Open 24/7 for emergencies
Our office is on Endicott Drive, and about seven in ten Ashburn homes went up after 2000. Replacing that first tank water heater runs $2,778 to $7,494. Call SwiftPro, rated 5.0 stars across 1,138 reviews, at (703) 997-9757, 24 hours a day, 7 days a week.
Price range
$2,778-$7,494
8yrs @ 7.99%
$39/mo
15yrs @ 9.99%
$30/mo
Monthly figures on the starting price, the whole price financed, on approved credit. The lender sets the final terms. How financing works
Tell us your neighborhood and what the system is doing, and we’ll call back with a number.
Need a plumber in Ashburn? Our plumbing team has its own Ashburn page, and so do drain cleaning, leak and pipe repair and water heater repair in Ashburn, each with its prices on it. One town over, air duct cleaning in Sterling has a page of its own.
5.0 stars across 1,138 reviews
Two of our technicians wiring a new furnace in an Ashburn basement, February 2026.
Get your price in writing
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Rather talk now? (703) 997-9757
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.
Dedicated HVAC and plumbing teamsA dedicated HVAC team and a dedicated plumbing team, under one roof
Prices in writing, firstYou get the number in writing before any work starts
The record in Ashburn
SwiftPro has 5.0 stars across 1,138 reviews on Google, Angi, Yelp, the BBB and Facebook, holds Virginia contractor license 2705192276 and is BBB Accredited with an A rating. Each job is written from the technician’s own notes on a visit in Ashburn. Each name is someone an Ashburn customer wrote about in a review.
A furnace drain safety switch
A condensate trap with a float switch, wired into the furnace’s control board so a clogged drain shuts the furnace off before water reaches the floor. Then the heating inspection: gas checked, flame sensor cleaned, filter checked, and a blower wheel dirty enough to need a proper cleaning.
A water heater expansion tank
A 2-gallon thermal expansion tank replaced on the water heater. The water pressure read 50 psi, and the new tank’s air charge was pumped up to match it.
Moises, HVAC technician
“He was very knowledgeable and explained what he was doing step by step.”
Xavi, plumber
“Xavi got my natural gas grill hooked up quickly and without any issues.”
What’s in an Ashburn house
Much of Ashburn went up in the same few years, so original equipment tends to wear out on the same schedule. Fewer than three Ashburn homes in a hundred are older than 1980.
20147, where Ashburn Farm, Ashburn Village and Belmont are, came first. Its median owner-occupied home dates to 2001, about four in ten of its homes went up in the 1980s and 90s, and about a quarter are condos and apartments. Houses from the late 80s and early 90s fall inside the years grey polybutylene supply pipe went into Northern Virginia homes, so it’s worth knowing what yours is plumbed with.
20148, Brambleton and Broadlands among it, is the newer half: a median owner home from 2011, nearly nine in ten homes built since 2000, and about four in ten of them townhouses. That age means many of its furnaces, air conditioners and water heaters are likely still the ones the builder put in.
The newest corners are One Loudoun, Moorefield and Goose Creek Village, each with a median owner home from 2014 or 2015, and townhouses lead in all three. Propane is rare in Ashburn except in Goose Creek Village, where about one owner in ten heats with it.
One of our plumbers testing the backflow preventer in an Ashburn basement, April 2026.
What we fix in Ashburn
A dedicated HVAC team and a dedicated plumbing team, with an office on Endicott Drive in Ashburn, and our main office and our plumbing and water heater shop on Lafayette Center Drive in Chantilly. More of our Ashburn visits are about replacing a heating and cooling system than in any other town where we work regularly, and water heaters come up more than almost anywhere.
Ashburn’s heating and cooling service calls lean toward winter more than any other town’s. About eight in ten owner homes heat with gas and most of the rest with electricity, usually a heat pump. A few burn propane, and we work on propane furnaces too. Our Ashburn furnace repair page prices the common repairs.
Many outdoor units put in during the 2000s run on R-22, a refrigerant whose U.S. production and import ended in 2020; the nameplate on the unit says which one yours takes. Everyday repairs are priced on our Ashburn AC repair page, and duct cleaning and dryer vent cleaning each have an Ashburn page of their own.
