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Sump pump replacement in Vienna: $697 installed in your existing pit. A new pit, a battery backup, outside drain work or new wiring is extra.
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5.0 stars across 1,132 reviews
Two of our technicians in a basement mechanical room, beside the furnace and a gas water heater.
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
The same price as our sump pump replacement page: one flat number for a new pump in a pit that’s still sound, with what costs extra named right beside it.
Sump pump replacement, installed in your existing pit
$697
Sump pump and battery backup, installed together
$3,200
or $53/mo at 0% APR for 60 months
A new or deeper pit, discharge line work outside, or a dedicated circuit
Priced in writing before we start
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
$697 covers a new cast iron pump, a quiet check valve, new PVC up to your existing discharge line, a battery water alarm by the pit, the old pump hauled away and a bucket test before we leave.
A battery backup keeps pumping through a power outage, and the outage usually comes with the storm. With a new pump, the pair is $3,200 installed. The sump pump estimator helps you decide whether you need one.
What’s different in Vienna
In September 2020 the Town Engineer wrote to Vienna’s builders about seasonal high water tables. The letter lists what the Town had been seeing: groundwater flooding basements, sump pump water on sidewalks and streets, slick in warm weather and icy in winter, and more complaints about pumps that never stop and pumps that quit when the power goes. The Town sits in a minimal flood hazard area, so the water in most Vienna pits comes up from the ground, not over a creek bank.
Since November 1, 2020, new houses in the town get their lowest floor set against the seasonal high water table on that lot, under Fairfax County’s policy. About a quarter of the town’s homes went up after 2000, and those built before the rule weren’t held to it. Where one of those basements sits low, the pump can cycle for days after a wet spell and wear out long before one in a drier basement.
The older two thirds, built before 1980, are a different case. A 1950s or 1960s basement may have gotten its pit years after it was poured, its discharge sent wherever was handiest, often the curb. Water dumped there is the icy sidewalk the Town hears about. Its infrastructure manual has buried downspout pipes surface ten feet inside the property line, and a sump line does best ended the same way, on your own grass.
On the county side, Wolf Trap is nearly all single-family houses, a third of them from the 1980s and 90s, so its pits have likely seen a few pumps. Fairfax County’s sewer diagram shows a sump pump discharging outdoors as proper and one piped into the sewer lateral as improper. If we find one tied in, moving it outside is the discharge work named beside the price.
Neighborhood by neighborhood
Census figures for the owner-occupied homes in each place, and what to check on a sump pump in houses that age.
By the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
Nearly the whole town sits in 22180, which it shares with county streets toward Dunn Loring and Merrifield.
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.
When it’s time
That’s the pattern the Town’s engineer described, on lots where the spring water table rises near the floor. A pump working that hard fails sooner, and a battery backup keeps water moving when the pump or the power gives out.
The county’s Flood Mitigation Assistance Program pays back half of a battery backup, up to its cap, after the work is done and paid for. Not the pump itself, and not homes in the Town of Vienna, the Town of Herndon or the City of Fairfax.
Zoeller, who make a lot of the pumps around here, puts a sump pump’s life at seven to ten years. Past seven, replace it on your schedule instead of the storm’s.
After a heavy rain
Six checks you can make yourself once the rain lets up, none of them with your hands in the pit. Then call us and we’ll check it all.
Watch the pit during the rain or right after. The pump should start as the water rises, empty the pit and shut off. A full pit, or a pump that hums and moves nothing, isn’t keeping up.
Walk the basement: the corners, the walls, the floor by the pit, under the water heater and the furnace. Photograph any wet spot before you mop, so we can see where it came in.
Outside, find where the pump’s pipe ends. It should be open, not crushed, buried or full of leaves, and aimed away from the house so the water doesn’t run back to the foundation.
Listen when the pump shuts off. Water rushing back into the pit means the check valve isn’t closing, and the pump has to move that water again.
The pump stops when the power does, often at the height of the storm. If the basement took water during an outage, that’s the job a battery backup does.
If water is standing near the pit, an outlet or anything plugged in, don’t wade in to check. Call us, and only switch the power off at the panel from somewhere dry.
Not sure what you saw? Call us after a storm and we’ll check it all: the pump, the float, the check valve, the discharge line and where the water came in. If the pump can’t keep up, a new one is $697 installed in your existing pit; a new or deeper pit, a battery backup, discharge line work outside and a dedicated circuit are extra, priced in writing before we start.
Choosing who replaces it
Questions to ask anybody who quotes you, us included.
A pump that cycles every few minutes through March needs a different plan from one running twice a year. Ask whether the quote weighs a battery backup, and whether the pit is big enough to spare it constant short starts.
Ask what the number covers: the pump, the check valve, the pipe, hauling the old one off, a test before they leave. Then ask what costs extra, and get it in writing.
Cast iron, ideally. Plastic pumps cost less and are usually the ones that quit early. Ask before the old one comes out.
A discharge line that’s cracked, buried or frozen shut every January leaves the new pump pushing against a closed pipe. Whoever replaces it should check the outside end too.
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.
Replaced 2 sump pumps. Very professional, proficient, and courteous.
Where we work
Next door to Vienna: Dunn Loring, Oakton, McLean, Fairfax and Reston.
Questions
Only if it sits outside the town line. Fairfax County’s Flood Mitigation Assistance Program pays back half the cost of a battery backup, up to its cap, on county properties like those in Wolf Trap and Dunn Loring. It leaves out the Town of Vienna, the Town of Herndon or the City of Fairfax, and a Vienna mailing address doesn’t settle which side you’re on.
Nobody keeps that count; the Census tracks house types, not basements. It does say about eight in ten homes in the town, and nearly all in Wolf Trap, are single-family houses, and the Town’s engineer has put basement groundwater on the record. If you have a pit, find out how old its pump is.
On both sides of the town line. NOAA’s storm records show flash flooding closing Center Street at Route 123 on July 13, 2011, after 2.62 inches at a nearby gauge. Out by Wolftrap Creek, flooding closed Old Courthouse Road at Besley Road at least five times between April 2018 and October 2020, and Beulah Road at Browns Mill Road on July 14, 2025. Rain like that lifts the water under a basement for days. When it stops, make sure the pump starts, empties the pit and shuts off, and call us after the storm if it didn’t or the floor got wet; we’ll check the pump, the check valve and the discharge line.
$697 installed in your existing pit: a new cast iron pump, a quiet check valve, new PVC to your discharge line, a battery water alarm, the old pump hauled away and a bucket test. A new or deeper pit, discharge line work outside, a battery backup and a dedicated circuit are extra, priced in writing before we start. A new pump and a battery backup installed together are $3,200.
Yes. Pour five gallons of water into the pit. The float should rise, the pump should start within a few seconds, and it should shut off clean once the water’s down. If you hear water rushing back into the pit after it stops, that’s the check valve.
Ready when you are
Call, or send the form at the top. Often same-day, and we will tell you honestly when we can get there.
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 Vienna 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.