California: 376 cities covered
Across 376 California cities with a positive case for switching, the average incremental payback is about 22.2 years against a like-for-like gas furnace replacement — but that average hides real spread, which is why each city gets its own page rather than one statewide number.
- Los Angeles — 3,878,704 people, 1613 HDD
- San Diego — 1,404,452 people, 1529 HDD
- San Jose — 997,368 people, 1565 HDD
- San Francisco — 827,526 people, 3372 HDD
- Fresno — 550,105 people, 1958 HDD
- Sacramento — 535,798 people, 2370 HDD
- Long Beach — 450,901 people, 1041 HDD
- Oakland — 443,554 people, 2347 HDD
- Bakersfield — 417,468 people, 1909 HDD
- Anaheim — 344,561 people, 1830 HDD
- Stockton — 324,975 people, 2188 HDD
- Riverside — 323,757 people, 1610 HDD
- Irvine — 318,683 people, 1159 HDD
- Santa Ana — 316,184 people, 1159 HDD
- Chula Vista — 278,546 people, 1751 HDD
- Santa Clarita — 229,159 people, 865 HDD
- Fremont — 228,192 people, 2250 HDD
- San Bernardino — 224,775 people, 1387 HDD
- Modesto — 220,592 people, 2286 HDD
- Fontana — 218,455 people, 1601 HDD
- Moreno Valley — 213,919 people, 2272 HDD
- Oxnard — 200,616 people, 1928 HDD
- Huntington Beach — 193,151 people, 1514 HDD
- Glendale — 187,823 people, 1687 HDD
- Ontario — 185,285 people, 1601 HDD
- Elk Grove — 182,797 people, 2370 HDD
- Santa Rosa — 177,524 people, 2845 HDD
- Rancho Cucamonga — 176,675 people, 1601 HDD
- Garden Grove — 172,361 people, 1514 HDD
- Oceanside — 170,941 people, 1962 HDD
- Lancaster — 167,426 people, 2883 HDD
- Roseville — 163,304 people, 2314 HDD
- Palmdale — 162,536 people, 2641 HDD
- Corona — 161,540 people, 1830 HDD
- Salinas — 160,783 people, 2625 HDD
- Hayward — 158,440 people, 1922 HDD
- Sunnyvale — 156,792 people, 2250 HDD
- Escondido — 148,847 people, 3833 HDD
- Pomona — 147,966 people, 1219 HDD
- Visalia — 146,271 people, 2247 HDD
- Victorville — 140,721 people, 2861 HDD
- Fullerton — 140,054 people, 1315 HDD
- Torrance — 139,576 people, 1112 HDD
- Orange — 137,941 people, 1159 HDD
- Pasadena — 137,195 people, 686 HDD
- Santa Clara — 133,132 people, 1672 HDD
- Clovis — 127,993 people, 1958 HDD
- Simi Valley — 125,778 people, 1457 HDD
- Thousand Oaks — 124,229 people, 1730 HDD
- Concord — 124,016 people, 2162 HDD
- Vallejo — 123,475 people, 2229 HDD
- Fairfield — 122,646 people, 2372 HDD
- Berkeley — 121,749 people, 2902 HDD
- Antioch — 118,453 people, 1907 HDD
- Menifee — 117,041 people, 2170 HDD
- Richmond — 115,353 people, 2538 HDD
- Carlsbad — 113,575 people, 1823 HDD
- Murrieta — 112,539 people, 1933 HDD
- Temecula — 112,431 people, 1933 HDD
- Santa Maria — 111,346 people, 3120 HDD
- San Buenaventura (Ventura) — 109,831 people, 1928 HDD
- Downey — 109,368 people, 1041 HDD
- Costa Mesa — 109,131 people, 1159 HDD
- Jurupa Valley — 108,154 people, 1610 HDD
- West Covina — 106,920 people, 686 HDD
- Rialto — 104,918 people, 1387 HDD
- El Monte — 104,639 people, 686 HDD
