Virginia: 39 cities covered
Across 39 Virginia cities with a positive case for switching, the average incremental payback is about 15.3 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.
- Virginia Beach — 454,808 people, 2728 HDD
- Chesapeake — 254,997 people, 3251 HDD
- Richmond — 233,655 people, 3039 HDD
- Norfolk — 231,105 people, 2499 HDD
- Newport News — 183,056 people, 3160 HDD
- Alexandria — 159,102 people, 3197 HDD
- Hampton — 137,596 people, 2777 HDD
- Suffolk — 103,105 people, 2893 HDD
- Roanoke — 97,912 people, 3283 HDD
- Portsmouth — 96,482 people, 2541 HDD
- Lynchburg — 80,301 people, 3508 HDD
- Harrisonburg — 51,164 people, 4360 HDD
- Leesburg — 49,831 people, 3856 HDD
- Blacksburg — 45,452 people, 4078 HDD
- Charlottesville — 44,767 people, 3638 HDD
- Manassas — 43,616 people, 4017 HDD
- Danville — 41,993 people, 3302 HDD
- Petersburg — 34,058 people, 3525 HDD
- Fredericksburg — 29,992 people, 3556 HDD
- Winchester — 27,800 people, 4502 HDD
- Staunton — 26,361 people, 4360 HDD
- Fairfax — 26,340 people, 3678 HDD
- Salem — 25,908 people, 3283 HDD
- Herndon — 25,180 people, 3678 HDD
- Waynesboro — 23,498 people, 4360 HDD
- Hopewell — 22,970 people, 3525 HDD
- Christiansburg — 22,632 people, 4078 HDD
- Culpeper — 21,464 people, 3775 HDD
- Colonial Heights — 18,674 people, 3525 HDD
- Radford — 17,273 people, 4291 HDD
- Manassas Park — 16,611 people, 4017 HDD
- Vienna — 16,562 people, 3678 HDD
- Bristol — 16,316 people, 3621 HDD
- Williamsburg — 16,030 people, 3128 HDD
- Front Royal — 15,628 people, 4502 HDD
- Falls Church — 15,034 people, 3197 HDD
- Martinsville — 13,834 people, 3769 HDD
- Poquoson — 12,854 people, 2777 HDD
- Warrenton — 10,224 people, 3967 HDD