Nothing drains anywhere
Urgent. Slow fixtures on two floors share one pipe: the main line. Stop running water and call. Flushing again is how a slow main becomes a basement floor.
Fairfax, Loudoun, Prince William, Arlington and Fauquier counties
Plumber in Fairfax and Northern Virginia
A plumbing diagnosis visit is $49, or $250 after hours, and drain cleaning runs $200 to $800 a fixture. You get the number in writing before a plumber picks up a tool. Call SwiftPro, rated 5.0 stars across 1,138 reviews, at (703) 997-9757, 24 hours a day, 7 days a week, anywhere in Northern Virginia.
Tell us what it’s doing and we’ll call you back with a number.
- The price in writing before any work starts
- Answered around the clock, by a person
- Our own licensed plumbers, Virginia Class A #2705192276
5.0 stars across 1,138 reviews
Two of our plumbers in a Northern Virginia mechanical room. Our own crew, our own trucks.
Get your price in writing
Send this and the office calls or texts you back to set a time.
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Rather talk now? (703) 997-9757
Licensed and insuredVirginia Class A contractor #2705192276
24/7 emergency serviceWe answer day or night, 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
Who you would be calling
SwiftPro plumbing, at a glance
SwiftPro Heating, Cooling & Plumbing is a licensed plumbing contractor based in Chantilly. Our own plumbers do drain cleaning, leak detection, toilet repair, water heater replacement, sump pumps, repiping, gas lines and sewer lines across Northern Virginia, and somebody picks up the phone at any hour.
- SwiftPro Plumbing, Chantilly, Virginia
- LicenseVirginia Class A contractor #2705192276
- Based in4230 Lafayette Center Dr N, Chantilly, VA 20151
- Phone(703) 997-9757, answered around the clock
- CountiesFairfax, Loudoun, Prince William, Arlington, Fauquier
- PlumbersOur own, in our own wrapped vans
- PricingIn writing before any work starts
- PermitsPulled on water heaters, gas lines and sewer lines
- Reviews5.0 stars across 1,138 reviews on Google, Angi, Yelp, the BBB and Facebook
The number on the side of the van is the license: Virginia Class A #2705192276.
Prices, rounded and published
What plumbing costs in Northern Virginia
Sixteen jobs that cover most calls, what each one runs, and what moves the number. Every label goes through to the long version.
Drain cleaning and sewer lines
$200 to $800
Kitchen sink, bathroom sink, tub, shower, or a toilet augered. Which fixture it is barely changes the work.
$550 to $1,650
The pipe carrying the whole house to the street. How far down the blockage sits decides the day.
Sewer camera inspection on its own
$500 to $1,700
The line usually has to be cleared before the camera sees anything, which moves it.
Sewer line replacement, dug up
$7,500 to $9,000
or $125/mo at 0% APR for 60 months
Rock and clay are why digging here costs what it does. Trenchless lining exists to avoid it.
$125/mo60mo @ 0% APR
Price range
$7,500-$9,000
8yrs @ 7.99%
$106/mo
15yrs @ 9.99%
$81/mo
Monthly figures on the starting price, the whole price financed, on approved credit. The lender sets the final terms. How financing works
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
Prices checked .
Toilets, disposals and leak detection
$250 to $900
Fill valve, flapper, wax ring, rebuilt tank. The smallest job here, and the biggest quiet waster of water in a house.
$550 to $900
$350 to $500 if you supply the unit. Freeing a jam is a short visit, not a replacement.
$200 to $500
Finding it, not fixing it. Acoustic and pressure work before anyone opens a wall.
Prices checked .
Water heaters and sump pumps
$2,750 to $10,500
or $46/mo at 0% APR for 60 months
Tank or tankless, from the water heater brands we install. Permit, expansion tank, pan and haul-away included.
$199
Or $99 right now, with the whole-home plumbing safety check on the same visit.
$697
Installed, in the pit you have. A new pit, a battery backup or work on the outside discharge line is extra.
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
Prices checked .
Repiping, valves and gas lines
$1,000 to $12,000
or $17/mo at 0% APR for 60 months
A section under one fixture is an afternoon. The runs through a whole basement are a different job.
Pressure reducing valve replacement
$500 to $1,000
The cause of most whole-house water pressure complaints, and of fixtures failing early.
Water service line replacement
$3,500 to $8,000
or $58/mo at 0% APR for 60 months
The pipe from the meter to the house. You don’t own it until it crosses your property line, then you very much do.
$250 to $500
A new gas line run is not priced from a page. It needs a plumber and a permit first.
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
Prices checked .
A range is not your number. Where you land is the access, the age of the pipe, and what we find when we look. You get yours the short way: a plumber looks, and the price is in writing before anything comes apart.
Get a price
Tell us what it’s doing and we’ll give you a number.
