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A one-zone ductless mini split runs $7,000 to $10,000 installed in Middleburg, often in a house built long before central air, with no window unit showing.
Price range
$7,000-$10,000
8yrs @ 7.99%
$99/mo
15yrs @ 9.99%
$75/mo
Monthly figures on the starting price, the whole price financed, on approved credit. The lender sets the final terms. How financing works
Get your price in writing
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One of our HVAC technicians with a new Trane outdoor unit he just installed.
Licensed and insuredVirginia Class A contractor #2705192276
24/7 emergency serviceOften same-day, and we will tell you honestly when we can get there.
Our own HVAC installersA dedicated heating and cooling team, separate from our plumbers
Price in writing firstYou see every option priced before anything is ordered
What it costs
Installed, from the price book our HVAC price estimator runs on. A zone is one room with its own indoor head, and you get the price in writing before you decide.
Ductless mini split, one zone, installed
$7,000 to $10,000
or $117/mo at 0% APR for 60 months
Ductless mini split, two zones, installed
$11,000 to $15,000
or $183/mo at 0% APR for 60 months
Ductless mini split, three zones, installed
$12,500 to $18,000
or $208/mo at 0% APR for 60 months
Ductless mini split, four zones, installed
$16,000 to $21,000
or $267/mo at 0% APR for 60 months
Ductless mini split, five zones, installed
$19,000 to $25,000
or $317/mo at 0% APR for 60 months
Ductless mini split, six zones, installed
$23,000 to $30,000
or $383/mo at 0% APR for 60 months
Monthly figures: 60mo @ 0% APR on each starting price, the whole price financed, on approved credit. Longer plans lower the payment and cost more in total. The lender sets the final terms. How financing works
Where you land in a range is mostly the distance from the outdoor unit to the room, the kind of head and the room left in the electrical panel.
The second zone costs the most because it often needs a bigger outdoor unit. Our mini split cost guide explains.
What’s different in Middleburg
About one home in four across 20117 went up before 1940, and the Town’s 2016 survey of its Historic District dates around one building in five to before 1840. Houses that old were laid out to cool themselves, and the Town’s design guidelines still suggest using their window and door patterns for cross ventilation. Central air, where it came at all, came later through closets and an attic, and it usually falls short upstairs.
The guidelines are plain about the usual shortcuts. Window units are discouraged where they break up a facade, through-the-wall units are discouraged on historic buildings, and electrical conduit isn’t supposed to climb a historic facade. A mini split head needs one small hole through the wall behind it for its lines and drain, so the head sits inside the front room while everything outside runs down a back or side wall.
Where the outdoor unit lands is the Middleburg question. In the Historic District, equipment, pipes and vents a public street can see need a Certificate of Appropriateness, with scale drawings. A wall bracket around back keeps the unit out of view and up out of the snow: a spotter measured 34 inches in Middleburg in the January 2016 blizzard, and a buried outdoor unit can’t heat.
Out past the town limits, about 82 homes in 100 across 20117 are detached, and the room no duct reaches can be a wing added on or a separate building. A head heats as well as cools, so from the first freeze, around October 25 at the Purcellville station, a guest room or office can warm up without running the whole house.
By the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
ZIP 20117 as a whole: every Middleburg address, the Town and the farms around it, about a tenth of the land in Fauquier County. The Census place for the Town alone has too few homes for steady figures.
When it’s the right call
Plenty of older houses grew a kitchen wing or a back room long after the first part went up, and the ducts never followed. A head in that wing, on an outdoor unit around back, gives it heat and cooling without opening the old walls.
The bonus room, the sunroom, the bedroom over the garage. We check for a closed damper or a crushed duct first; sometimes that’s all it is.
An addition, a finished attic, a garage turned into a room. Stretching the ducts into it usually starves the rooms already on them.
Choosing who installs it
Questions worth asking anybody who quotes you, us included.
In the Historic District that run is part of what the committee reviews if a street can see it. Ask for the route on paper, down a back or side wall in a painted cover, before the hole is drilled.
If the room’s trouble is a closed damper or a crushed duct, a mini split is an expensive fix for a cheap problem. Ask what they checked first.
Ask whether it covers the line set run, the new circuit and putting the walls back, or only the equipment.
Two of our crew going over a work order before the day's calls.
From our Google reviews
5.0 stars across 1,132 reviews. Read them on our reviews page.
We had a mini split ac/heat unit installed. They were here when they said they would be, were very professional, and did a very nice job.
Where we work
Next door to Middleburg: Philomont, Aldie, Round Hill, Hamilton and Purcellville.
The system we put in first
Built to take a beating. Put in by our crew.
Heat lamps, snow and rain on one outdoor unit: that’s Trane’s own film. We’re a Trane Comfort Specialist, on Trane’s own dealer locator, and when you pick a Trane, our crew puts it in.
Films: Trane’s own.
Questions
Only inside the Historic District, and only the parts a public street can see: the outdoor unit, the line cover, any new conduit. Those need a Certificate of Appropriateness, due two weeks before the committee’s monthly meeting on a first Thursday. Loudoun County’s fee schedule lists adding mechanical equipment as permit work, and the Town’s Zoning Administrator may need to clear it first.
Yes, sized for the room. Thick masonry takes a long time to warm and to cool, so a head in a stone or brick room works best left running steady, not switched off and on. January nights at the Purcellville station average 24.5 degrees, and cold-climate heads keep heating well below that.
Installed, one zone is $7,000 to $10,000, two zones $11,000 to $15,000 and three zones $12,500 to $18,000, up to $23,000 to $30,000 for six. The HVAC price estimator gives your number.
Both. A ductless system is a heat pump, and cold-climate models keep heating well below freezing, which covers a Northern Virginia winter.
Ready when you are
Call, or send the form at the top. You get the installed price in writing before anything goes on the wall.
SwiftPro Heating, Cooling & Plumbing
4230 Lafayette Center Dr N, Chantilly, VA 20151
44679 Endicott Dr, Suite 211, Ashburn, VA 20147
Virginia Class A contractor license #2705192276
SwiftPro Heating, Cooling & Plumbing is a licensed, BBB Accredited (A rating), independently owned heating, cooling and plumbing company in Chantilly, serving Middleburg and the rest of Northern Virginia. Virginia contractor license #2705192276. 5.0 stars across 1,132 reviews on Google, Angi, Yelp, the BBB and Facebook. SwiftPro maintains a dedicated HVAC team and a dedicated plumbing team.
From SwiftPro Heating, Cooling & Plumbing in Chantilly. Housing figures are the Census Bureau’s American Community Survey, 2020 to 2024, for each place named; permit, water and sewer facts link to each office’s own page and were checked in September and October 2026.