Montana: 8 cities covered
Montana's cities mostly do not clear a positive payback against a like-for-like gas furnace replacement, which is itself the honest local answer.
- Billings — 121,483 people, 6165 HDD
- Missoula — 78,204 people, 6930 HDD
- Great Falls — 60,013 people, 7144 HDD
- Bozeman — 57,894 people, 7555 HDD
- Butte-Silver Bow — 35,480 people, 8472 HDD
- Helena — 34,729 people, 6688 HDD
- Kalispell — 31,296 people, 7377 HDD
- Belgrade — 12,741 people, 7555 HDD