Running right now
Plumbing deals you can book this month
The same deals, on the same terms, as our offers page, which is where every one we run lives.
Drain Clearing$99 up to the P-trapLimited time. See the drain clearingWater Heater Flush$99 normally $199Limited time. See the flushWater Heater Replacement$500 off any sizeLimited time. See your priceSump Pump Replacement$697 installedEvery day. See the offerFree Second OpinionFree nothing to buyEvery day. Get a second opinion
Coupons for toilets, drains and plumbing repairs are on the offers page too.
Start here
What is it doing right now
Most plumbing calls are one of these eight. Yours tells you whether you have an afternoon or ten minutes.
One sink or tub is slow, the rest are fine
Can wait. That is the branch under that fixture, not the main, so you have time. Pulling the hair off the pop-up stopper fixes it more often than you’d think.
A toilet that won’t stop running
Can wait. Usually a flapper or a fill valve, the cheap end of the toilet repair range. It wastes water every hour it runs.
No hot water this morning
Today. Gas or electric changes what we check first. Pilot and gas valve on one, elements and the upper thermostat on the other.
Water on the floor around the tank
Urgent. A tank leaking from the bottom is finished. Nobody can repair rusted-through steel, and anyone offering to is selling you a delay.
Weak pressure at every fixture
Can wait. Whole house rather than one faucet is usually the pressure reducing valve at the main, not your pipes.
A wet patch and no obvious source
Today. A water meter that creeps with every tap shut means a leak between the street and you. We find it before anybody opens a wall.
It smells like sewage, or the basement backed up
Urgent. Roots, a bellied line, or old clay come apart. The sewer camera tells you which, and that decides whether the yard comes up at all.
One slow sink is not a blocked main
One slow fixture is the branch under it. Two on different floors is the pipe they share, and that is the main sewer line. It is the first thing we ask on the phone.
Ask a plumber
Not sure which one you have? Describe it and we’ll tell you.
If it is happening right now
Emergency plumber in Fairfax, answered 24/7
Four things, in this order, before you call anyone. The difference between a wet floor and a wet house.
Main water shutoff
Water where it should not be
- 1
Close the main
Where the water enters the basement or crawl space, near the meter, often beside the water heater. Clockwise until it stops.
- 2
Close the water heater too
A second valve sits on the cold line at the top of the tank. Closing it stops the tank emptying itself after the first leak.
- 3
Kill the power if water is near it
A panel, a furnace, a washer. If water is heading for one and the breaker is dry and reachable, kill it before you mop.
- 4
Then call, and say what you already shut
It changes what we put on the truck. We answer around the clock, and you get a person.
Ten minutes on a dry day
Find your shutoff valves before you need them, and read what to do with a burst pipe. In January they are the two most useful pages here. What an after-hours visit costs, and what can wait until morning, is on 24/7 emergency plumbing.
Right now
Running water you can’t stop? Say that first when you call.
5.0 stars across 1,138 reviews
What people wrote after the plumber left
New tenants in the rental property had a problem with their drain. Property manager sent their plumber said they snakeed the drain and could not solve the clog. Wanted $800 to snake the drain through the roof vent. Called Swift Pro and James Milligan solve the problem in 15 minutes saving me hundreds of dollars.
Drain cleaning
Our water heater died on Friday night around 7:30pm. We called SwiftPro, and by 10pm we had quotes, a phone call explaining the options, followed by a signed contract and an appointment to have a new one installed Saturday morning. We’ve also used SwfitPro before for HVAC services, and each time they have been quick to respond, always pleasant to deal with, thorough in their work, and competitive and fair in their pricing.
Water heater, next morning
Very fast response to my initial inquiry. Set up an appointment for the next morning and the technician, Xavi, arrived in the agreed-upon timeframe. He went to work right away, assessing the problem with our sump pump, explaining it to me, and providing a potential solution, including full transparency on pricing. The work was done quickly and expertly. He even took time to explain to me why it happened and steps I can take to prevent it in the future.
Sump pump
SwiftPro HVAC came out to do a plumbing maintenance check. The check was included with my recent new HVAC installation. The technician (James Milligan) was very professional and quickly evaluated my faucets, toilets, water heater, washing machine lines, main water intake valve, all cut-off valves and visible pipes. Now I have an estimate for needed maintenance repairs.
Whole-home check
James M. did a great job diagnosing and fixing the issues I was having with two of my toilets. He was friendly, professional, and worked quickly while making sure everything was repaired correctly. I really appreciated his knowledge and efficiency.
Two toilets
Fast service and very knowledgable. The technician helped me with both a garbage disposal and water softer issue. He was friendly and easy to talk to about future needs.
Garbage disposal
Six plumbing jobs, copied as written, typos and all. The first is somebody else’s quote for fifteen minutes of work, which is the argument for a second number. We don’t write, edit, buy or remove reviews.
