households 7 227 3,400,000 21 8 Q 99 5,665 98,000,000 Q = Data withheld because fewer than 10 observation in the category. FPFUEL 'Auxiliary Fireplace Fuel' Columns 118-119 Categorical Variable Variable length 2 Question D-5CC Question first used in 1997 RECS 1 = Natural Gas From Underground Pipes 2 = Bottled Gas (LPG or Propane) 7 = Wood 21 = Some Other Fuel 99 = Not Applicable Number Weighted Of Number of Value Observations Households 1 105 2,400,000 2 18 300,000 7 513 9,700,000 21 4 Q 99 5,260 89,000,000 Q = Data withheld because fewer than 10 observation in the category. NGFPFLUE 'Type Of Fireplace Flue' Columns 121 Categorical Variable Variable length 1 Question D-5DD Question first used in 1997 RECS 1 = Flue To The Outside 2 = Flueless (Self-Contained) 9 = Not Applicable Number Weighted Of Number of Value Observations Households 1 99 2,300,000 2 24 400,000 9 5,777 98,800,000 ZNGFPFLU 'Imputation Flag for NGFPFLUE' Columns 123 Categorical Variable Variable length 1 0 = NGFPFLUE not imputed 1 = NGFPFLUE imputed Number Weighted Of Number of Value Observations Households 0 5,899 101,500,000 1 1 Q Q = Data withheld because fewer than 10 observation in the category. USENGFP 'How Gas Fireplace Used In Winter' Columns 125 Categorical Variable Variable length 1 Question D-5EE Question first used in 1997 RECS 1 = Most Days 2 = About Once a Week 3 = Fewer Than 4 Times Each Month 8 = No Answer 9 = Not Applicable Number Weighted Of Number of Value Observations Households 1 57 1,100,000 2 34 700,000 3 31 800,000 8 1 Q 9 5,777 98,800,000 Q = Data withheld because fewer than 10 observation in the category. ZUSENGFP 'Imputation Flag for USENGFP' Columns 127 Categorical Variable Variable length 1 0 = USENGFP not imputed 1 = USENGFP imputed Number Weighted Of Number of Value Observations Households 0 5,899 101,500,000 1 1 Q Q = Data withheld because fewer than 10 observation in the category. RNGFUEL 'Auxiliary Cooking Stove Fuel' Columns 129-130 Categorical Variable Variable length 2 Question D-5FF Question first used in 1997 RECS 1 = Natural Gas From Underground Pipes 2 = Bottled Gas (LPG or Propane) 5 = Electricity 7 = Wood 99 = Not Applicable Number Weighted Of Number of Value Observations Households 1 29 400,000 2 6 Q 5 15 200,000 7 3 Q 99 5,847 100,700,000 Q = Data withheld because fewer than 10 observation in the category. DIFFUEL 'Fuel Used By Other Equipment' Columns 132-133 Categorical Variable Variable length 2 Question D-5GG Question first used in 1997 RECS 1 = Natural Gas From Underground Pipes 2 = Bottled Gas (LPG or Propane) 3 = Fuel Oil 5 = Electricity 7 = Wood 8 = Solar 99 = Not Applicable Number Weighted Of Number of Value Observations Households 1 1 Q 2 3 Q 3 1 Q 5 2 Q 7 1 Q 8 2 Q 99 5,890 101,300,000 Q = Data withheld because fewer than 10 observation in the category. EQMAMT 'Amount Heat Main Equipment Provides' Columns 135 Categorical Variable Variable length 1 Question D-6 Question same as RECS93 Imputed for Nonresponse 1 = Almost All 2 = About Three Fourths 3 = Closer To Half 9 = Not Applicable Number Weighted Of Number of Value Observations Households 1 5,395 93,300,000 2 250 4,200,000 3 199 3,200,000 9 56 800,000 ZEQMAMT 'Imputation Flag for EQMAMT' Columns 137 Categorical Variable Variable length 1 0 = EQMAMT not imputed 1 = EQMAMT imputed Number Weighted Of Number of Value Observations Households 0 5,790 99,600,000 1 110 1,900,000 ACTSOLAR 'Solar Heat Needs Pumps/Fans' Columns 139 Categorical Variable Variable length 1 Question D-7 Question same as RECS93 0 = No 1 = Yes 9 = Not Applicable Number Weighted Of Number of Value Observations Households 0 2 Q 1 3 Q 9 5,895 101,400,000 Q = Data withheld because fewer than 10 observation in the category. THERMAIN 'USE THERMOSTAT IN WINTER' Columns 141 Categorical Variable Variable length 1 Question D-8A Question same as RECS93 Imputed for Nonresponse 0 = No 1 = Yes 9 = Not Applicable Number Weighted Of Number of Value Observations Households 0 945 14,700,000 1 4,899 86,000,000 9 56 800,000 ZTHERMAI 'Imputation Flag for THERMAIN' Columns 143 Categorical Variable Variable length 1 0 = THERMAIN not imputed 1 = THERMAIN imputed Number Weighted Of Number of Value Observations Households 0 5,898 101,500,000 1 2 Q Q = Data withheld because fewer than 10 observation in the category. SETBACK 'Auto Set-Back/Clock Thermostat' Columns 145 Categorical Variable Variable length 1 Question D-8B Question same as RECS93 Imputed for Nonresponse The 1993 and 1997 RECS both contained questions on the presence of a programmable thermostat. In both surveys, the thermostats were referred to as "set-back or clock thermostats," but not programmable