In 2026, DIY mini splits built for cold climates hit new highs with efficiency...

https://alpha-wiki.win/index.php/Cooper_and_Hunter_HSPF2_13_vs_MRCOOL_HSPF2_10:_Real_Differences_for_Cold-Climate_Mini_Split_Buyers

In 2026, DIY mini splits built for cold climates hit new highs with efficiency up to 24 SEER2 and reliable heating down to -22°F. Systems with an 8-75 ft line set range save $1,500-$3,000 on professional installs