Common Furnace Problems & How to Troubleshoot Them

Before you call for service, a few quick checks resolve a surprising share of furnace problems. Make sure the thermostat is set to HEAT and AUTO, replace a dirty filter, and confirm the furnace switch and breaker are on.

Start with the thermostat and filter

If the fan never stops, the thermostat fan may be set to ON instead of AUTO. If airflow is weak or the furnace shuts down, a clogged filter may be starving the system of air and tripping a safety limit.

When it is an ignition or sensor problem

If the burners never light, the cause may be a failed igniter, fouled flame sensor, tripped high-limit, or another component that needs a technician. Do not keep resetting a system that repeatedly locks out.

No heat in winter

If the furnace will not heat after quick checks, do not wait in Saskatoon's cold. Call the 24/7 emergency line at (306) 801-1820. If you smell gas, leave the home and call the gas utility or 911 from outside first.

How TemperaturePro Saskatoon helps

TemperaturePro Saskatoon provides 24/7 emergency dispatch, local service across Saskatoon and nearby communities, and non-commissioned technicians who diagnose the real cause instead of defaulting to an upsell. Request service or learn more about repair services.