Tyler Griffin, SwiftPro. September 2026.
Ductless prices, installed:
| System | Installed |
|---|---|
| 1 zone | $7,000 to $10,000 |
| 2 zones | $11,000 to $15,000 |
| 3 zones | $12,500 to $18,000 |
A zone is a room. One indoor head hanging on one wall, conditioning that space on its own thermostat.
Look at what happens between one zone and two. The jump is four thousand dollars, and then the third zone only adds fifteen hundred. That is not us padding the second one. Zone one carries the outdoor unit, the electrical and the cost of getting a crew to your house at all. Zone two frequently needs a bigger outdoor unit than zone one did. By the third you are mostly paying for another head and another line set, which is comparatively cheap.
The useful thing to take from that: if there is any chance you will want a second room done, price it now. Coming back in two years usually means a second outdoor unit sitting next to the first one, and that costs more than the zone would have.
What moves the price
Distance, mostly. The line set is refrigerant tubing that has to physically get from the outdoor unit to the room you are conditioning. A head on the wall directly behind the condenser is a short, tidy run. A head in a finished attic on the far side of the house means somebody is opening up walls and putting them back.
Then the head itself. A wall mount is the cheapest and it is what most people picture. Ceiling cassettes, floor consoles and slim ducted units cost more, and sometimes the room does not give you a choice.
And electrical, since every mini split wants its own circuit. Whether that is a ten foot run to a panel with space in it or something more involved is the kind of thing we find out standing in your basement.
When it is the right call
The clearest case is one room that is always wrong while the rest of the house is fine. Before you spend seven thousand dollars on it, though, read why one room in your house is so cold, because ductless sits near the bottom of that list. Above it are a closed damper, a crushed flex duct, a filter nobody has touched since the last administration. We would rather find one of those and save you the money.
The other strong cases are additions, garage conversions, finished attics and basements. New space with no ducts. Extending existing ductwork into it tends to starve the rooms already depending on that system, which trades one uncomfortable room for three.
Some older houses around here run on boilers and radiators and have no ductwork at all. Ductless is how those get air conditioning without tearing into plaster.
When it is not
If the whole house is uncomfortable, one mini split is an expensive bandage on the wrong problem. Whole-house problems want whole-house answers, and the number you want then is on the furnace and AC estimator.
Things people ask
Does it heat, or only cool? Both. A ductless system is a heat pump. Modern cold-climate units keep making heat well below freezing, which covers everything a Northern Virginia winter does.
How many heads on one outdoor unit? Commonly four or five, depending on the equipment. The sizing has to be right though. Too many heads hung off too small an outdoor unit is a system that disappoints everybody.
Is it loud? Indoors, it is one of the quieter things in the house. Outside it is comparable to a normal condenser and it spends most of its life running at low speed instead of slamming on and off.
Do I need a permit? Yes. If a contractor tells you otherwise, that tells you something about the rest of the quote.
Price one in about two minutes: ductless mini split estimator. Doing the whole house instead, use the furnace and AC estimator.
SwiftPro Heating, Cooling & Plumbing, 4230 Lafayette Center Drive Suite N, Chantilly, VA 20151. (703) 997-9757. Serving Northern Virginia.
