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Video · Furnaces and Heating

Dirty Furnace Filter or Tired Furnace? Why Heating Bills Climb

A dirty furnace filter chokes the air a furnace needs, so it runs longer, gets hotter and burns more gas for the same warmth. When the filter's clean and bills still climb, age is usually the next suspect.

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What you’re seeing in this video

This one skips the easy fix and goes straight to where restricted airflow and age can end up. Two techs pull an old furnace out of a basement, one in a black hoodie and cap with a headlamp, the other in a black SwiftPro polo, backwards cap and red gloves, hauling the cabinet.

Text on screen runs through the usual suspects behind a rising heating bill: poor airflow, a dirty filter, worn parts and a furnace that's simply old. The last shot is the replacement, a new Rheem furnace set on a tiled floor.

Job footageSwiftPro
Topic
Furnaces and Heating
Length
0:34
Posted
October 16, 2026
Shot by
The SwiftPro crew, Northern Virginia

Why it matters in your house

  • Pull your filter and hold it up to a light. If you can't see light through it, change it. One-inch filters usually need it every one to three months during heating season.
  • A choked filter can make the furnace overheat and trip its high limit switch, so it shuts off early and restarts. Lots of short runs cost more and wear parts faster.
  • If bills keep rising with a clean filter, have a tech check blower speed, duct leaks, the thermostat and the furnace itself. An older unit with rising bills and more repairs is telling you something.

Why is my heating bill so high all of a sudden?

Start with the cheap stuff: a dirty filter, a thermostat schedule that got changed, or closed supply registers. Then think about weather and your gas rate, since a cold snap or a rate change shows up fast. If none of that explains it, have the furnace checked for airflow problems, a failing part or a system near the end.

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

More videos from the SwiftPro crew

Old furnace with the panels off showing burners and wiring, then a new Rheem furnace (Rheem logo legible) installed in a basement with new plenum.0:07Old Furnace Replacement: The Vision Is to Fill the Room RightA furnace in a basement with the front panels off showing the burners, gas valve, control board and blower.0:35Furnace Flame Color: What a Blue vs Yellow Flame Tells a TechTwo techs work on a furnace in a basement, then close-ups of the open furnace showing the burners and flame sensor, and the flue and duct connections above.0:34Furnace Flame Sensor: The Small Rod That Can Shut Off Your HeatOpens on a meme clip of a stranger in a maroon hoodie walking down a city street ('what is bro filming'), then a new Rheem furnace (Rheem logo legible) installed in a basement with new plenum.0:15Furnace Replacement Before and After: Why the Plenum MattersTyler Griffin in a grey SwiftPro hoodie and khakis with a lineup of six crew members in front of a wrapped SwiftPro van, a big '$67' price on screen and phone 571-470-0995.0:23Furnace Inspection Before Winter: Tyler and the Crew Bring It BackAn open gas furnace in a basement mechanical room with on-screen labels for the heat exchanger and blower motor.0:21Parts of a Furnace: What's Inside and the Job Each Part Does

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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