Open 24/7 for emergencies
Waterford boilers run on propane, the fuel of more than half its homes: $99 to tune one, $9,900 to $16,500 to replace it.
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 Waterford
The Census finds no utility gas heat in ZIP 20197; propane heats more than half of the 575 owner homes and electricity about one in four. A Waterford boiler burns propane from a tank in the yard, and its gas pressure is set and read for propane, not natural gas. Propane heats more than half the owner homes here, so a Waterford boiler is likely a propane one. Oil still heats about one in six owner homes, and those burners are outside our work.
The typical house dates from 1996, yet roughly one in five is older than 1960 and a third older than 1980. In those older houses a hot water boiler on radiators or baseboard is a common setup, often in a cellar under a chimney that has served it for decades.
In the central village, most exterior changes need the County Historic District Review Committee’s approval before work starts. A condensing boiler’s plastic vent through a wall is an exterior change, so ask whether the vent can stay where it is; a cast iron boiler going back on the existing chimney avoids the review. Approval comes before work starts, so a failing boiler in the village is a reason to call early rather than late. The National Historic Landmark around the village is larger than the district and is an honorary designation.
For a Waterford house moving to high efficiency, a condensing or combi boiler costs $12,782 to $16,500 installed, and it runs off the same propane tank. With detached houses making up nearly every owner home here, each boiler has its own chimney or wall to vent through, and the written price should name the route, the propane line and any radiator flushing, so nothing gets decided on the day.
By the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
ZIP 20197 as a whole: every Waterford address, the village included. The Census place for the village alone has too few homes for steady figures.
What it’s telling you
That pairing usually means pressure is high and air is trapped. The valve opens to protect the boiler, and fixing the expansion tank and bleeding the air in October costs far less than a January replacement.
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
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 whether the quote keeps the existing chimney or needs the Historic District Review Committee’s approval for a new wall vent, and who takes that request to the committee.
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 Waterford: Paeonian Springs, Lovettsville, Hamilton, Leesburg and Purcellville.
Questions
More than in most Loudoun towns, given the village’s older houses. A propane boiler in the village gets its $99 tune-up checked against propane’s numbers, and any repair gets a written price once the $99 visit finds the fault.
In an older village house with radiators and no ducts, the heat pump route is ductless mini splits, while a new propane boiler keeps the radiators. The boiler estimator shows the boiler side of that comparison. The radiators stay either way if you choose a new boiler.
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 Waterford 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.