Table 5.2b – Dwelling Improvements To Reduce Energy Consumption By Construction Year
Number of households by year of construction | ||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Before 1946 | 1946-1960 | 1961-1977 | 1978-1983 | 1984-1995 | 1996-2000 | 2001-2010 | 2011 or later | Not stated | ||||||||||
Made any improvements to the dwelling that reduce energy consumption since January 1st, 2015 | ||||||||||||||||||
No improvements made | 366,473 | A | 318,648 | A | 604,021 | A | 244,353 | A | 421,074 | A | 165,542 | A | 494,943 | A | 445,661 | A | - | U |
Improvements have been made | 679,378 | A | 674,689 | A | 1,468,107 | A | 588,993 | A | 1,155,086 | A | 453,353 | A | 847,844 | A | 252,457 | A | - | U |
Valid Skip Footnote 1 | 351,215 | A | 696,690 | A | 1,228,618 | A | 646,612 | A | 641,225 | A | 207,244 | M | 513,253 | A | 442,201 | A | 289,468 | M |
Don’t know | - | U | - | U | 43,268 | M | - | U | - | U | - | U | - | U | - | U | - | U |
Not stated | - | U | - | U | 92,854 | M | 36,968 | M | 58,948 | M | - | U | - | U | - | U | - | U |
Households made improvements to space heating equipment | ||||||||||||||||||
5 years or less (January 1st, 2015 - December 31st, 2019) | 195,963 | M | 218,220 | A | 430,756 | A | 182,348 | A | 439,633 | A | 182,841 | M | 247,672 | M | 48,130 | M | - | U |
No improvements made | 433,454 | A | 415,249 | A | 924,418 | A | 368,115 | A | 633,993 | A | 240,362 | M | 537,202 | A | 196,933 | A | - | U |
Valid Skip Footnote 2 | 717,688 | A | 1,015,338 | A | 1,832,639 | A | 890,966 | A | 1,062,299 | A | 372,786 | A | 1,008,195 | A | 887,863 | A | 301,863 | M |
Not stated | 147,944 | M | 108,705 | M | 249,055 | A | 115,142 | M | 173,467 | A | 82,735 | M | 132,186 | M | - | U | - | U |
Households made improvements to water heating equipment | ||||||||||||||||||
5 years or less (January 1st, 2015 - December 31st, 2019) | 229,419 | M | 265,319 | A | 531,974 | A | 211,670 | A | 512,888 | A | 226,627 | M | 324,808 | A | 61,054 | M | - | U |
No improvements made | 417,255 | A | 377,667 | A | 865,067 | A | 357,989 | A | 588,062 | A | 197,125 | A | 466,016 | A | 184,010 | A | - | U |
Valid Skip Footnote 2 | 717,688 | A | 1,015,338 | A | 1,832,639 | A | 890,966 | A | 1,062,299 | A | 372,786 | A | 1,008,195 | A | 887,863 | A | 301,863 | M |
Not stated | 130,687 | M | 99,189 | M | 207,187 | A | 95,947 | M | 146,144 | M | 82,187 | M | 126,236 | M | - | U | - | U |
Households made improvements to windows (including patio doors) | ||||||||||||||||||
5 years or less (January 1st, 2015 - December 31st, 2019) | 258,616 | M | 224,842 | A | 467,912 | A | 206,076 | A | 424,075 | A | 85,962 | M | 160,720 | M | - | U | - | U |
No improvements made | 375,077 | A | 429,085 | A | 914,763 | A | 346,053 | A | 665,713 | A | 340,366 | A | 617,714 | A | 223,142 | A | - | U |
Valid Skip Footnote 2 | 717,688 | A | 1,015,338 | A | 1,832,639 | A | 890,966 | A | 1,062,299 | A | 372,786 | A | 1,008,195 | A | 887,863 | A | 301,863 | M |
