Ohio: 176 cities covered
Across 176 Ohio cities with a positive case for switching, the average incremental payback is about 701.9 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.
- Columbus — 933,263 people, 4266 HDD
- Cleveland — 365,379 people, 4177 HDD
- Cincinnati — 314,915 people, 3923 HDD
- Toledo — 265,638 people, 5059 HDD
- Akron — 189,664 people, 4787 HDD
- Dayton — 136,346 people, 4252 HDD
- Parma — 79,350 people, 4616 HDD
- Canton — 69,211 people, 5050 HDD
- Lorain — 65,751 people, 4805 HDD
- Hamilton — 63,953 people, 3982 HDD
- Youngstown — 59,123 people, 5003 HDD
- Springfield — 58,138 people, 4651 HDD
- Kettering — 57,028 people, 4083 HDD
- Elyria — 53,604 people, 4805 HDD
- Middletown — 52,291 people, 4189 HDD
- Newark — 51,424 people, 3013 HDD
- Cuyahoga Falls — 50,979 people, 4787 HDD
- Lakewood — 49,517 people, 4616 HDD
- Dublin — 49,456 people, 4107 HDD
- Euclid — 48,421 people, 4946 HDD
- Beavercreek — 48,012 people, 4172 HDD
- Mansfield — 47,593 people, 4955 HDD
- Mentor — 47,113 people, 4809 HDD
- Delaware — 46,521 people, 5002 HDD
- Strongsville — 45,768 people, 4616 HDD
- Fairfield — 45,094 people, 3982 HDD
- Cleveland Heights — 44,064 people, 4550 HDD
- Grove City — 44,019 people, 4552 HDD
- Huber Heights — 43,590 people, 4172 HDD
- Reynoldsburg — 42,897 people, 4266 HDD
- Lancaster — 41,671 people, 4461 HDD
- Findlay — 40,343 people, 4539 HDD
- Hilliard — 38,832 people, 4107 HDD
- Warren — 38,683 people, 5003 HDD
- Westerville — 38,612 people, 4107 HDD
- North Ridgeville — 37,504 people, 4805 HDD
- Upper Arlington — 36,140 people, 4107 HDD
- Mason — 36,046 people, 3982 HDD
- Marion — 35,576 people, 4647 HDD
- Gahanna — 35,544 people, 4266 HDD
- Brunswick — 35,166 people, 4616 HDD
- Fairborn — 35,105 people, 4172 HDD
- Lima — 34,690 people, 4649 HDD
- Westlake — 34,232 people, 4616 HDD
- Stow — 34,101 people, 4787 HDD
- Massillon — 32,750 people, 5050 HDD
- North Olmsted — 31,690 people, 4616 HDD
- North Royalton — 30,894 people, 4616 HDD
- Bowling Green — 30,463 people, 4346 HDD
- Marysville — 29,276 people, 4934 HDD
- Garfield Heights — 29,014 people, 4550 HDD
- Shaker Heights — 28,689 people, 4550 HDD
- Kent — 27,720 people, 5312 HDD
- Green — 27,476 people, 5050 HDD
- Troy — 27,122 people, 4252 HDD
- Wooster — 26,982 people, 4952 HDD
- Avon Lake — 26,342 people, 4616 HDD
- Centerville — 26,311 people, 4083 HDD
- Xenia — 26,067 people, 4172 HDD
- Pickerington — 25,814 people, 4266 HDD
- Medina — 25,757 people, 4871 HDD
- Avon — 25,573 people, 4616 HDD
- Perrysburg — 25,313 people, 4346 HDD
- Zanesville — 24,916 people, 4289 HDD
- Athens — 24,824 people, 4283 HDD
- Wadsworth — 24,753 people, 4871 HDD
- Barberton — 24,624 people, 4787 HDD
- Riverside — 24,472 people, 4172 HDD
- Willoughby — 24,208 people, 4809 HDD
- Sandusky — 24,174 people, 3839 HDD
- Solon — 23,875 people, 4946 HDD
- Maple Heights — 23,081 people, 4550 HDD
- Hudson — 23,073 people, 5312 HDD
- Trotwood — 23,073 people, 4252 HDD
- Oxford — 22,585 people, 3982 HDD
- Lebanon — 21,995 people, 4083 HDD
- Chillicothe — 21,769 people, 4305 HDD
- Alliance — 21,523 people, 5050 HDD
- Rocky River — 21,468 people, 4616 HDD
- South Euclid — 21,363 people, 4946 HDD
- Piqua — 20,940 people, 4586 HDD
- Painesville — 20,660 people, 4579 HDD
- Parma Heights — 20,524 people, 4616 HDD
- Sidney — 20,392 people, 3895 HDD
- Miamisburg — 20,253 people, 4083 HDD
- Forest Park — 20,033 people, 3982 HDD
