5 Signs Your Furnace Needs Service Before Edmonton's Winter

18 Mar, 2025 · JUJCO Heating & Cooling

Furnaces tell on themselves in October. Waiting until the first −25°C night is how a small worn part becomes an after-hours call.

1. It short-cycles

If the furnace starts, runs a couple of minutes, and shuts off over and over, it is not 'saving gas.' It is usually a limit, a flame-sense issue, or a unit that was oversized years ago. Either way small worn parts can sometimes lead to a no-heat call if they are ignored.

2. Rooms do not catch up

A cold upstairs in January is sometimes ducts, sometimes a dying blower, sometimes a furnace that can no longer make temperature rise. A fall visit can tell you which before you buy space heaters.

3. New noises

Inducers that scream, blowers that rumble, and delayed ignition that goes whump are not character. They are parts on the way out.

4. The flame looks wrong

A lazy yellow flame, or a burner that will not stay lit, is a combustion problem. That is a safety visit, not a wait-and-see.

5. It is 15–20 years old and you are already repairing it

Age alone is not a death sentence. Age plus a cracked exchanger or a weekly lockout is. Get a written repair-versus-replace before the polar snap.