Not stated | 143,669 | M | 88,248 | M | 221,553 | A | 113,477 | M | 157,305 | M | 79,611 | M | 138,626 | M | - | U | - | U |
Households made improvements to caulking or weather-stripping around existing windows and doors | ||||||||||||||||||
5 years or less (January 1st, 2015 - December 31st, 2019) | 188,940 | M | 128,187 | M | 295,576 | A | 115,394 | M | 244,277 | A | 87,100 | M | 144,057 | M | - | U | - | U |
No improvements made | 434,843 | A | 511,319 | A | 1,065,577 | A | 431,637 | A | 839,765 | A | 335,939 | A | 656,335 | A | 194,275 | A | - | U |
Valid Skip Footnote 2 | 717,688 | A | 1,015,338 | A | 1,832,639 | A | 890,966 | A | 1,062,299 | A | 372,786 | A | 1,008,195 | A | 887,863 | A | 301,863 | M |
Not stated | 153,578 | M | 102,669 | M | 243,076 | A | 118,574 | M | 163,051 | A | 82,899 | M | 116,668 | M | - | U | - | U |
Households made improvements to the insulation of the basement or crawl space walls | ||||||||||||||||||
5 years or less (January 1st, 2015 - December 31st, 2019) | - | U | 89,034 | M | 150,020 | A | 56,092 | M | 66,835 | M | - | U | 54,161 | M | - | U | - | U |
No improvements made | 444,876 | A | 544,333 | A | 1,201,767 | A | 482,331 | A | 975,483 | A | 388,490 | A | 726,999 | A | 222,137 | A | - | U |
Valid Skip Footnote 2 | 717,688 | A | 1,015,338 | A | 1,832,639 | A | 890,966 | A | 1,062,299 | A | 372,786 | A | 1,008,195 | A | 887,863 | A | 301,863 | M |
Not stated | 162,280 | M | 108,807 | M | 252,441 | A | 127,184 | M | 204,775 | A | 88,492 | M | 135,900 | M | - | U | - | U |
Households made improvements to the exterior wall siding | ||||||||||||||||||
5 years or less (January 1st, 2015 - December 31st, 2019) | 99,507 | M | 78,727 | M | 155,071 | M | 62,163 | M | 92,564 | M | - | U | - | U | - | U | - | U |
No improvements made | 514,554 | A | 550,890 | A | 1,189,436 | A | 473,081 | A | 955,334 | A | 402,177 | A | 763,548 | A | 221,732 | A | - | U |
Valid Skip Footnote 2 | 717,688 | A | 1,015,338 | A | 1,832,639 | A | 890,966 | A | 1,062,299 | A | 372,786 | A | 1,008,195 | A | 887,863 | A | 301,863 | M |
Not stated | 163,301 | M | 112,558 | M | 259,722 | A | 130,362 | M | 199,195 | A | 90,767 | M | 142,466 | M | - | U | - | U |
Households made improvements to the insulation of the water pipes | ||||||||||||||||||
5 years or less (January 1st, 2015 - December 31st, 2019) | 51,208 | M | - | U | 82,104 | M | 39,834 | M | 71,293 | M | - | U | - | U | - | U | - | U |
No improvements made | 571,311 | A | 606,781 | A | 1,255,759 | A | 490,081 | A | 983,247 | A | 405,377 | A | 760,515 | A | 218,840 | A | - | U |
Valid Skip Footnote 2 | 717,688 | A | 1,015,338 | A | 1,832,639 | A | 890,966 | A | 1,062,299 | A | 372,786 | A | 1,008,195 | A | 887,863 | A | 301,863 | M |
Not stated | 154,843 | M | 105,426 | M | 266,367 | A | 135,691 | M | 192,554 | A | 88,783 | M | 142,951 | M | - | U | - | U |
Households made improvements to the insulation of the roof or the attic | ||||||||||||||||||
