Water dripping from a pipe over an upstairs window
Many attic air handlers have a second drain from a backup pan, run out over a window so somebody notices. If it drips, the main drain is blocked. Book the tune-up before the backup pan fills too.
Warrenton, 20186 and 20187
AC tune-up in Warrenton.
An AC tune-up in Warrenton is $99 per system. Plenty of New Baltimore houses run two systems, and each gets its own.
Get your price in writing
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- Priced before we come out
- Findings in writing
- Dedicated HVAC team
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
What an AC tune-up costs in Warrenton.
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 Warrenton
Old attics off Main Street, builder systems out along Lee Highway.
Close to three in ten homes inside the Town of Warrenton were standing before 1960, before central air was standard in a new house. Where one has it now, it came later, and with no ductwork to hang it on, the indoor half often went into the attic, with short runs down through the ceilings. In the Historic District the Town’s design guidelines steer outdoor units away from the street side of historic buildings, so the condenser usually sits beside the house or out back. Boxed in, it pulls its own hot exhaust back through the coil, so the visit starts by clearing room around it.
An attic air handler has the roughest summer in the system. It works in the hottest room of the house, and every drop its coil wrings out of the air crosses the attic floor to a drain. Through the months the cooling is off, the slime in that line can dry hard where it sits. So the spring visit clears the drain on every system, attic ones included, and April or May is the time, before the attic turns into an oven.
About a fifth of the town’s homes are townhouses and roughly a quarter sit in small apartment and condo buildings, where the outdoor units often stand together on one pad and all look alike. Before the tech arrives, know which one is yours; a strip of tape with your unit number saves the guessing. A tune-up on the neighbor’s condenser does you no good.
New Baltimore, along Lee Highway on the county side of 20187, is newer: nearly every home is a single-family house, about half went up in 2000 or later, and many still run the builder’s air conditioner. A unit made before 2010 may use R-22, a refrigerant the EPA stopped allowing to be produced or imported in 2020. The findings name yours, and if the visit turns up signs of a leak, you hear about it in April, not in a heat wave.
Neighborhood by neighborhood
The air conditioning across Warrenton, place by place.
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 |
|---|---|---|---|---|
| New Baltimore | 1999 | single-family houses, nearly all | gas, about 5 in 10 | 1980s and 90s houses, most on their second or third air conditioner. |
| Warrenton | 1993 | single-family houses, about 5 in 10 | gas, about 6 in 10 | 1980s and 90s houses, most on their second or third air conditioner. |
By the numbers
Warrenton houses, by the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
The Town of Warrenton
Inside the town limits, a little over 4 of the roughly 110 square miles the two Warrenton ZIP codes cover: the Historic District around Main Street, Leeds Square, and the streets off Broadview Avenue and Alwington Boulevard.
- Median home built1993 Census
- Built before 1980about 4 in 10 Census
- Built since 2000about 3 in 10 Census
- Most homes aresingle-family houses, about 5 in 10 Census
- Heated withgas, about 6 in 10 Census
- Rentedabout 4 in 10 Census
- Gas heat means a furnace inside and a separate air conditioner outside, both moving air through the same blower.
The Fauquier County side
New Baltimore only. It’s the one Census place on the county side with mostly Warrenton mail, so the farms and lots beyond it aren’t in these figures.
- Median home built1999 Census
- Built before 1980about 3 in 10 Census
- Built since 2000about 5 in 10 Census
- Most homes aresingle-family houses, nearly all Census
- Heated withgas, about 5 in 10 Census
- Rentedabout 1 in 10 Census
- Plenty of original systems here are 15 to 25 years old, and a yearly look shows how much life is left.
When to book it
When an AC tune-up is worth booking in Warrenton.
It’s still the original system
A house from the 2000s often runs its first air conditioner, now 15 to 25 years old. A yearly look tells you how much life it has left before a hot week does.
Before the first hot week
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
How to pick the best AC tune-up company in Warrenton.
Questions to ask anybody who books you, us included.
Will each system get its own written findings?
With one system downstairs and another for the bedrooms, ask for the findings unit by unit. Upstairs coil dirty, downstairs drain slow: that you can act on.
What does the price cover, and is it per system?
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.
Do they write down what they found?
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.
Do they find the leak before they sell refrigerant?
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
What our customers say.
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!
Questions
AC tune-up questions from Warrenton.
Do you tune up the AC on the older houses in the Historic District?
Yes, at $99 per system. A tune-up changes nothing on the outside of the house, so there’s nothing for the Town’s historic review to see. If the condenser is in a tight side yard, tell us the way in when you book.
I rent in Warrenton. Should I book the AC tune-up myself?
Ask the landlord first. Nearly four households in ten inside the town limits rent, and the equipment is usually the owner’s call. If they’d like you to book it, it’s $99 per system.
How much is an AC tune-up in Warrenton?
$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.
How often should an AC get a tune-up?
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
Book the AC before the first hot week.
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 Warrenton 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.