Builder tanks from the 2000s are now past a typical tank’s working life, and Ashburn’s water is hard enough to leave scale in every one of them. Water heater replacement and the yearly flush are both priced on our Ashburn pages. If your house went up in the late 80s or early 90s, our polybutylene guide covers what to look for.
What it costs
Ashburn pays what every town we serve pays, and you have the number in writing before anyone picks up a tool.
In Ashburn, a new furnace and air conditioner installed together runs $8,898 to $23,000, and a heat pump system runs $8,499 to $21,650. The size of the house and the efficiency you pick set where yours lands.
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
Prices checked .
Each line comes off the price book behind our plumbing page and our AC repair page. For a new water heater, the water heater estimator puts the Loudoun County permit inside the number.
If the furnace or the air conditioner is the one the house came with, the HVAC estimator gives the installed range for your square footage first.
The new-system ranges are the same price book as our HVAC replacement page, and the HVAC estimator narrows yours to the house before anyone comes out.
Ashburn paperwork
Ashburn homes on public water buy it from Loudoun Water. It doesn’t print a hardness number; for current figures it sends you to Fairfax Water’s Corbalis plant on the Potomac, part of its supply, which averaged about 7.5 grains per gallon across 2025 and topped out at 10.8.
Reports: Loudoun Water, points you to Fairfax Water’s figures.
Ashburn is unincorporated, so every permit comes from Loudoun County. Replacing a gas furnace or a gas water heater, propane included, still takes a county gas permit. Since October 1, 2025, new gas work needs plan review, but a replacement that doesn’t add BTUs or move the appliance is spared it. An electric unit replaced where it stands is exempt under Virginia’s building code.
Permit pages: Loudoun County.
From the house to the edge of the public right of way, the sewer pipe is yours to keep clear and repair. Past that line only Loudoun Water digs, and when a plumber replaces your section, a Loudoun Water inspector sees it before the trench is backfilled. The pressure reducing valve where the water line enters the house is yours too.
Sources: Loudoun Water’s sewer guidance and Loudoun Water’s rules and regulations and Loudoun County’s October 2025 gas permit notice.
From our Google reviews
Of the 12 Loudoun County companies licensed for both heating and plumbing, we're rated highest on Google once you account for how many reviews each one has. See the whole list.
Tyler and Moises were highly professional from start to finish, wearing boot covers to respect my home, and thoroughly explaining their findings. I went with their quote, the best price I got, to replace my entire furnace and air conditioning unit.
Our water heater died on Friday night around 7:30pm. We called SwiftPro, and by 10pm we had quotes, a phone call explaining the options, followed by a signed contract and an appointment to have a new one installed Saturday morning. We’ve also used SwfitPro before for HVAC services, and each time they have been quick to respond, always pleasant to deal with, thorough in their work, and competitive and fair in their pricing.
Excellent experience from beginning to end. Prompt response when our AC went out on a 93-degree day. The technician explained the issues and did not try to upsell me on anything I didn’t need. Highly recommend.
5.0 stars across 1,138 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). Two of the 2026 neighborhoods, Brambleton Rising Moon and Willowsford Grant, carry Nextdoor’s Ashburn label.
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.
Named BusinessRate’s Best of 2026: the #1 heating contractor in Fairfax, Virginia, ranked on Google reviews. See our BusinessRate score.
In Ashburn, SwiftPro’s vans come out most for replacement estimates, heating and cooling repairs and plumbing repairs.
Ashburn is 3 miles from SwiftPro’s Ashburn shop, and the van that comes to you is coming from the last job, not from the shop. SwiftPro charges no distance fees anywhere it serves.
HVAC service near you: every town we serve, what each job costs, and the miles from our two shops.
SwiftPro came out same day to assess my system, provided a diagnosis and a quote to me on that initial visit and within 24 hours I had a completely new installed Carrier HVAC system.
Where in Ashburn
In 20147: Ashburn Farm, Ashburn Village and Belmont. In 20148: Brambleton and Broadlands. Also Ashburn mail: One Loudoun, Loudoun Valley Estates, Moorefield, University Center and Goose Creek Village. Our office: 44679 Endicott Dr, Suite 211, Ashburn, VA 20147. Next door:
The system we put in first
Built to take a beating. Put in by our crew.
