Cosgriff Climate Control
- Website checked
NorthStar Heating and Cooling
NorthStar Heating and Cooling installs and repairs furnaces, heat pumps, boilers and air conditioning in Duluth and Superior, serving the Twin Ports area of Minnesota and Wisconsin.
What they do
NorthStar Heating and Cooling installs and repairs furnaces, heat pumps, boilers and air conditioning, and handles heating repair across Duluth and Superior. Ductless mini-splits are part of the work too, with Fujitsu and Amana among the brands it works with. It repairs furnaces of all makes, and Amana is its specialty. Free estimates are offered and financing is available. A limited lifetime warranty is offered. The company is open Monday to Friday and closed on weekends.
- Furnace repairs and installs
- Boiler service
- Heat pumps
- Ductless mini-splits
- Air conditioning
- Heating repairs
Listed under Heating and cooling emergencies
Where they work
What we checked
- Its own website lists this work: northstarservices.com/duluth-air-conditioning-services (opens in a new tab), northstarservices.com/boiler-installation-duluth-mn (opens in a new tab)
Checked 12 Nov 2026, from public sources.
Not yet verified. We haven’t contacted this business yet. Ask for a written quote before work starts.
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