Water heater repair and replacement in Sterling.
Water heater repair and replacement in Sterling, from Sterling Park to Cascades and Lowes Island, with the permit and the expansion tank 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
Sterling’s water heaters follow the heat: electric in Countryside, gas in Cascades.
Sterling heats two ways, and the water heater usually matches the furnace or heat pump. Sterling proper, south of Route 7, is just over half electric heat, and Countryside is close to eight in ten. Cascades runs about eight in ten on gas, Lowes Island about seven in ten. So a Sterling replacement is often an electric tank, $2,757 to $5,493 installed, and in the gas neighborhoods a gas tank on the flue you already have, $3,379 to $5,485.
The gas side has a permit wrinkle. Since October 2025, Loudoun County reviews plans on gas permits for alterations and additions, and only a replacement that keeps the old heater’s BTUs and spot skips that step. A tankless burns several times the BTUs of a gas tank at full fire, so trading one for the other in Cascades or Lowes Island falls outside that exemption and goes through plan review, which the county puts at about 10 days after the application is complete. A straight tank swap skips it.
Where it sits depends on the decade. In a 1960s or 70s house around Sterling Park it’s usually in a utility room or the basement, beside the furnace or air handler. In the 1980s and 90s townhouses of Sugarland Run, Cascades and Lowes Island it’s as likely to be in a closet on a finished floor, and a leak there finds the drywall before anyone finds the leak.
Most Sterling homes went up between 1980 and 2000, so the original tanks are long gone and plenty of their replacements are reaching their own teens. The label gives the date. If yours is past ten and has started to rumble or weep at the fittings, price the replacement now, while you still get to pick the day.
What’s heating the water across Sterling.
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 |
|---|---|---|---|---|
| Sterling | 1979 | single-family houses, about 5 in 10 | electricity, about 5 in 10 | Mostly electric tanks, no flue. |
| Lowes Island | 1996 | single-family houses, about 6 in 10 | gas, about 7 in 10 | Tanks in closets and upstairs rooms: the pan matters. |
| Cascades | 1996 | townhouses, about 4 in 10 | gas, about 8 in 10 | Gas tanks on their second or third replacement. |
| Sugarland Run | 1983 | single-family houses, about 6 in 10 | gas, about 5 in 10 | Gas tanks on their second or third replacement. |
| Dulles Town Center | 1998 | condo and apartment buildings, about 5 in 10 | gas, about 9 in 10 | Condo closets: gas or electric tanks, over a pan. |
| Arcola | 2017 | townhouses, about 5 in 10 | gas, about 8 in 10 | Builder tanks from the 2010s, reaching the age tanks give out. |
| Oak Grove | 2005 | townhouses, about 8 in 10 | gas, about 9 in 10 | Original 2000s tanks, many past their years. |
Sterling houses, by the numbers
From the Census Bureau’s 2020 to 2024 survey. Median year built and heat count owner-occupied homes only.
Sterling
- Built before 1980about 2 in 10 Census
- Built since 2000about 2 in 10 Census
- Most homes aresingle-family houses, about 4 in 10 Census
- Heated withgas, about 6 in 10 Census
- Rentedabout 3 in 10 Census
- Where the heat is electric the water heater usually is too, and that’s the simpler swap: no flue and no gas line to deal with.
- Townhouse water heaters often sit in a closet or an upstairs utility room, where the drain pan and its line are what keep a leak off the ceiling below.
What a new water heater costs in Sterling.
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 Sterling usually does.
A rust ring in the pan
In a Sterling townhouse the water heater often shares a closet with the air handler on a finished floor. Rust in the pan or a soft spot in the ceiling below is the early warning; call before it becomes a drywall job.
Warm, never hot, on an electric tank
An electric tank has two elements. When one fails the water still warms, just never all the way; it’s a common, fixable part.
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 Sterling, 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 Sterling.
Loudoun County
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.
A burst tank doesn’t wait on paperwork: under Virginia’s building code the replacement can start first, as long as the permit application reaches Loudoun County by the end of the next working day. Source.
Loudoun Water’s rules put the pressure regulator entirely on the customer. Source.
How to pick the best water heater installer in Sterling.
Questions worth asking anybody who quotes you, us included.
Do they ask whether you’re gas or electric before they quote?
In Sterling the answer changes from one neighborhood to the next, and the two are different jobs at different prices. A number given without asking is a guess; ours starts from what’s in your closet.
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.
Moises and Oscar responded quickly to our need for a new water heater. They came through with a quick and a professional install at a reasonable price. I trust Tyler, Moises, and the team at SwiftPro with my hvac and plumbing needs.
5.0 stars across 884 Google reviews. Read them on our reviews page.
Water heater questions from Sterling.
Is replacing an electric water heater in Sterling simpler?
Usually. There’s no flue, no gas line and no gas permit to think about, and in Sterling proper and Countryside it’s the common kind. The bigger choice in an electric house is whether to go back with a tank or try a hybrid heat pump water heater, which is quoted at the visit, never from a page.
Can a Cascades or Lowes Island house go tankless?
Usually, when the gas line is big enough and there’s an outside wall to vent through, and it runs $8,886 to $10,486 installed. We check the line and the wall on the visit before we quote it, and if either one says no, we tell you then.
Our furnace went high-efficiency. Does that affect the gas water heater?
It can, in an older Sterling Park house that heats with gas. The old furnace and the water heater often shared one flue, and a high-efficiency furnace leaves through its own plastic pipe, so the water heater is left alone in a flue sized for two. That gets checked for draft before a new tank goes on it.
How much is a new water heater in Sterling?
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 Ashburn
- Water heaters in Herndon
- Water heaters in Reston
- Water heaters in Great Falls
- Water heaters in Chantilly
More from SwiftPro in Sterling
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 Sterling 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.