Open 24/7 for emergencies
Leak detection in Dunn Loring is $200 to $500, and drain cleaning for one fixture is $200 to $800, both priced from our list before work starts.
Get your price in writing
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Rather talk now? (703) 997-9757
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.
What’s different in Dunn Loring
Dunn Loring sits on the Piedmont Upland, about 434 feet up, and the flooding NOAA has logged around it was on roads, fast and off the pavement: Hilltop Road closed by a flash flood between Willomere Drive and Old Lee Highway on July 8, 2019, and I-66 partly closed near Vienna on September 30, 2010, when a gauge nearby caught 4.8 inches. Rain like that gets into a basement through a window well, a floor drain or under a stairwell door.
When water comes up a floor drain after a storm, Fairfax County’s advice is to ask the neighbors. If they’re backing up too, call the County, which checks its own main. If it’s only you, the blockage is in your line, and the County makes the owner responsible from the house to the main, the connection included. No 22027 street is in the Town of Vienna’s sewer area, so that main is the County’s. Main sewer line cleaning runs $550 to $1,650.
Most 22027 houses went up in the 1980s and 90s, so the drains are usually plastic, not cast iron, and a backup is more often roots at a joint or a low spot in the line. A sewer camera inspection, $89 added to a visit, shows which. If we cut roots out, the County asks you to tell it too, so it can clean its main.
Vienna’s weather station, 3.6 miles west, averages about 99 nights a year at 32 or colder, and January 2025 put several in the single digits or below zero. Fairfax County Fire and Rescue says to shut off and drain the lines to outdoor faucets and unheated spaces, open cabinet doors on outside walls, and not count on a dripping faucet. If a pipe freezes, close its valve and thaw it slowly with room heat or a careful hair dryer, never a torch. Most breaks show only once the ice melts; leak detection is $200 to $500.
By the numbers
From the Census Bureau’s 2020 to 2024 survey. Median year built and heat count owner-occupied homes only.
ZIP 22027 as a whole: every Dunn Loring address. The Dunn Loring Census place is bigger: about three in four of its homes have Vienna mail.
What you’d notice
A frozen pipe splits, but the ice plugs the crack until it melts. In a 1990s house the likely spots are a kitchen sink on an outside wall, the line to a hose bib, or plumbing over the garage. Shut off the main and call.
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.
Your pipes, your paperwork
Fairfax Water promises 20 psi at the main and no uniform pressure, and the pressure reducing valve on your side of the meter is yours to buy and keep up. Over 80 psi, the Virginia Residential Code calls for one, and an expansion tank with it. Source.
Our Virginia Class A contractor license, 2705192276, is on the side of the van.
Choosing a plumber
Questions worth asking anybody who comes out, us included.
Fairfax County calls a sump pump, downspout or French drain piped into the sanitary sewer illegal, since storm water can overload it and push sewage into basements, and tells owners to have a plumber correct it.
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.
Zabi helped us with a complex plumbing problem. He explained clearly the problem and gave us various repair options. He is courteous, professional and highly experienced. We recommend him!
Where we work
Next door to Dunn Loring: Vienna, Falls Church, McLean, Annandale and Oakton.
Questions
Often not on its own. Fairfax County says most policies need a special rider for sewage backups or water damage, usually only if you ask.
Fairfax County Fire and Rescue says only when the water reaches or nears outlets or the electrical panel, or threatens the pilot or power to a water heater or furnace. Otherwise shut the water off and call a plumber.
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 Dunn Loring 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.