In 2026, top DIY cold-climate mini splits deliver up to 24 SEER2 efficiency and...

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In 2026, top DIY cold-climate mini splits deliver up to 24 SEER2 efficiency and reliable heating down to -22°F. Most kits support line sets from 8 to 75 feet, perfect for flexible installs. Expect to save $1,500 to $3,000 compared to pro installation