- Vacaville — 103,994 people, 2288 HDD
- Burbank — 103,533 people, 1687 HDD
- El Cajon — 103,291 people, 1807 HDD
- San Mateo — 103,006 people, 2349 HDD
- Chico — 102,911 people, 2573 HDD
- Inglewood — 102,774 people, 1268 HDD
- Hesperia — 101,836 people, 2861 HDD
- Daly City — 101,418 people, 3372 HDD
- Tracy — 100,136 people, 2188 HDD
- Vista — 99,322 people, 1823 HDD
- Norwalk — 98,230 people, 1315 HDD
- San Marcos — 96,620 people, 3833 HDD
- Merced — 96,073 people, 2107 HDD
- Manteca — 94,292 people, 2188 HDD
- Indio — 94,275 people, 1049 HDD
- Chino — 94,010 people, 1768 HDD
- Redding — 93,502 people, 2301 HDD
- Hemet — 92,912 people, 2170 HDD
- Mission Viejo — 91,601 people, 1159 HDD
- Carson — 91,358 people, 1112 HDD
- Compton — 91,129 people, 1268 HDD
- South Gate — 90,805 people, 1268 HDD
- Santa Monica — 90,729 people, 1820 HDD
- Westminster — 89,537 people, 1514 HDD
- Folsom — 88,091 people, 2450 HDD
- Mountain View — 87,316 people, 2250 HDD
- Santa Barbara — 87,291 people, 2276 HDD
- Lake Forest — 87,159 people, 1159 HDD
- Citrus Heights — 86,909 people, 2314 HDD
- San Leandro — 86,571 people, 2347 HDD
- San Ramon — 85,924 people, 2498 HDD
- Whittier — 85,589 people, 1315 HDD
- Livermore — 84,867 people, 2498 HDD
- Rancho Cordova — 84,113 people, 2450 HDD
- Hawthorne — 83,633 people, 1268 HDD
- Perris — 83,032 people, 2272 HDD
- Redwood City — 82,982 people, 2270 HDD
- Newport Beach — 82,970 people, 1159 HDD
- Buena Park — 82,611 people, 1315 HDD
- Alhambra — 80,279 people, 686 HDD
- Milpitas — 79,746 people, 1672 HDD
- Upland — 79,684 people, 1518 HDD
- Tustin — 78,863 people, 1159 HDD
- Alameda — 78,795 people, 2347 HDD
- Lakewood — 78,494 people, 1041 HDD
- Chino Hills — 77,418 people, 1768 HDD
- Pittsburg — 77,131 people, 1907 HDD
- Napa — 76,921 people, 2823 HDD
- Bellflower — 75,716 people, 1041 HDD
- Pleasanton — 75,664 people, 2498 HDD
- Rocklin — 75,129 people, 2727 HDD
- Apple Valley — 75,029 people, 2861 HDD
- Redlands — 74,279 people, 1628 HDD
- Lake Elsinore — 73,595 people, 2272 HDD
- Turlock — 72,888 people, 2286 HDD
- Tulare — 72,601 people, 2247 HDD
- Walnut Creek — 70,817 people, 2162 HDD
- Eastvale — 70,751 people, 1768 HDD
- Dublin — 70,544 people, 2498 HDD
- Camarillo — 69,881 people, 1730 HDD
- Baldwin Park — 69,247 people, 686 HDD
- Yuba City — 69,148 people, 2183 HDD
- Madera — 69,094 people, 2176 HDD
- Lodi — 68,642 people, 2188 HDD
- Redondo Beach — 68,075 people, 1112 HDD
- Palo Alto — 67,658 people, 1880 HDD
- Davis — 67,125 people, 2445 HDD
- Yorba Linda — 66,489 people, 1830 HDD
- Brentwood — 66,286 people, 1907 HDD
- Union City — 66,196 people, 1922 HDD
- South San Francisco — 64,660 people, 2665 HDD
- Laguna Niguel — 64,185 people, 1159 HDD
- Lynwood — 63,596 people, 1268 HDD
- Porterville — 63,517 people, 2197 HDD
- Woodland — 62,983 people, 2068 HDD
- San Clemente — 62,627 people, 1159 HDD
- Santa Cruz — 62,581 people, 3215 HDD
- La Habra — 61,391 people, 1315 HDD
