For 2026, the best DIY cold-climate mini splits deliver up to 24 SEER2...

https://zulu-wiki.win/index.php/Zone_Air_12k_230V_Specs_and_What_to_Ask_Before_Checkout

For 2026, the best DIY cold-climate mini splits deliver up to 24 SEER2 efficiency and heat down to -22°F, keeping homes cozy all winter. Most units support 8-75 ft line sets, making installation flexible