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Mixed / Temperate · ~15¢/kWh · 4-month season

Air conditioning in Minnesota: sizing, costs & the right units

Minnesota summers are short but genuinely hot and humid: the Twin Cities regularly hit the low 90s with dewpoints high enough to push heat indices past 100, while the famously cold winters mean AC runs flat-out for a concentrated stretch. The metro and southern half carry the cooling load.

Updated June 2026

What to look for in Minnesota

Humidity, not just heat, is the challenge — prioritize dehumidification and right-size, since an oversized unit leaves a Minneapolis room cold but clammy on a muggy August afternoon. With moderate power rates and a short season, a mid-to-high-efficiency inverter is the sensible pick.

What cooling costs in Minnesota

Estimated at Minnesota's average residential rate (~15¢/kWh, approximate) and 8 hours/day. "Per season" assumes 4 cooling months. Your utility rate and usage will vary.

UnitEfficiencyEst. / monthEst. / season
Senville LETO SENL-12CD
Mini-split
 21.2 SEER2 $23 $92
LG Dual Inverter LW1022IVSM
Window
 15 CEER $24 $96
BLACK+DECKER BPACT14WT
Portable
 6.1 CEER $83 $332
Climate-matched

Units that fit Minnesota's climate

All 49 units

Minnesota AC questions, answered

How many BTU do I need in Minnesota?

Use the Mixed/Temperate zone. A 300 ft² room sizes to about 6,500–7,500 BTU; Minnesota's high summer humidity argues for the upper end rather than oversizing.

What type of AC works best in Minnesota?

An inverter unit with a strong dry mode — long, low-speed cycles strip the corn-belt humidity far better than a fixed-speed unit that short-cycles.

What does AC cost to run in Minnesota?

At ~15¢/kWh and 8 hours a day, an efficient 12,000 BTU unit runs about $25–33/month over the short, intense summer.

Electricity rates are approximate state averages; check your utility bill for your exact rate.