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A furnace tune-up in Haymarket is $99 a system, for Columbia Gas furnaces in the Town and propane ones up on Bull Run Mountain.
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Two of our heating technicians in a Northern Virginia basement, beside an open gas furnace.
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
$99 for one furnace, anywhere we work. The tech checks the gas pressure, the temperature rise, the safeties and the sequence of operation, which is the order the furnace lights, heats and shuts down in. A repair it turns up gets a written price first, and you decide.
Furnace tune-up, one system
$99
Heat pump, boiler or ductless mini split tune-up, one system
$99
Comfort+ membership, a heating maintenance visit every fall included
$199 a year
It’s priced per system, so a house with a second furnace for the upstairs is two tune-ups. A heat pump, a boiler or a ductless mini split is the same $99 a system.
With Comfort+ membership, $199 a year or $20 a month covers four visits every year: a heating maintenance visit in the fall, a cooling maintenance visit in the spring, a dryer vent cleaning, and a water heater flush with a sewer camera inspection. We book each one when it’s due.
What’s different in Haymarket
Inside the town limits the Town names Columbia Gas of Virginia as its gas company, not Washington Gas, and gas heats about six in ten owner homes. Columbia Gas tells customers to have the furnace checked and serviced regularly by a qualified professional, and it makes a point that every natural gas appliance needs ventilation bringing it fresh air. That second line matters in the Town’s townhouses, about a third of its homes, where the furnace often stands in a closet.
A standard furnace with a metal flue burns the air around it, and a louvered door or a vent in the wall is how a closet furnace gets that air; a high-efficiency one piped out the side wall brings in its own. Over the years doors get swapped and closets fill with boxes, and a furnace short of air tends to give itself away once the tune-up runs it through a full cycle, with flames lifting off the burners or a safety switch tripping.
Across 20169 gas heats close to two thirds of owner homes, and close to half of all homes went up from 2000 to 2009. A two-story Dominion Valley or Piedmont house from those years often has a second furnace in the attic heating the bedrooms. It’s the one nobody visits: up the ladder, through the hatch, its flue running out through the roof. Each furnace is its own tune-up at $99, and the attic one deserves the same readings as the basement one.
Propane heats about one owner home in fifteen across the ZIP, close to 600 houses, and about one in eight in Bull Run Mountain Estates, where natural gas heats only about one in ten. The tank in the yard and the regulator on it usually belong to whoever fills it; the furnace from its gas valve on is the tune-up’s. Close to four in ten mountain owners heat with electricity instead, which usually means a heat pump, and a heat pump on the mountain gets its fall tune-up for the same $99.
Neighborhood by neighborhood
Census figures for the owner-occupied homes in each place, and what that usually means for a tune-up.
| Place | Median home built | Most homes are | Heated with | What the tune-up usually meets |
|---|---|---|---|---|
| Bull Run Mountain Estates | 1978 | single-family houses, nearly all | electricity, about 4 in 10 | Little natural gas: heat pumps and propane furnaces. |
| Haymarket | 1995 | single-family houses, about 6 in 10 | gas, about 6 in 10 | 1980s and 90s houses, most on their second gas furnace. |
By the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
Inside the town limits only, about one in eighteen of the owner homes with Haymarket mail. Dominion Valley, Piedmont and Bull Run Mountain Estates sit outside it, in the county.
ZIP 20169 as a whole: every Haymarket address, the Town’s homes included.
When it’s worth doing
In a two-system Dominion Valley or Piedmont house, that’s often the attic furnace falling behind: a clogged filter, a dirty burner, a tired part. It’s the furnace nobody sees, which is why it shouldn’t skip a fall tune-up.
Propane runs at a different gas pressure than natural gas, so the tune-up checks yours against propane’s numbers.
A furnace that went in with the house is close to 20 years old on a lot of these streets. That’s the age when inducer motors and control boards start to go, and a yearly look finds the tired ones before a cold night does.
Safety and paperwork
Prince William County Fire and Rescue says to have a qualified technician inspect the heating system and chimneys every year, to make sure nothing blocks the fumes from venting out of the house. Source.
Prince William County Fire and Rescue lists furnaces and water heaters among the household sources of carbon monoxide, and says to put a CO alarm outside each sleeping area and on every level of the home and to test it monthly. Source.
Our Virginia Class A contractor license, 2705192276, is on the side of the van.
Choosing who tunes it up
Questions to ask anybody who quotes you, us included.
The two gases use different burner orifices and different pressures, and a furnace converted from one to the other should carry a label saying so. In 20169 both are common. Ask whether the tech checks which gas the furnace is set up for before taking a single reading.
Ask before anyone comes out. Gas pressure and temperature rise are readings on a meter, so a real tune-up has numbers in it, not just a look at the filter.
Some tune-ups end in a list. Ask which items are failing now, which can wait a season, and what each one costs, before you agree to any of it.
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 (Moises) did an excellent job assessing our HVAC system and explaining its current condition. We will likely work with them again in the future.
Where we work
Next door to Haymarket: Gainesville, Catharpin, Broad Run, The Plains and Aldie.
Questions
Don’t wait for the appointment. Columbia Gas of Virginia, the Town’s gas company, says to go outside and call 911, then call Columbia Gas. On propane, get outside and call your propane supplier. The tune-up can go ahead once the leak is handled.
$99 for one furnace, and the same for a heat pump, a boiler or a ductless mini split. If it turns up a repair, you get the price in writing before any work, and you decide.
No. The furnace tune-up is its own visit at $99. The Heating Check and the Clean Heat deep clean, the one that takes the blower wheel out and cleans it, are separate offers with their own terms on our Clean Heat page.
Ready when you are
Call, or send the form at the top. One furnace is $99, and anything it needs gets a written price before any work.
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 Haymarket 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.