5 years or less (January 1st, 2015 - December 31st, 2019) | 80,020 | M | 92,642 | M | 190,783 | A | 70,675 | M | 130,426 | A | - | U | - | U | - | U | - | U |
No improvements made | 532,815 | A | 551,108 | A | 1,166,264 | A | 463,169 | A | 929,720 | A | 340,733 | A | 731,027 | A | 219,406 | A | - | U |
Valid Skip Footnote 2 | 717,688 | A | 1,015,338 | A | 1,832,639 | A | 890,966 | A | 1,062,299 | A | 372,786 | A | 1,008,195 | A | 887,863 | A | 301,863 | M |
Not stated | 164,527 | M | 98,424 | M | 247,182 | A | 131,763 | M | 186,947 | A | 87,038 | M | 136,192 | M | - | U | - | U |
Households made improvements to the insulation of any exterior walls (excluding basement) | ||||||||||||||||||
5 years or less (January 1st, 2015 - December 31st, 2019) | 72,892 | M | 51,537 | M | 89,239 | M | - | U | 35,055 | M | - | U | - | U | - | U | - | U |
No improvements made | 550,044 | A | 574,855 | A | 1,250,607 | A | 515,544 | A | 1,004,774 | A | 406,196 | A | 762,331 | A | 227,875 | A | - | U |
Valid Skip Footnote 2 | 717,688 | A | 1,015,338 | A | 1,832,639 | A | 890,966 | A | 1,062,299 | A | 372,786 | A | 1,008,195 | A | 887,863 | A | 301,863 | M |
Not stated | 154,426 | M | 115,783 | M | 264,383 | A | 129,641 | M | 207,265 | A | 84,511 | M | 139,451 | M | - | U | - | U |
Households made improvement(s) to exterior doors (including garage doors) | ||||||||||||||||||
5 years or less (January 1st, 2015 - December 31st, 2019) | 121,668 | M | 155,174 | A | 409,193 | A | 139,748 | A | 292,678 | A | 60,248 | M | 163,211 | M | - | U | - | U |
No improvements made | 495,345 | A | 486,842 | A | 953,760 | A | 399,641 | A | 783,871 | A | 365,676 | A | 620,290 | A | 219,213 | A | - | U |
Valid Skip Footnote 2 | 717,688 | A | 1,015,338 | A | 1,832,639 | A | 890,966 | A | 1,062,299 | A | 372,786 | A | 1,008,195 | A | 887,863 | A | 301,863 | M |
Not stated | 160,349 | M | 100,159 | M | 241,276 | A | 126,217 | M | 170,545 | A | 80,015 | M | 133,559 | M | - | U | - | U |
Households installed a programmable thermostat | ||||||||||||||||||
5 years or less (January 1st, 2015 - December 31st, 2019) | 173,073 | M | 206,240 | A | 493,778 | A | 155,716 | M | 292,675 | A | 148,493 | M | 189,819 | A | 96,508 | M | - | U |
No improvements made | 454,426 | A | 428,499 | A | 895,882 | A | 393,619 | A | 770,618 | A | 284,699 | A | 601,007 | A | 150,541 | M | - | U |
Valid Skip Footnote 2 | 717,688 | A | 1,015,338 | A | 1,832,639 | A | 890,966 | A | 1,062,299 | A | 372,786 | A | 1,008,195 | A | 887,863 | A | 301,863 | M |
Not stated | 149,863 | M | 107,435 | M | 214,569 | A | 116,271 | M | 183,799 | A | 72,747 | M | 126,233 | M | - | U | - | U |
Households installed solar photovoltaic panels | ||||||||||||||||||
5 years or less (January 1st, 2015 - December 31st, 2019) | - | U | - | U | - | U | - | U | - | U | - | - | - | U | - | U | - | - |
No improvements made | 594,267 | A | 619,439 | A | 1,316,907 | A | 526,279 | A | 1,027,257 | A | 412,924 | A | 762,732 | A | 243,053 | A | - | U |
