Open 24/7 for emergencies
Centreville’s boilers are gas and few, in a town built for furnaces; tune-up $99, new boiler $9,900 to $16,500 installed.
Price range
$9,900-$16,500
8yrs @ 7.99%
$140/mo
15yrs @ 9.99%
$106/mo
Monthly figures on the starting price, the whole price financed, on approved credit. The lender sets the final terms. How financing works
Get your price in writing
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5.0 stars across 1,132 reviews
Two of our heating technicians in a Northern Virginia basement. The same team tunes up, repairs and replaces boilers.
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
A new boiler runs $9,900 to $16,500 installed, the range of our own boiler replacements; a condensing or combi boiler lands at $12,782 to $16,500. A tune-up is $99 a system.
High-efficiency condensing boiler or combi boiler, installed
$12,782 to $16,500
or $213/mo at 0% APR for 60 months
Cast iron boiler on the chimney, replaced like for like, installed
$9,900 to $13,690
or $165/mo at 0% APR for 60 months
Boiler tune-up, one system
$99
Boiler repair diagnostic visit
$99
Monthly figures: 60mo @ 0% APR on each starting price, the whole price financed, on approved credit. Longer plans lower the payment and cost more in total. The lender sets the final terms. How financing works
A repair starts with the $99 diagnostic. If the fix is a circulator pump, a valve or an expansion tank, you get that price in writing before we start, and you decide.
Want a closer number before anyone comes out? The boiler estimator asks a few questions about yours and shows the range for that job.
What’s different in Centreville
Centreville built most of its houses in the 1980s and 1990s, about seven in ten of the owner homes, with 1990 the typical year. Those houses were built around furnaces and ducts, which leaves the hot water boiler as Centreville’s outlier, usually in one of the older houses from before 1980, about one in ten of the town’s owner homes.
Close to three in four owner homes here heat with gas, and so do the boilers we’d meet. On a boiler that’s been running since the 1980s, the parts around it usually go first: the circulator pump that moves the water, the zone valves, the expansion tank that keeps the pressure steady. Each of those is a repair, priced in writing after the $99 diagnostic.
When a Centreville boiler does need replacing, the venting decides most of the job. A new cast iron boiler can go back on the existing chimney; going condensing means a new vent through the side of the house and a price of $12,782 to $16,500, and in a 1980s house whose chimney hasn’t been looked inside in years, that can be the cleaner answer. Fairfax County names the boiler outright among the gas appliances that need a permit to replace, even like for like, and a chimney vent certification goes with any fuel-burning swap, one more reason the chimney question comes first.
Close to half the owner homes here are townhouses, and in a townhouse the boiler sits in one small utility room beside the tank that makes the hot water. A wall-hung combi frees that floor space. About one in seven owner homes is a condo, where a boiler may belong to the building, so the association is the first call. For any of them, the $99 tune-up in September or October reads the system pressure, tests the relief valve and listens to the pump while it runs.
By the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
What it’s telling you
When the neighbors all have furnaces, the sounds a boiler makes can go unexplained for years. A rumble like a kettle, a relief valve leaving drips on the floor, a radiator warm only at its base: call about any of them in the fall, before January makes it urgent. Fairfax County Fire and Rescue names a faulty gas furnace or water heater as a carbon monoxide source and wants a CO alarm on every floor; a gas boiler belongs on that list too.
Close view of a SwiftPro boiler installation in Northern Virginia showing the expansion tank, automatic air vent, fill valve and the vent connector into the chimney.
Safety and paperwork
Fairfax County requires a permit to replace any gas appliance, even like for like: a gas water heater, furnace or boiler. Replacing a fuel-burning appliance also needs a chimney vent certification. Source.
Fairfax County lists replacing a heating or cooling system as mechanical permit work. 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.
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.
Our Virginia Class A contractor license, 2705192276, is on the side of the van.
Choosing who works on it
Questions to ask anybody who quotes you, us included.
Ask whoever comes out. On a hot water boiler the answer should start at the pressure gauge, then the tank that cushions the pressure and the pump that moves the water, not just the burner.
A hot water boiler is half heating system (the burner, gas valve, flue and controls) and half plumbing (the water loop, circulator pumps, expansion tank, relief valve and zone valves). We hold a Virginia Class A license and run separate heating and plumbing teams, so each half gets a tech who does that trade every day.
A new boiler can stay on the chimney or vent out the wall in plastic pipe. A good quote says which, and whether the chimney needs a liner, because that’s where two quotes for the same boiler usually split.
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.
…I had the pleasure of working with Efrain and Alex last year on a Boiler heater. The quality of work and total professionalism contributed 100% to my decision…
Questions
Often, when the hot water needs are modest. One wall-hung box would replace both the boiler and the separate tank, and a combi runs $12,782 to $16,500 installed, with the venting going out through the wall.
Age alone doesn’t decide it. If the boiler’s own heat exchanger or cast iron sections are leaking, it’s a replacement; if it’s a pump, a valve or the expansion tank, it’s a repair, and the $99 diagnostic sorts one from the other.
No. We work on hot water boilers, the kind that heat radiators or baseboard, on natural gas or propane. If yours is steam or burns oil, we’ll tell you on the phone, and a switch to a heat pump or a gas or propane boiler is ours to price.
Ready when you are
Call any time: we run 24/7 emergency service. Or send the form at the top. A tune-up is $99, a repair starts with the $99 diagnostic, and a new boiler 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 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.