A Rhode Island homeowner choosing between a ductless mini-split system and traditional central AC in 2026 is making three decisions at once: install cost, monthly operating cost, and whether the system also handles heat. This is the head-to-head math for a typical RI home.
Install cost by zone count
RI 2026 install ranges, properly sized equipment, fully installed:
| Configuration | Install range |
|---|---|
| Single-zone mini-split (1 head) | $4,500 to $7,500 |
| Two-zone mini-split (2 heads) | $8,500 to $12,500 |
| Three-zone mini-split (3 heads) | $12,000 to $17,000 |
| Four to five-zone mini-split | $15,000 to $24,000 |
| Central AC (existing ductwork) | $5,500 to $9,500 |
| Central AC (new duct retrofit) | $11,500 to $19,000 |
| Heat pump central system (cooling + heat) | $14,000 to $22,000 |
Rebates and credits
Cold-climate ductless mini-splits and heat pump central systems both qualify for Clean Heat RI (60 percent of install, capped $11,500 per home) and federal 25D (30 percent of net cost). Cooling-only central AC does NOT qualify for Clean Heat RI.
Net cost comparison: 3-zone mini-split vs central AC + gas furnace
| Line | 3-zone mini-split | Central AC + gas furnace |
|---|---|---|
| Gross install | $15,000 | $7,500 + $5,500 = $13,000 |
| Clean Heat RI rebate | −$9,000 | $0 |
| Federal 25D (30% of net) | −$1,800 | $0 |
| Federal 25C (gas furnace if eligible) | $0 | −$600 (capped) |
| Final out-of-pocket | $4,200 | $12,400 |
Operating cost — annual fuel use, RI 2026 prices
For a 2,000 sq ft RI home using ~80 MMBtu/yr heating + ~12 MMBtu/yr cooling:
| System | Annual heating cost | Annual cooling cost |
|---|---|---|
| 3-zone mini-split (COP 2.8 heat, SEER2 22 cool) | ~$2,400 | ~$340 |
| Central AC (SEER2 16) + gas furnace (95% AFUE) | ~$1,760 | ~$470 |
| Window units (typical SEER 10) | n/a | ~$720 |
Retrofit considerations
- Existing ductwork in good condition. Central AC is significantly cheaper to install. Mini-split makes sense if room-by-room temperature control matters.
- No ductwork or old/leaky ducts. Mini-split wins. Adding new ductwork costs $6,000 to $12,000 and reduces ceiling height.
- Older RI home with plaster walls. Mini-split refrigerant line runs through 3″ holes are dramatically less invasive than duct chases.
- Whole-house comfort. Each mini-split head heats and cools its zone independently. A central system runs as one zone unless you add complex zoning controls.
What Horizon HVAC handles
Horizon HVAC installs both ductless mini-split systems (Mitsubishi, Daikin, LG, Fujitsu) and central AC systems (Carrier, Lennox, Trane, Goodman). We are a registered Clean Heat RI installer for cold-climate heat pump systems. RI HVAC License #00007430.
Further reading
- Heat pump vs boiler 20-year math
- Full Clean Heat RI rebate breakdown
- Heat pump installation across RI
- AC repair when an existing system needs work
Get a head-to-head quote
A free in-home estimate gives you the gross install cost, rebate, federal credits, and out-of-pocket for both a mini-split system and a central system in writing before any decision is made.
Call (401) 425-9879 or schedule online.
Sources: U.S. Department of Energy ductless heat pump performance data, EnergyStar certified equipment specifications, RI OER Clean Heat RI program documentation. Install ranges are RI 2026 typical pricing; final pricing depends on home configuration and equipment selection.