Mitsubishi Hyper-Heat vs Standard Mitsubishi Heat Pumps
Mitsubishi Hyper-Heat keeps heating to -13°F, and standard models cost less. See which Minnesota rooms need it; our ductless installs run $4,200–$12,500.
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Ductless Mini-Splits in Stillwater, MN
A ductless mini-split in Stillwater runs $4,200–$12,500 installed. They are a common way to cool plaster-walled radiator houses that cannot take full-size ducts.
Mini-split installs in Stillwater homes
Stillwater's older hill houses are the town's strongest case for ductless. A tall frame or brick house from the lumber years often has radiators, plaster walls and a stone foundation, and no space for ducts. Balloon-framed walls run from basement to attic, so a duct chase would also open paths for cold air and noise. A mini-split needs only a small hole through the wall for each head and a line set that can run on the outside of the building.
So a typical job here is a head or two on the second floor, where radiator houses overheat in July, with the boiler left in charge of winter heat. Heads can share heating duty in the shoulder seasons when you would rather not fire the boiler. Downtown, older commercial buildings converted to lofts and condos have their own limits on where an outdoor unit can go, so we check the building's rules first.
Updated November 10, 2026
What affects the price of a mini-split in Stillwater?
Our $4,200–$12,500 installed price comes as a written flat-rate quote, with a 2-year labor warranty on top of the manufacturer's parts warranty. Plaster-walled hill houses with stone foundations and balloon-framed walls need one head per cooled room, with line sets run outside instead of through duct chases. Compare central AC vs ductless costs.
Are there rebates for a mini-split in Stillwater?
Mini-split and cold-climate mini-split heat pumps, a common way to cool radiator homes, have their own Xcel rebates. Ask whether the rebate needs a registered contractor. Rebate programs change every year, so check the utility's current terms before you buy.
Our guides: Xcel and CenterPoint rebates, heat pump rebates.
Symptom guides: Refrigerant change · Aux vs emergency heat · Blowing cold air · Signs a mini-split makes sense for your house
Mini-splits in Stillwater: questions
Will a mini-split damage the plaster walls in my South Hill house?
It takes a small round hole for each head's line set, and we can usually place it where it will be least visible, such as behind the head itself. We avoid cutting into decorative plaster, trim or tile. You will want to decide where each head goes before we start, because the line set path is set by that choice.
Can mini-splits heat a Stillwater radiator house through January?
Cold-climate models keep heating well below zero, but their output falls with the temperature, and a house with little wall insulation loses heat quickly. For most hill houses we suggest keeping the boiler as the main heat and treating the heads as the cooling system and shoulder-season heat. We size to your coldest weather and say what to expect.
More in Stillwater
- Furnace repair in Stillwater
- Furnace replacement in Stillwater
- AC repair in Stillwater
- AC replacement in Stillwater
- Heat pumps in Stillwater
- Boiler service in Stillwater
- Tune-ups in Stillwater
- All HVAC service in Stillwater
Mini-split installs near Stillwater
- Oak Park Heights, MN mini-splits · 2 mi
- Bayport, MN mini-splits · 3 mi
- Grant, MN mini-splits · 5 mi
- Lake Elmo, MN mini-splits · 6 mi
- Mahtomedi, MN mini-splits · 7 mi
- White Bear Lake, MN mini-splits · 9 mi
Brands we install and service
Guides on mini-splits
Central AC vs Ductless: Which Costs Less to Install?
Central AC ($5,200–$9,800) or ductless ($4,200–$12,500)? Which costs less to install in Minnesota depends on your ducts, with national ranges and close calls.
Read the guideDaikin vs Mitsubishi Mini-Splits: A Room-by-Room Guide
Daikin vs Mitsubishi mini-splits for each room of a Minnesota home: bedrooms, living areas, porches and kneewall attics. Installs run $4,200–$12,500.
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