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Ductless in Chantilly runs $7,000 to $10,000 installed for one zone, one room with its own head, usually a basement or a room finished after the builder left.
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 Chantilly
Chantilly’s houses came with ductwork: the typical owner’s house in 20151 went up in 1987, in South Riding in 2006. Boilers are rare in Chantilly’s houses, and when there is one, we service and replace it. So a Chantilly mini split is a one-room fix, not a whole-house one: for the level somebody finished later, or for a room whose job changed.
In 20151 about 6 in 10 homes are single-family houses, and plenty of their basements were finished years after the house went up, as a family room, a guest suite or a gym. A head on a basement wall, with its outdoor unit just outside, gives that level heat and cooling on its own schedule without stealing air from the floors above.
South Riding’s houses are younger and rarely short of ducts. There a head usually goes in a room whose use changed: a bedroom turned into a home office where the computers run all day, a nursery that needs to sit warmer than the rest of the floor, a guest room kept shut most of the year. One thermostat sets one temperature for a whole floor; a head lets that one room disagree.
Greenbriar is the older corner of 20151, where the typical owner’s house dates from 1970, and its sunrooms and back additions are where the original ducts run out. About 3 in 10 Greenbriar homes are in condo or small multi-unit buildings, where an outdoor unit needs the association’s yes before anybody drills a wall. The permit in 20151 comes from Fairfax County, with its rules listed below; in South Riding it’s Loudoun County.
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 |
|---|---|---|---|---|
| South Riding | 2006 | single-family houses, about 5 in 10 | gas, about 8 in 10 | Townhouses: the top floor, where the HOA allows the outdoor unit. |
| Chantilly | 1987 | single-family houses, about 6 in 10 | gas, about 5 in 10 | 1980s and 90s houses: the bonus room, the sunroom, the far bedroom. |
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 basement finished after the house went up often runs on a register or two tapped off the main duct, and the slab and the walls win that fight. A head sized for the basement’s walls and floor heats it on its own.
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.
Paperwork, locally
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.
In a South Riding townhouse the pad out back may already hold the main condenser, and in a 20151 basement the line set has to reach an outside wall. Ask where the outdoor unit and the line cover go before you sign.
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.
Arrived within an hour on a Sunday morning and provided great service.
Called SwiftPro around 5 am and their electronic system scheduled an appointment for us same day.
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 Chantilly: Centreville, Catharpin, Herndon, Aldie and Oakton.
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
Often, if it can reach both. Two zones run $11,000 to $15,000 installed and three zones $12,500 to $18,000. Rooms at opposite ends of the house sometimes do better on two single-zone systems, so we price it both ways. The HVAC estimator quiz gives your house its own number first.
Depends on the house. If the ducts can carry more air to that room, zoning may do it; if the room was never on the duct plan, a head is the cleaner fix. Our zoning or ductless guide lays out both.
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 Chantilly 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.