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.
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Ductless mini-split installation in Shorewood costs $4,200–$12,500, flat-rate, for lake-home additions and island cottages. They suit crawlspace additions on lake homes, walkout lower levels and island cottages.
Many Shorewood lake homes were expanded in stages, and an addition may sit on a crawlspace beside a full basement, each with its own heating quirks. On Enchanted, Shady and Spray islands and along the bays, older lake places grew this way. Crawlspace additions freeze first, and the furnace and ducts were rarely resized when the house grew. A ductless head gives such an addition heat and cooling of its own, with no duct run through the crawlspace.
Walkout lower levels facing Lake Minnetonka or Christmas Lake stay cool but soak up humidity, and a mini-split pulls moisture out as it works. The wide glass doors on those levels lose heat in winter, so a head there takes the edge off. Back from the water, 1950s and 1960s ramblers with original ducts can use a head in the one room that never comes right. Outdoor units on wooded lots need a spot away from roof runoff, so we plan placement before the quote.
Updated November 10, 2026
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. Island and bay-front lots can make equipment access and line-set routes harder, and a head in an addition over a crawlspace may need floor insulation to perform. Compare central AC vs ductless costs.
For the many furnace-and-AC pairs from the 1970s and 1980s, CenterPoint's rebates cover a high-efficiency furnace installed by any dealer, and Xcel's cooling rebates cover the new air conditioner or heat pump; ask whether Xcel's 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: Blowing cold air · Running constantly · Defrost cycle · Signs a mini-split makes sense for your house
Usually, yes, with the floor insulated and the pipes protected. A cold-climate head makes heat well below zero, with less output as it gets colder. The head works independently of the furnace, so the addition stops depending on a duct through the crawlspace. We size it from the addition's load.
It helps with moisture while it cools, but for a level that stays damp all year, a dehumidifier ducted into the return does more. Many owners use both. We look at the space and the humidity and recommend which one to start with.
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.
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