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In Marshall, one room on its own ductless mini split runs $7,000 to $10,000 installed, often in a village house built long before central air.
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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5.0 stars across 1,132 reviews
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 Marshall
About one home in seven in 20115 went up before 1940. In the old village, Fauquier County’s plan lists stone, frame and brick buildings on West Main Street from the early 1800s, a National Register historic district of 139 properties, and about twenty houses on Anderson Avenue from the 1920s to the mid 1940s, mostly story-and-a-half frame. All of it went up long before central air was common. Where ducts were never squeezed in, a mini split heats and cools room by room through a slim line set.
The I-houses on Main Street are the easy ones. Two stories tall and one room deep, nearly every room has an outside wall, which is where a head and its refrigerant lines want to be: a short run through the wall, down the outside under a cover, to an outdoor unit set behind the house. A head in each of the two upstairs bedrooms, on one outdoor unit, is two zones, $11,000 to $15,000 installed.
North of Main Street the plan describes Marshall’s newer, more suburban side: houses from the 1960s through the 1990s with larger garages and wider driveways. The room over one of those garages, or a garage made into a family room, is the usual space the original ductwork doesn’t serve. Basements are the other: parts of Marshall sit on soils the plan maps with a seasonal high water table 10 to 40 inches down, so a finished basement here can run cool and damp, and a head gives it a setting of its own.
About eight homes in ten across the ZIP are detached houses, and out on the farms and big lots a mini split often goes where no duct ever will: a guest cottage, an office in an outbuilding, a room added off the back.
By the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
ZIP 20115 as a whole: every Marshall address, the village included. The Census place for the village alone has too few homes for steady figures.
When it’s the right call
Wood is the main heat in about one Marshall owner home in thirteen. A stove heats the room it stands in and the ones closest to it, so the bedroom at the end of the hall stays cold in January and hot in July. One head sized for that room covers both.
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.
Paperwork, locally
Fauquier County counts swapping an electric appliance for a similar one in the same spot as an ordinary repair that needs no permit. Moving an appliance to a new spot takes one. Source.
Our Virginia Class A contractor license, 2705192276, is on the side of the van.
Choosing who installs it
Questions worth asking anybody who quotes you, us included.
Every outdoor unit needs a circuit of its own. In a village house rewired in stages, or a farmhouse whose panel also runs the well pump, the space left in that panel can decide part of the price.
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 Marshall: Rectortown, Delaplane, The Plains, Orlean and Broad Run.
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
Usually, yes. In a story-and-a-half house the bedrooms sit under the roof behind short knee walls, and the space behind those walls often gives the lines a way out. One multi-zone outdoor unit can run a head in each bedroom; three rooms are three zones, $12,500 to $18,000 installed.
South of Main Street many houses sit behind porches along the street, so the unit usually belongs to the side or back, reachable, and away from any walk where its winter defrost water could freeze.
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 Marshall 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.