For 2026 DIYers in cold climates, mini splits now offer 24 SEER2 efficiency and...

https://wool-wiki.win/index.php/Zone_Air_vs_MRCOOL_for_a_2_Zone_Setup_I_Might_Expand_Later

For 2026 DIYers in cold climates, mini splits now offer 24 SEER2 efficiency and can heat down to -22°F, cutting energy bills without frozen pipes. Most kits fit 8-75 ft line sets for flexible installs