- Encinitas — 61,137 people, 3833 HDD
- La Mesa — 60,767 people, 1807 HDD
- Montebello — 60,617 people, 686 HDD
- Hanford — 60,594 people, 2130 HDD
- Gilroy — 60,390 people, 2513 HDD
- San Rafael — 59,961 people, 2538 HDD
- Beaumont — 59,502 people, 2170 HDD
- Petaluma — 59,393 people, 3702 HDD
- Pico Rivera — 59,363 people, 686 HDD
- Santee — 59,104 people, 1807 HDD
- Gardena — 58,921 people, 1268 HDD
- Cupertino — 58,710 people, 2250 HDD
- National City — 58,460 people, 1497 HDD
- Monterey Park — 57,996 people, 686 HDD
- Highland — 56,499 people, 1628 HDD
- Lincoln — 56,268 people, 2727 HDD
- Fountain Valley — 56,036 people, 1159 HDD
- West Sacramento — 55,991 people, 2370 HDD
- San Jacinto — 55,515 people, 2170 HDD
- Arcadia — 54,472 people, 686 HDD
- Yucaipa — 54,465 people, 1628 HDD
- Colton — 53,528 people, 1387 HDD
- Placentia — 53,395 people, 1315 HDD
- Delano — 53,198 people, 2197 HDD
- Palm Desert — 53,147 people, 569 HDD
- Cathedral City — 52,517 people, 569 HDD
- Novato — 52,311 people, 2568 HDD
- Diamond Bar — 52,292 people, 1219 HDD
- Huntington Park — 52,166 people, 1268 HDD
- Watsonville — 51,320 people, 3215 HDD
- Paramount — 51,169 people, 1041 HDD
- Aliso Viejo — 50,457 people, 1159 HDD
- Glendora — 50,101 people, 1219 HDD
- San Luis Obispo — 49,729 people, 1877 HDD
- Rosemead — 49,582 people, 686 HDD
- Poway — 49,435 people, 2618 HDD
- Cypress — 49,286 people, 1514 HDD
- Ceres — 49,253 people, 2286 HDD
- Covina — 49,245 people, 1219 HDD
- Los Banos — 48,684 people, 2551 HDD
- Azusa — 48,383 people, 1219 HDD
- Brea — 47,844 people, 1315 HDD
- Oakley — 47,158 people, 1907 HDD
- Cerritos — 46,851 people, 1315 HDD
- La Mirada — 46,367 people, 1315 HDD
- Rancho Santa Margarita — 46,353 people, 1159 HDD
- Newark — 46,254 people, 1880 HDD
- Morgan Hill — 45,952 people, 2513 HDD
- Palm Springs — 45,453 people, 569 HDD
- Coachella — 45,165 people, 1049 HDD
- Hollister — 45,033 people, 2815 HDD
- Rohnert Park — 44,894 people, 3702 HDD
- El Centro — 44,230 people, 944 HDD
- Lompoc — 43,594 people, 3118 HDD
- Danville — 43,410 people, 2498 HDD
- Campbell — 42,895 people, 1672 HDD
- San Bruno — 42,035 people, 2665 HDD
- Stanton — 41,188 people, 1514 HDD
- Lathrop — 40,860 people, 2188 HDD
- Rancho Palos Verdes — 40,064 people, 1112 HDD
- La Quinta — 39,907 people, 1049 HDD
- Culver City — 39,883 people, 1613 HDD
- Calexico — 38,744 people, 944 HDD
- Adelanto — 37,941 people, 2861 HDD
- San Gabriel — 37,926 people, 686 HDD
- Monrovia — 37,787 people, 686 HDD
- Wildomar — 37,736 people, 1933 HDD
- Montclair — 37,650 people, 1518 HDD
- Bell Gardens — 37,565 people, 1041 HDD
- Pacifica — 37,056 people, 2665 HDD
- Martinez — 37,006 people, 2161 HDD
- La Puente — 36,670 people, 686 HDD
- Claremont — 36,139 people, 1518 HDD
- Moorpark — 35,621 people, 1730 HDD
- San Juan Capistrano — 35,469 people, 1159 HDD
- Temple City — 34,989 people, 686 HDD
- West Hollywood — 34,371 people, 1613 HDD