Who turns up
The plumbers who actually show up
Our own plumbers, our own trucks
Nobody here is a subcontractor with a magnet on the door. The crew in the photo is the crew that shows up, and those are the names in the reviews.
The price is settled before the work
You see the number in writing before anything is taken apart. No hourly meter running while somebody decides what to do.
Licensed, insured, and permitted where it counts
Virginia Class A contractor #2705192276. Water heaters, gas work and sewer replacements get pulled permits, because the next buyer’s inspector asks.
Sometimes the answer is no
If a repair buys you five more years we will say so instead of selling a replacement.
Already holding a quote from somebody else? Send it over. A free second opinion costs nothing, and we have talked people out of work they were about to pay for.
By the numbers
Fairfax houses, by the numbers
From the Census Bureau’s 2020 to 2024 survey. Median year built and heat count owner-occupied homes only.
The City of Fairfax
- Median home built1966 Census
- Built before 1980about 7 in 10 Census
- Built since 2000about 2 in 10 Census
- Most homes aresingle-family houses, about 5 in 10 Census
- Heated withgas, about 7 in 10 Census
- Rentedabout 3 in 10 Census
- Houses from before 1960 were plumbed in galvanized steel, which narrows with rust from the inside until the pressure goes.
- Houses built before 1980 mostly drain through cast iron, which rusts through along the bottom of the pipe.
The Fairfax County side
Most of the Fairfax Station Census place, in the table, has Fairfax mail, so it counts here.
- Built before 1980about 3 in 10 Census
- Built since 2000about 3 in 10 Census
- Most homes aresingle-family houses, about 4 in 10 Census
- Heated withgas, about 6 in 10 Census
- Rentedabout 4 in 10 Census
- A lot of houses here went up while polybutylene supply pipe was in use, about 1978 to 1995, and it fails at the fittings.
Who permits the work: the City of Fairfax or the county
City of Fairfax
The City of Fairfax runs its own permit office; a Fairfax mailing address outside the city line goes through Fairfax County. Source.
Fairfax County
In Fairfax County the homeowner owns the whole sewer lateral, from the house to the county main, including the stretch under the street. Replacing it takes a county plumbing permit, plus a VDOT permit under a state road. Source.
Fairfax County requires a permit to replace any gas appliance, even like for like: a gas water heater, furnace or boiler. Replacing a fuel-burning appliance also needs a chimney vent certification. Source.
Virginia lets emergency replacement work start first, with the permit application in by the end of the next working day. Source.
Recent work
Recent plumbing work in Fairfax.
What our technicians found and fixed on visits in Fairfax, from their notes on each job.
October 2026
A leak in the basement ceiling whenever the kitchen sink ran: the closet wall behind the kitchen opened, a leaking copper tee found, and the old copper drain from the sink down to the ceiling below cut out and replaced in PVC, along with the grease-packed pipe under the sink.
October 2026
A tankless water heater whose service valves and recirculation check valve had gone in upside down: the system drained, the valves turned the right way round, the heater flushed and its inlet screen cleaned.
October 2026
A new 50 gallon gas water heater set in a drain pan, with a thermal expansion tank and a new shutoff valve.
After a heavy rain
After a storm in Fairfax, check the basement drains.
Heavy rain finds the weak spots in a house’s plumbing. Four checks you can make yourself, then call us and we’ll look at the rest.
- 1
Water coming up a floor drain?
Clear water with no smell is usually groundwater. Gray water, or a sewer smell, means the main line is backing up: stop running water in the house and call us.
- 2
Drains slow or gurgling since the rain?
A main line with a cracked joint or roots in it can take in groundwater during a storm and slow down. A sewer camera inspection, $89 added to a visit, shows where.
- 3
Is the sump pump running?
If the house has one, watch it once: it should start as the pit fills, empty it and shut off. Our sump pump replacement page has the rest of the checks.
- 4
Did water reach the water heater?
If floodwater got to a gas water heater’s burner or controls, leave it off. Don’t relight it until a plumber has checked it.
Call us after a storm and we’ll check it all: the floor drains, the main line, the sump pump and the water heater. Any repair gets its price in writing before the work starts.
While we are talking about it
The plumbing worth doing on a schedule
Not everything needs a yearly visit. A cleared drain stays cleared. These five genuinely repeat.
| What | How often | Why |
|---|---|---|
| Whole-home plumbing safety check | Once a year | Supply lines, shutoffs, pressure, visible leaks, and whether those valves still turn. |
| Water heater flush | Once a year | Sediment bakes into a crust on the tank floor and the burner works through it. |
| Washing machine hoses | Every five years | The cheapest part in the house, and one of the two that flood it. |
| Backflow test | Yearly, where required | Irrigation and fire lines. The water authority sends the notice and wants paperwork. |
| Sewer camera inspection | When you buy the house | Once, early, so you find the clay and the roots first. |
Worth a minute. The whole-home plumbing safety check and the water heater flush go on one visit together right now, $99 for both. The Comfort+ membership is $199 a year and covers four visits: a water heater flush with a sewer camera inspection, the dryer vent cleaning, a heating maintenance visit and a cooling maintenance visit, with 15 percent off any service.
