Open 24/7 for emergencies
Flushing a tank water heater in Delaplane costs $99 right now, plumbing check included. With no water company here, your own well decides how often.
Get your price in writing
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Rather talk now? (703) 997-9757
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
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 Delaplane
Most flush pages start with the water company’s hardness number. Delaplane doesn’t have a water company to ask. FCWSA, Fauquier’s water authority, lists sixteen systems in its 2025 report and none of them reaches 20144; the nearest draws from two wells up Route 17 in Paris. Your water comes up from your own well, nobody publishes a hardness figure for it, and the only number that counts is the one from a test of your own tap.
What’s in that water starts in the rock. Under the village, the geologic map shows Cobbler Mountain alkali feldspar quartz syenite, a hard crystalline rock, and the U.S. Geological Survey finds groundwater levels lowest in the crystalline Blue Ridge rock of Fauquier’s northwest. FCWSA says groundwater in the county runs down through the summer and starts recharging around October 1, and that its own wells can turn out harder water, or water tinted by natural iron and manganese, when they pump long hours in summer. Whatever a well brings up settles on the floor of the tank, right over the burner or the lower element.
Virginia Cooperative Extension’s Fauquier well clinics give the closest thing to a local picture: 97 household samples from 2012 to 2017, where low pH, iron and manganese were among the most common problems. In a heated tank, iron settles as orange-brown silt and manganese as black specks, and a flush carries both out the drain valve. Acidic water can also wear the tank’s anode rod faster, so the flush includes a look at it. Most clinic households already had some treatment, usually a sediment filter, which stops sand but not iron dissolved in the water.
How the house gets used matters too. The state’s 2004 survey of the Crooked Run Valley, Delaplane included, found many of its late twentieth century houses lived in only on weekends or by season, and a tank that sits for weeks between visits still gathers sediment, with nobody around to hear it rumble. In the three houses in ten heated by electricity the water heater is usually electric as well, and its lower element is the first part to get buried. On a propane tank, the burner and its flue get a look while it’s drained.
By the numbers
From the Census Bureau’s 2020 to 2024 survey. Median year built and heat count owner-occupied homes only.
When it’s due
Orange or black at the hot tap only, with the cold running clear, usually means iron or manganese sitting in the bottom of the tank. A flush clears what’s there. A water test tells you whether a filter ahead of the heater would keep it from coming back.
That’s water boiling under a layer of sediment on the bottom of the tank. A flush clears it out.
Which is most houses. The drain valve at the bottom of the tank has usually never been opened.
Choosing who does it
Questions worth asking anybody you call, us included.
On a well, the filter or softener ahead of the water heater decides a lot of what reaches it. Ask whether they’ll look at the cartridge and take a pressure reading on the way in, not just open the drain valve at the end.
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.
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
5.0 stars across 1,132 reviews. Read them on our reviews page.
Zabi did a great job. Fill valve, flush valve and gaskets replaced on this 30-yr-old toilet. No leaks, no run-on.
Where we work
Next door to Delaplane: Rectortown, Upperville, Marshall, The Plains and Orlean.
Questions
Not a public one. With no utility serving 20144, no annual report covers your water, so the number has to come from a test of your well, by a certified lab or one of the Extension’s county clinics. Until then the tank itself is the record: how much comes out on the first flush says a lot.
If the test shows hard water, yes, about once a year, because scale builds inside a tankless heat exchanger faster than in a tank. If the water is soft but carries grit, the inlet screen is the first thing to clog. A descale is $300, regularly $350, and it covers both.
$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
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 Delaplane 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.