Open 24/7 for emergencies
A boiler tune-up in McLean is $99 and a new boiler runs $9,900 to $16,500 installed, in the town where we see boilers most.
Price range
$9,900-$16,500
8yrs @ 7.99%
$140/mo
15yrs @ 9.99%
$106/mo
Monthly figures on the starting price, the whole price financed, on approved credit. The lender sets the final terms. How financing works
Get your price in writing
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5.0 stars across 1,132 reviews
Two of our heating technicians in a Northern Virginia basement. The same team tunes up, repairs and replaces boilers.
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 HVAC installersA dedicated heating and cooling team, separate from our plumbers
Price in writing firstYou see every option priced before anything is ordered
What it costs
A new boiler runs $9,900 to $16,500 installed, the range of our own boiler replacements; a condensing or combi boiler lands at $12,782 to $16,500. A tune-up is $99 a system.
High-efficiency condensing boiler or combi boiler, installed
$12,782 to $16,500
or $213/mo at 0% APR for 60 months
Cast iron boiler on the chimney, replaced like for like, installed
$9,900 to $13,690
or $165/mo at 0% APR for 60 months
Boiler tune-up, one system
$99
Boiler repair diagnostic visit
$99
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
A repair starts with the $99 diagnostic. If the fix is a circulator pump, a valve or an expansion tank, you get that price in writing before we start, and you decide.
Want a closer number before anyone comes out? The boiler estimator asks a few questions about yours and shows the range for that job.
What’s different in McLean
McLean is where we see boilers most. Hot-water heat is a regular part of our McLean heating work, far more than anywhere else we go. It follows the age of the houses. Across ZIPs 22101 and 22102 the typical owner’s home went up in 1978, and in 22101 alone 56 percent of the homes were built between 1950 and 1979. Those brick colonials and split-levels are where the radiators and the baseboard are.
Most of our McLean boiler calls turn out to be about the parts around the boiler rather than the boiler. A house split into zones has a valve or a circulator for each one, and those wear out long before cast iron does. A boiler that fires and runs while the radiators stay lukewarm usually means the water isn’t moving. The $99 diagnostic names the part, and the repair gets a written price before anyone drains a loop.
Replacing one here usually comes down to the chimney. A cast iron boiler vented into the chimney can go back in on the same flue, and that kind of swap sits at the low end of $9,900 to $16,500 installed. A condensing boiler moves the venting out the wall in white plastic pipe and runs $12,782 to $16,500 installed. In the bigger houses, the ones with nine rooms or more, a heat-only boiler with its own water heater usually keeps up better than a combi when several showers run at once.
About two in three owner homes in McLean heat with gas, so a fall tune-up at $99 starts with the burner, the flame and the gas pressure, then the system pressure, the expansion tank and the circulator. About four in ten owner homes here are condos and apartments, many in the Tysons towers, and a boiler in one of those buildings is usually the association’s, not yours.
Neighborhood by neighborhood
Census figures for the owner-occupied homes in each place, and what a boiler call there usually meets.
| Place | Median home built | Most homes are | Heated with | What a boiler call usually meets |
|---|---|---|---|---|
| McLean | 1977 | single-family houses, about 8 in 10 | gas, about 7 in 10 | Older houses, where cast iron boilers and radiators still turn up. |
| Tysons | 1985 | condo and apartment buildings, about 7 in 10 | electricity, about 5 in 10 | Condo buildings: mostly electric heat; a central boiler belongs to the building. |
By the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
ZIPs 22101 and 22102 as a whole: every McLean address, Tysons included.
What it’s telling you
In plenty of 1950s and 60s McLean houses the boiler and the water heater vent up one chimney. When the boiler goes condensing and leaves, the water heater is alone on a flue sized for two, and the written price says what that flue needs.
An aging Peerless cast iron boiler in a Northern Virginia basement, chimney vented, on a SwiftPro service call.
Safety and paperwork
Fairfax County requires a permit to replace any gas appliance, even like for like: a gas water heater, furnace or boiler. Replacing a fuel-burning appliance also needs a chimney vent certification. Source.
Fairfax County lists replacing a heating or cooling system as mechanical permit work. Source.
Fairfax County Fire and Rescue names a faulty gas furnace or water heater as a carbon monoxide source, says to have gas appliances inspected every fall, and to put a CO alarm on every floor. Source.
Fairfax County Fire and Rescue says to have the heating system cleaned and checked by a professional every year, and to keep anything that burns at least three feet from the furnace and the water heater. Source.
Our Virginia Class A contractor license, 2705192276, is on the side of the van.
Choosing who works on it
Questions to ask anybody who quotes you, us included.
A McLean boiler split into zones has a lot of small parts that give out before the boiler does. Ask whoever comes out to name the one that failed and price that, before anyone talks about a new boiler.
A hot water boiler is half heating system (the burner, gas valve, flue and controls) and half plumbing (the water loop, circulator pumps, expansion tank, relief valve and zone valves). We hold a Virginia Class A license and run separate heating and plumbing teams, so each half gets a tech who does that trade every day.
A new boiler can stay on the chimney or vent out the wall in plastic pipe. A good quote says which, and whether the chimney needs a liner, because that’s where two quotes for the same boiler usually split.
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.
…excellent service when my boiler needed to be replaced during the polar vortex. Alex Hittle came quickly, … and replaced my boiler quickly. Alex even managed to change their schedule, with the kind permission of their other customer so that I could have heat again in the freezing weather.
Where we work
Next door to McLean: Dunn Loring, Vienna, Falls Church, Arlington and Great Falls.
Questions
Yes, more than anywhere else we go. We work on hot water boilers on gas or propane: tune-ups at $99 a system, repairs after the $99 diagnostic, and replacements at $9,900 to $16,500 installed.
Yes. A McLean house heated by radiators or baseboard usually has no ducts, so the cooling is ductless mini splits, and plenty of people run them for the mild weeks too and save the boiler for the cold ones.
No. We work on hot water boilers, the kind that heat radiators or baseboard, on natural gas or propane. If yours is steam or burns oil, we’ll tell you on the phone, and a switch to a heat pump or a gas or propane boiler is ours to price.
Ready when you are
Call any time: we run 24/7 emergency service. Or send the form at the top. A tune-up is $99, a repair starts with the $99 diagnostic, and a new boiler gets a written price before any work.
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 McLean 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.