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Sump pump replacement in Marshall: $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 Marshall
No survey counts basements in 20115, so there’s no count of Marshall houses with a sump pit to give you. The Census does show a ZIP of detached houses, about eight in ten, with about one in ten a townhouse, from West Main Street buildings of the early 1800s to 1980s cul-de-sacs. Where one has a pit in the basement floor, the ground usually explains why.
Fauquier County’s plan maps soils in the service district with a seasonal high water table 10 to 40 inches below the surface, and advises siting houses with basements on them carefully. One is the bottomland along Carters Run and Piney Branch, in the southeast part of the district. A basement on that ground can spend part of each spring with groundwater above its floor, and a footing drain, where there is one, sends that water to the pit.
Other soils there shrink and swell, and the plan rates every Marshall soil low in bearing capacity; either can crack a foundation and let water in. In some parts bedrock sits 20 to 40 inches down, and the County expects basements there may need ripping or blasting, worth knowing before anyone deepens a pit. A pump that fits the existing pit is $697, rock or no rock.
Where the water goes matters. Inside the service district the house drains to FCWSA’s sewer, and the Authority’s standards forbid connecting a sump pump to it directly or indirectly, so a hose run to a floor drain or a laundry sink has to go. Outdoors, the County’s plan notes that many village lots were built long before there were stormwater rules, so the yard usually has to take the water. Point the discharge downhill, away from the foundation and from the spot where runoff already collects.
By the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
ZIP 20115 as a whole: every Marshall address, the village included. The Census place for the village alone has too few homes for steady figures.
When it’s time
On Marshall’s wetter soils that can be normal: the water table climbs in the wet months and drops in the dry ones. Worry about a pump that keeps cycling through a dry August, which points at a check valve or a leaking pipe, or one that never runs during a soaking March, which points at a stuck float.
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.
If the existing pit is too shallow for a cast iron pump to sit right, deepening it in Marshall can mean cutting into rock. Ask for that price in writing before the work 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.
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 Marshall: Rectortown, Delaplane, The Plains, Orlean and Broad Run.
Questions
It stops with the well pump, so the house loses its water and its basement pump together. With a battery backup on the pit, it keeps draining until the power comes back; a new pump and backup together are $3,200 installed. The well belongs to a well contractor; the sump pump is ours.
Yes: $697 installed in the existing pit, on Main Street or on a farm lane anywhere in 20115. On a septic lot, keep the discharge out of the tank: a septic field is built for what the house sends it, not for groundwater.
Marshall’s storm record has both kinds of trouble. Rain: NOAA’s Storm Events Database logs flash flooding on Main Street in March 2011, and standing water blocking several roads around Marshall and The Plains in September 2023. Wind: in June 2022 a storm with gusts estimated at 80 to 90 mph took down thousands of trees, wires and poles across northern Fauquier, and a pump with no power can’t run. Once it passes, watch the pit empty and the pump stop, look for fresh water at the base of the basement walls, and pull leaves and branches off the end of the discharge pipe. Then call us to check it all; a new pump that fits the existing pit is $697, with any extras priced first.
$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 Marshall 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.