Air duct cleaning in Fairfax.
Duct and dryer vent cleaning in the City of Fairfax and the county side. We put a camera in and photograph what’s in yours, so you see it before a price.
- Camera photos first
- Priced by the system, in writing
- Dedicated HVAC team
Get your duct price in writing
One Fairfax address, three kinds of duct system.
The City of Fairfax and Mantua are mostly single-family houses from the 1960s, with sheet-metal ducts and returns that are often just panels across the floor joists. Kings Park West runs to 1970s houses and townhouses. Fair Lakes and Fair Oaks went up in the 1990s, and a lot of Fair Oaks is in apartment and condo buildings, where the system is small and the job goes quicker.
So the first question on a Fairfax call isn’t the price, it’s which of those houses you’re in. A 1965 rambler in Mantua and a 1997 townhouse in Fair Lakes are different jobs, and the camera tells us which one before you pay for anything. Merrifield adds a fourth kind: more than half of it built since 2000, mostly condo and apartment buildings with compact systems.
Heating is a bigger share of what we do in Fairfax than in most towns, and the first cold week is when people notice their ducts: the furnace fires for the first time since spring, and the smell in the first ten minutes is whatever has been sitting in the system. If it fades by lunch, it was dust burning off; if the registers still blow grey a week later, that’s when the camera earns its keep.
Kings Park West is the exception on the county side: 1970s houses and townhouses, and close to half of them heat with electricity. A heat pump runs its blower for longer stretches in winter than a gas furnace does, so the filter and the ducts in those houses move more air, and more dust, over a year. Check the filter a month after you change it; in a Kings Park West heat pump house, one that’s grey that soon is the first sign the ducts deserve a look.
What the ducts look like across Fairfax.
Census figures for the owner-occupied homes in each place, and what that usually means when we open the system.
| Place | Median home built | Most homes are | Heated with | What we usually find |
|---|---|---|---|---|
| Fair Oaks | 1995 | condo and apartment buildings, about 5 in 10 | gas, about 6 in 10 | Condo and apartment buildings: small closet systems and short runs. |
| City of Fairfax | 1966 | single-family houses, about 5 in 10 | gas, about 7 in 10 | Houses from before 1980: original sheet metal, and returns built into the floor framing. |
| Kings Park West | 1976 | single-family houses, about 7 in 10 | gas, about 5 in 10 | Houses from before 1980: original sheet metal, and returns built into the floor framing. |
| Merrifield | 1990 | condo and apartment buildings, about 6 in 10 | gas, about 6 in 10 | Condo and apartment buildings: small closet systems and short runs. |
| Fair Lakes | 1998 | townhouses, about 3 in 10 | gas, about 7 in 10 | 1980s and 90s houses: sheet-metal trunks, flexible runs and one big return. |
| Mantua | 1968 | single-family houses, about 7 in 10 | gas, about 7 in 10 | Houses from before 1980: original sheet metal, and returns built into the floor framing. |
Fairfax houses, by the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
The City of Fairfax
- Median home built1966 Census
- Built before 1980about 7 in 10 Census
- Built since 2000about 2 in 10 Census
- Most homes aresingle-family houses, about 5 in 10 Census
- Heated withgas, about 7 in 10 Census
- Rentedabout 3 in 10 Census
- Houses that age often have returns built into the floor framing, which pull dust from the whole floor. We clean returns first.
The Fairfax County side
- Built before 1980about 3 in 10 Census
- Built since 2000about 4 in 10 Census
- Most homes arecondo and apartment buildings, about 4 in 10 Census
- Heated withgas, about 6 in 10 Census
- Rentedabout 5 in 10 Census
- Townhouse dryer vents run long, to the roof or the back wall, and long runs clog sooner.
- Condo systems are small and quick to clean; anything shared through the building belongs to the association.
What duct cleaning costs in Fairfax.
The same price book as our air duct cleaning page, for a home up to 2,000 square feet on one system. We look first: the tech takes a cover off, puts a camera in and photographs what’s in your ducts, then shows you, so you see their current condition before you decide. No charge, including when yours are fine. Then you get the price in writing, then we clean.
- Return Air Duct Cleaning$298
- Whole Home Air Duct Cleaning$598
- Whole Home Air Duct Cleaning with ActivePure Air Scrubber$1,798
- Dryer Vent Cleaning, on its own$298
- Dryer Vent Cleaning, added to a duct cleaning$199
A second system bills at 90 percent of the tier, because it’s isolated and cleaned on its own. The calculator on our air duct cleaning page does the arithmetic for a bigger house.
The dryer vent cleaning is the yearly one, and it’s in Comfort+ membership at $199 a year along with a water heater flush with a sewer camera inspection, a heating maintenance visit and a cooling maintenance visit.
