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Video · Furnaces and Heating

How Old Is Too Old for a Furnace? Sometimes the Unit Answers

There's no single birthday, but a furnace in its late teens or older that needs a big repair is usually done. Safety comes first: a cracked heat exchanger ends the conversation at any age.

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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

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What you’re seeing in this video

The gag is a reaction clip pasted over the job: why, why, and then, oh, that's why, the moment the old unit comes into view. Two techs, one wearing a headlamp, pull that old furnace out of a closet.

Then a tech in a black T-shirt and backwards cap kneels at the new gas furnace, set up with fresh venting and a condensate setup. The last shot is the SwiftPro van heading up the street to the next call.

Job footageSwiftPro
Topic
Furnaces and Heating
Length
0:15
Posted
July 27, 2026
Shot by
The SwiftPro crew, Northern Virginia

Why it matters in your house

  • Before any big repair, ask for the furnace's age from the data plate or serial number. A tech can usually decode the year, and that number changes what's worth fixing.
  • A handy test: if one repair costs close to half the price of a new furnace and yours is past 15 years old, replacing usually wins.
  • Older furnaces often use parts that aren't made anymore. A repair that waits a week for a part in January is its own answer.

Should I replace my furnace just because of its age?

Not on age alone. A 20-year-old furnace that runs clean, passes a heat exchanger check and costs little to keep can keep going. Plan ahead, though. Get a replacement price while it still works, so the decision happens on your schedule instead of on the night it quits.

Want it done at your place? See Furnaces and Heating at SwiftPro or call (703) 997-9757.

More videos from the SwiftPro crew

TV giveaway story: a SwiftPro tech in a black polo greets an older homeowner at the door, then checks the basement furnace and humidifier with a phone.4:1380 vs 90 Furnace: A TV Drop-Off, Then a Basement WalkthroughAn old gas furnace with its panels off in a closet, then two techs carry a boxed new furnace up a snowy townhouse sidewalk and a bald tech and a bearded tech wire it in.0:49Rusty Furnace on a No-Heat Call, and the New One in the SnowA young tech in a navy work jacket wires a new electric heat strip kit into an open air handler in a utility room, using a Milwaukee tool, with the boxed heating elements on the floor.0:31Furnace Part Replacement That Isn't a Furnace: New Heat StripsIn-home assessment, part 2 of a series: an older homeowner in a blue t-shirt points out where a line runs in his unfinished basement to a SwiftPro rep in a black polo and khakis.1:49High Efficiency Furnace Venting: Mapping Where the Vent Can GoSame in-home visit as YeGFpt7bXao: the homeowner points out the line route in the basement, the SwiftPro rep photographs the ductwork and furnace plenum with a phone, then stands on the front lawn of 1:40Furnace PVC Vent Pipes: Designing a New Layout From the Old OneTwo techs carry out an old furnace cabinet in an unfinished basement.0:13An Old Furnace Out and a New Rheem Gas Furnace In

See all 234 SwiftPro videos

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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

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