If you’re tackling a DIY multi-zone mini split, Zone Air and MRCOOL are both...

https://wiki-mixer.win/index.php/Zone_Air_Multi-Zone_DIY_Systems:_Are_They_Tested_for_Leaks_Before_Shipping%3F

If you’re tackling a DIY multi-zone mini split, Zone Air and MRCOOL are both solid picks for 2026. Zone Air has a slight edge with a 24 SEER2 rating, meaning it squeezes a bit more efficiency out of every watt compared to MRCOOL’s 23 SEER2