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.
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Central Minnesota Heating and Cooling repairs and replaces furnaces, ACs, heat pumps and boilers in Annandale (Wright County), about 46 miles from downtown Minneapolis.
Annandale bills itself as the Heart of the Lakes, with 26 lakes in the surrounding area, and a lot of the houses on them started out as summer cabins.
The City of Annandale lists CenterPoint Energy and Xcel Energy for in-town addresses; lake homes outside city limits can be on Wright-Hennepin Cooperative Electric instead.
Updated October 27, 2026 · By Eric Brown, owner, Central Minnesota Heating and Cooling

Around town: Thayer Hotel · Minnesota Pioneer Park · Highway 55 · Highway 24 · Clearwater Lake
Book in AnnandaleAnnandale's town site was platted in 1886, and the 1895 Thayer Hotel still marks the old business district. Houses on the blocks around it are early-1900s frame homes and postwar ramblers on full basements, typically with a gas furnace in the middle of the basement and ducts that have been reworked more than once. The town more than doubled between 1950 and 1990 and added more than 1,100 residents by 2010, filling newer streets with split-entries and ramblers.
The lakes are the other half of the story. With 26 lakes within about 10 miles, the roads around Annandale are lined with lake homes, and the cabin conversions among them tend to follow a pattern: a propane furnace squeezed into a closet or crawlspace, baseboard heat in rooms added later, and ducts hung under the floor where the original cabin never had any. Other lots have been cleared and rebuilt with modern walkouts, which heat and cool like any new house.
The winter risk at Annandale lake homes is the house that is only partly heated. Owners who spend weekdays in the metro set the thermostat low, and a water line in an outside wall or a crawlspace freezes while the living room reads 55. Crawlspace ductwork and plumbing need the crawl sealed and insulated, not just the floor above it. Keep the thermostat no lower than the mid-50s, add a Wi-Fi thermostat or a temperature alert, and have the propane tank filled before you leave for a stretch.
Crawlspace ducts under Annandale's converted cabins sweat in July. Cold supply air runs through a damp crawl, condensation drips off the metal, and the crawl gets wetter, which shows up as musty air and rusted duct seams. Sealing the ducts and wrapping them in vapor-tight insulation, or sealing and conditioning the crawlspace itself, stops it. On the lake side of the house, big windows and humid air call for an air conditioner sized to the real load, not the square footage, so it runs long enough to dry the air.
CenterPoint's heating system rebates cover high-efficiency furnaces and boilers and let you use the dealer of your choice. Xcel offers heat pump rebates, including for ductless mini-split heat pumps that suit converted cabins; ask whether the one you want needs a registered contractor. Wright-Hennepin lists its own air-source heat pump rebates, and a propane furnace generally won't qualify for a gas utility rebate.
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 Annandale and nearby towns in Wright County, about 46 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 Annandale 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.
Usually a cold-climate ductless mini-split system, with a head in the main living area and one or two in bedrooms, plus a backup heat source for the coldest nights. New ductwork in a shallow crawlspace means cold, hard-to-seal ducts. Before sizing, we check what has been insulated since the cabin days, because a cabin with new windows and attic insulation needs far less equipment than its age suggests.
Gas at a lake home depends on whether CenterPoint Energy has a main on your road. Inside the city, gas is available. Out on the lake roads it varies street by street, so call CenterPoint with your address first. If gas is not there, we install and service propane furnaces, and a cold-climate heat pump paired with the propane furnace often cuts how much LP you buy each winter.
Usually, if there's a way to vent it. A 90%+ furnace needs PVC intake and exhaust to an outside wall or the roof, plus a condensate drain that won't freeze, which is the hard part in a house on a crawlspace. Closet installs also need the right clearances and a return path. We look at the vent route and drain options before quoting, and sometimes a heat pump paired with the furnace makes more sense.
A weekend-only winter cabin can justify a heat pump, as long as there is a reliable backup. A cold-climate heat pump holds a low setback temperature cheaply through most of the winter, and a propane furnace or electric backup covers the coldest nights. Pair it with a Wi-Fi thermostat so you can warm the house before you arrive and get an alert if the temperature drops. In a lightly insulated cabin, sealing and insulating come 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 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 Annandale: Carrier · Trane · Lennox · Goodman · Rheem · Mitsubishi Electric · Daikin · American Standard · Navien · Weil-McLain · and every other major brand
Heat out in Annandale? Call or send a request.