How old is your CO alarm?
Flip it over. If the date is past the seven-year mark, replace it before the next cold snap.
Warrenton, Virginia
Water heater repair in Warrenton.
For water heater repair in Warrenton, the plumbing visit to find what’s wrong is $49, or $250 after hours. Call SwiftPro, rated 5.0 stars across 1,130 reviews, at (703) 997-9757, 24 hours a day, 7 days a week.
SwiftPro’s plumbers in Warrenton are rated 5.0 stars across 1,130 reviews and work under Virginia Class A contractor license 2705192276. Water heater repair in Warrenton: mostly gas tanks in town, so the fix starts with the pilot, the draft and a carbon monoxide alarm that works. The repair, a thermocouple, a gas valve, an element or a thermostat, is priced in writing at the tank before we start.
- The failed part named before the price
- Our own licensed plumbers
- Fired up and tested before we leave
5.0 stars across 1,130 reviews
Two of our plumbers at a gas water heater in a Northern Virginia basement.
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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
What it costs
What water heater repair costs in Warrenton.
The visit fee is the same one on our plumbing price list. What usually fails, and when it’s the tank itself, is in our water heater repair guide.
Plumbing diagnosis visit
$49
Plumbing diagnosis visit, after hours
$250
Water heater repair (thermocouple, gas valve, element, thermostat, burner)
Priced in writing at the tank, before we start
Prices checked .
Where the repair lands depends on the part: a thermocouple or an element is a short job, a gas control valve takes longer and costs more, and either way you see the number before we start.
Water coming out of the tank body itself can’t be repaired. That’s a replacement, and the installed prices for one are on our water heaters page.
What’s different in Warrenton
In Warrenton, most tanks burn gas, so a repair visit includes the exhaust.
About six owner homes in ten inside the Town of Warrenton heat with gas, and the water heater usually does too. A gas tank that won’t stay lit has a short list: the pilot assembly, the thermocouple, the gas control, or a draft that blows the flame out. We test those in order, and before we leave we check that exhaust is leaving the house and not drifting in.
That’s why the Warrenton Volunteer Fire Company’s home safety checklist matters. It asks for a carbon monoxide alarm on every level of the home, none of them more than seven years old. A gas tank in a closet or a cellar corner is part of the reason for that alarm. Turn yours over and read the date.
About a fifth of the owner homes in town are townhouses, and another quarter are in small buildings or condos, so plenty of tanks live in closets. A closet tank needs air to burn and a clear top. Shelving creeps in over the years, and a boxed-in tank can run hot or sooty.
Out in New Baltimore, nearly half the owner homes are gas and about one in seven propane, and nearly half went up since 2000. Newer houses tend to have tanks that need a wall outlet as well as gas, so a tripped breaker is worth a look before we call it a gas problem.
Neighborhood by neighborhood
What fails on water heaters across Warrenton.
Census figures for the owner-occupied homes in each place, and what usually fails on the water heaters in houses like them.
| Place | Median home built | Most homes are | Heated with | What usually fails |
|---|---|---|---|---|
| New Baltimore | 1999 | single-family houses, nearly all | gas, about 5 in 10 | The pilot, the igniter or the vent fan on a gas tank. |
| Warrenton | 1993 | single-family houses, about 5 in 10 | gas, about 6 in 10 | The pilot, the igniter or the vent fan on a gas tank. |
By the numbers
Warrenton houses, by the numbers
From the Census Bureau’s 2020 to 2024 survey. Median year built and heat count owner-occupied homes only.
The Town of Warrenton
Inside the town limits, a little over 4 of the roughly 110 square miles the two Warrenton ZIP codes cover: the Historic District around Main Street, Leeds Square, and the streets off Broadview Avenue and Alwington Boulevard.