Valid Skip Footnote 2 | 717,688 | A | 1,015,338 | A | 1,832,639 | A | 890,966 | A | 1,062,299 | A | 372,786 | A | 1,008,195 | A | 887,863 | A | 301,863 | M |
Not stated | 181,777 | M | 118,792 | M | 281,824 | A | 135,691 | M | 206,762 | A | 93,014 | M | 136,235 | M | - | U | - | U |
Households installed solar heating system | ||||||||||||||||||
5 years or less (January 1st, 2015 - December 31st, 2019) | - | U | - | U | - | - | - | - | - | U | - | - | - | - | - | - | - | - |
No improvements made | 593,742 | A | 623,383 | A | 1,322,405 | A | 529,915 | A | 1,028,879 | A | 412,924 | A | 774,109 | A | 245,064 | A | - | U |
Valid Skip Footnote 2 | 717,688 | A | 1,015,338 | A | 1,832,639 | A | 890,966 | A | 1,062,299 | A | 372,786 | A | 1,008,195 | A | 887,863 | A | 301,863 | M |
Not stated | 181,777 | M | 113,259 | M | 281,824 | A | 135,691 | M | 209,239 | A | 93,014 | M | 142,951 | M | - | U | - | U |
Households installed a drain-water heat recovery unit | ||||||||||||||||||
5 years or less (January 1st, 2015 - December 31st, 2019) | - | - | - | U | - | U | - | U | - | U | - | U | - | - | - | - | - | - |
No improvements made | 595,585 | A | 623,383 | A | 1,322,284 | A | 527,670 | A | 1,030,128 | A | 411,895 | A | 774,109 | A | 245,064 | A | - | U |
Valid Skip Footnote 2 | 717,688 | A | 1,015,338 | A | 1,832,639 | A | 890,966 | A | 1,062,299 | A | 372,786 | A | 1,008,195 | A | 887,863 | A | 301,863 | M |
Not stated | 181,777 | M | 113,259 | M | 281,382 | A | 135,691 | M | 209,239 | A | 93,014 | M | 142,951 | M | - | U | - | U |
Households made improvement(s) to the ventilation or central air conditioning equipment | ||||||||||||||||||
5 years or less (January 1st, 2015 - December 31st, 2019) | - | U | 124,067 | A | 290,593 | A | 103,009 | A | 268,580 | A | 106,336 | M | 209,934 | M | 65,688 | M | - | U |
No improvements made | 504,633 | A | 503,900 | A | 1,080,984 | A | 440,118 | A | 799,211 | A | 315,100 | A | 583,990 | A | 179,375 | A | - | U |
Valid Skip Footnote 2 | 717,688 | A | 1,015,338 | A | 1,832,639 | A | 890,966 | A | 1,062,299 | A | 372,786 | A | 1,008,195 | A | 887,863 | A | 301,863 | M |
Not stated | 162,196 | M | 114,207 | M | 232,653 | A | 122,479 | M | 179,302 | A | 84,502 | M | 123,136 | M | - | U | - | U |
Households made improvement(s) to the foundation | ||||||||||||||||||
5 years or less (January 1st, 2015 - December 31st, 2019) | 39,489 | M | - | U | - | U | - | U | - | U | - | U | - | U | - | U | - | - |
No improvements made | 564,528 | A | 593,024 | A | 1,315,247 | A | 520,819 | A | 1,017,386 | A | 409,811 | A | 755,940 | A | 235,258 | A | - | U |
Valid Skip Footnote 2 | 717,688 | A | 1,015,338 | A | 1,832,639 | A | 890,966 | A | 1,062,299 | A | 372,786 | A | 1,008,195 | A | 887,863 | A | 301,863 | M |
Not stated | 173,344 | M | 116,402 | M | 270,638 | A | 135,691 | M | 207,729 | A | 91,122 | M | 142,951 | M | - | U | - | U |
Households made other improvement(s) | ||||||||||||||||||
5 years or less (January 1st, 2015 - December 31st, 2019) | 106,217 | M | 116,223 | M | 210,684 | A | 93,906 | M | 167,084 | A | 86,381 | M | 179,027 | M | 48,266 | M | - | U |
