It’s past seven years old
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.
Sump pump replacement in The Plains: $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 The Plains
Stone was the usual foundation in The Plains, the town’s historic register says, and several of its older buildings sit in a slight bank, some with a basement door on the low side. Mortar in a cellar wall that old softens with time, so groundwater can seep through after a long rain. A pit in a cellar like that was most likely dug long after the house went up, and it deserves a look before a new pump goes in.
The town is fairly flat, apart from a hilly section in the northeast, and rain sits against a foundation longer on level ground. It also straddles a watershed line: the USGS maps the town center in the headwaters of the Little River, which drains north to Goose Creek, while ground within about a third of a mile drains to Broad Run instead. With so little land uphill of town, the water a basement here fights is mostly rain that falls close by.
Close by can still mean wet. Within about 300 meters of the middle of town, FEMA’s flood map draws a Zone A, its high-risk flood area, and the USGS shows a small unnamed stream there that runs only part of the year. The rain gauge just north of town averages about 46 inches a year.
Across 20198 as a whole, more than nine in ten homes are detached houses, the median owner home dates from 1983 and about one in four went up since 2000. Past the town limits, off FCWSA’s system, a house usually draws from its own well. In the storm record, wind is what brings the wires down: trees and wires fell along The Plains Road in August 2023 and again in August 2024. When the power goes, the well and the sump pump stop together. A battery backup keeps the pit emptying; a new pump with one is $3,200 installed.
By the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
ZIP 20198 as a whole, the Town included: its own homes are too few for steady Census figures.
When it’s time
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.
Unplug it and check the float, the switch that rides up with the water. If it’s wedged against the pit wall, work it loose. If it moves and the pump still won’t run, the switch or the motor is done.
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 town, a pump that empties into a floor drain or a laundry sink is sending groundwater into FCWSA’s sewer, and its standards bar sump pumps and footing drains from any connection to it, direct or indirect. Moving that water outside is discharge line work, priced in writing before we start.
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 The Plains: Broad Run, Haymarket, Rectortown, Marshall and Gainesville.
Questions
Outside, downhill and away from the foundation, the tank and the drainfield. A septic system is sized for what the household sends it, and pumped groundwater can overload it. SwiftPro does no septic or well work, but we’ll route the discharge clear of both.
Not like a river town, but rain has closed roads right around it. NOAA’s Storm Events Database lists Old Tavern Road flooded and closed half a mile from town on August 11, 2017, and roads near The Plains and Marshall under standing water on September 9, 2023. After a storm like that, check the pit, then call us and we’ll check it all. A pump that can’t keep up is $697 installed in the existing pit, 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 The Plains 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.