Central AC vs Ductless Mini-Split
**Central AC** uses ductwork to cool the whole home—best when ducts already exist. **Mini-splits** zone room-by-room with no ducts—ideal for additions, older homes, and selective cooling.
Step by step
1. Audit ducts
Leaky ducts waste 20-30%—central only wins if ducts are sealed.
2. Count heads
Each mini-split zone needs an outdoor unit capacity plan.
3. Compare SEER2
Efficiency labels changed—use SEER2 and HSPF2 for heat modes.
Central AC vs mini-split
Retrofit cost often decides—ductless avoids tearing walls.
- Central AC: Whole-home even cooling; needs good ducts.
- Mini-split: Zoned comfort; higher install per ton in some layouts.
Use our calculators
Common mistakes
- Oversizing central unit
- Poor mini-split placement above beds
FAQ
Can mini-splits heat too?
Yes—heat-pump mini-splits heat and cool.