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A one-zone ductless mini split in Sterling runs $7,000 to $10,000 installed, often for a Sterling Park addition or a basement finished years later.
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 Sterling
Around Sterling Park, south of Route 7, about four in ten homes went up before 1980, and half the homes there are detached houses. Plenty have grown: a family room across the back, a sunroom, a garage closed in as a bedroom. The ductwork rarely followed, and running a new branch to the added room pulls air from rooms already short of it. A wall head there, on its own small outdoor unit, is usually the cleaner answer.
Sugarland Run, Countryside and Cascades are mostly 1980s and 90s, and a lot of their lower levels got finished years later, as an office, a playroom or a guest room. One or two supply registers were enough when it was storage; now it’s the room that runs cold every winter while the thermostat upstairs reads fine. A head down there gives that floor its own setting.
Around Dulles Town Center more than half the homes are in condo and apartment buildings, and about a third of Arcola’s are too. A mini split there is usually for a corner bedroom or a sunny living room the closet system can’t keep up with. The outdoor unit needs the association’s approval, and with seven in ten Dulles Town Center homes rented, the owner applies, not the tenant.
Pick the unit for a Sterling winter, too. NOAA’s normals put January nights at Dulles Airport near 25 degrees on average, with about five nights a year at 10 or colder. For a room with no other heat, like a closed-in garage, ask for a model with ENERGY STAR’s cold climate label, which has to keep most of its heating output down to 5 degrees. Two rooms on a multi-zone outdoor unit run $11,000 to $15,000 installed, and three run $12,500 to $18,000.
Neighborhood by neighborhood
Census figures for the owner-occupied homes in each place, and the room a ductless head usually ends up in.
| Place | Median home built | Most homes are | Heated with | Where ductless usually fits |
|---|---|---|---|---|
| Sterling | 1979 | single-family houses, about 5 in 10 | electricity, about 5 in 10 | Additions, sunrooms and upstairs rooms the old ducts barely reach. |
| Lowes Island | 1996 | single-family houses, about 6 in 10 | gas, about 7 in 10 | Townhouses: the top floor, where the HOA allows the outdoor unit. |
| Cascades | 1996 | townhouses, about 4 in 10 | gas, about 8 in 10 | 1980s and 90s houses: the bonus room, the sunroom, the far bedroom. |
| Sugarland Run | 1983 | single-family houses, about 6 in 10 | gas, about 5 in 10 | 1980s and 90s houses: the bonus room, the sunroom, the far bedroom. |
| Dulles Town Center | 1998 | condo and apartment buildings, about 5 in 10 | gas, about 9 in 10 | Condo buildings: an outdoor unit needs the association’s yes. |
| Arcola | 2017 | townhouses, about 5 in 10 | gas, about 8 in 10 | Townhouses: the top floor, where the HOA allows the outdoor unit. |
| Oak Grove | 2005 | townhouses, about 8 in 10 | gas, about 9 in 10 | Townhouses: the top floor, where the HOA allows the outdoor unit. |
By the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
When it’s the right call
A garage turned into a bedroom or an office in an older Sterling Park house usually has a slab floor, a framed-in door opening and no duct at all. A head sized for that room, slab and walls included, makes it livable all year.
In a three-level townhouse the heat rises to the bedrooms, and one thermostat can’t please two floors. A head upstairs gives that floor its own setting.
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.
Choosing who installs it
Questions worth asking anybody who quotes you, us included.
A garage room on a slab, a basement with two walls underground and a glassy sunroom need different heads at the same floor area. A quote built on length times width alone is guessing.
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.
SwiftPro was responsive and easy to work with for the mini split installation. The technicians Moises and Oscar were great! Would recommend!
Where we work
Next door to Sterling: Ashburn, Herndon, Reston, Great Falls and Chantilly.
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
Generally, yes. The state’s like-for-like exemption covers swapping electric equipment for new, and a mini split adds a system rather than replacing one. Loudoun County’s fee schedule charges a mechanical permit to add, replace or relocate heating and cooling equipment in a house, and every Sterling permit comes from the county.
Usually, on a wall bracket or a small pad near the unit already there. About a third of Sterling homes are townhouses, about eight in ten in Oak Grove, and many townhouse communities have an association that reviews outside changes, so the unit’s spot and the line set’s route go to them first.
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 Sterling 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.