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Sump pump replacement in Annandale: $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 Annandale
The Census doesn’t count basements, but the housing figures help. A little over half the homes across Annandale, Wakefield and Woodburn are single-family houses, and in the Wakefield Census place it’s 95 in 100, with nearly 9 in 10 homes there built before 1980. A rambler or split-level from the 1960s usually has a basement or a lower level set partly into the ground. If there’s a pit down there, the pump in it is almost certainly not the first, so ask how old this one is and where its pipe goes.
About 7 in 10 Annandale owners heat with gas, and in a house that age the furnace and the gas water heater usually stand on that same lower floor, often in the same unfinished room as the pit. A gas water heater’s burner sits a few inches off the floor. A pit that overflows overnight can put water around both before anybody comes downstairs, which is why the battery water alarm earns its spot.
Where the water goes is a county matter. Fairfax County calls a sump pump, downspout or French drain piped into the sanitary sewer an unpermitted connection, and it’s illegal: that water can overload the sewer and push sewage out into streams, streets and basements. The county’s advice is to have a plumber correct one. Pumped outside instead, the water heads downhill, and parts of Annandale sit in the county’s Cameron Run watershed, whose streams include Holmes Run and Indian Run.
Garden apartments and condos cluster around the crossroads of Little River Turnpike and Columbia Pike and make up about a fifth of Annandale’s homes, about 3 in 10 in Woodburn. A pit serving a whole building is the association’s. Townhouses, about 15 in 100 homes, include the rows north of Braddock Road east of Wakefield Chapel Road, where the pit in your own lower level is usually yours; the HOA documents settle it.
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.
| Place | Median home built | Most homes are | Heated with | What to check |
|---|---|---|---|---|
| Annandale | 1967 | single-family houses, about 5 in 10 | gas, about 7 in 10 | Older basements: check where the sump line empties. |
| Wakefield | 1968 | single-family houses, nearly all | gas, about 8 in 10 | Older basements: check where the sump line empties. |
| Woodburn | 1968 | single-family houses, about 4 in 10 | gas, about 6 in 10 | Older basements: check where the sump line empties. |
By the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
When it’s time
Weather Service storm reports have Accotink Creek flooding Woodburn Road on more than 60 days since 2008, most recently at Spicewood Drive on March 16 this year. Ground that wet can keep a pit filling for hours after the rain stops. If yours ran without a break through the last one, or the floor around it got damp, the pump is telling you it’s behind.
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.
In a house that’s had sixty years of owners, it might be a floor drain, the laundry tub or a pipe into the wall nobody has traced. A quote written without asking can’t say whether moving it outside is part of the job.
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.
Tech was super knowledgeable, polite, communicative, and kind. I highly recommend this great company who prioritized my request to review my sump pump and other related needs
Where we work
Next door to Annandale: Falls Church, Springfield, Dunn Loring, Burke and Fairfax.
Questions
Usually. Annandale is all Fairfax County, and the county’s Flood Mitigation Assistance Program reimburses half of an approved flood protection cost, with battery backups for sump pumps on its approved list. It doesn’t cover the pump itself, commercial property, or homes in the Town of Vienna, the Town of Herndon or the City of Fairfax. Apply after the work is done, with photos, an itemized invoice and proof of payment; a renter also needs the owner’s signed approval.
Usually the owner. Virginia’s landlord law has a landlord keep the plumbing and other facilities they supplied in good and safe working order, and a sump pump that came with the house is one of them. About 3 in 10 homes across Annandale are rented, about 4 in 10 in Woodburn. Tell the owner the day the pump starts humming or cycling.
On July 8, 2019, the Accotink Creek gauge at Annandale crested at 12.61 feet, more than three feet over its 9.5 foot flood stage. Woodburn Road and Prosperity Avenue flooded at the creek, and water covered the ballfields at Wakefield Park. In June 2006 a storm sent water across Little River Turnpike at Wakefield Chapel Road and into a building on Backlick Road. After rain like that, make sure the pit emptied and the floor stayed dry, then have us go over the pump, the check valve and the pipe outside.
$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 Annandale 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.