Brown water at the start of a hot shower
On a well with iron, rust and sediment settle at the bottom of the tank and stir up when it heats. A flush clears what’s loose. If it comes back fast, the water needs treatment ahead of the heater.
Clifton, Virginia: 20124
Water heater flush in Clifton.
Tank flushes and tankless descales in Clifton, 20124, for well water and Fairfax Water alike. A tank flush is $99 right now.
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- Tank or tankless, any brand
- Priced before we start
- Pay after the visit
5.0 stars across 1,132 reviews
Two of our technicians in a customer’s basement, next to the furnace and a tank 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
What a water heater flush costs in Clifton.
Same prices as our water heater flush page, anywhere in Northern Virginia, and you pay after the visit.
Tank water heater flush, with the plumbing check
$99, normally $199
Tankless descale, with the plumbing check
$300, regularly $350
Comfort+ membership, a water heater flush with a sewer camera inspection every year included
$199 a year
Both visits include a whole-home plumbing check: supply lines, shutoffs, a pressure reading, drains, toilets and traps.
One per household, owner-occupied homes, limited time. A leaking tank, or one that’s 15 years old, needs repair or replacement, not a flush.
More for the money: Comfort+ membership, $199 a year, includes the flush and its plumbing check every year, plus a sewer camera inspection, a dryer vent cleaning and heating and cooling maintenance visits.
What’s different in Clifton
A Clifton flush schedule starts with whether your water comes from a well.
Most flush advice assumes a utility report, and a lot of Clifton doesn’t have one. The Town’s plan says its houses draw from private wells, and the big lots on Clifton, Compton and Yates Ford Roads were rezoned in the 1980s with no public water planned, so the hardness in your tank is whatever the ground puts there. The county Health Department wants well water tested every year; ask for hardness and iron on the same test and you have the number a flush schedule should follow.
When the Town asked, the Health Department called its well water relatively good, with some high iron. Iron settles alongside the scale, so a well tank in town tends to drain rusty brown at the start of a flush rather than white and gritty. If your house is on Fairfax Water instead, its 2025 plant readings ran 3 to 10.8 grains per gallon, and once a year is the schedule.
Treatment changes the math. A softener ahead of a tankless slows the scale down. An acid neutralizer works by dissolving calcium into the water, which can make a tankless scale faster, not slower. The Health Department asks well owners to keep an eye on any softener, neutralizer or UV light, so tell us what’s on your line when you book.
About half the owner homes in the Census tract around the town heat with electricity, which usually puts electric elements in the water heater instead of a burner. Those tanks don’t pop and rumble the way a burner does; the sediment piles over the lower element and the first sign is a shower that goes lukewarm early. We test that element while the tank is drained.
By the numbers
Clifton houses, by the numbers
From the Census Bureau’s 2020 to 2024 survey. Median year built and heat count owner-occupied homes only.
The Fairfax County side of 20124
Clifton mail outside the town: five- to ten-acre lots in the Occoquan watershed on Clifton, Compton and Yates Ford Roads, mostly on septic, and the 1980s subdivisions off Springstone Drive and Union Mill Road on county sewer.
ZIP 20124 as a whole, the Town included: its own homes are too few for steady Census figures.
- Median home built1988 Census
- Built before 1980about 1 in 10 Census
- Built since 2000about 1 in 10 Census
- Most homes aresingle-family houses, about 8 in 10 Census
- Heated withgas, about 6 in 10 Census
- Rentedabout 1 in 10 Census
- Outside the town line, in Fairfax County, about 6 in 10 owner homes heat with gas. If the water heater is gas too, the flush includes a look at the burner and the vent.
When it’s due
Why people in Clifton book a flush.
It pops or rumbles
That’s water boiling under a layer of sediment on the bottom of the tank. A flush clears it out.
Nobody knows when it was last done
Which is most houses. The drain valve at the bottom of the tank has usually never been opened.
Choosing who does it
How to pick who flushes your water heater in Clifton.
Questions worth asking anybody you call, us included.
Will they ask what’s between your well and the heater?
A softener, an acid neutralizer or an iron filter changes what builds up in a tank or a tankless, and a well tank collects different grit than a Fairfax Water one. Whoever you call should ask, and should show you what drains out.
Do they check the anode rod and test the relief valve?
The anode is the part that corrodes so the tank doesn’t, and the relief valve is the tank’s safety valve. A flush that skips both is just draining water.
On a tankless, do they pump descaler through it?
A real descale isolates the heater at its service valves and pumps solution through the heat exchanger, then rinses it and cleans the inlet screen.
Two of our crew going over a work order before the day's calls.
From our Google reviews
What our customers say.
5.0 stars across 1,132 reviews. Read them on our reviews page.
I am very happy with the service I received in installing my water heater. Tyson and the crew were very kind and cleaned everything up before they left. I would really recommend this company.
Where we work
Water heater flush in every Northern Virginia town we serve
Next door to Clifton: Fairfax Station, Burke, Manassas, Centreville and Fairfax.
Fairfax County
Arlington County
Loudoun County
Prince William County
Fauquier County
Stafford County
Questions
Water heater flush questions from Clifton.
How hard is Clifton’s water?
It depends on the source. On Fairfax Water, the 2025 plant results ran 3 to 10.8 grains per gallon. On a private well there’s no published number at all, so the yearly test the county recommends is where your number comes from; add hardness and iron to it.
Our well was just shock chlorinated. Should the water heater be flushed?
Fairfax County’s own steps for disinfecting a well have you drain the water heater and let it refill, so the tank is half done already. A full flush afterward carries out the sediment that a drain and refill stirs up but leaves behind, and the tech checks the anode and the relief valve while it’s empty. The well is your well contractor’s; the heater is ours.
Do you flush propane water heaters?
Yes. A propane tank flushes like a natural gas one: the burner goes to pilot, the cold supply closes and the sediment drains from the bottom. About one owner home in ten around the town burns propane, so mention it when you book.
How much does a water heater flush cost in Clifton?
$99 right now for a tank, normally $199, with a whole-home plumbing check. A tankless descale is $300 right now, regularly $350. Comfort+ membership, $199 a year, includes the flush every year.
Ready when you are
Book the flush, tank or tankless.
Call, or send the form at the top. Tell us tank or tankless, and the tech brings the right gear.
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 Clifton 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.