What Should I Set My Thermostat to in a Minnesota Winter?
68–70°F while you're home and awake, lower at night, never below 55°F when you're away. What setbacks save, how heat pumps differ, how to avoid wet windows.
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Monticello is a Mississippi River city on I-94, home to Xcel Energy's nuclear plant and the trumpeter swans that winter at Swan Park.
We repair and replace furnaces, air conditioners, heat pumps, boilers and ductless mini-splits in Monticello and across Wright County. Every visit starts with a $79 trip charge and a written price before any work, and the $79 is waived when you go ahead with the repair.
Updated September 23, 2026

Around town: Mississippi River · Swan Park · Bertram Chain of Lakes Regional Park · Montissippi Regional Park · Lake Maria State Park
Book in MonticelloMonticello was founded in 1856 on the Mississippi, and the older part of town near the river and downtown, where the historic Rand House stands, holds its pre-war homes. The city stayed modest into the 1970s, then grew quickly: from about 1,600 residents in 1970 to 2,800 in 1980 and 4,900 in 1990. Those two decades left a large stock of ramblers, split-entries and split-levels, now 35 to 55 years old, with ductwork on its second or third furnace and duct designs that put heating first.
The fastest growth came next, nearly 7,800 more residents between 1990 and 2010. The 1990s homes from that run typically started with 80% furnaces on metal flues and R-22 air conditioners, while the 2000s homes went in with 90%+ furnaces on PVC. Across both, basements were often finished after move-in, and the furnace and water heater ended up walled into a small utility room.
Monticello's many basements finished after move-in raise a winter safety question. When the furnace and water heater get walled into a small utility room, an 80% furnace or an atmospheric water heater can run short of combustion air, and with the house closed up and exhaust fans running, it can backdraft. A louvered door or a combustion-air duct fixes it. Minnesota law requires CO alarms within 10 feet of every sleeping room, and that includes new basement bedrooms.
Houses near the Mississippi run more humid in July, and so do the finished lower levels that most Monticello subdivision homes now have. Cool air settles downstairs, the lower level feels cold and damp, and the upstairs bedrooms stay warm. Rebalancing the dampers for summer, running the blower on a low circulate setting and adding a dehumidifier for the lower level help more than a bigger air conditioner. On a 1990s house, check the condenser's nameplate; an original unit from then likely runs on R-22.
Monticello is on Xcel Energy for electricity and CenterPoint Energy for gas, so equipment rebates come from two utilities. On the gas side, CenterPoint rebates high-efficiency furnaces and boilers from any dealer, and its ducted air-source heat pump rebate applies only to heat pumps paired with a gas furnace. Xcel offers heat pump, cooling and smart thermostat programs, including AC Rewards. Xcel's heat pump rebates call for a Trade Partner Network contractor, and installs must be finished by December 31, 2026.
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 serves Monticello and the rest of Wright County, about 34 miles from downtown Minneapolis. We repair and replace furnaces, central air, heat pumps, boilers and ductless mini-splits, and we're open 7 days, 7am–9pm. Call 612-429-3465.
A flat $79 trip charge, waived when you approve the repair. Written price before any work; same prices in every town we serve. Installed prices are on our pricing page.
High-efficiency furnaces put water vapor in their exhaust, and on the coldest nights it can freeze at the side-wall termination, or the intake can get buried in a drift. The pressure switch senses the blockage and shuts the furnace down. Clear the pipe carefully and it should restart. If it keeps happening, we can raise or relocate the terminations and check the pipe's slope.
Two of them. Xcel Energy supplies the electricity in Monticello and CenterPoint Energy supplies the gas, so a heat pump or air conditioner rebate goes through Xcel and a furnace rebate goes through CenterPoint. Programs change every year, so we check the current terms when we write your quote and help you file both sets of paperwork.
Often it's marginal. Split-levels from that era usually had heating-first duct designs, with one or two returns for the whole house. Before we replace an air conditioner, we measure static pressure and check the return size. Adding a return upstairs or enlarging the main one can make a new system quieter and more effective than simply matching the old tonnage.
It's a good time to consider it. A heat pump replaces the AC, then heats through milder weather while the CenterPoint gas furnace covers deep cold. CenterPoint's ducted heat pump rebate is written for exactly that pairing, and Xcel runs its own heat pump rebates on the electric side. We quote the straight AC and the heat pump side by side, with the rebate rules noted.
68–70°F while you're home and awake, lower at night, never below 55°F when you're away. What setbacks save, how heat pumps differ, how to avoid wet windows.
Read the guideKettling, banging, gurgling or a grinding pump: what each boiler noise means in a hot-water or steam system, what you can safely check and when to call.
Read the guideFurnace quit in a cold snap? How to tell if the PVC intake or exhaust is iced or drifted shut, clear it without cracking the pipe, and keep it from recurring.
Read the guideBrands we service in Monticello: AirEase · Amana · American Standard · Ameristar · Aprilaire · Arcoaire · Armstrong Air · Bosch · Broan-NuTone · Bryant · Buderus · Burnham · Carrier · Champion · Coleman · Comfortmaker · Concord · Daikin · Day & Night · Ducane · ecobee · Frigidaire · Fujitsu · Gibson · Goodman · Google Nest · Gree · Heil · Honeywell Home · Lennox · LG · Lifebreath · Lochinvar · Luxaire · Maytag · Midea · Mitsubishi Electric · MrCool · Navien · NTI · Payne · Peerless · Rheem · Rinnai · RunTru · Ruud · Samsung · Santa Fe · Tempstar · Trane · Triangle Tube · Utica Boilers · Viessmann · Weil-McLain · Westinghouse · York
Heat out in Monticello? Call or send a request.