Water heater repair and replacement in Triangle.
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.
- Permit and expansion tank included
- Tank or tankless
- Dedicated plumbing team
Get your water heater priced
One Triangle address in eight takes a Town permit, and the low ground by Little Creek floods.
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.
Triangle houses, by the numbers
From the Census Bureau’s 2020 to 2024 survey. Median year built and heat count owner-occupied homes only.
Triangle
- Median home built2003 Census
- Built before 1980about 4 in 10 Census
- Built since 2000about 5 in 10 Census
- Most homes aresingle-family houses, about 6 in 10 Census
- Heated withgas, about 8 in 10 Census
- Rentedabout 4 in 10 Census
- Most houses here heat with gas, so most water heaters are gas tanks, and replacing one takes a permit even like for like.
- A lot of original water heaters here went in during the 2000s, and a tank that age is past the years most of them last.
What a new water heater costs in Triangle.
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
- Gas or propane tank, installed$3,379 to $5,485
- Power vent tank, installed$5,957 to $7,494
- Tankless, installed$8,886 to $10,486
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 a failing water heater in Triangle usually does.
The pilot started going out after a new furnace
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.
The pilot won’t stay lit
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.
Water on the floor around it
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.
After a storm in Triangle, check the water heater.
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.
Water reached the burner or the gas controls
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.
An electric tank sat in water
Shut its breaker off at the panel, but only from somewhere dry. The elements and the thermostats get checked before it heats again.
Water around it after the rain stopped
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.
Who signs off on a new water heater in Triangle.
Prince William County
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.
How to pick the best water heater installer in Triangle.
Questions worth asking anybody who quotes you, us included.
Which permit office will they file with?
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.
Is the permit in the price?
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.
Is there an expansion tank in the quote?
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.
Will they tell you when a repair will do?
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.
What our customers say.
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!!
5.0 stars across 884 Google reviews. Read them on our reviews page.
Water heater questions from Triangle.
Will a gas water heater keep working when the power goes out?
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.
I’m in base housing at Quantico. Will you replace my water heater?
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.
How much is a new water heater in Triangle?
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.
Water heaters in the towns next door.
- Water heaters in Dumfries
- Water heaters in Woodbridge
- Water heaters in Lorton
- Water heaters in Fort Belvoir
- Water heaters in Fairfax Station
More from SwiftPro in Triangle
Tell us how old yours is.
Call, or book online and pick a window. 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 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 884 Google reviews. SwiftPro maintains a dedicated HVAC team and a dedicated plumbing team.
SwiftPro Heating, Cooling & Plumbing, 4230 Lafayette Center Dr, Suite N, Chantilly, VA 20151, (703) 997-9757. Book online, read our reviews, or see every town we serve.