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A furnace tune-up in Fairfax is $99 a system. Most Fairfax homeowners heat with gas, so the burners and safeties come first.
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5.0 stars across 1,132 reviews
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 Fairfax
About 7 in 10 homeowners inside the City of Fairfax heat with gas, and the typical owner’s house there was built in 1966. The furnace in a house that age usually stands in the basement or a utility room beside the gas water heater, and the two often vent up one masonry chimney. That’s why the safeties matter so much here: among them are the switches that shut the burners off when the exhaust isn’t leaving the way it should, and a tune-up runs the furnace until each one has had to do its job.
On the county side the furnaces are younger, and more of them are high-efficiency. Fair Lakes, Fair Oaks and Navy went up mostly from the late 1980s on, and plenty of those houses are on their second furnace, one that vents out the side in white plastic pipe and makes water as it burns. Run through a full cycle, a slow condensate drain on one of those shows up as a pressure switch that trips. Better found in October than on a January night.
Kings Park West is different again: close to half its homeowners heat with electricity, which there usually means a heat pump rather than a furnace. Gas or heat pump, the tune-up is $99 a system; on a heat pump in the fall, it’s the heating side the tech runs and reads.
In the condo buildings of Merrifield and Fair Oaks, the heat is often a compact gas furnace in a hall closet, and that closet tends to fill up with the vacuum and the holiday boxes. Fairfax County Fire and Rescue asks for three feet between anything that burns and the furnace, which is hard to keep in a closet. The day the tech comes is a good day to clear it out.
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 |
|---|---|---|---|---|
| Fair Oaks | 1995 | condo and apartment buildings, about 5 in 10 | gas, about 6 in 10 | Condo buildings: compact gas furnaces in closets. |
| City of Fairfax | 1966 | single-family houses, about 5 in 10 | gas, about 7 in 10 | Gas furnaces in older houses, often on a chimney shared with the water heater. |
| Fairfax Station | 1982 | single-family houses, about 9 in 10 | gas, about 5 in 10 | 1980s and 90s houses, most on their second gas furnace. |
| Kings Park West | 1976 | single-family houses, about 7 in 10 | gas, about 5 in 10 | Gas furnaces in older houses, often on a chimney shared with the water heater. |
| Merrifield | 1990 | condo and apartment buildings, about 6 in 10 | gas, about 6 in 10 | Condo buildings: compact gas furnaces in closets. |
| Fair Lakes | 1998 | townhouses, about 3 in 10 | gas, about 7 in 10 | 1980s and 90s houses, most on their second gas furnace. |
| Long Branch | 1968 | single-family houses, about 9 in 10 | gas, about 7 in 10 | Gas furnaces in older houses, often on a chimney shared with the water heater. |
| Mantua | 1968 | single-family houses, about 7 in 10 | gas, about 7 in 10 | Gas furnaces in older houses, often on a chimney shared with the water heater. |
By the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
Most of the Fairfax Station Census place, in the table, has Fairfax mail, so it counts here.
When it’s worth doing
On a gas furnace that usually points at the burners or the airflow. Temperature rise, the difference between the air going in and the air coming out, is the reading that tells which, and it’s one of the numbers a tune-up takes.
That’s the night every furnace in town gets asked to work at once. A tune-up in the fall finds a weak part while you still get to choose when it’s fixed.
The home inspector ran the heat for a minute. A tune-up runs it through a full cycle with the panel off, and tells you what the last owners left you.
Safety and paperwork
Fairfax County Fire and Rescue says to have the heating system cleaned and checked by a professional every year, and to keep anything that burns at least three feet from the furnace and the water heater. Source.
Fairfax County Fire and Rescue names a faulty gas furnace or water heater as a carbon monoxide source, says to have gas appliances inspected every fall, and to put a CO alarm on every floor. 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 furnace’s rating plate lists the range its temperature rise should fall in. Ask the tech what yours read and where that sits in the range. A visit that ends without a number on it was a look, not a test.
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.
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.
Elvis Diaz did an excellent job cleaning our condo’s HVAC system. He was very knowledgeable about maintaining the unit and the price was very reasonable.
Questions
September or October, before the heat runs every night. Fairfax County Fire and Rescue asks households to have gas appliances inspected every fall and the heating system checked every year. Booking early also means a repair it turns up gets fixed on a mild day.
Yes. A furnace from the 1990s is past the fifteen to twenty years most gas furnaces run, and a tune-up tells you whether it’s safe and working right for this winter. If it turns up a repair, the price is in writing first, and you can weigh it against a replacement before you decide.
$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 Fairfax 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.