Open 24/7 for emergencies
A new boiler runs $9,900 to $16,500 installed, a tune-up is $99 a system, and a repair gets a written price after the $99 diagnostic.
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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Boiler repair and replacement in Chantilly covers 20151 and 20152. The county line changes the permit rules you need to follow.
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 Chantilly
We don’t see boilers in Chantilly as often as in neighboring towns. Water heaters come up more frequently in our local work. In 20151, the median home was built in 1987, and about six in ten are single-family. Most of those homes use gas furnaces or heat pumps. If you have a hot water boiler heating radiators or baseboard, it is likely in one of the older homes or a specific layout that favored hydronic heat. The service is the same, but the context is different here than in most of Northern Virginia. We treat these jobs with the same care, even though they are a smaller share of our local calls.
The county line matters for permits. In 20152, South Riding is in Loudoun County. This difference affects how we schedule the work and what paperwork is ready before the tech arrives. We handle the applications so you don’t have to guess which office to call.
If your boiler is gas or propane and heats radiators or baseboard, we can repair it, tune it up, or replace it. A tune-up in Chantilly costs $99 a system. A repair begins with a $99 diagnostic. If you are considering a switch from an oil-fired system, which is rare here, or moving to a heat pump, that is a different project we can price. If your system is a hot water boiler on gas or propane, we are the right fit. We will walk you through the options and the costs before any work begins.
In 20152, Loudoun Water points to Fairfax Water’s data for hardness figures. A tune-up includes checking the heat exchanger and the burner for signs of scale or soot. If you have a CO alarm on every floor, as Fairfax County Fire and Rescue recommends, you are ahead of the curve. If a boiler quits in winter, Virginia law allows emergency replacement to start first, with the permit application filed by the next working day. We can get that process moving quickly.
Neighborhood by neighborhood
Census figures for the owner-occupied homes in each place, and what a boiler call there usually meets.
| Place | Median home built | Most homes are | Heated with | What a boiler call usually meets |
|---|---|---|---|---|
| South Riding | 2006 | single-family houses, about 5 in 10 | gas, about 8 in 10 | Built since 2000, almost all forced air. |
| Chantilly | 1987 | single-family houses, about 6 in 10 | gas, about 5 in 10 | 1980s and 90s houses, mostly forced air; boilers in the older ones. |
By the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
What it’s telling you
In Chantilly, most homes use gas furnaces or heat pumps. A boiler is less common, so the parts and labor may not be as readily available locally. We stock common parts for gas and propane boilers, but for specialized hydronic components, we may need to order. This can affect timing.
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.
Loudoun County requires a permit to swap a gas water heater or furnace. Since October 2025, a replacement that keeps the same BTUs in the same spot needs no plans. 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 works on it
Questions to ask anybody who quotes you, us included.
In Chantilly, the county line splits the town. Fairfax County requires a permit and chimney certification for gas boiler replacements. Loudoun County has a no-plans rule for like-for-like swaps since October 2025. A tech who doesn’t know this will waste time on the wrong paperwork. Ask which office your address files with, so the right permit is filed the first time.
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.
Arrived within an hour on a Sunday morning and provided great service.
Called SwiftPro around 5 am and their electronic system scheduled an appointment for us same day.
Replacement for my broken gas water boiler was professionally done and in a timely manner. The technicians knew exactly what they were doing.
Where we work
Next door to Chantilly: Centreville, Catharpin, Herndon, Aldie and Oakton.
Questions
Yes, we work on gas and propane hot water boilers in both 20151 and 20152. The mechanical work is identical, but the paperwork differs. Fairfax County requires a permit and chimney vent certification for gas appliance swaps. Loudoun County has specific rules for like-for-like replacements. We file the correct application for your side of the county line so you don’t have to navigate two different offices.
If it is a small part, like a circulator or a valve, yes. If the heat exchanger is cracked or the boiler is over twenty years old, replacement is usually better. In 20151, the median home is from 1987, so some boilers are nearing the end of their life. In 20152, homes are newer, so boilers there are less likely to be original. We will give you a written price after the $99 diagnostic so you can decide with both options in front of you.
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 Chantilly 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.