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A furnace tune-up in Round Hill is $99 a system, for a propane furnace or a heat pump, the two ways most of 20141 stays warm.
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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 Round Hill
Utility gas heats just 46 of the 2,362 owner homes in 20141; electricity heats 1,257, mostly through heat pumps, and propane 953. So a Round Hill tune-up usually takes its gas readings on propane, at two points: what arrives at the furnace, and what the burners get past the gas valve.
At the Purcellville weather station, three miles east-northeast, January nights average 24.5 degrees, and a mesonet NWS listed read an unofficial minus 5 a mile southeast of Round Hill on January 23, 2025. On nights like those a heat pump leans on its backup: electric heat strips in most all-electric houses, a propane furnace where the two are paired. The tune-up runs the system until the backup comes on, since a part used a few nights a year is the likeliest to fail quietly.
The Blizzard of 2016 left 36.3 inches a mile west-northwest of Round Hill, the second-highest total in the Weather Service’s final Loudoun count. A high-efficiency propane furnace usually breathes through two white plastic pipes in a side wall or the roof; bury them in a drift and it shuts itself off on its pressure switch, which is its job. The tune-up proves that switch still trips. A heat pump needs clearance too: set low on its pad, the water it sheds while defrosting can freeze into a block under the coil.
Freezing rain left up to 0.15 inch of ice at Round Hill on February 7, 2018, and in February 2010 the weight of the snow knocked out power across Loudoun County. A propane furnace stops with the power, since its igniter, inducer and blower run on electricity, and one that won’t relight once the lights are back is worth a call. In the old town, where the Town’s plan says most houses predate 1930, the furnace may vent into a masonry chimney far older than it; the tune-up checks the exhaust actually rises.
By the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
ZIP 20141 as a whole: every Round Hill address, the Town and the neighborhoods around it. The Census place for the Town alone has too few homes for steady figures.
When it’s worth doing
On a high-efficiency furnace, check the two white pipes outside first. Snow or ice over their ends trips the pressure switch. Clear them by hand, and if it keeps happening, the fall tune-up is where to find out why.
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
Loudoun County Fire and Rescue says to have heating equipment and chimneys cleaned and inspected every year by a qualified professional, and to keep anything that can burn at least three feet from all heating equipment. Source.
In its fall clock-change reminder, Loudoun County’s fire and rescue system tells residents to check their carbon monoxide alarms, and recommends one outside each sleeping area and on each level of the home, tested 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 tank, its regulator and the line to the house are usually the propane company’s. Ask the tech to say plainly whether low pressure at the furnace is the furnace’s problem or theirs.
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 Round Hill: Purcellville, Bluemont, Philomont, Hamilton and Middleburg.
Questions
Yes, at the same $99 a system. In the fall the tech runs it in heating mode and checks that the backup heat comes on, the way a January night here asks it to.
By mid October. In half of all years the first fall freeze at the Purcellville station arrives by October 25. Check the propane gauge first, too: the furnace has to fire for the tech to take its readings.
$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 Round Hill 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.