No improvements made | 492,223 | A | 514,375 | A | 1,122,255 | A | 441,743 | A | 877,946 | A | 326,543 | A | 608,917 | A | 200,642 | A | - | U |
Valid Skip Footnote 2 | 717,688 | A | 1,015,338 | A | 1,832,639 | A | 890,966 | A | 1,062,299 | A | 372,786 | A | 1,008,195 | A | 887,863 | A | 301,863 | M |
Not stated | 178,921 | M | 111,577 | M | 271,289 | A | 129,958 | M | 202,063 | A | 93,014 | M | 129,115 | M | - | U | - | U |
Number of improvements made since January 1st, 2015 | ||||||||||||||||||
No improvements | 366,473 | A | 318,648 | A | 604,021 | A | 244,353 | A | 421,074 | A | 165,542 | A | 494,943 | A | 445,661 | A | - | U |
1 to 3 | 401,329 | A | 398,658 | A | 947,833 | A | 376,335 | A | 678,979 | A | 287,044 | M | 618,625 | A | 184,347 | A | - | U |
4 to 6 | 109,164 | M | 105,194 | M | 238,490 | A | 88,256 | M | 222,730 | A | 86,786 | M | 105,032 | M | - | U | - | U |
7 or more | - | U | - | U | 48,803 | M | - | U | - | U | - | - | - | U | - | U | - | - |
Valid Skip Footnote 1 | 351,215 | A | 696,690 | A | 1,228,618 | A | 646,612 | A | 641,225 | A | 207,244 | M | 513,253 | A | 442,201 | A | 289,468 | M |
Yes improvement but ’Not stated’ number of improvements | 206,697 | A | 213,280 | A | 369,103 | A | 181,302 | A | 314,594 | A | 132,108 | M | 174,964 | M | 107,258 | M | - | U |
Main reason household did not make any improvements | ||||||||||||||||||
No improvements are currently necessary | 169,601 | M | 174,869 | A | 321,370 | A | 132,349 | A | 262,801 | A | 129,747 | A | 334,752 | A | 253,728 | A | - | U |
Planning to make improvements in the future | - | U | - | U | 77,445 | M | - | U | 48,939 | M | - | U | 57,034 | M | - | U | - | U |
Not aware of government financial aid or assistance | - | U | - | U | - | U | - | U | - | U | - | - | - | U | - | U | - | U |
Planning to sell | - | U | - | U | - | U | - | - | - | U | - | - | - | U | - | U | - | - |
Dwelling was recently purchased or built | - | U | - | U | - | U | - | - | - | U | - | U | - | U | 123,112 | A | - | - |
Improvements are too costly | 65,162 | M | 54,860 | M | 95,898 | M | - | U | 52,491 | M | - | U | 57,888 | M | - | U | - | U |
Do not have time | - | U | - | U | - | U | - | U | - | U | - | - | - | U | - | - | - | - |
No government financial aid or assistance | - | U | - | U | - | U | - | U | - | - | - | U | - | U | - | - | - | - |
Other | - | U | - | U | - | U | - | U | - | U | - | U | - | U | - | U | - | - |
Valid Skip Footnote 3 | 1,114,002 | A | 1,432,176 | A | 2,783,348 | A | 1,299,964 | A | 1,868,519 | A | 697,927 | A | 1,430,313 | A | 754,206 | A | 367,134 | A |
Don’t know/Not stated | - | U | - | U | 78,486 | M | - | U | - | U | - | U | - | U | - | U | - | U |
Legend:
The letter beside each estimate classifies its quality as follows: A–Acceptable, M–Use with caution, U–Too unreliable to be published.
Notes:Due to rounding, the numbers may not add up and may differ slightly among tables.
Source:2019 Survey of Household Energy Use