24/7 Emergency Service Serving Northern Virginia
info@goswiftpro.com
  1. Lorton
  2. Furnace tune-up
Lorton, Virginia

Furnace tune-ups in Lorton.

A furnace tune-up in Lorton is $69 a system, regularly $99, for a natural gas furnace in Laurel Hill or a propane one on Mason Neck.

  • Priced per system, in writing
  • Gas and propane furnaces
  • Dedicated HVAC team
5.0 stars across 884 Google reviews
Two SwiftPro heating technicians standing in a Northern Virginia basement beside an open gas furnace, with the indoor coil above it and a water heater to the right
Two of our heating technicians in a Northern Virginia basement, beside an open gas furnace.

Book your furnace tune-up

Leave your number and we’ll call you to set a time.
This field is for validation purposes and should be left unchanged.
What’s different in Lorton

What a Lorton furnace burns depends on which end of 22079 it’s in.

Across Lorton’s ZIP about six owners in ten heat with natural gas, one in three with electricity and three in a hundred with propane, and the two ends are far apart. Close to 85 percent of Laurel Hill burns gas. On Mason Neck it’s about one owner in ten on gas, one in ten on propane, and close to two in three on electricity, usually a heat pump. So the first thing to know about a Lorton furnace is what feeds it.

Laurel Hill’s median house went up in 2002, and plenty there still run the builder’s furnace. At twenty-some years one can light every time and still be drifting, which is what a tune-up’s numbers are for: the gas pressure at the valve, the temperature rise across the heat exchanger, each step of the start-up in its order. Written down this fall, they give next year’s readings something to be measured against.

A propane furnace burns like a natural gas one, but at a higher pressure at the burner, with its own orifices and valve setting, and one converted from natural gas, or set up for the wrong fuel, shows it on the gauge. The tune-up measures that pressure against propane’s numbers and looks hard at the flame. Check the tank’s gauge before the cold comes, too: a furnace that runs the tank dry stays off until it’s filled.

In the Lorton Census place a quarter of the homes are in condo and apartment buildings and about two owners in three heat with gas, often with a compact furnace in a utility closet. One that draws its combustion air from inside the house needs that air to reach it, which is why so many of those doors are louvered. A solid door hung during a remodel, or louvers blocked by a laundry rack, starves the burner. You can check that yourself tonight.

A wall thermostat in heat mode reading 66 degrees with the setpoint at 69, the furnace falling behind on a cold Northern Virginia night
Neighborhood by neighborhood

What the furnaces look like across Lorton.

Census figures for the owner-occupied homes in each place, and what that usually means for a tune-up.

PlaceMedian home builtMost homes areHeated withWhat the tune-up usually meets
Lorton2001single-family houses, about 4 in 10gas, about 7 in 10The builder’s gas furnaces, many close to 20 years old.
Newington1981townhouses, about 6 in 10electricity, about 6 in 10Mostly heat pumps; furnaces are the smaller share.
Laurel Hill2002single-family houses, about 4 in 10gas, about 8 in 10The builder’s gas furnaces, many close to 20 years old.
Mason Neck1973single-family houses, nearly allelectricity, about 6 in 10Mostly heat pumps; furnaces are the smaller share.
By the numbers

Lorton houses, by the numbers

From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.

Lorton

ZIP 22079 as a whole: every Lorton address. Most of Newington, in the table, has Springfield mail.

  • Median home built1997 Census
  • Built before 1980about 2 in 10 Census
  • Built since 2000about 4 in 10 Census
  • Most homes aresingle-family houses, about 4 in 10 Census
  • Heated withgas, about 6 in 10 Census
  • Rentedabout 2 in 10 Census
  • In a townhouse the furnace is usually in a closet or the attic. Tell us which when you book, and the tech brings the right ladder.
What it costs

What a furnace tune-up costs in Lorton.

$69 for one furnace, regularly $99, 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$69
  • Furnace tune-up, regularly$99
  • Heat pump, boiler or ductless mini split tune-up, one system$69
  • 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 $69 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.

When it’s worth doing

When a furnace tune-up earns its keep in Lorton.

A yellow, lazy flame

Natural gas and propane burners should both burn mostly blue and steady. Yellow, floppy flames, or soot around the burner openings, say the gas pressure or the air supply is off. Book the tune-up now rather than run the furnace that way all winter.

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.

The furnace lives in the attic

Up there it’s the one nobody looks at until the bedrooms go cold. A tune-up gets somebody up the ladder before that.

Safety and paperwork

What the county says about furnace care in Lorton.

Fairfax County

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.

Choosing who tunes it up

How to pick who tunes up your furnace in Lorton.

Questions to ask anybody who quotes you, us included.

  1. Will they look at the vent outside, not just the furnace inside?

    The exhaust leaves up a metal flue to the roof or out plastic pipe through the side wall. On a twenty-year-old house, shrubs have often grown up around those side-wall pipes, and leaves or a snow drift can block them. A tune-up that never leaves the utility room has checked half the trip.

  2. 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.

  3. 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.

From our Google reviews

What our customers say.

★★★★★
Quick response, Elvis was knocking my door in a couple of hours after my call to the office. He did full inspection for both HVAC units, and answered all my questions. Both systems are working well. I always have very pleasant experience with SwiftPro
AlexeyGoogle review, October 2025

5.0 stars across 884 Google reviews. Read them on our reviews page.

Questions

Furnace tune-up questions from Lorton.

Our Laurel Hill house has a furnace in the basement and another in the attic. Is that two tune-ups?

Yes, each furnace is its own system at $69. A two-story house from the 2000s often has a second system for the bedroom floor up in the attic, and since nobody goes up there, it’s the one most likely to be running on an old filter. If the attic unit turns out to be a heat pump’s air handler rather than a furnace, it’s still one system at $69.

How much is a furnace tune-up in Lorton?

$69 for one furnace, regularly $99, 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 $69. 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.

Get the furnace looked at before you need it.

Call, or book online and pick a window. One furnace is $69, and anything it needs gets a written price before any work.

SwiftPro Heating, Cooling & Plumbing is a licensed, BBB Accredited (A rating), independently owned heating, cooling and plumbing company in Chantilly, serving Lorton and the rest of Northern Virginia. Virginia contractor license #2705192276. 5.0 stars across 884 Google reviews. SwiftPro maintains a dedicated HVAC team and a dedicated plumbing team.

SwiftPro Heating, Cooling & Plumbing, 4230 Lafayette Center Dr, Suite N, Chantilly, VA 20151, (703) 997-9757. Book online, read our reviews, or see every town we serve.

Call Now Book Online