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A furnace tune-up in Clifton is $99 a system. Out here it burns natural gas or propane, in a basement, an attic or an old cellar.
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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 Clifton
In the 1980s subdivisions around Springstone Drive, about 85 percent of owners heat with natural gas, and the furnace stands in the basement. Out on the big lots along Clifton, Compton and Yates Ford Roads, and in the town itself, natural gas heats only about a quarter of owner homes, while about one in ten burns propane from a tank on the property, roughly seven times the share across Fairfax County.
A lot of those 1980s basements have been finished since, and the furnace often ended up in a small utility room with a door. A furnace drawing combustion air from that room needs a louvered door or a wall vent to get it. Swap in a solid door or pack the room with storage, and the burners can run short of air, which can trip the flame rollout switch, one of the safeties a tune-up tests.
About 64 percent of homes in the Census tract around the town have nine rooms or more, and in a house that size the bedrooms are often heated from a second unit up in the attic, running all winter where nobody sees it. Each furnace is its own tune-up at $99. Half that tract’s owner homes heat with electricity, which usually means a heat pump, and a heat pump’s tune-up costs the same $99 a system.
Inside the Town of Clifton the houses came long before central heat. The Town’s plan puts more than half of them on electric heat, with gas from their own tanks among the rest, and about 44 percent of the town on soils with a high water table. A furnace there may sit in a cellar under a stone foundation, and a damp cellar often shows as rust along the cabinet’s bottom, better spotted in October than January.
By the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
Clifton mail outside the town: five- to ten-acre lots in the Occoquan watershed on Clifton, Compton and Yates Ford Roads, mostly on septic, and the 1980s subdivisions off Springstone Drive and Union Mill Road on county sewer.
ZIP 20124 as a whole, the Town included: its own homes are too few for steady Census figures.
When it’s worth doing
Where a heat pump carries most of the winter and the furnace only takes the coldest nights, it can go months without firing. A fall tune-up runs it through a full cycle on a mild day, so its first real test isn’t the coldest night of the year.
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
Fire and rescue in the town comes from Fairfax County’s Station 16 on Chapel Road, and the county’s heating advice applies on every fuel: a professional cleaning and check once a year, and three feet of clear space around the furnace and the water heater. Source.
The county’s carbon monoxide program covers town residents: an alarm on every floor, gas appliances inspected each fall, and a limited supply of alarms for residents who need one, put up by the local station, which for the town is Station 16. 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.
A furnace in 20124 can run on natural gas or propane, in a basement utility room, an attic or an old stone cellar. Whoever books you should ask both, so the tech knows which pressure figures to check against and how to reach it.
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.
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.
Where we work
Next door to Clifton: Fairfax Station, Burke, Manassas, Centreville and Fairfax.
Questions
Yes, the same visit at $99. The gas pressure is checked against propane’s figures, not natural gas’s; the temperature rise and the safeties are read the same way. If the tank gauge is low, get it filled first, so the furnace can run long enough to test.
Early fall, after the cooling season and before the heat runs hard. The Town holds Clifton Day every October; if the furnace hasn’t had its look by then, book it that week.
$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 Clifton 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.