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A one-zone ductless mini split runs $7,000 to $10,000 installed in Round Hill, often for an old-town house built for summer breezes, not ductwork.
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 Round Hill
Most of the old town is one historic district: the Town’s comprehensive plan counts 204 of its 257 buildings as contributing, says most homes inside the limits went up before the end of the 1920s, and lists boarding houses such as the Nanny Nichols at 40 Main, from 1890. Virginia’s historic register says the village drew visitors escaping Washington’s summer heat. Houses from then were built to catch a breeze; cooling ducts, where there are any, came later, and they often reach the first floor better than the bedrooms above.
A mini split suits a house like that. One outdoor unit serves a head in every room that wants one, through a hole roughly three inches across instead of chases cut through plaster and old framing, and the heads heat as well as cool. Across 20141 the Census dates 156 homes to 1939 or earlier.
Out in the subdivisions built since the mid 1990s, a head often answers a winter complaint as much as a summer one. A bonus room over an unheated garage sits on a cold floor, at the far end of the duct run, through the 115 or so nights a year the Purcellville station falls to freezing. A head gives that room its own heat.
The January 2016 blizzard left 36.3 inches a mile outside town by a spotter’s measure, and in a normal year the Purcellville station sees about five nights at 10 degrees or less. Hung on wall brackets or set on a tall stand, the outdoor unit’s coil stays out of the drifts, and the water each defrost sheds drips away rather than building an ice pile under it.
By the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
ZIP 20141 as a whole: every Round Hill address, the Town and the neighborhoods around it. The Census place for the Town alone has too few homes for steady figures.
When it’s the right call
In an old Round Hill house with no ducts upstairs, summer often means a window unit per room, hauled in every June and out every fall. A multi-zone mini split replaces them with wall heads and one outdoor unit: two zones run $11,000 to $15,000 installed, three run $12,500 to $18,000.
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.
A head makes condensate while it cools, and that water needs a way out: a drain line through the wall, or a small pump where gravity won’t do it. In a plaster-walled house, ask how that line runs before the head’s spot is final.
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.
He was very professional and had a great grasp of a mini-split system, the product you use and installation options in my particular space. He must be a very valued resource for your company.
Where we work
Next door to Round Hill: Purcellville, Bluemont, Philomont, Hamilton and Middleburg.
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
Loudoun County calls a National Register district strictly honorary, and it names Leesburg, Middleburg and Purcellville, not Round Hill, as the towns that run their own historic districts. Still, an outdoor unit and line set look better off the street face of a Queen Anne or Italianate house, and the Town’s zoning permit covers additions and accessory structures, so call the Town at (540) 338-7878 first.
They can carry most of it. January nights at the Purcellville station average 24.5 degrees, and cold-climate heads keep heating through that. In a drafty 1890s house, though, we’d usually keep the heat you have for the coldest nights.
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 Round Hill 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.