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A furnace tune-up in Catlett is $99 a system. Near Cedar Run, a furnace that sat in floodwater gets checked before it’s lit.
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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 Catlett
None of the 1,040 owner homes in ZIP 20119 heat with utility gas in the Census count. About 300 burn propane from a tank the supplier fills, and the pressure the tech reads at the furnace’s gas valve, burners lit, gets checked against the propane setting on the furnace’s data plate. About 530 heat with electricity, mostly heat pumps, and a heat pump tune-up is the same $99 a system: heating mode, the defrost and the backup heat, run while October is still mild.
Cedar Run is the local wrinkle. Fauquier County’s plan rings the village with extensive floodplain on ground it calls nearly flat, and the creek doesn’t only rise in summer. High water closed Elk Run Road between Tenerife Road and Sowego Road on November 12, 2020, and the second-highest crest on the Weather Service’s list for the Catlett gauge, 22 feet, came on October 15, 1942. A basement or crawlspace that takes water in the fall often puts it right where the furnace sits.
A furnace that stood in water needs more than a tune-up. Furnace makers print the warning in their own manuals: don’t use one if any part has been under water, because trying to run a flood-damaged furnace can end in a fire or an explosion, and a qualified tech should replace the wet gas controls and electrical parts first. Don’t relight it to see. Call us, and we’ll go through it before it runs. If the water stopped short of the cabinet, a tune-up afterward is still worth it, since damp air rusts burners from below.
Heating is the long season here. NOAA’s Warrenton 3 SE station, the nearest with thirty-year normals, counts about 4,700 heating degree days a year and about 13 days when the high stays at freezing or below. Hurricane Sandy came through on October 29, 2012, just as furnaces were starting their season, and blocked forty roads across southern Fauquier with fallen trees and wires. A propane furnace needs power for its igniter, controls and blower; if the heat doesn’t return with the lights, call us and we’ll check it over.
By the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
ZIP 20119 as a whole: every Catlett address, the village included. The Census place for the village alone has too few homes for steady figures.
When it’s worth doing
Even if it stopped short of the furnace, standing water under it rusts the cabinet floor and the burners above it. If it reached the gas valve or the control board, leave the furnace off and call us before the heat is needed.
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
Fauquier County Fire Rescue takes requests for help getting smoke and carbon monoxide alarms through a form on its Public Education page. 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.
After high water, ask whether the tech opens the control compartment and looks for rust, silt or a waterline on the gas valve and the board, and writes down what they find. A furnace that still lights isn’t proof it’s sound.
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 Catlett: Calverton, Casanova, Midland, Nokesville and Bristow.
Questions
The switch on or near the furnace, which looks like a light switch and gets bumped off; the breaker; the thermostat’s batteries and mode; and the gauge on the propane tank. If all of those look right and it still won’t run, call us.
$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 Catlett 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.