Mini-split vs ducted heat pump: which costs less in 2026?

For a house that already has ductwork, a ducted heat pump replacing the furnace and AC typically costs $14,500 installed. Ductless mini-splits in three rooms, one single-zone system per room, typically cost $9,950. The two prices are not for the same thing, though: one heats and cools the whole house through existing ducts, the other puts a heat pump in three specific rooms. Which one costs less for you depends on how many rooms you need to cover and whether your ducts are worth keeping.

The figures side by side

Both systems are heat pumps: they cool in summer and heat in winter with the same equipment. Our figures are built from the hours each installation takes, multiplied by local HVAC and electrical rates, plus equipment and materials, and checked against market prices and real quotes. They are before sales tax and permit fees, and they update as prices change.

System	What you get	Typical cost	Usual range
Ducted, basic	3-ton single-stage heat pump and air handler	$12,000	$9,350 – $15,600
Ducted, mid-range	3-ton two-stage or variable-speed	$14,500	$11,300 – $18,800
Ducted, premium	3-ton cold-climate inverter	$18,800	$14,600 – $24,400
Mini-split, basic	One multi-zone outdoor unit, three wall heads	$4,950	$3,850 – $6,450
Mini-split, mid-range	Three single-zone systems, one per room	$9,950	$7,750 – $13,000
Mini-split, premium	Three concealed ceiling-recessed units	$18,600	$14,500 – $24,200

Full breakdowns, and calculators for your own system size, are on Heat pump installation and Ductless mini-split.

What each price covers

The ducted heat pump replaces an existing furnace and central AC. The estimate includes removing the old equipment, a new outdoor unit and matching indoor air handler connected to your existing ducts, a new refrigerant line set, pad, disconnect and condensate drain, a dedicated electrical circuit, a compatible thermostat, commissioning and cleanup. It assumes the ducts are in usable condition; sealing, resizing or replacing them is extra.

The mini-splits are priced per room. The mid-range estimate gives each of three rooms its own single-zone system of about 12,000 BTU (1 ton), with a wall-mounted indoor head, a pre-insulated line set of about 16 ft, a condensate drain, a core hole through the wall and a dedicated 240 V circuit per outdoor unit. The basic tier uses one multi-zone outdoor unit for all three heads, which saves equipment and wiring; the premium tier hides the indoor units in the ceiling, which costs more and usually involves drywall work.

Why the comparison is not apples to apples

The ducted price covers the whole house, whatever its number of rooms, as long as the ducts reach them. The mini-split price grows with every room you add: each extra head means more equipment, another line set, another drain and more labor. So:

• For a few rooms, such as an addition, a converted garage, a finished attic or a couple of bedrooms that are always too hot or too cold, mini-splits usually make more sense than touching the central system.
• For a whole house with decent ducts, a ducted heat pump is usually the simpler way to heat and cool everything, because the distribution system is already paid for.
• For a whole house without ducts, such as an older home heated by a boiler and radiators or baseboard heaters, adding ductwork is a major job. Several mini-split heads, or a mix of wall and ceiling units, is often the practical route. Price the rooms you actually need; you may not need a head in every room.

Other things that move the price

• Climate. In mild climates a standard heat pump handles winter comfortably. Where winters are harsh, a cold-climate model, ducted or ductless, costs more but keeps heating at low outdoor temperatures. The ducted premium tier is a cold-climate unit.
• Sizing. Ducted systems are sized in tons, and each extra ton adds to the equipment cost. A room-by-room load calculation (Manual J) often shows the house needs less than the old furnace and AC provided.
• Line set runs. Mini-split heads are cheapest on an outside wall close to the outdoor unit. Interior rooms and long runs through attics or closets add labor.
• Electrical capacity. Each mini-split outdoor unit needs its own 240 V breaker, and a ducted heat pump with backup heat strips draws a lot of power. A full or small panel may need an upgrade, which is not in either estimate.
• Permits. Electrical and HVAC work usually needs a local permit, and the work must be done by licensed professionals where the law requires it.

Incentives

The federal 25C credit, which used to cover qualifying heat pumps, does not apply to property placed in service after December 31, 2025 (IRS). Some states run IRA home energy rebate programs (HEAR/HOMES), availability varies by state, and utilities often offer heat pump rebates. The DSIRE database lists state and utility incentives. Check before you sign, because some programs need pre-approval or a participating contractor.

Before you decide

Ask at least one contractor to quote both options for your house: a ducted system sized by load calculation, and mini-splits for the rooms that matter most. Then run each price through our "Is my quote fair?" tool, which compares it with what homeowners in your area typically pay for the same job.