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A furnace tune-up in Herndon is $99 a system. Inside the town about 6 in 10 owners heat with electricity, and a heat pump tune-up is $99 too.
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5.0 stars across 1,132 reviews
Two of our heating technicians in a Northern Virginia basement, beside an open gas furnace.
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
$99 for one furnace, anywhere we work. The tech checks the gas pressure, the temperature rise, the safeties and the sequence of operation, which is the order the furnace lights, heats and shuts down in. A repair it turns up gets a written price first, and you decide.
Furnace tune-up, one system
$99
Heat pump, boiler or ductless mini split tune-up, one system
$99
Comfort+ membership, a heating maintenance visit every fall included
$199 a year
It’s priced per system, so a house with a second furnace for the upstairs is two tune-ups. A heat pump, a boiler or a ductless mini split is the same $99 a system.
With Comfort+ membership, $199 a year or $20 a month covers four visits every year: a heating maintenance visit in the fall, a cooling maintenance visit in the spring, a dryer vent cleaning, and a water heater flush with a sewer camera inspection. We book each one when it’s due.
What’s different in Herndon
About six in ten owners inside the Town of Herndon heat with electricity, which usually means a heat pump outside and an air handler with backup strips indoors. Most of the rest burn gas. Behind a closet door the two look alike, so here’s the quick check: a furnace has a gas pipe running in and a vent pipe, metal or white plastic, running out. An air handler has neither. No pipes? That’s a heat pump system, and its tune-up costs the same as a furnace’s.
Most gas furnaces in the town have been replaced at least once since the houses went up, and one from the last thirty years has a small fan that clears the vent before anything lights. The tech watches that start, the sequence of operation: the fan spins up, a pressure switch confirms the vent is drawing, the igniter glows, the burners catch, the flame is proven, and only then does the blower send warm air out. A step that hesitates in October is often the one that quits on a January night.
Across the county side gas takes over by neighborhood. About seven in ten McNair owners heat with it, and most of McNair went up after 2000, so plenty of those furnaces are the builder’s, near twenty winters in, many of them compact units in condo closets. Floris is about six in ten gas, mostly 1980s and 90s detached houses with the furnace in the basement. Franklin Farm splits close to evenly and Dranesville leans electric, so there the closet question comes first.
Fire and rescue inside the town is Fairfax County’s. Station 4 on Spring Street is a county station, so the county’s furnace advice further down this page holds on both sides of the town line. The county also keeps a limited number of carbon monoxide alarms for residents who need one, and the local fire station comes out to put it up.
Neighborhood by neighborhood
Census figures for the owner-occupied homes in each place, and what that usually means for a tune-up.
| Place | Median home built | Most homes are | Heated with | What the tune-up usually meets |
|---|---|---|---|---|
| Franklin Farm | 1985 | single-family houses, about 9 in 10 | electricity, about 5 in 10 | Mostly heat pumps; furnaces are the smaller share. |
| Herndon | 1981 | single-family houses, about 4 in 10 | electricity, about 6 in 10 | Mostly heat pumps; furnaces are the smaller share. |
| Dranesville | 1984 | single-family houses, nearly all | electricity, about 6 in 10 | Mostly heat pumps; furnaces are the smaller share. |
| McNair | 2003 | condo and apartment buildings, about 6 in 10 | gas, about 7 in 10 | Condo buildings: compact gas furnaces in closets. |
| Floris | 1990 | single-family houses, about 8 in 10 | gas, about 6 in 10 | 1980s and 90s houses, most on their second gas furnace. |
| Hutchison | 1979 | townhouses, about 5 in 10 | electricity, about 7 in 10 | Mostly heat pumps; furnaces are the smaller share. |
| Sully Square | 2015 | condo and apartment buildings, about 6 in 10 | gas, about 6 in 10 | Condo buildings: compact gas furnaces in closets. |
By the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
Inside the town limits. Floris, Franklin Farm, McNair and Dranesville, on the Fairfax County side, are counted by the Census as places of their own.
When it’s worth doing
Burners that catch and go out, a few tries and then nothing, usually mean the furnace can’t prove its flame, so it shuts the gas off for safety. Running the sequence of operation is where that shows up. If it won’t light at all, that’s a repair, and our Herndon furnace repair page prices the common ones.
That’s the night every furnace in town gets asked to work at once. A tune-up in the fall finds a weak part while you still get to choose when it’s fixed.
The home inspector ran the heat for a minute. A tune-up runs it through a full cycle with the panel off, and tells you what the last owners left you.
Safety and paperwork
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.
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.
Our Virginia Class A contractor license, 2705192276, is on the side of the van.
Choosing who tunes it up
Questions to ask anybody who quotes you, us included.
Ask before anyone comes out. Gas pressure and temperature rise are readings on a meter, so a real tune-up has numbers in it, not just a look at the filter.
Some tune-ups end in a list. Ask which items are failing now, which can wait a season, and what each one costs, before you agree to any of it.
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.
Showed up on time, worked quietly, recommended other maintenance procedures for my HVAC system. Good overall experience.
Where we work
Next door to Herndon: Reston, Sterling, Great Falls, Oakton and Chantilly.
Questions
Clear the closet and a path to it. The county’s three-foot rule for anything that burns counts in a closet as much as in a basement. If the door is louvered, leave it: a closet furnace often draws the air it burns through that door.
Yes. About one owner in a hundred inside the town burns propane from a tank, a few more in McNair. They get the same visit and price, with the gas pressure read against propane’s settings, which run higher than natural gas.
$99 for one furnace, and the same for a heat pump, a boiler or a ductless mini split. If it turns up a repair, you get the price in writing before any work, and you decide.
No. The furnace tune-up is its own visit at $99. The Heating Check and the Clean Heat deep clean, the one that takes the blower wheel out and cleans it, are separate offers with their own terms on our Clean Heat page.
Ready when you are
Call, or send the form at the top. One furnace is $99, and anything it needs 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 Herndon 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.