What Is Make-Up Air, and When Does a Minnesota Range Hood Need It?
Make-up air replaces what a range hood blows outside. What Minnesota's mechanical code requires, why big hoods can backdraft a water heater, and the fixes.
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Hopkins has an older core than most of its neighbors, with a downtown on Mainstreet and compact houses around it, then 1950s ramblers toward Interlachen Park and plenty of apartment and condo buildings mixed in.
We repair and replace furnaces, air conditioners, heat pumps, boilers and ductless mini-splits in Hopkins and across Hennepin 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: Mainstreet · Hopkins Center for the Arts · Minnehaha Creek · Cedar Lake LRT Regional Trail. Neighborhoods: Interlachen Park
Book in HopkinsHopkins began as a factory town. The Minneapolis Threshing Machine Company, later Minneapolis-Moline, opened in 1887, the West Minneapolis Land Company built houses for its workers, and the village incorporated as West Minneapolis in 1893 before taking the name Hopkins in 1928. The blocks near Mainstreet still hold some of those modest early houses, where heat started with coal and the basement was never planned around a modern furnace, coil and water heater.
Beyond downtown, the raspberry fields that once ringed the town gave way to 1950s and 60s ramblers and split-levels, including Interlachen Park. Later decades brought many apartment and condo buildings, which now make up a big share of the city's housing. They range from older buildings on a central boiler to newer ones with a furnace or heat pump in each unit, where the equipment is often tucked into a closet off a hallway with little room to spare.
The prewar houses near Mainstreet have little wall insulation and chimneys that have carried exhaust from coal and then gas for a century, and a cracked flue tile or a crumbling chimney top shows up as poor draft on the coldest days. In condo buildings, a furnace closet whose louvered door was swapped for a solid one runs short of combustion air. The 1950s ramblers mostly need the usual attention: an aging furnace and a fall safety check.
Many small houses near Mainstreet never got central air, and a single ductless head can cool the main floor without anything new in a cramped basement. In condo buildings, outdoor units may sit on a roof or a shared pad well away from the unit they serve, with long line sets that need the refrigerant charge set carefully. Houses in low spots near Minnehaha Creek pick up basement humidity through the summer.
Hopkins is CenterPoint Energy gas and Xcel Energy electricity. CenterPoint's heating rebates cover high-efficiency furnaces, its thermostat rebate covers smart and Wi-Fi models, and you can use the dealer of your choice as long as you apply in the same year as the install. Xcel's heat pump rebates include mini-splits, a good fit for Hopkins' small houses, and run through its Trade Partner Network, so ask whether the rebate needs a registered contractor.
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 Hopkins and the rest of Hennepin County, about 8 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.
It can. Damp air rusts furnace cabinets and burner parts, grows mold on the AC coil and in return ducts, and makes the whole house feel muggy. A portable dehumidifier handles a small space. A whole-home dehumidifier ties into the ductwork and drains on its own. Fix the outside water first, like gutters and grading, then size the dehumidifier to what is left.
In a small, well-insulated house, cold-climate mini-splits can carry most of the winter, but their output drops as the temperature falls below zero, and closed doors block the air from reaching back rooms. Most Minnesota installs keep a backup, either the existing furnace or electric resistance heat. We size heat pumps to the design-day heat loss from a load calculation, not to square footage.
Usually, but the venting decides it. A 96% furnace needs PVC intake and exhaust pipes to an outside wall or the roof, and in a condo that path may cross a neighbor's space or a common wall the association controls. Where it can't, an 80% furnace on the existing vent or a heat pump with an electric air handler may be the practical choice. Get the association's rules to us before we quote.
Yes. We do light-commercial work, including multifamily buildings: boilers and their circulator pumps, furnaces in individual units, rooftop units and ductless systems in common areas. Older buildings often mix equipment of several ages and brands, and we service the common ones. You get a written price before any work starts, and we coordinate access to units with the building manager or association.
Make-up air replaces what a range hood blows outside. What Minnesota's mechanical code requires, why big hoods can backdraft a water heater, and the fixes.
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Read the guideBrands we service in Hopkins: 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 Hopkins? Call or send a request.