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A furnace tune-up in Great Falls is $99 a system, whether it burns natural gas from the main or propane from a tank in the yard.
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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 Great Falls
About 2,160 Great Falls owner homes heat with natural gas and about 390 with propane, by the Census count. That propane share, one owner home in twelve, is more than five times the county’s, and both fuels get the same visit at the same $99. Another 1,860 or so heat with electricity, usually through a heat pump, and a heat pump’s tune-up is that same $99. Some of the big houses use both, a furnace for the basement and main floor and a heat pump for the bedrooms, each with its own tune-up at that price.
The county’s records give two in three Great Falls houses a daylight basement, one side open to the yard at ground level. A high-efficiency furnace down there often sends its two white plastic pipes out through that wall, not far above the grass, right where leaves drift in November and snow banks up in January. Block either pipe and a pressure switch, one of the safeties the tune-up tests, keeps the burners from lighting. Rake those pipe ends clear with the yard.
An older furnace often vents up a masonry chimney instead. Nearly every house here has a fireplace on the county’s books and about a third have three or more, so plenty of 1970s and 80s houses carry a big chimney with several flues. Where the furnace still vents by natural draft, it usually takes one of those flues, often shared with a gas water heater. The tune-up checks that its exhaust actually goes up, and tests the switch that shuts the burners off if the exhaust spills back.
September suits it here. The air conditioning still carries the afternoons, and anything the tune-up finds, a cracked igniter, a tired inducer motor, a nest in a pipe end, gets fixed before the house needs heat. Two furnaces are two tune-ups at $99 apiece, done on one trip.
By the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
When it’s worth doing
On a high-efficiency furnace that usually means the pressure switch sees a blocked pipe or a backed-up condensate drain and shuts it down, as it should. Check the pipe ends on the daylight side for leaves, snow or a nest before you call.
Propane runs at a different gas pressure than natural gas, so the tune-up checks yours against propane’s numbers.
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.
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.
A tune-up done only at the furnace can miss the outside end: the plastic pipes at the daylight wall, or the flue an older furnace uses. Ask whether the tech checks the vent end to end.
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.
Questions
No. Fairfax County Fire and Rescue says a chimney serving a wood-burning fireplace should be cleaned and inspected by a licensed chimney sweep at least once a year, and capped. The tune-up covers the furnace and whether its exhaust goes up its flue the way it should. Book both in early fall.
We do, from the shutoff valve beside the furnace inward, at the same $99 as natural gas. The fuel, and usually the tank and the line across the yard, stay with your supplier.
$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 Great Falls 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.