Hard water? See whole-house water filtration and water softeners.
Book the check
The water heater flush and the whole-home check go on the same visit.
Questions we hear every week
Plumbing questions, answered straight
Do you have a 24-hour emergency plumber in Fairfax?
We answer around the clock, and you get a person. If water is running that you can’t stop, say that first. If it can safely wait until morning, we’ll say so.
What does a plumber cost in Northern Virginia?
A plumbing diagnosis visit is $49, or $250 after hours. The sixteen ranges above cover most repairs, the number is in writing before a tool comes off the truck, and the repair is 15 percent off with a Comfort+ membership.
Can you replace the main water shutoff valve in Fairfax?
Yes. SwiftPro’s plumbers replace main water shutoff valves in Fairfax, usually with a quarter-turn ball valve. It’s priced at your house after the $49 diagnosis visit, in writing before we start.
What does drain cleaning cost?
$200 to $800 to clear one fixture, and $550 to $1,650 for the main sewer line, the pipe carrying the whole house to the street. A sewer camera inspection added to a visit we’re already making is $89; Comfort+ members get one every year.
How much does toilet repair cost?
$250 to $900, and it is usually a flapper, a fill valve or a wax ring. A new toilet installed runs $800 to $1,300 with us supplying it.
Who is the best plumber in Northern Virginia?
Judge it on evidence, not an ad. Ours: 5.0 stars across 1,138 reviews, a Virginia Class A license (#2705192276), our own plumbers, and the price in writing first. Ask whoever you call for the same four things.
Which parts of Northern Virginia do you cover?
Fairfax, Loudoun, Prince William, Arlington and Fauquier counties. Chantilly is home, and the vans run out from there every morning.
Can you tell me if another company’s quote is fair?
Yes. Book a free second opinion and send it over.
Do you handle the permit?
On water heaters, gas work and sewer replacement, yes, and it’s already in the price. The next buyer’s inspector will ask for it.
How fast can somebody get here?
We answer day or night, and we will tell you honestly when we can get there. If water is running and you cannot stop it, say so when you call.
Do you work on commercial buildings?
Yes, including backflow testing and certification.
Will you leave a mess in my house?
No. We cover the floor, and we clean up before we leave. In a customer's words: “They covered the floor with a tarp and cleaned up any mess on the floor.” (Robert D., Google review, September 2026)
Can I get a price range before I book?
Yes, ask when you call. You get a range on the phone and the exact price in writing before anyone starts. In a customer's words: “I was also given a price range up front when scheduling the service.” (Andrew T., Google review, September 2026)
Fairfax, Loudoun, Prince William, Arlington and Fauquier counties
Where our plumbers work every week
Chantilly is home and the vans run out from there every morning. These towns have a plumbing page of their own:
Fairfax County
Arlington County
Loudoun County
Prince William County
Fauquier County
Stafford County
Every town on one page
We’re in these every week too
Going deeper on one job? Drain cleaning and buried lines, toilet repair, faucet and sink repair, garbage disposal repair, shower and tub repair, pipe repair, hot water recirculation pumps, water heaters, sump pump repair, sewage ejector pumps, well pumps, gas line repair, trenchless sewer repair and backflow testing each have a page of their own.
Get the number first
Call and you get a person, or send the form at the top and we’ll call you back. Either way you know what the work costs before anybody opens a wall. And if you don’t need it, we’ll tell you that too.
SwiftPro Heating, Cooling & Plumbing
4230 Lafayette Center Dr N, Chantilly, VA 20151
44679 Endicott Dr, Suite 211, Ashburn, VA 20147
SwiftPro Plumber & Water Heaters
4200 Lafayette Center Dr, Suite N, Chantilly, VA 20151
Virginia Class A contractor license #2705192276
BBB Accredited with an A rating.
Watch our plumbers on real jobs
Real jobs in Northern Virginia homes, filmed by our own crew. Tap one to watch.
0:30How to Replace a Garbage Disposal, From Mounting Ring to Leak Test
0:37PEX vs Copper, and Why Some Plumbing Pipes Are White
0:32Replacing Old Pipes: New Copper Overhead, Old Line Cut Out
0:33Plumbing ASMR: A Corroded Sink Drain, a Drain Machine and a New Part
0:30How Does a Garbage Disposal Work? Swapping One Under the Sink
0:39Pipe Replacement Under the Sink and Out at the Yard Cleanout