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An AC tune-up in Herndon is $99 per system. Inside the town the outdoor unit is usually a heat pump, just off a winter of heating.
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One of our HVAC technicians with an air conditioner on a Northern Virginia street, a SwiftPro box truck and pickup parked behind him.
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
One price per system, $99. We go through it before a Northern Virginia July finds the weak part for you. Anything it turns up is priced in writing before any work, and if it can wait, we say so.
AC tune-up, one system
$99
Furnace tune-up, one system
$99
Heat pump, boiler or ductless mini split tune-up, one system
$99
Comfort+ membership, a cooling maintenance visit every spring included
$199 a year
A house with two systems books two tune-ups, one for each, and a heat pump or a ductless mini split is the same $99 a system. The heating side, a furnace or a boiler, gets its own tune-up in the fall at the same price.
With Comfort+ membership at $199 a year, the cooling maintenance visit comes every spring, along with a heating maintenance visit, a water heater flush with a sewer camera inspection and a dryer vent cleaning.
What’s different in Herndon
About six in ten owners inside the Town of Herndon heat with electricity, which in the town’s 1970s and 80s houses usually means a heat pump. So a spring tune-up here doesn’t wake a machine from months off. The outdoor unit spent the winter pulling heat out of cold air, icing over on damp mornings and melting itself clear, with leaves and grit blowing into its fins. The visit cleans the coil and the fan, clears the drain line and writes up what it found.
About a quarter of the town’s homes are townhouses. Out back, the outdoor unit often shares a small patio with the grill, sometimes a few feet from the dryer’s exhaust hood, which can blow lint into the fins with every load. Another quarter live in condo and apartment buildings, where the air handler usually stands in a hall closet over carpet or a neighbor’s ceiling.
On the county side one street can hold both kinds. Franklin Farm, mostly 1980s single-family houses, splits close to half and half between heat pumps and gas furnaces, Dranesville leans electric, and Floris leans gas, about six in ten owners. Behind a gas house the air conditioner has sat idle since October, so the tune-up is its first run of the year, and its indoor coil usually rides on top of the furnace.
McNair, along Sunrise Valley Drive, is the newer end of Herndon: most of it went up after 2000, six in ten homes are in condo and apartment buildings, and about three in four are rented. A builder’s condenser from the mid-2000s there is near twenty summers old, and the write-up says plainly what shape it’s in. Already blowing warm? That’s a repair, and our Herndon AC repair page prices the common ones.
Neighborhood by neighborhood
Census figures for the owner-occupied homes in each place, and what that usually means for the system we’d be tuning up.
| Place | Median home built | Most homes are | Heated with | What usually cools it |
|---|---|---|---|---|
| Franklin Farm | 1985 | single-family houses, about 9 in 10 | electricity, about 5 in 10 | Mostly electric heat: heat pumps, so the spring visit covers a system that runs all year. |
| Herndon | 1981 | single-family houses, about 4 in 10 | electricity, about 6 in 10 | Mostly electric heat: heat pumps, so the spring visit covers a system that runs all year. |
| Dranesville | 1984 | single-family houses, nearly all | electricity, about 6 in 10 | Mostly electric heat: heat pumps, so the spring visit covers a system that runs all year. |
| McNair | 2003 | condo and apartment buildings, about 6 in 10 | gas, about 7 in 10 | Condo and apartment buildings: closet air handlers and fan coils, the drain line over a neighbor’s ceiling. |
| Floris | 1990 | single-family houses, about 8 in 10 | gas, about 6 in 10 | 1980s and 90s houses, most on their second or third air conditioner. |
| Hutchison | 1979 | townhouses, about 5 in 10 | electricity, about 7 in 10 | Mostly electric heat: heat pumps, so the spring visit covers a system that runs all year. |
| Sully Square | 2015 | condo and apartment buildings, about 6 in 10 | gas, about 6 in 10 | Condo and apartment buildings: closet air handlers and fan coils, the drain line over a neighbor’s ceiling. |
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 to book it
When a heat pump heats, its indoor coil makes no water, so the drain line sits dry all winter and the slime in it can harden into a plug. The first humid week of cooling, the water has nowhere to go. Switch the cooling off, mop up and book the tune-up: clearing that line is part of it.
It cools all summer and heats all winter, so it piles up more hours in a year than an air conditioner that sits idle from October to May.
A weak capacitor is a small fix on a mild day in April. Found by a July heat wave, it’s a house with no cooling.
Choosing who tunes it up
Questions to ask anybody who books you, us included.
From the yard a heat pump and a plain air conditioner look alike, but one ran all winter and the other sat. Ask whether they know which you have before they plan the visit.
Ask what gets cleaned and what gets checked, and whether a second system costs extra. A number with no list behind it is hard to hold anybody to.
Ask for the findings in writing, with a price on anything that needs fixing and an honest word on what can wait. A tune-up you never see written down is one you take on faith.
An air conditioner doesn’t use up refrigerant. Low means it’s leaking somewhere, and a company that tops it up every spring is selling you the same refrigerant twice.
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.
Mr. Moises Rojas was great! A very experienced HVAC technician who carefully examined our very old AC system, and helped guide us through options for our original AC system. Highly recommended!
Where we work
Next door to Herndon: Reston, Sterling, Great Falls, Oakton and Chantilly.
Questions
Pull the grill and the patio chairs back from the outdoor unit, clear a path to the air handler’s closet, and jot down the filter’s size if you know it.
The lease usually says, and the condo documents say which equipment is your unit’s, usually the air handler and its drain line. If it’s yours, book it in spring before the tenant needs cooling and keep the written findings on file.
$99 per system, the same for a central air conditioner, a heat pump or a ductless mini split. A house with two systems books two. If the tune-up turns up a repair, you get its price in writing before any work, and you decide.
Once a year, in the spring, before the first heat wave. The heating side gets its own visit in the fall. The filter needs attention more often, every one to three months, and it’s the cheapest thing on the list.
Ready when you are
Call, or send the form at the top. Anything the tune-up turns up gets priced in writing before anybody touches it, and if it can wait, you’ll hear that too.
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.