Furnace Limit Switch Tripping? What to Check First
Why a furnace high-limit switch keeps tripping, a symptom-to-cause table, the checks to do yourself, the order a technician follows, and what the fix costs.
Read the guide
Central Minnesota Heating and Cooling repairs and replaces furnaces, ACs, heat pumps and boilers in Elko New Market (Scott County), about 29 miles from downtown Minneapolis.
Elko New Market is two small farm-country towns, railroad-platted Elko and German Catholic New Market, that merged in 2007, and about 70 percent of its housing dates from the 2000s.
Three electric providers (Xcel Energy, Minnesota Valley Electric Cooperative and Dakota Electric Association) and two gas utilities (Minnesota Energy Resources and Greater Minnesota Gas) split Elko New Market, so yours depends on your address; the city publishes a service-area map for each.
Updated October 21, 2026 · By Eric Brown, owner, Central Minnesota Heating and Cooling

Around town: Elko Speedway · Interstate 35 · Wagner Park · Pete's Hill Open Space · Historic Elko Park
Book in Elko New MarketNew Market grew up around a German Catholic church in the 1800s, and the railroad platted Elko in 1902; for most of the next century both stayed small. Elko Speedway opened in 1964, Interstate 35 arrived in the late 1960s, and the railroad left in 1977. Houses from those decades sit near the two old downtowns, where some furnaces still vent into a chimney. Then an early-1980s moratorium, caused by a shortage of sewer capacity, stopped nearly all building for about five years, until the towns built a shared sewer in 1987.
Building picked up again in the late 1990s, and fast. Between 1997 and 2003 New Market's developed area went from 320 acres to about 790, and by 2009 more than a thousand new housing units stood across both towns, which merged into one city in 2007. Those houses are tighter than the old ones, with condensing furnaces and PVC vents, and their equipment went in within a few years of each other, so whole streets reach replacement age together.
Where Elko New Market's subdivisions meet open fields, the wind has a long run at the houses, and side-wall PVC vents on the drift side can vanish under snow overnight; a buried intake or exhaust locks the furnace out. Heat pump owners on MVEC's Energy Wise program have another reason to keep the gas furnace tuned, because during peak demand the co-op switches heating to that backup. Near the old downtowns, a chimney-vented furnace deserves a draft check each fall.
Summer problems in Elko New Market mostly trace back to the building boom. Air conditioners from the 2000s are now 17 to 26 years old; check the nameplate, because a pre-2010 unit might hold R-22, and leaks on those get expensive. Builders often sized cooling by square footage, and an oversized unit that cools fast and shuts off leaves the air sticky. If your AC is enrolled in a cycling program, such as Xcel's Saver's Switch or MVEC's Energy Wise, short off periods on peak afternoons are normal.
Rebates in Elko New Market depend on which of five utilities serve your address. Minnesota Energy Resources gas customers can get heating system rebates on high-efficiency furnaces, boilers, HRVs and thermostats in existing homes; Greater Minnesota Gas has its own furnace, boiler and thermostat rebates. On the electric side, MVEC ties heat pump and AC rebates to its Energy Wise off-peak programs, Dakota Electric offers Energy Wise Rebates, and Xcel pays heat pump rebates through its Trade Partner Network.
Rebate programs change every year; check the utility's current terms before you buy. Our guides: heat pump rebates, what happened to the federal credits.
Central Minnesota Heating and Cooling, owned by Eric Brown and in business since 2009, serves Elko New Market and nearby towns in Scott County, about 29 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 Elko New Market 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.
The city is split among utilities, and each has its own rules. MVEC's heat pump rebate requires a metered off-peak connection and an application from a QI-certified contractor, Dakota Electric's quality-installation rebates need a registered contractor, and Xcel works through its Trade Partner Network. Check both bills before comparing.
If Minnesota Energy Resources delivers your gas, yes. It lists a residential furnace and boiler tune-up rebate, once every two years per household, for existing homes. The tune-up has to be done by a professional heating technician rather than the homeowner, and the application is due within 60 days of the service. Our tune-up is $129 for the furnace or $219 with the AC. If Greater Minnesota Gas serves you, check its current rebate list instead.
Age alone doesn't decide it. A furnace from that year is about 20, when repairs start to add up, but a sound heat exchanger and a clean burner can keep one running for years. We check the heat exchanger, inducer and control board, and whether the builder oversized it, which shows up as short, frequent cycles. If it is oversized, a smaller two-stage furnace at replacement time usually runs quieter and holds a steadier temperature.
Cleaning, mostly. An HRV has filters and a heat-recovery core that clog with dust, a condensate drain that can plug, and outdoor hoods that collect lint, leaves and frost. Wash or replace the filters, clean the core as the manual directs, and check that both hoods are clear. If the unit has failed, Minnesota Energy Resources lists HRV and ERV units among its heating system rebates for existing homes.
Why a furnace high-limit switch keeps tripping, a symptom-to-cause table, the checks to do yourself, the order a technician follows, and what the fix costs.
Read the guideHow a dual-fuel heat pump and furnace system works in Minnesota, and how to set the switchover temperature from your own gas and electric bills.
Read the guideFurnace quit in a cold snap? Learn how to clear an iced PVC vent safely and stop it from recurring. If it won't stay lit, call 612-429-3465.
Read the guideBrands we service in Elko New Market: Carrier · Trane · Lennox · Goodman · Rheem · Mitsubishi Electric · Daikin · American Standard · Navien · Weil-McLain · and every other major brand
Heat out in Elko New Market? Call or send a request.