How a Furnace Works | Repair and Replace

How does a furnace heat my home? In this episode of Repair and Replace, Vance explains how a gas furnace works. This episode also covers AFUE, furnace efficiency and the different types of furnaces.

If your furnace isn’t working, then watch our troubleshooting guide:

Furnace maintenance guide:

Need a part for your furnace? Order online:

More furnace repairs:


00:00 Intro
00:39 The Basics
01:30 Efficiency
02:26 Safety Switches
03:01 Burner Airflow
03:38 Ignition
04:07 Heat Circulation
04:46 Cooldown


AMRE Supply provides homeowners, service contractors, and property management with the parts and knowledge needed to get the best performance out of any property. Stocking the largest selection of appliance parts, heating, plumbing, lighting, and janitorial supplies, AMRE ships almost anywhere in Canada within 24 – 48 hours. Expert help is available online, over the phone or in person at one of the many locations across Canada.

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