thermostats. For the 1993 RECS, the question was placed in the section on conservation measures and usage (following questions on insulation, weather stripping, and caulking). For the 1997 RECS, it was placed in the space-heating section, immediately following the question on the presence of a thermostat. The 1997 RECS also included a question that asked respondents if they programmed the thermostat or used the manual features. Based on the 1993 RECS, an estimated 10.8 million households had programmable thermostats in 1993. Based on the 1997 RECS, an estimated 44.9 million households had programmable thermostats in 1997. Of these 44.9 million, an estimated 11.6 million programmed their thermostats and an estimated 33.2 million used the manual features. The large increase in the number of housing units with programmable thermostats from 1993 to 1997 is questionable. The change in the placement of the question may have contributed to the large change in the survey results. In addition, the question concerning programmed versus manual use of the thermostats may have changed how the interviewers coded the question on the presence of a programmable thermostat. 0 = No 1 = Yes 9 = Not Applicable Number Weighted Of Number of Value Observations Households 0 2,356 41,100,000 1 2,543 44,900,000 9 1,001 15,500,000 ZSETBACK 'Imputation Flag for SETBACK' Columns 147 Categorical Variable Variable length 1 0 = SETBACK not imputed 1 = SETBACK imputed Number Weighted Of Number of Value Observations Households 0 5,878 101,100,000 1 22 300,000 AUTOHEAT 'Programmable or Manually Set Thermostat' Columns 149 Categorical Variable Variable length 1 Question D-8C Question same as RECS93 Imputed for Nonresponse 1 = The Thermostat is Programmed 2 = Use The Manual Features 3 = Use Both Features 9 = Not Applicable Number Weighted Of Number of Value Observations Households 1 616 11,600,000 2 1,922 33,200,000 3 5 Q 9 3,357 56,600,000 Q = Data withheld because fewer than 10 observation in the category. ZAUTOHEA 'Imputation Flag for AUTOHEAT' Columns 151 Categorical Variable Variable length 1 0 = AUTOHEAT not imputed 1 = AUTOHEAT imputed Number Weighted Of Number of Value Observations Households 0 5,888 101,300,000 1 12 200,000 TEMPHOME 'Winter-Temp - Someone Home' Columns 153-154 Numerical Variable Variable length 2 Question D-9A Question same as RECS93 95 = Heat Turned Off 96 = Don't Know 97 = Refused 98 = No Answer 99 = Not Applicable Number Weighted Of Number of Value Observations Households 40-49 5 Q 50-59 46 700,000 60-69 2,004 34,700,000 70-79 3,216 55,800,000 80-89 153 2,400,000 90-94 10 200,000 95 118 2,100,000 96 286 4,600,000 97 4 Q 98 2 Q 99 56 800,000 Q = Data withheld because fewer than 10 observation in the category. TEMPGONE 'Winter Temp - No One Home' Columns 156-157 Numerical Variable Variable length 2 Question D-9B Question same as RECS93 1 = Someone Home All Day(Volunteered) 95 = Heat Turned Off 96 = Don't Know 97 = Refused 98 = No Answer 99 = Not Applicable Number Weighted Of Number of Value Observations Households 1 7 Q 40-49 43 600,000 50-59 310 4,900,000 60-69 2,807 48,800,000 70-79 1,655 29,400,000 80-89 66 1,100,000 90-94 4 Q 95 609 10,400,000 96 328 5,200,000 97 3 Q 98 2 Q 99 56 800,000 Q = Data withheld because fewer than 10 observation in the category. TEMPNITE 'Winter Temp - Sleep Hours' Columns 159-160 Numerical Variable Variable length 2 Question D-9C Question same as RECS93 95 = Heat Turned Off 96 = Don't Know 97 = Refused 98 = No Answer 99 = Not Applicable Number Weighted Of Number of Value Observations Households 40-49 26 400,000 50-59 243 4,000,000 60-69 2,799 48,500,000 70-79 1,971 34,500,000 80-89 95 1,600,000 90-94 5 Q 95 430 7,300,000 96 268 4,200,000 97 5 Q 98 2 Q 99 56 800,000 Q = Data withheld because fewer than 10 observation in the category. HEATROOM 'Any Rooms Not Heated Last Winter' Columns 162 Categorical Variable Variable length 1 Question D-10A Question first used in 1997 RECS 0 = No 1 = Yes 9 = Not Applicable Number Weighted Of Number of Value Observations Households 0 4,816 83,300,000 1 1,028 17,400,000 9 56 800,000 HEATNOT 'Number Rooms Unheated Last Winter' Columns 164-165 Numerical Variable Variable length 2 Question D-10B Question first used in 1997 RECS Imputed for Nonresponse Number Weighted Of Number of Value Observations Households 0 4,872 84,100,000 1 471 7,900,000 2 299 5,200,000 3 149 2,600,000 4 73 1,200,000 5 36 600,000 ZHEATNOT 'Imputation Flag for HEATNOT' Columns 167 Categorical Variable Variable length 1 0 = HEATNOT not imputed 1 = HEATNOT imputed Number Weighted Of Number of Value Observations Households 0 5,876 101,100,000 1 24 400,000