Compare
Ductless Mini-Split vs Central AC: Which One Should You Install?
Our take
Central AC if you have ductwork; ductless if you don't, OR if you have specific cold/hot rooms a central system can't reach.
Side by side
| Factor | Central AC (with Existing Ductwork) | Ductless Mini-Split |
|---|---|---|
| Upfront cost (typical install) | $5,000–$8,000 central AC + furnace coil | $3,500–$4,500 single-head; $9,000–$15,000 multi-head |
| Cooling capacity | Whole home from one outdoor unit | Per-room — sized to each space |
| Efficiency (SEER2) | 14–22 | 18–28 (often higher than central) |
| Aesthetics indoors | Hidden in ducts; only registers visible | Visible wall-mounted indoor heads |
| Zoning | Whole house unless you add zoning system | Each head is its own zone by default |
| Installation in homes without ductwork | Requires running ducts ($5–15K extra) | Routes via small refrigerant lines |
| Heating? | AC only — needs furnace separately | Most ductless = heat pumps, heat + cool |
Central AC (with Existing Ductwork) wins when:
- Forced-air home with existing ductwork in good shape
- Whole-home cooling needed
- You're replacing an old central AC
Ductless Mini-Split wins when:
- Home has hot-water radiators or electric baseboard (no ducts)
- Adding an addition or finished basement
- One specific room is always cold/hot (bedroom over garage, sunroom)
- You want zone-by-zone control
The full take
If you have ductwork, central AC is usually right. The duct system gives you whole-home coverage cheaply. Adding zoning later costs $2–4K but provides per-zone control without visible indoor heads.
Ductless wins when you don't have ducts (radiator-heated home, electric baseboard) or when one specific room is impossible to cool through the existing duct system. A single-head mini-split for a hot bedroom over a garage costs ~$3,500–$4,500 and solves a comfort problem central AC can't reach.
Multi-head systems (one outdoor unit, several indoor heads) work but get pricey fast — $9,000–$15,000 for a 3- or 4-head system. At that point, weigh against running ductwork and going central, which is sometimes cheaper.
We assess your home's existing ductwork and recommend the option that actually solves the problem at the lowest lifecycle cost.
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Mississauga, ON · Greater Toronto Area and up to 2 hours out — London, Kitchener, Barrie, Kingston, Niagara.