- Pleasant Hill — 34,169 people, 2162 HDD
- Desert Hot Springs — 33,917 people, 569 HDD
- Manhattan Beach — 33,453 people, 1598 HDD
- San Dimas — 33,226 people, 1219 HDD
- Menlo Park — 33,040 people, 1880 HDD
- Los Gatos — 32,952 people, 1672 HDD
- Foster City — 32,657 people, 2349 HDD
- Goleta — 32,611 people, 2168 HDD
- Dana Point — 32,585 people, 1159 HDD
- Atwater — 32,248 people, 2107 HDD
- Bell — 31,930 people, 1268 HDD
- Banning — 31,929 people, 2170 HDD
- Santa Paula — 31,786 people, 1730 HDD
- El Paso de Robles (Paso Robles) — 31,568 people, 3011 HDD
- San Pablo — 31,562 people, 2538 HDD
- Seaside — 31,524 people, 3247 HDD
- Beverly Hills — 31,027 people, 1613 HDD
- Burlingame — 30,885 people, 2665 HDD
- Los Altos — 30,864 people, 2250 HDD
- Saratoga — 30,486 people, 1672 HDD
- Laguna Hills — 30,378 people, 1159 HDD
- La Verne — 30,192 people, 1219 HDD
- Lawndale — 30,160 people, 1268 HDD
- Atascadero — 29,743 people, 3011 HDD
- Suisun City — 29,614 people, 2372 HDD
- San Carlos — 29,403 people, 2349 HDD
- East Palo Alto — 29,296 people, 1880 HDD
- Monterey — 29,015 people, 3247 HDD
- Ridgecrest — 28,373 people, 2343 HDD
- Brawley — 28,188 people, 944 HDD
- Lemon Grove — 27,867 people, 1807 HDD
- Wasco — 27,409 people, 1909 HDD
- Walnut — 27,250 people, 1219 HDD
- Belmont — 27,132 people, 2349 HDD
- Lemoore — 27,057 people, 2230 HDD
- Sanger — 26,649 people, 1958 HDD
- Galt — 26,589 people, 2370 HDD
- Twentynine Palms — 26,563 people, 1633 HDD
- Hercules — 26,499 people, 2229 HDD
- Benicia — 26,477 people, 2161 HDD
- El Cerrito — 26,409 people, 2629 HDD
- Soledad — 26,345 people, 2625 HDD
- Reedley — 26,138 people, 1958 HDD
- Windsor — 25,846 people, 2845 HDD
- Dinuba — 25,833 people, 2247 HDD
- South Pasadena — 25,656 people, 686 HDD
- Riverbank — 25,625 people, 2286 HDD
- Imperial Beach — 25,568 people, 1788 HDD
- Patterson — 25,495 people, 2286 HDD
- Eureka — 25,412 people, 4443 HDD
- Norco — 25,400 people, 1830 HDD
- Lafayette — 25,371 people, 2162 HDD
- Loma Linda — 25,197 people, 1628 HDD
- Barstow — 24,897 people, 1999 HDD
- Selma — 24,505 people, 1958 HDD
- Seal Beach — 24,421 people, 1514 HDD
- Maywood — 23,838 people, 1268 HDD
- Duarte — 23,493 people, 686 HDD
- San Fernando — 23,488 people, 865 HDD
- Millbrae — 23,321 people, 2665 HDD
- Oakdale — 23,209 people, 2286 HDD
- Marina — 23,047 people, 5113 HDD
- Shafter — 22,754 people, 1909 HDD
- Corcoran — 22,627 people, 2130 HDD
- Laguna Beach — 22,564 people, 1159 HDD
- Calabasas — 22,256 people, 1457 HDD
- Imperial — 22,102 people, 944 HDD
- Yucca Valley — 21,858 people, 1633 HDD
- American Canyon — 21,742 people, 2823 HDD
- Cudahy — 21,694 people, 1268 HDD
- Port Hueneme — 21,325 people, 1928 HDD
- South Lake Tahoe — 21,225 people, 7361 HDD
- Greenfield — 21,042 people, 2625 HDD
- Dixon — 20,296 people, 2445 HDD
- Lomita — 19,841 people, 1112 HDD
- Oroville — 19,712 people, 2082 HDD
- Arvin — 19,661 people, 1909 HDD
- La Cañada Flintridge — 19,621 people, 1687 HDD