- Median home built1993 Census
- Built before 1980about 4 in 10 Census
- Built since 2000about 3 in 10 Census
- Most homes aresingle-family houses, about 5 in 10 Census
- Heated withgas, about 6 in 10 Census
- Rentedabout 4 in 10 Census
- Most houses here heat with gas, and most of those have a gas water heater too, where no hot water usually comes down to the pilot, the thermocouple or the gas valve.
- Most homes here are detached houses with the tank in a basement or garage, where there’s room to work and a floor drain nearby.
The Fauquier County side
New Baltimore only. It’s the one Census place on the county side with mostly Warrenton mail, so the farms and lots beyond it aren’t in these figures.
- Median home built1999 Census
- Built before 1980about 3 in 10 Census
- Built since 2000about 5 in 10 Census
- Most homes aresingle-family houses, nearly all Census
- Heated withgas, about 5 in 10 Census
- Rentedabout 1 in 10 Census
- Newer houses often have a power-vent gas tank, with a fan and a pressure switch on top that can fail on their own.
The signs
When a Warrenton water heater needs a repair.
No hot water at all
On a gas tank that’s usually the pilot, the thermocouple that keeps it lit, or the gas valve. On an electric tank, it’s usually an element or the reset that tripped.
Hot water runs out fast
A shower that goes cold in five minutes often means a failed lower element on an electric tank, or a tank so full of sediment that it heats far less water.
Need water heater repair in Warrenton?
A person answers day and night. See this month’s deals before you call.
Choosing who does it
How to pick who repairs a water heater in Warrenton.
Questions to ask anybody who looks at your tank, us included.
Did they check the exhaust and draft after the repair?
A gas tank that lights isn’t the same as a gas tank that vents. The check takes a couple of minutes and matters more than the part.
Did they name the part before quoting a new tank?
A plumber who goes straight to replacement without testing the thermocouple, the valve or the elements may be selling you a tank you don’t need.
Did they check the relief valve and the venting?
A repair that leaves a stuck relief valve or a bad vent connection behind isn’t finished. Ask what else they looked at while the cover was off.
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 1,130 reviews. Read them on our reviews page.
I had a really pleasant personal experience with Swiftpro when my water heater went out. The pricing was very reasonable compared to the many other HVAC companies I sought quotes from. I highly recommend them
- 5.0stars across 1,130 reviewsHow we count them
- ABBB Accredited, A ratingCheck it on bbb.org
- 2026Voted a Nextdoor Neighborhood Faves winner two years running: 2026 in 30 Northern Virginia neighborhoods, 2025 in Emerald Chase (Herndon) and Hunters Run (Chantilly)See it on Nextdoor
- #1BusinessRate Best of 2026: the top-ranked heating contractor in Fairfax, VirginiaSee our BusinessRate score
- Class AVirginia contractor, license #2705192276Look it up with DPOR
Questions
Water heater repair questions from Warrenton.
Does fixing a gas water heater take a Town permit?
Replacing a gas tank inside the Town does, through the Town’s own Building office, and outside it Fauquier County issues the permit. A part swap on the tank you have is a repair, and we tell you where the line falls.
Is my gas water heater a carbon monoxide risk?
A healthy one isn’t. A flame that rolls out of the top, soot on the tank or a pilot that keeps blowing out are signs to shut it off and call.
How much is water heater repair in Warrenton?
The visit to find what’s wrong is $49, $250 after hours. The repair is priced in writing at the tank, before we start, because a thermocouple and a gas valve are very different jobs.
Should I repair my water heater or replace it?
Repair it when the tank is sound and a part failed. When the tank itself leaks, it’s a replacement, and we’ll show you where the water is coming from before you decide.
Ready when you are
Get the hot water back on.
Call, or send the form at the top. We find what failed, show you the part, and you get the repair price in writing before we touch it.
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
SwiftPro Heating, Cooling & Plumbing is a licensed, BBB Accredited (A rating), independently owned heating, cooling and plumbing company in Chantilly, serving Warrenton and the rest of Northern Virginia. Virginia contractor license #2705192276. 5.0 stars across 1,130 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.