Carrier Furnace Error Codes: What the Blinking Light Means
Carrier furnace error codes from the maker's own troubleshooting guides: how to count the flashes safely, what each code means, and when to call a tech.
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Heating & Cooling in Minneapolis, MN
Central Minnesota Heating and Cooling repairs and replaces furnaces, ACs, heat pumps and boilers in Minneapolis (Hennepin County), inside our 50-mile service area.
HVAC service in Minneapolis, MN
Much of Minneapolis was built before 1940, from bungalows in Longfellow and Nokomis to four-squares and duplexes around the lakes and in Northeast, so old venting, converted gravity ducts and boilers are everyday work here. The same price list applies in all 137 towns we serve.
- County
- Hennepin County
- ZIP codes
- 55401, 55402, 55403, 55404, 55405, 55406, 55407, 55408, 55409, 55410, 55411, 55412, 55413, 55414, 55415, 55416, 55417, 55418, 55419, 55430, 55454, 55455
- Natural gas
- CenterPoint Energy
- Electric
- Xcel Energy
Updated October 21, 2026 · By Eric Brown, owner, Central Minnesota Heating and Cooling
What HVAC work do we do most in Minneapolis?
- High-efficiency furnaces fitted to converted gravity duct systems
- Boiler and radiator repair and replacement
- Chimney liners and water-heater venting after a furnace moves to PVC
- Ductless heads for story-and-a-half upstairs rooms
Around town: Chain of Lakes · Minnehaha Falls · Mississippi River · Lake Street · Stone Arch Bridge. Neighborhoods: Linden Hills · Longfellow · Nokomis · Northeast · Powderhorn · Uptown
Book in MinneapolisWhat are Minneapolis homes like to heat and cool?
Minneapolis houses fall into rough bands by age. The oldest blocks, in Northeast and close to downtown and the river, include late-1800s frame houses and worker cottages, some still on boilers. The 1910s and 1920s filled south Minneapolis and the lake neighborhoods with bungalows, foursquares and up-and-down duplexes, and a duplex often means two furnaces, or one boiler serving both floors, in a single basement. Farther out, near Lake Nokomis and in the far north end, building ran into the 1940s and 50s, with story-and-a-halfs and small ramblers that had forced air from the start.
Each band brings its own work. The oldest houses raise questions about asbestos wrap, chimney condition and radiator piping. The 1920s stock brings converted gravity ducts and returns in odd places. The postwar houses bring tight basements and ductwork that never reached the upper half-story. Knowing the band tells us what to look at first.
What goes wrong with heating in Minneapolis in winter?
Big old houses lose heat fast. Many pre-1940 Minneapolis houses were built without wall insulation, and some still have none, so on a -15°F night the furnace or boiler runs almost nonstop and any weak part shows up: an ignitor near the end of its life, a noisy circulator pump, a flue that won't draft. Unlined masonry chimneys suffer too, because cool flue gas condenses inside them and eats at the mortar. Enclosed front porches with a radiator or a duct are usually where pipes and registers freeze first.
What goes wrong with cooling in Minneapolis in summer?
Cooling is where older Minneapolis houses show their age. Boiler-heated homes have no ductwork at all, so the choices are window units, ductless heads, or a small-duct high-velocity system run through closets. Upper units in duplexes often share that problem. Houses with converted gravity ducts can take central air, but the big ducts move cool air slowly and the outlets often sit low, so the upstairs lags. On narrow city lots the condenser ends up between houses, where it needs clear space on each side to breathe.
Which utilities and rebates apply in Minneapolis?
In Minneapolis, CenterPoint Energy handles gas-side rebates for high-efficiency furnaces, boilers and thermostats, and it lets you pick your own heating dealer, provided the application is filed in the calendar year of the install. Heat pump, AC and ductless rebates come from Xcel Energy, and some of those need an Xcel-registered contractor, so ask before you sign. The City of Minneapolis also runs Green Cost Share rebates for owners of one- to four-unit homes through the Center for Energy and Environment; check its rules before work begins.
Rebate programs change every year; check the utility's current terms before you buy. Our guides: Xcel and CenterPoint rebates, heat pump rebates, what happened to the federal credits.