Heat lamps, snow and rain on one outdoor unit: that’s Trane’s own film. We’re a Trane Comfort Specialist, on Trane’s own dealer locator, and when you pick a Trane, our crew puts it in.
Films: Trane’s own.
Asked out loud
SwiftPro Heating, Cooling & Plumbing. Here’s what you can check: Virginia contractor license 2705192276, BBB Accredited with an A rating, and 5.0 stars across 1,138 reviews. It was named BusinessRate’s Best of 2026, the #1 heating contractor in Fairfax, Virginia. From an Ashburn heating and cooling job in October 2026: A condensate trap with a float switch, wired into the furnace’s control board so a clogged drain shuts the furnace off before water reaches the floor. Then the heating inspection: gas checked, flame sensor cleaned, filter checked, and a blower wheel dirty enough to need a proper cleaning. An Ashburn customer on Moises, one of our HVAC technicians: “He was very knowledgeable and explained what he was doing step by step.” We answer day or night, and we will tell you honestly when we can get there.
SwiftPro Heating, Cooling & Plumbing. Ask any plumber for a license number, a public record and work in your town. Ours: Virginia contractor license 2705192276, BBB Accredited with an A rating, and 5.0 stars across 1,138 reviews. From an Ashburn plumbing job in October 2026: A 2-gallon thermal expansion tank replaced on the water heater. The water pressure read 50 psi, and the new tank’s air charge was pumped up to match it. An Ashburn customer on Xavi, one of our plumbers: “Xavi got my natural gas grill hooked up quickly and without any issues.” We answer day or night, and we will tell you honestly when we can get there.
Yes, a staffed office at 44679 Endicott Drive, Suite 211, Ashburn, VA 20147, with directions on Google Maps. It’s the same company and the same dedicated HVAC team and dedicated plumbing team as our shop at 4230 Lafayette Center Drive in Chantilly. We answer around the clock at (703) 997-9757.
For mail, yes: both use Ashburn’s 20148 ZIP code, and like the rest of Ashburn they sit in unincorporated Loudoun County. That means Loudoun County permits and, for homes on public water, Loudoun Water. SwiftPro charges the same prices there as in every other town it serves.
It depends on the association and on where the unit goes. Brambleton’s Design Review Guidelines need no application to replace an air conditioner or heat pump in its original spot, on brackets or a pad; adding one or moving one needs approval first, and a unit you can see from the street or next door needs screening. Ashburn Farm keeps its standards behind a members’ login, so check yours before a unit goes somewhere new.
Yes, a Loudoun County gas permit, even when the new tank matches the old one. Since October 2025 a swap that keeps the same BTUs in the same spot skips the plan review, but not the permit. An electric tank replaced in place is exempt under Virginia’s building code. SwiftPro’s water heater estimator counts the permit in every price.
Often, yes. A failed capacitor at $240 to $370 or a blocked condensate drain at $175 to $420 is worth fixing on almost any unit. The harder call is a refrigerant leak on an R-22 system: production of R-22 has ended, so a leak that keeps coming back is usually where the replacement conversation starts. SwiftPro tells you which side of that line yours is on, in writing.
Ready when you are
Say the neighborhood and roughly when the house went up. We’ll tell you what usually wears out first in a house that age, what it costs, and when we can be there.
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 serving Northern Virginia, including Ashburn, Sterling, Leesburg and Chantilly, from its main office and its plumbing and water heater shop in Chantilly and its office in Ashburn. SwiftPro holds Virginia contractor license #2705192276, is a Trane Comfort Specialist, Rheem Pro Partner and Mitsubishi Diamond Contractor, holds 5.0 stars across 1,138 reviews on Google, Angi, Yelp, the BBB and Facebook, 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), was named BusinessRate’s Best of 2026, the #1 heating contractor in Fairfax, Virginia, 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 Ashburn, SwiftPro repairs and replaces gas and propane 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, across 20147 and 20148.
SwiftPro Heating, Cooling & Plumbing, 4230 Lafayette Center Dr N, Chantilly, VA 20151, and 44679 Endicott Dr, Suite 211, Ashburn, VA 20147, (703) 997-9757. Every town we serve is on the town-by-town guide.