In 2026, DIYers tackling cold-climate mini splits can expect units with up to...

https://www.slideserve.com/gwyneyxcez/what-does-cop-2-1-mean-for-heat-pump-heating-costs

In 2026, DIYers tackling cold-climate mini splits can expect units with up to 24 SEER2 efficiency and reliable heating down to -22°F. Most models support line sets from 8 to 75 feet, making flexible installs easier than ever