1. Northland Comfort
5722 Miller Trunk Hwy, Duluth, MN 55811
Coordinate: 46.85285,-92.2825
Phone: (218) 461-0965
2. Comfort Systems
520 Garfield Ave, Duluth, MN 55802
Coordinate: 46.76342,-92.11194
Phone: (218) 730-4050
3. Harbor City Oil & Propane
3020 W Superior St, Duluth, MN 55806
Coordinate: 46.75736,-92.13633
Phone: (218) 624-3633