When duct cleaning is worth it in Fairfax.
The returns are open joist bays
In plenty of 1960s Fairfax houses the return isn’t a duct at all: it’s the space between two floor joists with a panel nailed across the bottom. Sixty years of whatever fell through the grille ends up in there, and it’s the first place the camera goes.
Nobody remembers the last time
Which is most houses. Nobody opens a duct, so it never comes up until somebody looks.
You just finished a renovation
Drywall dust goes wherever the air goes, and the system was running while they sanded.
What the county says about dryer vents.
Fairfax County
Fairfax County Fire and Rescue tells every household to clean the lint out of the dryer vent pipe once a year, sooner if clothes are taking longer to dry, and to have a gas dryer checked by a professional. Source.
How to pick the best duct cleaning company in Fairfax.
Questions to ask anybody who quotes you, us included.
Will they tell you when your house doesn’t need it?
A 1990s house in Fair Lakes that’s had its filter changed on schedule can look fine on camera. If yours does, the right answer is to change the filter and check again in a few years, and that’s what a good company tells you.
Do they look before they quote?
Ask whether they’ll put a camera in and show you photos of what’s inside first. A price given at the door, sight unseen, is a price for the average house, not yours.
Do they clean the returns, or only the supply vents?
The returns are the big grilles that pull air back to the system, and they’re the side that collects dust. A job that only counts supply registers leaves half the system alone.
Is the price for the whole system, in writing?
Ask what it covers: every supply and return, the main trunk, the blower compartment. The $59 mailbox coupon covers getting somebody into the attic.
What our customers say.
I would gladly recommend them to anyone in the greater Fairfax/Alexandria area without reservation.
Swiftpro came out the same day I called when my AC was out and had it fixed in less than an hour after arriving.
Aaron is great ! He explained to me about how they clean the dryer vent, he replaced my old one with a flex type vent duct, he showed me the camera he used to see into the dryer vent. Very professional answered all my questions . Definitely 10 out of 10.
5.0 stars across 884 Google reviews. Read them on our reviews page.
Duct cleaning questions from Fairfax.
Is duct cleaning different in an older Fairfax house?
Yes, mostly in where the dust collects. A 1960s house has longer sheet-metal trunks and those joist-bay returns, and the heaviest dust is usually on the return side. A 1990s townhouse in Fair Lakes runs mostly flexible duct off one big return, which takes a softer brush and less time. Either way the photos come before the price.
Do you serve the City of Fairfax as well as the county side?
Yes. Inside the city line and all the Fairfax County streets with a Fairfax address, from Mantua and Kings Park West to Fair Lakes and Fair Oaks. Same crew, same prices. Duct cleaning needs no permit on either side of the line, so the City or County question that matters for a furnace swap never comes up.
Do you clean ducts in Fair Oaks and Merrifield condos?
Yes. Most units in Fair Oaks and Merrifield have one compact air handler in a closet feeding a handful of short runs, which makes for a quicker visit than a house. Check one thing with the association before booking: a dryer vent that climbs through the building, instead of going straight out your own wall, may be theirs to clean.
How much does air duct cleaning cost in Fairfax?
$598 for Whole Home Air Duct Cleaning on a home up to 2,000 square feet with one system, $298 for Return Air Duct Cleaning, and $1,798 with an ActivePure air scrubber installed. A dryer vent is $298 on its own or $199 added to a duct cleaning.
Is it worth it?
Sometimes, and the camera photos are how you find out. If the duct walls are furred over, cleaning takes that out of the loop your air runs through, and the before and after are obvious. If the metal is clean, it isn’t worth doing and we’ll say so. The EPA’s position is that routine cleaning hasn’t been shown to prevent health problems, so we don’t sell it that way.
Duct cleaning in the towns next door.
- Air duct cleaning in Oakton
- Air duct cleaning in Burke
- Air duct cleaning in Vienna
- Air duct cleaning in Annandale
- Air duct cleaning in Springfield
More from SwiftPro in Fairfax
Camera photos first, at no charge.
Call, or book online and pick a window. The camera photos come first and cost nothing, including when yours turn out to be fine.
SwiftPro Heating, Cooling & Plumbing is a licensed, BBB Accredited (A rating), independently owned heating, cooling and plumbing company in Chantilly, serving Fairfax and the rest of Northern Virginia. Virginia contractor license #2705192276. 5.0 stars across 884 Google reviews. SwiftPro maintains a dedicated HVAC team and a dedicated plumbing team.
SwiftPro Heating, Cooling & Plumbing, 4230 Lafayette Center Dr, Suite N, Chantilly, VA 20151, (703) 997-9757. Book online, read our reviews, or see every town we serve.