Open 24/7 for emergencies
An AC tune-up in Sterling is $99 per system. Out by Dulles a heat pump often heats into April, so book it late April or May.
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5.0 stars across 1,132 reviews
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 Sterling
NOAA’s 1991 to 2020 normals for Dulles Airport, beside Sterling, still count close to four nights at or below freezing in April, where Reagan National averages about one every other year. Across a whole year Dulles logs nearly four times as many heating degree days as cooling ones. Electric heat, here usually a heat pump, warms close to eight in ten Countryside owner homes and just over half of those around Sterling Park, so those outdoor units reach their spring visit having just finished the heavier half of their year.
Around Sterling Park and in Sugarland Run about four in ten homes predate 1980, and the typical owner’s house in the part the Census calls Sterling went up in 1979. A house that age has seen several outdoor units come and go. Indoors the air handler or furnace usually sits on the lowest level, and where that level got finished, the coil’s water often leaves by a little condensate pump that lifts it to a drain. Nobody remembers that pump until the carpet beside it is wet.
In Cascades and Lowes Island the fuel flips: about eight in ten Cascades owners and seven in ten in Lowes Island heat with gas, so the air conditioner out back got the winter off, its cooling coil sitting in the ductwork right above the furnace. Their typical house dates from 1996, so most are on a second air conditioner by now. Some bigger Lowes Island houses add a second system for the bedrooms, which is a second $99 visit.
Oak Grove is mostly townhouses with a 2005 median, so a builder’s condenser still running there has about twenty summers behind it, and the written findings say whether it’s worth another. Arcola’s median home is from 2017, so there the visit is mostly cleaning and a baseline. Around Dulles Town Center more than half the homes are in condo and apartment buildings and seven in ten are rented, so the unit’s owner, not always whoever lives there, usually books.
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 |
|---|---|---|---|---|
| Sterling | 1979 | single-family houses, about 5 in 10 | electricity, about 5 in 10 | Mostly electric heat: heat pumps, so the spring visit covers a system that runs all year. |
| Lowes Island | 1996 | single-family houses, about 6 in 10 | gas, about 7 in 10 | Townhouse streets: condensers in a row out back, air handlers in a closet or the attic. |
| Cascades | 1996 | townhouses, about 4 in 10 | gas, about 8 in 10 | 1980s and 90s houses, most on their second or third air conditioner. |
| Sugarland Run | 1983 | single-family houses, about 6 in 10 | gas, about 5 in 10 | 1980s and 90s houses, most on their second or third air conditioner. |
| Dulles Town Center | 1998 | condo and apartment buildings, about 5 in 10 | gas, about 9 in 10 | Condo and apartment buildings: closet air handlers and fan coils, the drain line over a neighbor’s ceiling. |
| Arcola | 2017 | townhouses, about 5 in 10 | gas, about 8 in 10 | Townhouse streets: condensers in a row out back, air handlers in a closet or the attic. |
| Oak Grove | 2005 | townhouses, about 8 in 10 | gas, about 9 in 10 | Townhouse streets: condensers in a row out back, air handlers in a closet or the attic. |
By the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
When to book it
Buy a Sterling house between November and March, and the home inspector likely skipped the cooling, since running an air conditioner in cold weather can harm the compressor. The spring tune-up is often the first time anyone has watched yours cool.
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.
Townhouse condensers sit side by side behind the units, where leaves and grass clippings pack the coil a little more every season.
Choosing who tunes it up
Questions to ask anybody who books you, us included.
In a Sterling house with the air handler in a finished basement, the coil’s water may run to a floor drain or to a small pump that lifts it overhead. Ask whether the visit covers that pump too. A stuck one floods quietly.
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.
Great experience today with SwiftPro Cooling tech. After previous AC repair visit, recommended condenser coil cleaning for max ac efficiency. Finally scheduled. Same tech, same excellent experience. 100% recommend this independently owned shop.
Where we work
Next door to Sterling: Ashburn, Herndon, Reston, Great Falls and Chantilly.
Questions
Late April into May. A heat pump is often still heating early in April, and Dulles averages one or two 90-degree afternoons in May, then close to six in June and about twelve in July. That gap is when the outdoor unit can be cleaned and the cooling tested with neither season in the way.
$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 Sterling 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.