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

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

In 2026, top cold-climate DIY mini splits deliver up to 24 SEER2 efficiency and heat down to -22°F, perfect for harsh winters. Most kits support 8-75 ft line sets, giving flexible install options. Expect $1,500-$3,000 savings by avoiding pro installation