- Orinda — 19,573 people, 2430 HDD
- Albany — 19,439 people, 2629 HDD
- Agoura Hills — 19,429 people, 1457 HDD
- Chowchilla — 19,191 people, 2176 HDD
- South El Monte — 19,121 people, 686 HDD
- Arcata — 18,748 people, 4443 HDD
- Hermosa Beach — 18,687 people, 1598 HDD
- Santa Fe Springs — 18,683 people, 1315 HDD
- Pinole — 18,663 people, 2229 HDD
- Arroyo Grande — 18,249 people, 1877 HDD
- Coronado — 18,031 people, 1497 HDD
- Rancho Mirage — 18,001 people, 569 HDD
- Kerman — 17,497 people, 2176 HDD
- Blythe — 17,320 people, 1024 HDD
- Truckee — 17,240 people, 7399 HDD
- Fillmore — 17,216 people, 1730 HDD
- Laguna Woods — 17,058 people, 1159 HDD
- Coalinga — 16,722 people, 2230 HDD
- Moraga — 16,698 people, 2430 HDD
- Clearlake — 16,636 people, 2711 HDD
- El Segundo — 16,544 people, 1598 HDD
- Ripon — 16,252 people, 2188 HDD
- Ukiah — 16,067 people, 2711 HDD
- Artesia — 15,662 people, 1041 HDD
- La Palma — 15,092 people, 1315 HDD
- Pacific Grove — 14,851 people, 3247 HDD
- Livingston — 14,767 people, 2551 HDD
- Parlier — 14,429 people, 1958 HDD
- McFarland — 14,365 people, 1909 HDD
- Red Bluff — 14,286 people, 2395 HDD
- Avenal — 14,108 people, 2230 HDD
- Grass Valley — 14,085 people, 3378 HDD
- King City — 13,920 people, 2625 HDD
- Emeryville — 13,912 people, 2902 HDD
- Mill Valley — 13,904 people, 2538 HDD
- Auburn — 13,780 people, 2860 HDD
- Hawaiian Gardens — 13,457 people, 1514 HDD
- California City — 13,174 people, 2800 HDD
- Kingsburg — 13,128 people, 2130 HDD
- Grand Terrace — 12,979 people, 1387 HDD
- Carpinteria — 12,876 people, 2276 HDD
- Solana Beach — 12,868 people, 3833 HDD
- Larkspur — 12,807 people, 2538 HDD
- Marysville — 12,714 people, 2183 HDD
- Lindsay — 12,706 people, 2197 HDD
- Palos Verdes Estates — 12,668 people, 1112 HDD
- San Anselmo — 12,645 people, 2538 HDD
- Mendota — 12,623 people, 2176 HDD
- Grover Beach — 12,534 people, 2675 HDD
- Susanville — 12,359 people, 5685 HDD
- Newman — 12,292 people, 2551 HDD
- Fortuna — 12,114 people, 4790 HDD
- San Marino — 12,105 people, 686 HDD
- Commerce — 11,882 people, 686 HDD
- Los Alamitos — 11,846 people, 1514 HDD
- Scotts Valley — 11,828 people, 3215 HDD
- Half Moon Bay — 11,324 people, 3680 HDD
- Signal Hill — 11,279 people, 1041 HDD
- Healdsburg — 11,231 people, 2845 HDD
- Anderson — 11,171 people, 2301 HDD
- Hillsborough — 11,171 people, 2665 HDD
- Canyon Lake — 11,161 people, 2170 HDD
- Calimesa — 11,150 people, 2272 HDD
- Tehachapi — 11,114 people, 4232 HDD
- Clayton — 10,933 people, 1907 HDD
- Piedmont — 10,816 people, 2430 HDD
- Sierra Madre — 10,775 people, 686 HDD
- Placerville — 10,695 people, 3234 HDD
- Sonoma — 10,606 people, 3702 HDD
- Morro Bay — 10,591 people, 2738 HDD
- Farmersville — 10,501 people, 2247 HDD
- Malibu — 10,298 people, 1820 HDD
- Rio Vista — 10,248 people, 1907 HDD
- Shasta Lake — 10,244 people, 2301 HDD
- Exeter — 10,186 people, 2247 HDD
- Corte Madera — 10,006 people, 2538 HDD