A puddle by the furnace after the heat comes on
On a condensing furnace that usually means the shared drain is slow, or the pump it empties into has quit. Mop it up and book the tune-up before the furnace shuts itself down over it.
Warrenton, 20186 and 20187
Furnace tune-ups in Warrenton.
A furnace tune-up in Warrenton is $99 a system, gas or propane, in a pre-1960 basement in town or a New Baltimore attic.
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- Priced per system, in writing
- Gas and propane furnaces
- Dedicated HVAC team
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
What a furnace tune-up costs in Warrenton.
$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 Warrenton
In Warrenton the furnace’s blower worked all summer while its burners sat cold.
About six in ten owners inside the Town of Warrenton heat with gas, and in most of those houses the air conditioner’s coil sits on top of the furnace. So the furnace had a busy summer without lighting once: its blower moved all the cooled air and the coil dripped into a drain the furnace may share, while the burners, igniter and flame sensor gathered dust. The fall tune-up checks what ran all summer for wear and proves the rest on a full heating cycle.
About a third of the town’s homes went up between 1980 and 1999, and many have since traded the first furnace for a condensing one, the kind with white plastic pipes through the wall. It makes water as it burns, often into the same drain or pump the air conditioner uses, and a humid summer leaves slime there. If the line can’t empty, the furnace won’t run long. The tune-up follows that drain, then the pipes outside, where a wasp nest or drifted leaves can choke the air in or the exhaust out.
In the oldest houses the furnace may still vent up the original masonry chimney, and the Historic District guidelines count taking a historic chimney down as inappropriate, so those stacks stay. Columbia Gas of Virginia, the town’s gas company, asks for vents and chimneys to be checked yearly for nests, leaves and fallen bricks. The tune-up covers the furnace end, including the safety that guards against a blocked flue; the inside of the chimney is a sweep’s work.
In New Baltimore, on the county side of 20187, about half the owners heat with gas and one in seven with propane. About half its houses went up in 2000 or later, so plenty of furnaces are the builder’s, near twenty years old, and a two-story house often has a second one in the attic, each its own $99 tune-up. On propane, check the tank gauge first. If a heat pump heats the house instead, as for close to three owners in ten, it gets the same tune-up at the same $99 a system.
Neighborhood by neighborhood
What the furnaces look like across Warrenton.
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 |
|---|---|---|---|---|
| New Baltimore | 1999 | single-family houses, nearly all | gas, about 5 in 10 | 1980s and 90s houses, most on their second gas furnace. |
| Warrenton | 1993 | single-family houses, about 5 in 10 | gas, about 6 in 10 | 1980s and 90s houses, most on their second gas furnace. |
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
- A few homes here still burn heating oil. We don’t work on oil burners; a switch to a heat pump or a propane furnace is ours to price.
- Most homes here heat with gas, so gas pressure is the first reading a tune-up takes.
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
- Some homes here run on propane, and a propane furnace gets the same tune-up.
- A lot of the furnaces here are the builder’s originals, close to 20 years old.
When it’s worth doing
When a furnace tune-up earns its keep in Warrenton.
You heat with propane
Propane runs at a different gas pressure than natural gas, so the tune-up checks yours against propane’s numbers.
It’s still the builder’s furnace
A furnace that went in with the house is close to 20 years old on a lot of these streets. That’s the age when inducer motors and control boards start to go, and a yearly look finds the tired ones before a cold night does.
Safety and paperwork
What the county says about furnace care in Warrenton.
Town of Warrenton
The Warrenton Volunteer Fire Company’s home safety checklist asks for the chimney and the furnace to be cleaned and inspected every year. Source.
The fire company’s checklist also wants a carbon monoxide alarm on each level of the home, none of them more than seven years old. Source.
Fauquier County
Fauquier County Fire Rescue takes requests for help getting smoke and carbon monoxide alarms through a form on its Public Education page. Source.
Our Virginia Class A contractor license, 2705192276, is on the side of the van.
Choosing who tunes it up
How to pick who tunes up your furnace in Warrenton.
Questions to ask anybody who quotes you, us included.
Do they say what the tune-up checks?
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.
Will they tell you what can wait?
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
What our customers say.
5.0 stars across 1,132 reviews. Read them on our reviews page.
Elvis Diaz did an excellent job cleaning our condo’s HVAC system. He was very knowledgeable about maintaining the unit and the price was very reasonable.
Questions
Furnace tune-up questions from Warrenton.
I smell gas near my Warrenton furnace. Should I book a tune-up?
Not first. Go outside and call 911, then the gas company: inside the town that’s Columbia Gas of Virginia at 1-800-544-5606, the order Columbia Gas itself gives. On propane, call your supplier. The furnace comes after the gas side is safe.
My older furnace has a pilot light that’s always lit. Does it get the same tune-up?
Yes, same $99. Some older gas furnaces have a pilot that burns all the time; newer ones light only on a call for heat. Columbia Gas notes that a pilot going out can be a sign the appliance needs attention, and the safety that watches the pilot is part of what the tune-up checks.
How much is a furnace tune-up in Warrenton?
$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.
Is this the Heating Check or the Clean Heat?
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
Get the furnace looked at before you need it.
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 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.