Open 24/7 for emergencies
Drain cleaning for one fixture is $200 to $800 and toilet repair is $250 to $900, from our published price list.
Get your price in writing
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Rather talk now? (703) 997-9757
Plumbers for Chantilly and South Riding, 20151 and 20152, from our shop on Lafayette Center Drive: leaks, drains, sewer lines and water heaters.
5.0 stars across 1,132 reviews
Part of our plumbing team, with the drain machine, the sewer camera and the jetter they bring to the house.
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 list as our plumbing page, every line a range because the house decides where it lands. You get the number before the work starts.
Drain cleaning, one fixture
$200 to $800
Main sewer line cleaning
$550 to $1,650
Sewer camera inspection, added to a visit
$89
Leak detection
$200 to $500
Toilet repair
$250 to $900
Pressure reducing valve replacement
$500 to $1,000
Water heater replacement
$2,757 to $10,486
or $46/mo at 0% APR for 60 months
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
A sewer camera inspection is $89 added to a visit we’re already making. It’s the cheapest way to know what a drain is doing before anybody talks about digging.
With Comfort+ membership, any service is 15% off, and a water heater flush with a sewer camera inspection and a plumbing safety inspection comes every year.
Recent work
What our technicians found and fixed on visits in Chantilly, from their notes on each job.
October 2026
A new 50 gallon gas water heater, brought up to code with a new drain pan and thermal expansion tank, and every water and gas connection checked for leaks.
October 2026
A year-old tankless water heater flushed with descaler to clear the scale out of it, then run and checked.
September 2026
A stopped-up kitchen sink: the trap dropped and the line snaked 35 feet, past something hard at about 28, then the sink filled and drained several times to prove it.
Who comes out
Two of the people we send, in their customers’ own words from our Google reviews. The same team covers Chantilly from our Chantilly shop and our Ashburn office.
Tyson did a great job on several minor items along with repairing two toilets. He was courteous, quick, clean, and friendly.
Fast service to fix our water heater. Helpful and professional technician (thanks Harold!).
What’s different in Chantilly
Most of 20151 went up in the 1980s and early 90s, right when grey polybutylene supply pipe was going into new houses, so it’s worth knowing what yours is made of. 20152, the South Riding side, is 2000s construction: copper or PEX supply and PVC drains, with a lot of the original water heaters now at the age tanks give out.
20151 drinks Fairfax Water. 20152 is on Loudoun Water, which publishes no current hardness figure and points its customers to Fairfax Water’s, 3 to 10.8 grains per gallon in 2025 depending on the plant and the month. That’s hard enough to leave scale in a water heater, and water heaters are a bigger share of our Chantilly work than in most towns.
Pressure is the one rule both water companies agree on: the regulator is yours. Fairfax Water promises only a minimum at the main and no steady pressure, and Loudoun Water’s rules put the pressure regulator entirely on the customer. So on either side of Chantilly, a gauge on the hose bib is the first test when faucets drip and toilet valves wear out early, and a valve stuck open is a plumber’s job, not the utility’s.
Cold snaps are the other Chantilly plumbing call. On the 20151 side, Fairfax Water suggests marking the main valve so anyone in the house can shut it fast, and Fairfax County Fire and Rescue says to shut off and empty the hose bibs, let warm air reach the pipes under sinks on outside walls, and use room heat on a frozen pipe, never an open flame. The line out to the hose bib is usually the first to split.
Neighborhood by neighborhood
Census figures for each place, and the pipe that usually goes with houses that age. Median year built and heat count owner-occupied homes only.
| Place | Median home built | Most homes are | Heated with | The pipe you usually find |
|---|---|---|---|---|
| South Riding | 2006 | single-family houses, about 5 in 10 | gas, about 8 in 10 | Copper or PEX supply, PVC drains, original water heaters aging out. |
| Chantilly | 1987 | single-family houses, about 6 in 10 | gas, about 5 in 10 | The polybutylene years: check the supply pipe; PVC drains. |
By the numbers
From the Census Bureau’s 2020 to 2024 survey. Median year built and heat count owner-occupied homes only.
What you’d notice
Water rising in a basement floor drain or the lowest shower when the washer empties means the main line out of the house is blocked. A camera shows where it sits, and that decides the next call: your own line, or the stretch under the street that Loudoun Water looks after in 20152.
Polybutylene, often stamped PB, went into houses from about 1978 to 1995. It tends to let go at the fittings with no warning, so it’s worth knowing whether you have it.
A damp patch on a ceiling, a warm spot on the floor, a meter that keeps ticking with every tap off. A slow leak inside a wall does most of its damage before it ever shows itself.
One slow sink is a sink. Two slow drains on different floors are sharing the pipe out to the street, and a basement drain that gurgles while you run water upstairs is the main line talking.
After a heavy rain
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.
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.
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.
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.
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.
Choosing a plumber
Questions worth asking anybody who comes out, us included.
In 20152 a sewer line replacement has to be inspected by Loudoun Water before the trench is filled. A plumber who works on that side books it without being reminded.
Anyone can check on the state’s license lookup in about a minute. It’s the one question that takes the guesswork out of the rest.
A sewer camera inspection is cheap next to any dig, and it shows whether the problem is a root, a sag or a break. A quote to dig without one is a guess.
Every plumbing job on our list has a range. A plumber who won’t say where yours lands until the wall’s open is asking for a blank check.
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.
Arrived within an hour on a Sunday morning and provided great service.
Called SwiftPro around 5 am and their electronic system scheduled an appointment for us same day.
Idk why they told me on the phone it cost me 49 but whn he got here it cost me 260 for clogged toilet
Where we work
Next door to Chantilly: Centreville, Catharpin, Herndon, Aldie and Oakton.
Questions
Moderately hard to hard on both sides. Fairfax Water’s 2025 figures ran 3 to 10.8 grains per gallon, and Loudoun Water points its customers to those same numbers. That’s enough to put scale in a water heater, which is what the yearly flush is for.
Yes, and a lot of the 2000s originals are due. A tank runs $2,757 to $7,494 installed and tankless $8,886 to $10,486, with the permit, the expansion tank, the pan and the haul-away in the number. From about $46 a month at 0% APR for 60 months, the whole price financed, on approved credit. The water heater estimator gives your exact price in about a minute.
It depends on the county. In 20151 Fairfax County puts the whole lateral on the homeowner, out to the county main and under the street, and replacing it takes a county plumbing permit. In 20152 you keep up the building sewer, Loudoun Water handles the stretch under the street, and its inspector has to see any replacement before the trench is filled.
Often, when the tank itself is sound: a gas valve, a thermocouple, an element or a thermostat is a repair, priced in writing before the work. A tank leaking from its body can’t be fixed, and past 10 to 12 years the money usually goes further on a new one, which the water heater estimator prices in about a minute.
It depends on the job, and every one has a published range: drain cleaning for one fixture $200 to $800, main sewer line cleaning $550 to $1,650, leak detection $200 to $500, a pressure reducing valve replacement $500 to $1,000, toilet repair $250 to $900. A sewer camera inspection added to a visit is $89.
Ready when you are
Call, or send the form at the top. You get the price before the work, and if it can wait, 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
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 Chantilly 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.