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

https://lilyluxemaids.com/cheapest-mini-split-is-650-why-not-just-buy-that/

For 2026, top DIY cold-climate mini splits deliver up to 24 SEER2 efficiency and operate down to -22°F, perfect for harsh winters. Most support 8-75 ft line sets, letting you place units with flexibility