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Ductless mini splits in Herndon run $7,000 to $10,000 installed for one zone and $11,000 to $15,000 for two, for the rooms your ductwork never served well.
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 Herndon
Plenty of Herndon houses have more house than they started with. About 4 in 10 owner homes inside the town predate 1980, and three in four in Franklin Farm went up between 1980 and 1999; many have since had basements finished, garages closed in or rooms built on. The system was sized for the original floor plan, and a duct pushed out to the new room borrows air from every room ahead of it. Giving that room its own head and outdoor unit leaves the main system’s balance untouched.
Inside the Town’s historic district, a new outdoor unit and a line set on the wall change the outside of the house, and most exterior changes there need a Certificate of Appropriateness from the Historic District Review Board before work starts. Applications are usually due about 30 days before the board’s hearing, and additions are among its most common cases. If your house is in the district, ask the Town before you set a date.
About half the homes inside the town are townhouses or condos, and in McNair it’s nearly 9 in 10. In a townhouse the top-floor bedrooms run warmest; in a condo the trouble is often one room at the end of a short duct run. Either way, the association usually decides where the condenser may sit, so get its answer in writing before the quote is final.
Inside the town a mini split is mechanical work on a Town of Herndon permit, and the new circuit that feeds it is electrical work, which the Town permits separately. On the county side it’s Fairfax County, and its rules are below.
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 |
|---|---|---|---|---|
| Franklin Farm | 1985 | single-family houses, about 9 in 10 | electricity, about 5 in 10 | 1980s and 90s houses: the bonus room, the sunroom, the far bedroom. |
| Herndon | 1981 | single-family houses, about 4 in 10 | electricity, about 6 in 10 | 1980s and 90s houses: the bonus room, the sunroom, the far bedroom. |
| Dranesville | 1984 | single-family houses, nearly all | electricity, about 6 in 10 | 1980s and 90s houses: the bonus room, the sunroom, the far bedroom. |
| McNair | 2003 | condo and apartment buildings, about 6 in 10 | gas, about 7 in 10 | Condo buildings: an outdoor unit needs the association’s yes. |
| Floris | 1990 | single-family houses, about 8 in 10 | gas, about 6 in 10 | 1980s and 90s houses: the bonus room, the sunroom, the far bedroom. |
| Hutchison | 1979 | townhouses, about 5 in 10 | electricity, about 7 in 10 | Townhouses: the top floor, where the HOA allows the outdoor unit. |
| Sully Square | 2015 | condo and apartment buildings, about 6 in 10 | gas, about 6 in 10 | Condo buildings: an outdoor unit needs the association’s yes. |
By the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
Inside the town limits. Floris, Franklin Farm, McNair and Dranesville, on the Fairfax County side, are counted by the Census as places of their own.
When it’s the right call
A 1980s Herndon basement finished years after the house went up often got whatever air the nearest duct could spare. Because a ductless head heats as readily as it cools, that room finally gets a setting of its own in both seasons.
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
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 Herndon the outdoor unit is the part that needs someone’s yes: the Town’s review board in the historic district, the association in many townhouse and condo communities. A good installer asks before quoting, not after the head is on the wall.
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 Herndon: Reston, Sterling, Great Falls, Oakton 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
Count the rooms that never feel right. If it’s only the top-floor bedroom or a finished lower level, one zone at $7,000 to $10,000 covers it; two run $11,000 to $15,000 and three $12,500 to $18,000. Planning a second room later? Say so now: the outdoor unit gets chosen for every head it will ever run.
Less often. Most of McNair went up since 2000 with ducts to every room, so a head there usually answers one room that never keeps up, like a corner room with two outside walls. The association’s rules on the outdoor unit come first, and about three in four McNair homes are rented, so a tenant needs the owner’s yes too.
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 Herndon 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.