Open 24/7 for emergencies
Ductless mini splits in Catharpin run $7,000 to $10,000 for one zone installed, in a ZIP where the Census finds only detached houses.
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
Send this and the office calls or texts you back to set a time.
We’ll call or text this number about your request. By sending it you agree to our terms and privacy policy.
Rather talk now? (703) 997-9757
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 Catharpin
The Census sorts ZIP 20143’s 334 owner homes into detached houses, and about four in ten went up before 1980, one in five before 1960. Houses that old were often built with limited ducts, and the median build year of 1986 leaves plenty of room for additions since. A ductless head heats and cools a single room without a duct: a sunroom, a finished basement, a bedroom that lags behind the rest.
In the electric-heat houses, nearly half the owner homes here, a head can replace baseboard in a room and add cooling to it. In a propane or oil house, it gives one room its own electric heat and cooling without extending ductwork from the system you have. Each head is a zone, and each zone gets its own setting on its own remote.
Dulles averages a January low of 25.2 degrees and logs 101.7 nights a year at or below freezing. Snowfall totaled up to 30.0 inches near Bull Run in January 2016, and large trees came down near Catharpin in June 2020. So the outdoor unit’s spot matters: ask for a wall bracket above the snow line and clear of limbs, not a low pad under a tree.
Prince William County lists work that alters a home’s heating and air conditioning as permit work, which is where a new ductless system lands. The exemption covers swapping an electric furnace, heat pump or condensing unit for the same type in the same spot, not a new head in a room that had none. We can say how your project lines up when we quote it.
When it’s the right call
In a Catharpin house with an addition, a finished basement or a bedroom at the end of a long run, one room lags while the rest is comfortable. A head in that room gives it its own setting, and the original system keeps doing what it does for the rest of the house.
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
Prince William County lists any work that alters a home’s heating and air conditioning as permit work, but swapping an electric furnace, heat pump or air conditioning condensing unit for the same type of unit in the same spot is an ordinary repair that needs no permit. 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.
Ask for the spot, the height and what hangs above it. Large trees came down near Catharpin in June 2020, and snow piles up in a hard winter. A unit on a bracket, clear of limbs, ahead of the first storm is easier than one dug out or repaired after it.
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.
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 Catharpin: Gainesville, Haymarket, Centreville, Chantilly and Bristow.
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
Three rooms come to $12,500 to $18,000 and four to $16,000 to $21,000, each room getting its own indoor head. The HVAC price estimator quiz asks about the rooms you want covered and returns your own number.
In the county’s wording, a mini split is work that alters a home’s heating and air conditioning, because it adds a new source of both to a room. The exemption for like-for-like swaps of an electric furnace, heat pump or condensing unit doesn’t reach a head where none existed. Tell us the rooms and we’ll sort out the permit path with you.
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 Catharpin 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.