Open 24/7 for emergencies
The diagnostic visit is $99, and a flame sensor cleaned is $95 to $180 from our published price book.
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Furnace and heat pump repair in Centreville, 20120 and 20121, where close to three quarters of homes heat with gas. Priced before a panel comes off.
5.0 stars across 1,132 reviews
Two of our technicians in a Northern Virginia utility room, between the furnace and the water heater.
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
The same price book as the rest of our site. The diagnostic visit is $99, and the tech prices the repair before starting it.
Flame sensor cleaned
$95 to $180
Igniter or flame sensor replaced
$240 to $410
Blower wheel pulled and cleaned
$300 to $440
Thermostat replaced
$300 to $640
Control board
$550 to $1,180
Blower motor
$670 to $2,400
Repair diagnostic visit
$99
Often same-day, and we will tell you honestly when we can get there.
With Comfort+ membership, $20 a month or $199 a year, the diagnostic visit is included, any service is 15% off, and a heating maintenance visit comes every fall.
What’s different in Centreville
Close to three quarters of Centreville homeowners heat with gas, against roughly half in Chantilly next door. With the median house built in 1990, the furnace in most of them isn’t the builder’s anymore. It’s the second, sometimes the third, and it often shares a tight utility room or closet with the water heater, a space that tends to double as storage.
That second furnace is often the one that changed the venting. Builders in those years usually ran the furnace and the water heater up one shared metal flue. A high-efficiency replacement vents out a wall in plastic pipe and drains water from a condensate trap, which leaves the water heater alone on a flue sized for two. That’s part of why Fairfax County wants a chimney vent certification whenever a fuel-burning appliance is replaced, and why a plugged condensate trap is enough to keep a newer furnace from firing.
The gas company question is simpler here than in our home town. Fairfax County’s utility list puts most of the county on Washington Gas and names Columbia Gas only for parts of Chantilly and Herndon, so a Centreville gas account, and any gas utility rebate on a new furnace, nearly always runs through Washington Gas.
The other quarter of homes heat with electricity, which usually means a heat pump with backup strips in the air handler. Most of the county buys its power from Dominion Energy, while the county lists portions of Centreville and Clifton on NOVEC, so check which one bills you before weighing a dual fuel setup.
By the numbers
From the Census Bureau’s 2020 to 2024 survey. Median year built and heat count owner-occupied homes only.
What you’d notice
A high-efficiency furnace makes water as it burns and drains it through a trap and a small line, sometimes to a pump. When that clogs, the furnace shuts itself down and the water ends up on the floor. Clearing it is a routine repair.
The burners fire and go out a few seconds later, over and over. That’s usually a dirty flame sensor, and cleaning it takes about ten minutes.
No glow, no flame. A cracked igniter is the usual part, and on a high-efficiency furnace a clogged condensate line can stop it cold too.
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 fixes it
Questions worth asking anybody who comes out, us included.
In a Centreville house from the 1980s or 90s, the two often shared one metal flue. A furnace swap that moves to plastic venting leaves the water heater on a flue too big for it, and the right tech checks that before calling the job done.
Flame sensors, igniters and control boards all have a going rate. A tech who can’t tell you the number before starting is asking you to find out afterwards.
Getting the burners lit is half a heating call. Ask whether they check the flue and test for carbon monoxide while the panel’s open.
A big repair on a furnace past 15 or 20 years deserves a replacement price next to it. A good tech puts both numbers in front of you and lets you choose.
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.
Called in the morning for a broken furnace. The technician came out same day. David was very knowledgeable and helpful. We will definitely use SwiftPro for our furnace maintenance in the future as well.
Questions
Fairfax County Fire and Rescue keeps a limited number of CO alarms for residents who need one, and the local fire and rescue station comes out to install it. Centreville has two, Station 17 on Old Centreville Road and Station 38 on O’Day Drive; requests go to the county’s Life Safety Education section at 703-246-3801. The county puts a plug-in alarm’s life at about ten years, so one that came with a 1990 house is long overdue.
Get everyone out first, then call 911 or Washington Gas’s emergency line, 703-750-1400, from outside. Don’t flip switches or light anything on the way out. Once the gas company has made it safe, call us about the furnace or whichever appliance it came from.
Only if it’s packed or shut tight. Both appliances burn gas and need air to do it, so a louvered door should stay louvered, and the room shouldn’t turn into the place the paint cans and moving boxes live. The county’s clearance rule is in the box above.
The diagnostic visit is $99. A flame sensor cleaned is $95 to $180; an igniter or flame sensor replaced, $240 to $410; a control board, $550 to $1,180; a blower motor, $670 to $2,400.
Fix the small parts on almost anything. Before a big repair on an old furnace, look at the replacement number: a furnace alone, keeping the air conditioner you have, runs $4,285 to $14,040 installed, and the HVAC estimator gives your number in about a minute. From about $71 a month at 0% APR for 60 months, the whole price financed, on approved credit.
Ready when you are
Call, or send the form at the top. The tech prices the repair from the book before starting, and if the furnace is at the end of its life you’ll hear that first.
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 Centreville 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.