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Quick answer: If your home already has ductwork in decent shape, a central (ducted) heat pump is usually cheaper for whole-home comfort: about $14,500 on average versus about $26,000 for a whole-home ductless system, per EnergySage’s 2026 data. If you have no ducts, or you only need to heat and cool a few rooms, a ductless mini-split is usually the better and cheaper choice. Both are heat pumps: they heat and cool with the same technology.
“Central air vs. mini-split” is really a question about ducts. Both systems use an outdoor heat pump unit to move heat in and out of your home. The difference is how that heat reaches your rooms: through a network of ducts and vents, or through individual indoor units mounted in each room. That one difference drives the cost, the comfort, the look, and the maintenance.
The two systems in one minute
A central (ducted) heat pump has an outdoor unit and an indoor air handler, usually in a basement, attic, closet, or garage. The air handler blows heated or cooled air through your existing ducts to vents in every room, just like a central AC and furnace.
A ductless mini-split has an outdoor unit connected by a small refrigerant line to one or more indoor “heads” mounted high on a wall, on the ceiling, or near the floor. ENERGY STAR describes them as designed for homes or sections of homes that don’t have ductwork. Each head heats or cools its own room or zone and has its own setpoint.
Side-by-side comparison
| Central ducted heat pump | Ductless mini-split | |
|---|---|---|
| Needs ductwork | Yes | No |
| Average whole-home cost (EnergySage 2026) | $14,529 | $25,957 |
| Average cost per ton | $3,790 | $9,163 |
| One or two rooms only | Rarely makes sense | Often the cheapest option |
| Room-by-room temperature control | Limited (unless zoned) | Yes, every head has its own setpoint |
| Duct losses | Possible: a typical house loses 20–30% of duct air to leaks (ENERGY STAR) | None |
| What you see indoors | Vents and returns only | An indoor unit in each zone |
| Filter cleaning | One central filter | A washable filter in every head |
Cost data: EnergySage, updated March 19, 2026. Duct leakage: ENERGY STAR.
When a ductless mini-split is the better choice
ENERGY STAR lists the situations where mini-splits are increasingly used. The ones that apply to most homeowners:
- Homes heated with electric baseboards, wall heaters, or radiators that would also benefit from cooling. ENERGY STAR says certified mini-splits use up to 60% less energy than standard electric radiators.
- Older homes with no ducts that have never had central air.
- Additions, garages, converted attics, sunrooms, and outbuildings, where extending ductwork is difficult.
- Rooms over a garage or next to unconditioned space, where ducts would run through very hot or cold areas.
- Hot or cold spots, such as a home office that’s never comfortable.
- Replacing window AC units with something quieter that also heats.
When a central ducted heat pump is the better choice
- You already have ducts in good condition. Reusing them is the main reason ducted systems cost less per ton.
- You’re replacing a central AC and furnace. A ducted heat pump drops into the same role, often in the same spot.
- You want nothing on the walls. Ducted systems hide everything except the vents.
- You want whole-house filtration through one central filter, or you plan to add a dehumidifier or air cleaner to the duct system.
- You want a dual-fuel setup that keeps your furnace as backup (heat pump vs. furnace).
Before you commit, have the ducts checked. ENERGY STAR notes that leaky ducts make some rooms hard to heat and cool and raise bills, especially when ducts run through an attic, crawlspace, or garage. Sealing them with mastic or metal tape (never ordinary duct tape) is often part of a good installation.
Efficiency and running costs
Both types are rated with SEER2 (cooling) and HSPF2 (heating), and both must meet the same federal minimums for split systems: 14.3 SEER2 and 7.5 HSPF2 (AHRI). In practice, ductless systems often come out ahead in two ways: they avoid duct losses entirely, and they let you heat or cool only the rooms you’re using. A ducted system with leaky ducts in an unconditioned attic can lose a meaningful share of what you pay for before the air reaches a room.
For cold climates, the same rule applies to both: pick a cold-climate model and check its heating capacity at 5°F. Our cold-weather heat pump guide explains what to look for.
Hybrid options worth knowing
- Ducted mini-split (slim-duct) units: a small air handler hidden in a ceiling or closet serves two or three nearby rooms through short ducts. A middle ground if you dislike wall units.
- Mixing both: a central heat pump for the main floor plus a mini-split for an addition or finished attic is common and often cheaper than extending ducts.
- Multi-zone systems: one outdoor unit can serve several indoor heads, so you don’t need a separate outdoor unit for every room.
Quick decision guide
| Your home | Best fit |
|---|---|
| Ducts in good shape, replacing AC/furnace | Central ducted heat pump |
| No ducts, baseboard or radiator heat | Mini-split (multi-zone for the whole house) |
| One room or addition that’s always too hot or cold | Single-zone mini-split |
| Ducts exist but are leaky or undersized | Get a quote for duct repair + ducted and one for ductless, then compare |
| You hate the look of wall units | Ducted or slim-duct units |
Whichever you choose, check for rebates before you sign: many programs require approval or a participating contractor before installation. See our heat pump rebates by state and our heat pump cost guide.
Frequently asked questions
Is a mini-split cheaper than central air?
For one or a few rooms, usually yes. For a whole house, usually no: EnergySage’s 2026 averages are about $26,000 for a whole-home ductless system versus about $14,500 for a ducted heat pump, mainly because each room needs its own indoor unit.
Can a mini-split heat a whole house?
Yes. Multi-zone systems with an indoor unit in each main area can heat and cool a whole home, including in cold climates if you choose a cold-climate model. Open floor plans need fewer heads than homes with many closed rooms.
Are mini-splits more efficient than central air?
Often, because they have no duct losses and let you condition only the rooms you use. ENERGY STAR says a typical house loses 20 to 30 percent of the air moving through its ducts to leaks.
Do mini-splits need maintenance?
Yes. Each indoor unit has a washable filter you should clean regularly, and the system should get a professional check-up once a year, like any heat pump.
Can I add a mini-split to a house that has central air?
Yes. Many homeowners add a single-zone mini-split for an addition, a converted attic, or a room the central system never keeps comfortable.
Sources
- ENERGY STAR: Ductless Heating & Cooling
- EnergySage: How Much Does a Heat Pump Cost? (updated March 19, 2026)
- ENERGY STAR: Duct Sealing
- AHRI: Residential Heat Pumps (efficiency standards)
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