Open 24/7 for emergencies
Stafford boilers are scarce among its heat pumps; a tune-up costs $99, and a 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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Rather talk now? (703) 997-9757
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 Stafford
Across ZIPs 22554 and 22556 the Census counts 24,011 owner homes. Electricity heats close to six in ten of them, mostly with heat pumps, gas about three in ten and propane fewer than one in ten. The typical owner’s house went up in 1996, and only about one in six predates 1980, so a hot water boiler in Stafford is usually in one of those older houses. Stafford’s water comes from Smith Lake and Lake Mooney, treated at two County plants.
Stafford County treats a gas or propane boiler replacement as appliance permit work. The Building Division, part of Development Services on Courthouse Road, takes the application, and fees are due when you apply. A homeowner can sign the application with a notarized affidavit, or the contractor can sign it. A no-heat emergency can be fixed first and filed after, since Virginia’s code gives the County until the end of the next working day to receive the application.
Of every hundred owner homes in Stafford, about 72 are detached and 15 are townhouses. A detached house usually gives its boiler a basement corner of its own, while a townhouse squeezes it into a closet beside the water heater, the spot where a wall-hung combi at $12,782 to $16,500 installed pays off.
A cast iron boiler kept on its chimney is the cheaper side of the $9,900 to $16,500 range, and the chimney it uses has often served a water heater for decades too. When the boiler moves to a plastic wall vent instead, the water heater left alone on that chimney needs its flue looked at as part of the same job.
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 |
|---|---|---|---|---|
| Aquia Harbour | 1984 | single-family houses, nearly all | electricity, nearly all | Mostly heat pumps; a boiler is the exception. |
| Stafford Courthouse | 2005 | single-family houses, about 4 in 10 | gas, about 6 in 10 | Built since 2000, almost all forced air. |
By the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
ZIPs 22554 and 22556 as a whole: every Stafford address. The Census places in the table hold about one in seven of these homes.
What it’s telling you
In an older Stafford house the boiler and the water heater often vent up one chimney. When either one changes, the other’s venting changes with it, and the written price should say how. A chimney liner may be part of that answer.
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.
Choosing who works on it
Questions to ask anybody who quotes you, us included.
Stafford lets the homeowner sign with a notarized affidavit or the contractor sign it. Ask the installer which they expect, so the application isn’t the thing that holds up the job. Either way, the County collects its fee at application.
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…
Where we work
Next door to Stafford: Fredericksburg, Quantico, Triangle, Dumfries and Midland.
Questions
Some do, usually sharing a closet with the water heater. About one in seven owner homes here is a townhouse, and in those a combi often replaces both appliances.
Fix it when the failure is a part around it, such as the circulator, a zone valve or the expansion tank. Replace it when its own heat exchanger leaks. The $99 diagnostic settles which.
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 Stafford 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.