North Carolina: 91 cities covered
Across 91 North Carolina cities with a positive case for switching, the average incremental payback is about 14.2 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.
- Charlotte — 943,476 people, 2436 HDD
- Raleigh — 499,825 people, 2409 HDD
- Greensboro — 307,381 people, 3027 HDD
- Durham — 301,870 people, 2409 HDD
- Winston-Salem — 255,769 people, 2829 HDD
- Fayetteville — 209,496 people, 2191 HDD
- Cary — 182,659 people, 2409 HDD
- Wilmington — 125,284 people, 1774 HDD
- High Point — 118,601 people, 3027 HDD
- Concord — 112,395 people, 2683 HDD
- Greenville — 95,138 people, 2548 HDD
- Asheville — 94,992 people, 4057 HDD
- Gastonia — 85,535 people, 2728 HDD
- Apex — 75,977 people, 2409 HDD
- Jacksonville — 70,840 people, 2033 HDD
- Huntersville — 67,087 people, 2683 HDD
- Chapel Hill — 64,028 people, 3022 HDD
- Burlington — 61,365 people, 3063 HDD
- Kannapolis — 60,521 people, 2683 HDD
- Wake Forest — 56,764 people, 3108 HDD
- Rocky Mount — 54,541 people, 2633 HDD
- Mooresville — 52,884 people, 3015 HDD
- Holly Springs — 48,674 people, 3123 HDD
- Wilson — 48,579 people, 2633 HDD
- Fuquay-Varina — 46,317 people, 2607 HDD
- Hickory — 45,081 people, 2954 HDD
- Indian Trail — 43,867 people, 2531 HDD
- Monroe — 40,054 people, 2531 HDD
- Garner — 39,345 people, 2719 HDD
- Salisbury — 36,579 people, 3169 HDD
- Goldsboro — 34,629 people, 2001 HDD
- Leland — 34,451 people, 1904 HDD
- Cornelius — 34,366 people, 2683 HDD
- New Bern — 34,218 people, 2226 HDD
- Sanford — 32,971 people, 3123 HDD
- Morrisville — 32,628 people, 2409 HDD
- Matthews — 32,048 people, 2531 HDD
- Clayton — 31,732 people, 2719 HDD
- Statesville — 31,693 people, 3015 HDD
- Mint Hill — 28,825 people, 2531 HDD
- Kernersville — 28,760 people, 3027 HDD
- Asheboro — 27,928 people, 3014 HDD
- Thomasville — 27,605 people, 3038 HDD
- Waxhaw — 23,178 people, 2531 HDD
- Shelby — 22,778 people, 2989 HDD
- Clemmons — 22,471 people, 2829 HDD
- Knightdale — 21,829 people, 2409 HDD
- Carrboro — 21,079 people, 3022 HDD
- Mebane — 20,654 people, 3063 HDD
- Harrisburg — 20,335 people, 2683 HDD
- Boone — 20,080 people, 3896 HDD
- Lexington — 19,904 people, 3038 HDD
- Kinston — 19,519 people, 2450 HDD
- Graham — 19,311 people, 3063 HDD
- Elizabeth City — 19,028 people, 2566 HDD
- Lumberton — 18,882 people, 2162 HDD
- Mount Holly — 18,723 people, 2436 HDD
- Pinehurst — 18,502 people, 2613 HDD
- Lenoir — 18,280 people, 3191 HDD
- Hope Mills — 18,102 people, 2209 HDD
- Morganton — 17,825 people, 3191 HDD
- Stallings — 17,617 people, 2531 HDD
- Havelock — 17,407 people, 2181 HDD
- Albemarle — 17,344 people, 2982 HDD
- Southern Pines — 16,987 people, 2613 HDD
- Wendell — 16,845 people, 3108 HDD
- Davidson — 16,276 people, 2683 HDD
- Belmont — 16,044 people, 2436 HDD
- Hendersonville — 15,656 people, 3768 HDD
- Eden — 15,399 people, 3400 HDD
- Laurinburg — 15,130 people, 2460 HDD
- Henderson — 14,807 people, 3573 HDD
- Reidsville — 14,646 people, 3400 HDD
- Roanoke Rapids — 14,573 people, 3471 HDD
- Weddington — 14,391 people, 2531 HDD
- Lewisville — 14,203 people, 2829 HDD
- Newton — 13,571 people, 2954 HDD
- Smithfield — 12,806 people, 2719 HDD
- Lincolnton — 12,353 people, 3149 HDD
- Archdale — 12,147 people, 3027 HDD
- Rolesville — 11,854 people, 3108 HDD
- Kings Mountain — 11,797 people, 2728 HDD
- Pineville — 11,567 people, 2436 HDD
- Spring Lake — 11,530 people, 2410 HDD
- Summerfield — 11,333 people, 3027 HDD
- Elon — 11,282 people, 3063 HDD
- Tarboro — 10,954 people, 2795 HDD
- Winterville — 10,899 people, 2548 HDD
- Waynesville — 10,709 people, 4057 HDD
- Mount Airy — 10,583 people, 3458 HDD
- Zebulon — 10,505 people, 3108 HDD