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Sump pump replacement in Triangle: $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 Triangle
On FEMA’s 2015 flood map, the 100-year floodplain along Quantico Creek, Little Creek and smaller streams covers about a fifth of the land inside the Triangle Census area. The houses mostly sit higher: of roughly 2,550 house and townhouse addresses, the county’s copy puts four inside it, three on Fuller Heights Road and one on Creek Road. So basement water here is far likelier groundwater and yard runoff than a creek: a sump pump’s job.
Fuller Heights Road is the exception. At 7 feet on the Little Creek gauge at Route 1, the National Weather Service says a building along Fuller Heights Road near Fuller Road starts to flood, and at 10.54 feet that intersection sits under three feet of water. On June 2, 2018, floodwater submerged a car at Route 1 and Fuller Road. A pump can’t push back a creek, so on those few lots the flood map comes first.
In Cramers Ridge, 2004 and 2005 streets around Rosings Way and Lady Catherine Circle, about two houses in three stand on what the county’s soil map calls Marr very fine sandy loam, 25 to 50 percent slopes. Every house in Garrison Woods, and three in four in Cramers Ridge, sits on the county’s Category III, a class that takes in marine clay, shrink-swell soil and high groundwater. Rain soaking into an uphill yard travels underground to the basement wall, and the footing drain usually carries it to the pit.
Prince William’s building office wants a sump’s discharge to drain away from the foundation: six inches of fall in the first ten feet, a splash block sloped away, or the pipe carried two feet out to ground that falls away. The weather station at Quantico’s Marine Corps air station, about four miles off, averages 76 nights a year at or below freezing, so a low spot holding water in that pipe can ice up from November into March.
By the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
When it’s time
Triangle’s storm records are mostly wind: the October 2011 tornado that uprooted trees from the Stafford line into Triangle, a 66 mph gust at Quantico’s air station in the June 2012 derecho, trees down near Route 1 and Cabin Road in August 2022. When the power goes, so does the pump, unless a battery backup takes over.
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.
On a sloped Triangle lot the water reaching the pit usually starts uphill, at a downspout emptying toward the house or a yard that drains to the foundation. Ask whoever quotes the pump to look on that side too.
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 Triangle: Quantico, Dumfries, Woodbridge, Stafford and Lorton.
Questions
Almost certainly not: the county’s copy of FEMA’s map puts only four Triangle house or townhouse addresses inside the 100-year floodplain, on Fuller Heights Road and Creek Road. Prince William County’s online County Mapper shows yours, soil included.
Usually the owner. About 37 percent of Triangle households rent, and Virginia’s landlord law has the owner keep the plumbing and appliances supplied with the home in good and safe working order. Tell the landlord now; a new pump in the existing pit is $697 installed.
$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 Triangle 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.