Heating, cooling and plumbing in Vienna, inside the town line and out.
A Vienna address can be the Town or Fairfax County, on Town water or Fairfax Water. What we find in Vienna houses, what it costs, and who signs off.
- Prices in writing, first
- Dedicated HVAC and plumbing teams
- Virginia license #2705192276
Get your price in writing
The 1950s houses and the infill, with little in between.
Inside the town line, about two in ten homes went up before 1960 and a quarter since 2000. Only about one in ten dates from the 1980s and 90s.
The older stock sits on the streets off Maple Avenue and Church Street: houses from the 1950s, 60s and early 70s, the town’s median built in 1972. That’s where we find galvanized steel supply on the oldest streets, cast iron drains, and a gas furnace and gas water heater venting up one shared chimney. About eight in ten owner homes in the town heat with gas.
The newer stock is infill, built on lots in a town that was already built out, and the Town keeps a separate permit track for it. Those houses are bigger, often with two systems, PEX supply and a laundry room upstairs, and the ones built in the early 2000s are now old enough for their first furnace, AC and water heater to be wearing out.
Outside the town line, Wolf Trap is nearly all single-family houses from the 1970s and 80s, and Dunn Loring is mostly single-family too, its median house built in 1977. Many of those went up in the polybutylene years for supply pipe, and most are on their second or third furnace.
One company for the furnace and the pipes.
A dedicated HVAC team and a dedicated plumbing team, working out of our shop in Chantilly.
Heating
Mostly gas furnaces, with electric heat, usually a heat pump, in about two in ten Wolf Trap homes. In the older town houses the furnace shares a chimney with the water heater, which matters the day either one gets replaced. Our Vienna furnace repair page prices the common repairs.
Cooling
Most Vienna cooling is a central air conditioner outside a gas furnace, the two sharing one blower. The rebuilt houses often run a second system for the upstairs. AC repair, duct cleaning and dryer vent cleaning each have a Vienna page of their own.
Plumbing
The Town’s 2024 survey of its water service lines found copper almost everywhere and no lead, but a house built before 1960 can still have galvanized pipe inside the walls. Cast iron drains run under most houses from before 1980.
Prices first, then the work.
Our prices are the same in every town we serve, and you get the number in writing before any work starts.
- AC run capacitor replaced$240 to $370
- Refrigerant topped up$190 to $740
- Condensate drain cleared$175 to $420
- Repair diagnostic visitabout $99
- Drain cleaning, one fixture$200 to $800
- Main sewer line cleaning$550 to $1,650
- Leak detection$200 to $500
- Pressure reducing valve replacement$500 to $1,000
- Water heater, tank, installed$2,757 to $7,494
These come straight from the price book on our plumbing page and our AC repair page. Replacing a water heater? The water heater estimator prices yours, permit included, in about a minute.
Replacing a furnace or an air conditioner? The HVAC estimator gives you the installed range for your house size first.
Town or county changes your water and your sewer.
Your water
Inside the town and on some streets outside it, the Town of Vienna sells the water, bought from Fairfax Water and the Washington Aqueduct. Its 2025 report calls it moderately hard to hard, 5 to 10 grains per gallon. Elsewhere it’s usually Fairfax Water direct; the name on the water bill settles which.
Reports: Town of Vienna (Fairfax Water and Washington Aqueduct water), 5 to 10 gpg; Fairfax Water, 3 to 10.8 gpg.
Your permit office
Fairfax County on both sides of the line. It serves as the Town’s building official, so mechanical and plumbing permits come from the county even inside the town, and a gas furnace or gas water heater needs one even like for like. The Town’s own Planning and Zoning review covers its list, from additions and decks to basement renovations.
Permit pages: Fairfax County.
Your sewer line
On Town sewer, the owner signs on to maintain the connection from the Town’s main to the house, and the water line from the meter in as well. In the county, Fairfax County’s code puts the whole lateral on the homeowner, street included.
Sources: the Town of Vienna’s water and sewer agreement and Fairfax County Code 65-6-5.
What our customers say.
I reached out to them after 6 pm when our AC unit stopped cooling the house and they had someone out the next morning.
