Open 24/7 for emergencies
A new gas water heater in Triangle runs $3,379 to $5,485 installed, permit included. Three in four owners here heat with gas, and most tanks burn it too.
Price range
$3,379-$5,485
8yrs @ 7.99%
$48/mo
15yrs @ 9.99%
$36/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 plumbers wheeling a new water heater up a Northern Virginia walkway, the van at the curb.
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 plumbers, our own trucksNobody here is a subcontractor with a magnet on the door
The price is settled before the workYou see the number in writing before anything is taken apart
What it costs
Installed, from our water heater estimator, which is the price book. Everything is in the number: the permit and the inspection, the expansion tank, the drain pan, hauling the old one away, and the labor.
Electric tank, installed
$2,757 to $5,493
or $46/mo at 0% APR for 60 months
Gas or propane tank, installed
$3,379 to $5,485
or $56/mo at 0% APR for 60 months
Power vent tank, installed
$5,957 to $7,494
or $99/mo at 0% APR for 60 months
Tankless, installed
$8,886 to $10,486
or $148/mo at 0% APR for 60 months
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
How the house vents picks the row; where you land inside it is the tank size and the warranty. A hybrid heat pump water heater is quoted at the visit, never from a page.
Keeping the one you have? A yearly water heater flush slows the sediment down: $99 right now, normally $199. A tankless descale is $300, regularly $350. Or get the flush every year with Comfort+ membership, $199 a year, along with a dryer vent cleaning, a sewer camera inspection and heating and cooling maintenance visits.
What’s different in Triangle
Triangle has no town hall, so a water heater permit here normally comes from Prince William County. The County asks for one on every gas or propane tank, even a straight swap; an electric tank traded for one of equal size, in the old one’s spot, needs none. By the County’s address map, about one home with Triangle mail in eight sits inside the Town of Dumfries, the Port O’Dumfries townhouses and the Townsquare Court apartments among them, and there the Town’s building department issues the permit.
In a 1950s house around Graham Park, a gas water heater usually stands near the furnace, sometimes sharing its chimney. In the subdivisions platted from 2001 to 2004 it’s more likely in a basement or a garage.
Little Creek crosses Route 1 in Triangle, and the National Weather Service gauge there notes that at 7.54 feet the corner of Fuller Heights Road and Fuller Road starts to flood, with three feet of water at minor flood stage. Storm records list a car under water at Route 1 and Fuller Road in June 2018, and Route 1 closed by flooding near Locust Shade Park in July 2017. On that low ground, check the heater after every hard rain. If a flood ruins it, Virginia’s building code lets the new one go in right away, as long as the permit application follows by the close of the next working day.
Quantico’s weather station, 3.8 miles off, logs freezing nights on roughly 76 dates a year, and the Arctic stretch at the end of January 2026 pushed wind chills below zero along I-95. A heater in a garage with no heat, or supply pipes running up an outside wall, is where a freeze shows first: a split fitting, a cracked valve, water on the floor after the thaw.
By the numbers
From the Census Bureau’s 2020 to 2024 survey. Median year built and heat count owner-occupied homes only.
What you’d notice
In a 1950s Graham Park house the water heater commonly vented up the same chimney as the old furnace. Once a high-efficiency furnace vents out the side, the heater is left alone on a flue meant for two and may not draft well; exhaust spilling at the top of the tank can snuff the flame. Shut it off and call.
On a gas tank that’s usually the thermocouple or the gas valve, both repairs. A burner that lights but smells of exhaust is different: shut it off and call.
A drip from a valve can be fixed. Water from the tank itself can’t; once the lining goes, the only fix is a new heater, and sooner beats later.
If the basement took water
A water heater usually sits on the lowest floor of the house, so it’s one of the first things standing water reaches. Three checks, then call us.
Leave it off and don’t relight it. The warning label on a gas water heater says not to use it if any part has been under water, and to have a service technician replace the gas control.
Shut its breaker off at the panel, but only from somewhere dry. The elements and the thermostats get checked before it heats again.
Mop it up and look again in an hour. Water that comes back with no rain is the tank or a valve, not the storm.
Call us after a storm and we’ll check it: the gas control or the elements, the burner, the venting and the drain pan. If it has to be replaced, you get the price in writing before anything comes out.
Permits and pressure
Prince William Water says the pressure reducing valve is the homeowner’s to install and keep up, that the plumbing code recommends one where pressure runs 80 psi or more, and that pressure rises with the height difference between your house and the water tank serving it. Source.
Our Virginia Class A contractor license, 2705192276, is on the side of the van.
Choosing who installs it
Questions worth asking anybody who quotes you, us included.
A Triangle address can answer to Prince William County or the Town of Dumfries, and the ZIP code won’t tell you which. Ask the installer before anything gets disconnected.
A gas water heater always needs a permit, an electric one often does, and skipping it tends to surface when the house sells. Ask whether the quote includes it and the inspection.
Most houses here have a check valve or a pressure reducer on the incoming line, so the heated water has nowhere to go. An expansion tank gives it somewhere, and leaving it out is how quotes come in low.
A thermocouple, an element or a valve is a repair, not a new heater. A good plumber says so, and saves the replacement talk for a leaking tank.
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.
This Company installed a tankless water system!!! They were great!!! Very Professional & Efficient & they Cleaned up & took out the old water tank! I would highly recommend them!!
Where we work
Next door to Triangle: Quantico, Dumfries, Woodbridge, Stafford and Lorton.
Questions
A standard gas tank with a standing pilot usually keeps heating, since it needs no electricity. A power vent tank and a tankless both need power for their fans and controls, so they stop when the lights do. Weigh that before you choose.
No. Family housing aboard Marine Corps Base Quantico is Liberty Military Housing’s to maintain, so call Liberty or the base housing office. Off base, anywhere with Triangle mail, we will.
Installed, with the permit, the expansion tank, the pan and the haul-away: an electric tank $2,757 to $5,493, a gas or propane tank on the flue you have $3,379 to $5,485, a power vent tank $5,957 to $7,494, and a tankless unit $8,886 to $10,486. The estimator gives your exact number in about a minute.
Ready when you are
Call, or send the form at the top. The age on the label and what it’s doing tell us most of what we need, and you get the price before anything comes out.
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 Triangle 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.