Open 24/7 for emergencies
Nokesville boilers, on propane or gas: we tune them for $99 and put in new ones at $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 Nokesville
Electric heat leads in 20181: about seven in ten owner homes in the village and more than half across the ZIP, mostly heat pumps. Of the 3,076 owner homes in the ZIP, 597 heat with propane and 459 with natural gas, and in the village around Aden Road propane outnumbers gas about three to one. So a hot water boiler in Nokesville is more likely fed by a tank in the yard than by a gas main.
The village houses are the old ones: the typical owner home there dates from 1970, and about six in ten predate 1980, against 1989 for the ZIP as a whole. Those older village houses are the likeliest place for a cast iron boiler on a chimney, and the swap there is either another cast iron boiler on the same chimney or a wall-hung condensing boiler at $12,782 to $16,500 installed, venting through the side wall in plastic pipe.
Nokesville has no town hall of its own; the permit for a gas or propane appliance swap, even like for like, comes from Prince William County. A boiler that dies in a cold snap can be replaced first under Virginia’s code, as long as the County has the application by the end of the next working day. The County’s fire and rescue department asks for a CO alarm on each level and outside the bedrooms, tested once a month.
A propane tank in Nokesville usually feeds more than the boiler, often the water heater and the range too, so a no-heat morning is worth a glance at the gauge before a service call. A new propane boiler is converted and set to propane’s gas pressure, then leak-checked, before it fires the first time.
By the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
ZIP 20181 as a whole: every Nokesville address, the village included.
The Census Bureau’s Nokesville place: the village and the land right around it.
What it’s telling you
A boiler that fires, shuts off and fires again a few minutes later is often oversized for the house or fighting a bad setting, and on propane those short runs burn fuel you pay for by the gallon. A $99 visit sorts out whether it’s a control, a sensor or the size.
A new Weil-McLain gas boiler installed by SwiftPro in a Northern Virginia basement, with copper near-boiler piping and a bank of Taco zone valves feeding the heating loops.
Safety and paperwork
Prince William County requires a permit to replace a gas or propane furnace or a gas appliance such as a water heater, even like for like. Replacing an electric water heater with one the same size in the same spot needs no permit. Source.
Prince William County lists any work that alters a home’s heating and air conditioning as permit work, but swapping an electric furnace, heat pump or air conditioning condensing unit for the same type of unit in the same spot is an ordinary repair that needs no permit. Source.
Prince William County Fire and Rescue lists furnaces and water heaters among the household sources of carbon monoxide, and says to put a CO alarm outside each sleeping area and on every level of the home and to test it monthly. Source.
Prince William County Fire and Rescue says to have a qualified technician inspect the heating system and chimneys every year, to make sure nothing blocks the fumes from venting out of the house. 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 for a heat loss calculation, the room-by-room math that says how much heat the house needs. A house that has had new windows, insulation or an addition since the first boiler went in may need a smaller boiler, or a bigger one, than the label on the old one says.
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
We do. We tune propane boilers for $99, and gas ones too out past the village where the gas main runs; repairs start with the $99 diagnostic.
If the house already has ducts, a heat pump is the common Nokesville choice, and we can price one next to a new boiler. If the heat comes from radiators or baseboard with no ducts, a new boiler keeps the system the house was built around, and it’s usually the smaller job.
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 Nokesville 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.