I placed an emergency call for pipes that had frozen and burst in my bathroom in the very early morning.
They came out same day in only a matter of a few hours of calling for service.
5.0 stars across 884 Google reviews. Read them on our reviews page.
Voted a Nextdoor Neighborhood Faves winner two years running: 2026 in 30 Northern Virginia neighborhoods, 2025 in Emerald Chase (Herndon) and Hunters Run (Chantilly).
Listed in both the HVAC and Plumbing categories of Northern Virginia Magazine’s Best Home Experts directory, which is exactly how we’re built: a dedicated HVAC team and a dedicated plumbing team.
The town, and the county streets with Vienna mail.
Inside the town line: Windover Heights and the streets off Maple Avenue and Church Street, nearly all of it in 22180. On the county side: Wolf Trap and the Tysons edge in 22182, the Oakton side of 22181, and Dunn Loring. Next door:
Vienna questions.
Is a Vienna address always in the Town of Vienna?
No. Nearly the whole town sits in 22180, but 22180 also covers county streets in Dunn Loring and Merrifield, and 22181 and 22182 are almost entirely Fairfax County. Even a Town water bill isn’t proof: about a third of the Town’s water customers live outside its limits. SwiftPro works both sides of the line at the same prices.
Who issues permits inside the Town of Vienna?
Fairfax County. It serves as the Town’s building official and reviews the mechanical, plumbing and electrical work, so a gas furnace or gas water heater swap takes a county permit even like for like. The Town’s Planning and Zoning department reviews its own list on top, such as additions, decks and basement renovations, and Windover Heights has a Board of Review for exterior changes. SwiftPro’s water heater estimator includes the permit in every price.
How hard is the water in Vienna?
The Town of Vienna’s 2025 report calls its water moderately hard to hard, 5 to 10 grains per gallon, a blend it buys from Fairfax Water and the Washington Aqueduct. Fairfax Water’s own 2025 figures ran 3.0 to 10.8. Either way a tank water heater collects scale, so SwiftPro tells Vienna homeowners to flush it every year.
Who pays for a leak between the meter and my house?
On Town of Vienna water, you do: the Town puts leaks between the meter and the property on the owner. Keep the plumber’s paid receipt, because the Town will credit the extra water use on your bill once every five years when you send one in.
My Vienna house is a rebuild. Is the sewer line new too?
Not always. The Town lets a builder reuse the old lateral between its main and the property line when a licensed plumber certifies the pipe is graded properly and in like new condition, so part of a new house’s sewer can be decades old. A camera down it tells you, and SwiftPro adds one to a visit it’s already making for $89.
Inside the town line or out, call us.
Say your street and we’ll tell you what’s typical for houses like yours, what it usually costs, and when we can be there.
SwiftPro Heating, Cooling & Plumbing is a licensed, BBB Accredited (A rating), independently owned heating, cooling and plumbing company serving Northern Virginia, including Vienna, Oakton, McLean and Fairfax. SwiftPro holds Virginia contractor license #2705192276, is a Trane Comfort Specialist, Rheem Pro Partner and Mitsubishi Diamond Contractor, holds 5.0 stars across 884 Google reviews, was voted a Nextdoor Neighborhood Faves winner two years running, for 2026 in 30 Northern Virginia neighborhoods and for 2025 in Emerald Chase (Herndon) and Hunters Run (Chantilly), and is listed in both the HVAC and Plumbing categories of Northern Virginia Magazine’s Best Home Experts directory. SwiftPro maintains a dedicated HVAC team and a dedicated plumbing team. More at goswiftpro.com.
In Vienna, SwiftPro repairs and replaces furnaces, heat pumps, air conditioners and ductless mini-splits, cleans air ducts and dryer vents, and handles plumbing from drains and leaks to water heaters and sewer lines, inside the Town of Vienna and on the Fairfax County side.
SwiftPro Heating, Cooling & Plumbing, 4230 Lafayette Center Dr, Suite N, Chantilly, VA 20151, (703) 997-9757. Every town we serve is on the town-by-town guide.