Most-requested in Minneapolis
Furnace repair in Minneapolis Low, crowded basements are the norm here, and laundry lint near the furnace clogs the filter and burners. Furnace replacement in Minneapolis Furnace replacement in a Minneapolis house runs $4,500–$9,500 installed, and in pre-1940 houses the venting drives much of the job. AC repair in Minneapolis Many city systems are add-on coils on old furnaces, with the condenser squeezed into a narrow side yard. AC replacement in Minneapolis Central AC replacement in Minneapolis runs $5,200–$9,800 installed, with a matched coil and condenser sized by Manual J. Heat pumps in Minneapolis We install cold-climate and dual-fuel heat pumps across Minneapolis for $7,500–$14,500, with a written quote after a Manual J load calculation. Mini-splits in Minneapolis A ductless mini-split in Minneapolis runs $4,200–$12,500 installed. Boiler service in Minneapolis We repair and replace these boilers all over the city, from the lakes to Northeast. Tune-ups in Minneapolis A furnace or AC tune-up in Minneapolis is $129 with us, and both on one visit are $219, the same as every town we serve. What drives HVAC prices in Minneapolis In the city's 1920s houses, ductwork from an old gravity conversion often needs more return capacity, and that moves the quote.
More HVAC services we offer
Minneapolis HVAC questions
Who repairs furnaces and air conditioners in Minneapolis, MN?
Central Minnesota Heating and Cooling, owned by Eric Brown and in business since 2009, serves Minneapolis and nearby towns in Hennepin County, inside our 50-mile service area. We're open 7 days, 7am–9pm, and no-heat calls get priority. Call 612-429-3465.
How much does an HVAC service call cost in Minneapolis?
An HVAC service call in Minneapolis is a flat $79 trip charge, waived when you approve the repair. You get a written price before any work. See HVAC cost in Minneapolis for installed prices.
Can the old gravity-furnace ducts in my 1920s Minneapolis house work with a new furnace?
Often, yes. Converted gravity systems have large round ducts that move plenty of air at low speed. Two things need checking. The return side was designed for heat that rose on its own, so it may be undersized or oddly placed for a modern blower. And white wrap or tape on ducts in a house this age can contain asbestos, so have it tested before anyone cuts into it.
Does replacing a furnace or AC in Minneapolis need a permit?
Yes. A furnace, boiler, air conditioner or heat pump replacement in Minneapolis normally needs a mechanical permit from the city and an inspection after the work. The inspector looks at venting, the gas connection, combustion air and clearances. In older Minneapolis basements the venting is where most problems show up, so the water heater's venting should be settled in the quote, before install day.
Our Minneapolis house is in a historic district. Does that limit where a new condenser or PVC vent can go?
Exterior changes in a Minneapolis historic district may need review by the city's Heritage Preservation Commission, so ask the city whether your address is designated before work starts. Rear and side walls, out of view from the street, are the best places to propose a condenser or a PVC furnace vent. The mechanical permit comes from the city either way.
Is a heat pump realistic in a drafty 1920s Minneapolis house?
A heat pump can work in a drafty 1920s Minneapolis house, but work on the house first. A cold-climate heat pump keeps producing heat below zero, with less output as it gets colder, so a leaky house with uninsulated walls may need more heat pump than the ductwork can carry. Air sealing and insulation shrink that load, and Xcel pays a bonus when insulation comes before a heat pump. We usually keep the gas furnace as backup in a dual-fuel setup.
Also serving near Minneapolis
- St. Anthony, MN 4 mi
- Columbia Heights, MN 4 mi
- Falcon Heights, MN 4 mi
- Golden Valley, MN 4 mi
- St. Louis Park, MN 5 mi
- Robbinsdale, MN 5 mi
- Roseville, MN 6 mi
- Crystal, MN 6 mi
Guides for Minneapolis homeowners
Goodman Furnace Error Codes and Blinking Lights
Goodman and Amana furnace error codes from Goodman's own service manuals: how to read the display safely, what E0, E1, E2 and others mean, and when to call.
Read the guideLennox Furnace Error Codes: Blinking Lights and Alerts
Lennox furnaces report faults through DS1 and DS2 blinking lights and S30 or iComfort alerts. Learn what they mean and which checks are safe before you call.
Read the guide- Trane and American Standard Furnace Error CodesHeating
- How Long Does a Furnace Replacement Take?Heating
- Orphaned Water Heater: Why a New Furnace Needs a LinerHeating
Brands we service in Minneapolis: Carrier · Trane · Lennox · Goodman · Rheem · Mitsubishi Electric · Daikin · American Standard · Navien · Weil-McLain · and every other major brand
Contact Us
Heat out in Minneapolis? Call or send a request.