No central air, or a system on its last legs, and every contractor quotes you something different: ducted central AC or ductless mini-splits. Both cool. They solve different houses.
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If your house already has good ductwork, central AC is usually cheaper and invisible. Keep it simple. If you have radiator heat and no ducts (half of Northern NJ), mini-splits cool better for less money than cutting new ductwork into a finished house. And they zone room by room. (Full disclosure: Rescue installs ducted systems, not mini-splits — more on that below.)
The numbers
| Central AC (ducted) | Ductless mini-split | |
|---|---|---|
| Installed cost | $5,000–$9,000 with existing ducts | $4,000–$5,500 per zone; $12,000–$20,000 whole-house |
| Needs ductwork | Yes | No |
| Zoning | Whole house (or costly dampers) | Room-by-room by default |
| Looks | Invisible — vents only | Wall units in each room |
| Efficiency | Good (SEER2 14–17) | Excellent (SEER2 18–27), no duct losses |
| Also heats? | No | Yes — most are heat pumps |
The duct question decides it
Ducts are the whole ballgame. Leaky attic ductwork can throw away 25–30% of the cooling you pay for. If your existing ducts are bad, the "cheaper" central AC quote isn't actually cheaper. And if you have no ducts at all, retrofitting them means opening walls and ceilings in every room. That's why brownstones in Hoboken, Victorians in Montclair, and radiator capes across Clifton almost always get mini-splits.
What people get wrong about mini-splits
- "They're ugly." Modern heads are slim; recessed ceiling cassettes disappear entirely.
- "They're weak." Sized right, a multi-zone system carries a whole colonial through a 95°F week without breaking a sweat.
- "They're just AC." Nearly all of them are heat pumps, which means shoulder-season heating that beats firing the boiler in October. See furnace vs. heat pump.
When central still wins
- Forced-air heat already in place. The ducts exist; use them (central AC service)
- You hate seeing equipment on walls and have accessible attic/basement runs
- Whole-house even cooling with one thermostat is the priority
Where Rescue stands
We install central air and whole-home ducted heat pumps — we don't install mini-splits (we do offer a $99 tune-up for existing ones). If your house has no ducts and ductless is genuinely the right answer, we'll tell you that at the estimate instead of forcing a ducted system that doesn't fit. What you'll always get from us: a real Manual J load calculation and a straight recommendation.
Want the honest answer for your house? Request a quote or call (866) 737-2830. Related: AC installation, AC replacement.