Comparing 2026 DIY mini splits? MRCOOL offers 24 SEER2 and best value for...

https://codysnewinsight.swiftnestly.com/posts/should-i-inspect-line-set-insulation-and-connections-every-year

Comparing 2026 DIY mini splits? MRCOOL offers 24 SEER2 and best value for climates above -15°F. Zone Air’s 23 SEER2 Hyper Heat keeps heating down to -22°F. Pick based on your winter lows, not just the efficiency rating.