Water heater repair and replacement in Vienna.
Water heaters in Vienna, town and county side, repaired or replaced with the Fairfax County permit and the expansion tank already in the price.
A new water heater installed with the permit runs $2,757 to $5,493 for an electric tank, $3,379 to $5,485 for gas or propane and $8,886 to $10,486 for tankless. The water heater estimator gives your exact number.
- Permit and expansion tank included
- Tank or tankless
- Dedicated plumbing team
Get your water heater priced
Gas tanks in the basement, Town water at 5 to 10 grains: Vienna’s water heaters.
About eight in ten owner homes inside the Town of Vienna heat with gas, and in the houses built before 1980, about two thirds of the town, the water heater is usually a gas tank in the basement or utility room beside the furnace, sharing its chimney and long past the one the house started with. If a storm ever puts water on that basement floor high enough to reach the burner, leave the heater off and call us to check it before it’s relit.
The water inside the town is the Town of Vienna’s, a blend it buys from Fairfax Water and the Washington Aqueduct, and its 2025 report calls it moderately hard to hard at 5 to 10 grains per gallon. Where the bill comes straight from Fairfax Water, its 2025 figures ran 3 to 10.8 grains per gallon. Either way that’s enough calcium to lay sediment on the bottom of a tank every year, and it’s what you hear rumbling when the burner fires under it.
The houses built since 2000, about a quarter of the town’s, ask more of a water heater: more bathrooms, a big tub, sometimes two tanks or a tankless unit. A tankless in this water wants descaling on a schedule, $300 for the descale right now, regularly $350, and a new one runs $8,886 to $10,486 installed.
On the county side, Wolf Trap is nearly all single-family houses with a 1980 median, most of them heated with gas, so the tank there is rarely the first one the house had. On Fairfax Water the pressure past the meter is the owner’s to manage, and a high reading is hard on a tank’s relief valve and fittings, which is one reason every replacement we price includes an expansion tank.
What’s heating the water across Vienna.
Census figures for each place, and the water heater that usually goes with its houses. Median year built and heat count owner-occupied homes only.
| Place | Median home built | Most homes are | Heated with | The water heater you usually find |
|---|---|---|---|---|
| Wolf Trap | 1980 | single-family houses, nearly all | gas, about 7 in 10 | Gas tanks on their second or third replacement. |
| Vienna | 1972 | single-family houses, about 8 in 10 | gas, about 8 in 10 | Gas tanks, often sharing a chimney with the furnace. |
Vienna houses, by the numbers
From the Census Bureau’s 2020 to 2024 survey. Median year built and heat count owner-occupied homes only.
The Town of Vienna
Nearly the whole town sits in 22180, which it shares with county streets toward Dunn Loring and Merrifield.
- Median home built1972 Census
- Built before 1980about 7 in 10 Census
- Built since 2000about 3 in 10 Census
- Most homes aresingle-family houses, about 8 in 10 Census
- Heated withgas, about 8 in 10 Census
- Rentedabout 2 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.
- In older houses the gas water heater often shares a chimney with the furnace, and a new high-efficiency furnace can leave it alone on a flue that’s too big.
The county side, around Wolf Trap
Vienna mail outside the town line: Wolf Trap and the Tysons edge in 22182, the Oakton side of 22181, Dunn Loring. The figures are Wolf Trap’s, the biggest piece.
What a new water heater costs in Vienna.
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 Vienna usually does.
A weak draft at the water heater
In an older Vienna house where the furnace went high-efficiency and now vents out the side, the gas water heater may be the last thing using the chimney. If its draft hood spills warm air, get the flue looked at before a new tank goes on it.
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 Vienna, 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 Vienna.
Town of Vienna
Inside the Town of Vienna, Fairfax County is the building official, so a gas water heater or furnace swap in town takes a Fairfax County permit, even like for like, and the county page adds that work in the town can need the Town’s own sign-off too. Source.
Fairfax County
Virginia lets emergency replacement work start first, with the permit application in by the end of the next working day. Source.
Fairfax Water promises 20 psi at the main and no uniform pressure, and the pressure reducing valve on your side of the meter is yours to buy and keep up. Over 80 psi, the Virginia Residential Code calls for one, and an expansion tank with it. Source.
How to pick the best water heater installer in Vienna.
Questions worth asking anybody who quotes you, us included.
Did they ask what the house has added since the last tank?
An older Vienna house with a finished basement bath or an addition may need more tank than it started with. A good installer asks how many showers run at once now before sizing the new one.
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.
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Water heater questions from Vienna.
Do I need a permit to replace a water heater in the Town of Vienna?
For a gas one, yes, and it comes from Fairfax County, which serves as the Town’s building official. The county also wants a chimney vent certification with any fuel-burning appliance. An electric one can need a permit too: the county lists the direct replacement of a water heater among the jobs that take one. Ours include the permit wherever one’s needed.
How long does a water heater last on Vienna’s water?
The label gives the build date. Most tanks in water this hard last a little over a decade, less if nobody has ever drained the sediment. If yours is past twelve and rumbling, get the replacement price before it picks the day: a gas tank on the flue you have runs $3,379 to $5,485 installed.
Tank or tankless in a rebuilt Vienna house?
It depends on the gas line and where it can vent. A big house with three full baths is where tankless earns its keep, because it doesn’t run out mid-shower; a tank is cheaper to put in, $2,757 to $7,494 against $8,886 to $10,486. We look at the gas meter and the vent path before pricing either.
How much is a new water heater in Vienna?
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 Dunn Loring
- Water heaters in Oakton
- Water heaters in McLean
- Water heaters in Fairfax
- Water heaters in Reston
More from SwiftPro in Vienna
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 Vienna 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.
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