What Does the Blinking Light on My Furnace Mean?
A blinking furnace light is a control board fault code. How to read it safely, what common codes mean, and when to call 612-429-3465 instead of resetting.
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Central Minnesota Heating and Cooling repairs and replaces furnaces, ACs, heat pumps and boilers in Newport (Washington County), about 15 miles from downtown Minneapolis.
Furnace and AC service in Newport starts at $129 for a tune-up, and a furnace replacement runs $4,500–$9,500 installed with a written quote. Old Town holds the 1850s townsite and the Red Rock camp meeting grounds by the Mississippi; postwar homes climb east onto the bluffs.
Updated October 27, 2026 · By Eric Brown, owner, Central Minnesota Heating and Cooling

Around town: Mississippi River · Wakota Bridge · Pioneer Memorial Park · Newport Transit Station · Bailey Road. Neighborhoods: Old Town · Wild Ridge
Book in NewportNewport's housing started small. When the 1940 census counted 306 houses in the village, two-thirds had no indoor running water and a third needed major repairs; any that survive have long since been updated with modern plumbing and heat. The population nearly doubled in the 1940s, from 872 to 1,672, and the city built its first sanitary sewers in 1963 and 1964, as the land east of Highway 61 filled with new houses.
The bluffs came later. East of the older neighborhoods the ground climbs steeply through woods, and the large Wild Ridge homes of the 1970s were built into that slope, which can mean walkout lower levels and long duct runs from a single furnace. Parts of the northeast were still waiting on city sewer and water when the 2040 plan was written. For a furnace or AC quote, the first question is which setting the house sits in: the river flats, the east side or the bluffs.
Old Town's cold-weather calls tend to involve an aging furnace in a cottage or bungalow basement whose flue is a masonry chimney older than the furnace by decades, and that chimney may need a liner. Up on the bluffs, long duct runs in the bigger 1970s homes leave far rooms and walkout lower levels chilly on subzero nights; a two-stage furnace or better return air helps more than a higher thermostat setting. Keep side-wall PVC vents on sloped lots clear of drifted snow.
Old Town sits low along the Mississippi under big shade trees. The shade helps, but July nights by the river stay humid, so a basement dehumidifier earns its place. Bungalow bedrooms under the roof run hottest, and a small ductless head often cools them better than a bigger central unit. On the bluffs, big houses with long duct runs can leave the rooms farthest from the furnace lagging behind, which zoning or a ductless head can fix.
Newport homes get gas and electricity from Xcel Energy. Xcel's current rebate list includes condensing gas furnaces, gas boilers, central air and heat pumps. Signing a connected smart thermostat up for AC Rewards earns a yearly reward, and Saver's Switch cycles the AC on peak days in exchange for bill savings. Some Xcel measures require an Xcel-registered contractor, and we don't claim that status, so check with Xcel before you buy.
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.
Central Minnesota Heating and Cooling, owned by Eric Brown and in business since 2009, serves Newport and nearby towns in Washington County, about 15 miles from downtown Minneapolis. We're open 7 days, 7am–9pm, and no-heat calls get priority. Call 612-429-3465.
An HVAC service call in Newport is a flat $79 trip charge, waived when you approve the repair. You get a written price before any work. Installed prices are on our pricing page.
A ductless head or two is usually the cleanest answer. Running new ducts up through a bungalow means opening plaster walls or boxing in closets, and the half-story rooms under the roof are the ones that need cooling most. One indoor head mounts high on the wall, its refrigerant lines pass through a hole about three inches across, and the same unit warms the upstairs on cool spring and fall days. The main floor stays on its existing system.
Usually the furnace is fine and the airflow is the problem. In a split-level the furnace often sits on the lowest level, with long duct runs up to the bedrooms and a return that doesn't reach the upper rooms. We check static pressure, balance the dampers, and look at whether an upstairs return or a duct fix is needed before talking about a bigger furnace.
Not always. Many big houses run well on one furnace with a zoning system, where motorized dampers in the ducts answer to separate thermostats for each area. That works when the ducts are sized for it. When the upper rooms are far from the furnace or the walkout level has its own heating and cooling needs, two systems can be simpler. A Manual J for each area and a static pressure test tell us which fits.
Yes, with balanced ventilation. An HRV or ERV pulls filtered outdoor air in and pushes stale air out at the same rate, swapping heat between the two airstreams, so the windows can stay closed against train and traffic noise. Paired with central air, it keeps a closed-up house from feeling stuffy through the summer.
A blinking furnace light is a control board fault code. How to read it safely, what common codes mean, and when to call 612-429-3465 instead of resetting.
Read the guideBang, squeal, scrape, rattle, hum, click or whistle: what each furnace noise means, whether it's safe to run, and when to call 612-429-3465.
Read the guideCentral AC brands for Minnesota's short, humid summers: SEER2 payback, humidity control, coil matching, the R-454B and R-32 switch, and installed cost.
Read the guideBrands we service in Newport: Carrier · Trane · Lennox · Goodman · Rheem · Mitsubishi Electric · Daikin · American Standard · Navien · Weil-McLain · and every other major brand
Heat out in Newport? Call or send a request.