Few things are more frustrating than a heater that’s clearly running but blowing cool or lukewarm air while the house stays cold. On a Spokane winter night, that’s a problem you want solved fast. Here are the usual causes, from simple fixes to jobs for a pro.
Start With the Thermostat
Make sure it’s set to “heat” and the fan is set to “auto,” not “on.” With the fan on “on,” it blows constantly, even between heating cycles, which feels like cool air. Also check the batteries and confirm the temperature setting is above the current room reading.
Check Your Air Filter
A clogged filter is one of the most common reasons for weak or cool airflow. It restricts air and can cause the furnace to overheat and shut off its burners for safety while the fan keeps running. Swap in a fresh filter and see if it helps.
Look at the Vents
Closed or blocked supply vents and return grilles choke airflow and leave rooms cold. Make sure furniture and rugs aren’t covering them.
Possible Ignition or Pilot Issues
If the burners aren’t lighting, the furnace can push unheated air. Modern furnaces use electronic ignition or a flame sensor that can get dirty over time. This is where professional service usually comes in.
Ductwork Losing Heat
Leaky or disconnected ducts, especially in a crawlspace or attic, can bleed warm air before it reaches your rooms.
When to Call Bearcat
Thermostat, filter, and vent checks are yours to try. If the burners won’t light, the furnace short cycles, or airflow stays cold after those steps, it’s time for a technician. See our heating repair services or call (509) 891-5110.
