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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.
Price range
$2,757-$5,493
8yrs @ 7.99%
$39/mo
15yrs @ 9.99%
$30/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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Water heaters in Clifton, 20124: electric, propane or natural gas, on a well or Fairfax Water, replaced from a price book with the permit in it. The water heater estimator gives your exact number.
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 Clifton
About half the owner homes in the Census tract around the town heat with electricity, and where nothing in the house burns fuel the water heater is usually electric too: $2,757 to $5,493 installed. Where the heat is propane the water heater often is too, and on our book a propane tank sits on the same row as natural gas, $3,379 to $5,485 on the flue you already have. The 1980s subdivisions around Springstone Drive are mostly natural gas, about 85 percent of owners, with the tank standing beside the furnace.
On a well, the water decides how hard the tank works. When the Town asked, the county Health Department called its well water relatively good, with some high iron, and iron settles in the bottom of a tank along with the rest of the sediment. If the hot water runs orange and the cold doesn’t, the tank itself is rusting; if both run orange, it’s the well, and the fix is treatment ahead of the heater, not a new heater.
Big houses change the sizing. Six in ten homes in 20124 have nine rooms or more, and a house that size often has a bath far from the tank or a soaking tub that empties a 50-gallon heater in one fill. Before we price one, we ask how many people shower in the morning and how far away the farthest bath is, then size the tank or the tankless unit to that.
Inside the town line, a gas or propane replacement still goes through Fairfax County, permit and chimney vent certification even like for like, but the county won’t move the application until the Town’s approval is uploaded. A tankless unit that vents through a new hole in an outside wall changes the exterior, and in Clifton’s historic district that’s the Architectural Review Board’s call before it’s ours.
By the numbers
From the Census Bureau’s 2020 to 2024 survey. Median year built and heat count owner-occupied homes only.
Clifton mail outside the town: five- to ten-acre lots in the Occoquan watershed on Clifton, Compton and Yates Ford Roads, mostly on septic, and the 1980s subdivisions off Springstone Drive and Union Mill Road on county sewer.
ZIP 20124 as a whole, the Town included: its own homes are too few for steady Census figures.
What you’d notice
On a Clifton well with iron in it, discolored water from both taps is the well. From the hot side alone, it’s the tank: a spent anode or rust inside the lining. Run a little out of the drain valve at the bottom; rusty grit there means the tank is near the end.
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
Inside the town line a gas or propane water heater or furnace swap still takes a Fairfax County permit, even like for like, with a chimney vent certification. Fairfax County won’t move the application until the Town of Clifton’s own approval is uploaded to it. Source.
The Town’s 2009 plan says its houses draw from private wells, apart from five small public wells that serve a handful of churches, businesses and public buildings. On a well no water utility sets the pressure: the pump’s pressure switch and the pressure tank do, so a pressure reducing valve is the exception here. Source.
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.
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 propane tank, an electric one on a big lot and a natural gas one in a 1980s subdivision are three different installs. The water matters as much: iron or a softener on a well changes the anode choice and the flush schedule. A price that skips both questions was written for somebody else’s house.
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.
Alex came out today to check out my water heater. He was on time and was super helpful in answering my questions. Would definitely have SwiftPro out again.
Where we work
Next door to Clifton: Fairfax Station, Burke, Manassas, Centreville and Fairfax.
Questions
Yes, and our book prices it the same as natural gas: $3,379 to $5,485 installed on the flue you have, or $5,957 to $7,494 for a power vent tank that exhausts out a side wall. The burner and gas valve are set up for propane, and your supplier, not Washington Gas, keeps the tank in the yard filled.
Usually not. A reducing valve is for houses fed from Fairfax Water’s mains, where street pressure can run high. On a well, the pump’s pressure switch and the pressure tank set the house pressure, commonly somewhere around 40 to 60 psi, and that gauge is the one we read before changing anything.
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 Clifton 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.