Open 24/7 for emergencies
Boiler work in Aldie is rare in a town of forced air, but the old village keeps them. Tune-ups are $99, diagnostics $99, and new units $9,900 to $16,500.
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 Aldie
More than nine in ten owner homes in Aldie went up after 2000, and the median year is 2013. In a town that young, a hot water boiler is the exception, not the rule. Most of these houses heat with forced air. When we do find a boiler here, it is usually in the older stock, like the historic village along Route 50 or the few pre-2000 homes. Those units have been running for decades, often without a recent look, and they are the ones that need a check before winter hits.
Gas heats about 78 percent of owner homes here, so most boilers burn natural gas. The vent setup tells you the type: a condensing unit pushes exhaust out a wall in white plastic pipe, while a cast iron unit vents up a chimney in metal pipe. In the historic village along Route 50, exterior changes need review. A through-the-wall vent on a visible side may need approval. We check the vent path and the liner before starting, because a blocked or corroded vent is a common reason a boiler shuts down.
That makes a like-for-like swap simpler. If you are moving the unit or changing the size, the permit process takes longer. If the boiler is in a condo or townhouse, check your association rules first. Some communities require approval for any mechanical change, even if the vent stays the same.
A dripping relief valve usually means pressure is near 30 psi, often from a tired expansion tank or a stuck fill valve. If the top of the radiator is cold while the bottom is hot, air is trapped in the loop. A loud rumble from inside the boiler, like a kettle about to boil, is kettling, and it points to scale or sludge in the heat exchanger. These issues show up more often in the older Aldie boilers found in the historic village or pre-2000 homes. A tune-up at $99 verifies the pressure, tests the expansion tank, and checks the circulator motor. If the unit is past fifteen years old, the cost of a major repair can approach the price of a replacement. We provide the diagnostic numbers and the repair quote before any work starts, so you can compare the options against a new $9,900 to $16,500 system. This helps you decide if fixing the old unit makes sense for your specific setup and budget.
By the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
ZIP 20105 as a whole: every Aldie address, inside Stone Ridge and out.
What it’s telling you
In a town where most homes are from the 2010s, a boiler is often the original. It has no recent service history, and its parts are wearing out. A tune-up finds the small issues before they become a cold house in January. It is the cheapest way to keep an old system running safely.
An aging Peerless cast iron boiler in a Northern Virginia basement, chimney vented, on a SwiftPro service call.
Safety and paperwork
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.
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.
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 if they specialize in hot water systems, not just forced air. Since 93% of Aldie homes are new, boiler experience is rare here.
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 Aldie: Haymarket, Middleburg, Ashburn, Catharpin and Chantilly.
Questions
It is uncommon here because most Aldie homes use forced air. We handle the specific needs of these systems, unlike teams that focus only on furnaces.
If your Aldie home has ducts for cooling, a gas furnace or heat pump on those lines is a valid option we can price next to a new boiler. If it does not, a boiler replacement is often the simpler path. We lay out the costs for both so you can choose what fits your specific setup.
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 Aldie 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.