5 mi S of Duluth (across the bridge) · Pop. 26,751
HVAC, Heating & Cooling in Superior, WI
Superior, Wisconsin is the southern half of the Twin Ports — and most of its housing stock is similar to Duluth's: older homes with hot-water heat, oil-fired boilers ripe for conversion, and 1960s ranches with original furnaces. We're fully licensed in Wisconsin and bonded for cross-border work.
Quick Answer
Does Design Heating serve Superior, WI?
Design Heating is fully licensed and bonded in Wisconsin and serves Superior, WI (5 mi S of Duluth across the Bong/Blatnik bridge) with high-efficiency boiler installs, fuel-oil-to-gas conversions, furnace and AC replacements, and panel radiator retrofits. Superior's older housing stock makes it one of our top areas for hydronic boiler upgrades. We pull all Wisconsin permits in-house and follow Wisconsin combustion-air code.
What's Different About Superior
Local Design Considerations
Wisconsin permitting and code is slightly different from Minnesota (especially for combustion-air calculations). We handle every permit ourselves.
- Design temperature
- -19 °F
- Avg. winter low
- -3 °F
- Climate zone
- IECC 7
- ZIP served
- 54880
Most Common Project
High-Efficiency Boilers in Superior
Superior's housing stock skews toward older hot-water heated homes — making high-efficiency boiler retrofits our most common project type here.
Learn about High-Efficiency Boilers →Superior Neighborhoods We Serve
Areas of Superior
Notable local landmarks: Barker's Island, Wisconsin Point, Fairlawn Mansion, Superior Bay.
Services Available
All Services Available in Superior
Free Estimates
Ready for an HVAC Quote in Superior?
Just across the Bong or Blatnik bridge from Duluth. We also serve South Range, Lake Nebagamon, and Solon Springs on a project basis. Owner-operated since 2016, MN Licensed #MB715020, CGD certified, IGSHPA accredited.