- Whitehall — 19,940 people, 4266 HDD
- Mayfield Heights — 19,886 people, 4946 HDD
- Broadview Heights — 19,792 people, 4616 HDD
- Oregon — 19,726 people, 4619 HDD
- Springboro — 19,646 people, 4083 HDD
- Twinsburg — 19,504 people, 5312 HDD
- Norwood — 19,455 people, 3923 HDD
- Sylvania — 19,102 people, 5059 HDD
- Ashland — 18,770 people, 4955 HDD
- Pataskala — 18,493 people, 4266 HDD
- Tallmadge — 18,412 people, 4787 HDD
- Niles — 18,238 people, 5003 HDD
- Brook Park — 18,142 people, 4616 HDD
- Steubenville — 18,029 people, 4279 HDD
- Berea — 17,998 people, 4616 HDD
- Aurora — 17,985 people, 5312 HDD
- Streetsboro — 17,877 people, 5312 HDD
- Ashtabula — 17,775 people, 4754 HDD
- Tiffin — 17,729 people, 4539 HDD
- North Canton — 17,677 people, 5050 HDD
- Portsmouth — 17,489 people, 3696 HDD
- Eastlake — 17,423 people, 4809 HDD
- New Philadelphia — 17,378 people, 4623 HDD
- Mount Vernon — 17,329 people, 4580 HDD
- Defiance — 17,180 people, 4930 HDD
- Norwalk — 17,172 people, 4471 HDD
- Fairview Park — 16,860 people, 4616 HDD
- Monroe — 15,950 people, 4189 HDD
- Bay Village — 15,903 people, 4616 HDD
- Fremont — 15,814 people, 3839 HDD
- Middleburg Heights — 15,672 people, 4616 HDD
- Vandalia — 15,013 people, 4252 HDD
- Worthington — 14,649 people, 4107 HDD
- Powell — 14,613 people, 4107 HDD
- Washington Court House — 14,446 people, 4182 HDD
- Circleville — 14,433 people, 4305 HDD
- Willowick — 14,159 people, 4946 HDD
- Trenton — 14,131 people, 4189 HDD
- Bellefontaine — 14,100 people, 3895 HDD
- Sharonville — 14,040 people, 3982 HDD
- Brecksville — 13,951 people, 4616 HDD
- New Franklin — 13,859 people, 5050 HDD
- Beachwood — 13,820 people, 4946 HDD
- Lyndhurst — 13,700 people, 4946 HDD
- Maumee — 13,625 people, 4796 HDD
- Blue Ash — 13,616 people, 3923 HDD
- Harrison — 13,526 people, 3982 HDD
- Warrensville Heights — 13,450 people, 4550 HDD
- East Cleveland — 13,402 people, 4550 HDD
- Clayton — 13,296 people, 4252 HDD
- Englewood — 13,282 people, 4252 HDD
- Loveland — 13,277 people, 3900 HDD
- University Heights — 13,265 people, 4550 HDD
- Fostoria — 13,063 people, 4539 HDD
- Amherst — 13,048 people, 4805 HDD
- Marietta — 13,039 people, 4129 HDD
- Dover — 12,946 people, 4623 HDD
- West Carrollton — 12,911 people, 4083 HDD
- Bedford — 12,834 people, 4550 HDD
- Bexley — 12,793 people, 4266 HDD
- Greenville — 12,701 people, 4586 HDD
- Wickliffe — 12,659 people, 4946 HDD
- Wilmington — 12,639 people, 4182 HDD
- Conneaut — 12,357 people, 4754 HDD
- Macedonia — 12,139 people, 5312 HDD
- Franklin — 11,758 people, 4083 HDD
- Salem — 11,685 people, 4991 HDD
- New Albany — 11,604 people, 4266 HDD
- Bucyrus — 11,567 people, 4647 HDD
- Seven Hills — 11,560 people, 4616 HDD
- Norton — 11,423 people, 4787 HDD
- Ravenna — 11,236 people, 5312 HDD
- Urbana — 11,211 people, 3895 HDD
- Springdale — 11,183 people, 3982 HDD
- Van Wert — 11,123 people, 4649 HDD
- Coshocton — 11,114 people, 4289 HDD
- Brooklyn — 11,072 people, 4616 HDD
- Montgomery — 10,952 people, 3923 HDD
- Celina — 10,945 people, 4586 HDD
- Heath — 10,822 people, 3013 HDD
- Bedford Heights — 10,791 people, 4550 HDD
- London — 10,743 people, 4552 HDD
- Vermilion — 10,733 people, 4805 HDD
- Tipp City — 10,596 people, 4252 HDD
- Richmond Heights — 10,552 people, 4946 HDD
- Reading — 10,482 people, 3923 HDD
- Galion — 10,304 people, 4955 HDD
- Ironton — 10,147 people, 3696 HDD
- Canal Winchester — 10,060 people, 4305 HDD
- Cambridge — 10,036 people, 4289 HDD