Open 24/7 for emergencies
Sump pump replacement in Fairfax Station: $697 installed in your existing pit. A new pit, a battery backup, outside drain work or new wiring is extra.
Get your price in writing
Send this and the office calls or texts you back to set a time.
We’ll call or text this number about your request. By sending it you agree to our terms and privacy policy.
Rather talk now? (703) 997-9757
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 Fairfax Station
Fairfax County’s assessment records list a basement under about 97 in every 100 houses with a Fairfax Station address, nearly all of them full, and about 8 in 10 of those basements have a finished rec room. So a sump pump out here is rarely guarding bare concrete. It’s guarding carpet, drywall and the family room. The records don’t say which basements have a pit, and not every one does.
At least 6 in 10 are what the county calls daylight basements, with one wall out of the ground where the lot falls away. Groundwater moving downhill meets the uphill wall first, and the drain along the footing carries it around to the pit. The discharge usually leaves on the low side, and on a slope it has to run far enough downhill that the water doesn’t soak back toward the foundation.
On a septic lot the water has one more place to stay away from. Fairfax County’s septic code bars basement sump discharges, along with roof, floor and footing drains, from connecting to the septic system, and wants them sent away from the drainfield so no water flows into, through or over it. A sump line emptying toward the field soaks the very ground the system needs to drain. About 3,000 Fairfax Station properties are on septic, so when we replace a pump here we check where its line ends, not just what’s in the pit.
About 1,700 of those septic lots also draw from a private well, and on those houses a power cut stops two pumps at once: the one bringing water in and the one keeping it out of the basement. A battery backup beside the main pump is the part that keeps working when the lights go out.
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 |
|---|---|---|---|---|
| Fairfax Station | 1982 | single-family houses, about 9 in 10 | gas, about 5 in 10 | 1980s and 90s basements: an original pump is long overdue. |
| South Run | 1988 | single-family houses, nearly all | gas, about 9 in 10 | 1980s and 90s basements: an original pump is long overdue. |
| Crosspointe | 1993 | single-family houses, nearly all | gas, about 8 in 10 | 1980s and 90s basements: an original pump is long overdue. |
By the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
ZIP 22039 as a whole: every Fairfax Station address. The Fairfax Station Census place in the table also takes in streets with Fairfax mail.
When it’s time
Follow the sump line outside. If it empties on the same downhill side as the drainfield, the pump may be wetting the field every time it runs. Moving the outlet is discharge line work outside, priced in writing before we start.
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 Fairfax Station it changes the job. On a septic lot the discharge has to stay clear of the drainfield, and nobody can judge the existing line without knowing where the field is. Point out the tank lid and the field when the tech arrives.
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 Fairfax Station: Burke, Clifton, Springfield, Fairfax and Annandale.
Questions
No. Fairfax County’s Individual Sewage Disposal Facilities Code prohibits connecting a basement sump discharge to a septic system and wants it directed away from the drainfield. If yours runs into a house drain or a laundry sink, that water ends up in the tank and the field. Rerouting it outside is discharge line work, priced in writing first.
Usually in the unfinished part: the furnace room, under the stairs or a utility closet, as a lidded basin set into the floor. Some get boxed in behind an access panel when the basement is finished. Can’t find one? The house may simply not have a pit.
Yes, once it’s safe to go down. On July 12, 2025, Weather Service reports had at least a foot of water flowing across Fairfax Station Road near Piney Branch. Between July 24 and August 1, 2018 they logged Popes Head Road with all lanes blocked, Havenner Road closed near Youngs Branch Drive and Fairfax Station Road shut between Colchester Road and Innisvale Drive. Piney Branch is one of the main streams of the Popes Head Creek watershed, which drains to the Occoquan. When those creeks run that high, the slope above a daylight basement is soaked too, and its water heads for the pit. Watch the pump bring it down, then call us to check the rest.
$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 Fairfax Station 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.