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Sump pump replacement in Leesburg: $697 installed in your existing pit. A new pit, a battery backup, outside drain work or new wiring is extra.
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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 Leesburg
In July 2026 the Town of Leesburg asked residents to help update its stormwater master plan, last updated in 1990. The reason will sound familiar to anyone with a sump pump: total rainfall has held steady, the Town says, but more of it arrives in storms that can dump several inches in a few hours. A pump that keeps pace through a wet week can fall behind in one such afternoon, and if the power drops, a pump with nothing behind it stops.
The floodplain study that opens that work starts with the Historic District and other spots with known flooding. Downtown also holds the oldest basements in Leesburg, often stone or brick walls never meant to stay dry, where a pit, if there is one, was likely dug decades after the house. There we look at the pit before we price anything: its liner, its depth, and where the water gets in.
Along Tuscarora Creek the Town reworked the channel, finished in 2021, to cut flooding of the homes beside it; its project page shows that stretch underwater in Tropical Storm Hanna in 2008. A better creek doesn’t lower the groundwater, and after a long rain the pit is where it shows up first.
Where the pumped water goes is the Town’s business. Its construction standards keep stormwater, ground water, roof runoff and subsurface drainage out of the sanitary sewer under any circumstances, and it runs a standing program to repair old sewers and cut the rain and groundwater leaking in. A pump piped to a laundry sink or floor drain sends water exactly where the Town is working to keep it out, so a replacement is the time to take it outside. Lansdowne, on Loudoun Water’s sewer, gets the same answer.
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 |
|---|---|---|---|---|
| Leesburg | 1996 | single-family houses, about 4 in 10 | gas, about 7 in 10 | 1980s and 90s basements: an original pump is long overdue. |
| Lansdowne | 2005 | condo and apartment buildings, about 4 in 10 | gas, about 8 in 10 | Newer basements: the pump may still be the builder’s. |
By the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
Inside the town limits: the Old and Historic District downtown, Exeter and Carrvale inside the bypass, Potomac Station and Edwards Landing outside it.
Lansdowne only. It’s the one Census place outside the town limits, so the farms and lots beyond it aren’t in these figures.
When it’s time
In a heavy storm that usually means one of three things: a pump too small for the inflow, a check valve letting each load fall back, or a float snagging on the pit wall. Note when it happens and how high the water climbs; that tells us which.
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.
Water is running back into the pit through a check valve that no longer closes, so the pump moves the same water again and again until it wears out.
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.
Pits in older Leesburg basements were often added later and vary a lot, from a proper liner to a gravel-lined hole. A cast iron pump has to sit level and clear of debris to last, so ask for the pit checked and any work it needs priced in writing first.
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 Leesburg: Paeonian Springs, Hamilton, Waterford, Ashburn and Middleburg.
Questions
Well out from the foundation, so the water can’t soak back down to the pit. The Town’s stormwater advice for pipe outlets is stones at the end to slow the water and let it soak in, and that suits a sump line too.
The Census can’t tell you: its housing survey counts age, heat and building type, not basements. In town about four in ten homes are detached houses and three in ten townhouses, the kinds that most often have one here, and close to one in five is in a condo or apartment building, where few owners have a pit of their own.
Yes. NOAA’s storm events database logs August 6, 2020 as a day of flash flooding across the town, with Town Branch over its banks at Dry Mill Road and several water rescues near and north of Leesburg. The year before, Tuscarora Creek ran out of its banks and over the W&OD Trail. A pit gets its hardest test on afternoons like those, and the checklist on this page is where to start once the water drops.
$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 Leesburg 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.