Winter in Utah can be brutal, and the last thing you need is your furnace blowing cold air instead of keeping your home warm and cozy. If you are in this situation, don’t worry. We will help you understand the common reasons for this issue and how to fix them.
1. Thermostat Settings
Sometimes, the problem isn’t your furnace at all—it’s your thermostat. Here are some quick fixes:
- Check the Fan Setting: If the fan is set to “ON,” it will blow air continuously, even when the furnace isn’t heating. Switch it to “AUTO” to ensure the fan only runs when the furnace produces heat.
- Confirm the Temperature: Make sure the thermostat is set to a temperature higher than your current indoor temperature.
2. Dirty Air Filters
A clogged air filter restricts airflow, causing your furnace to overheat and shut down as a safety precaution. When this happens, the fan may still run, but only cold air will circulate.
Solution: Replace your air filter every 1-3 months during the heating season to ensure proper airflow and avoid unnecessary shutdowns.
3. Pilot Light or Ignition Issues
For older furnaces around 15-30 years with a pilot light, the flame might go out due to drafts or a dirty thermocouple. Modern furnaces with electronic ignitions can experience malfunctions as well.
Solution: If you’re comfortable doing so, relight the pilot light following your furnace’s manual instructions. For ignition issues, it’s best to call a professional. Call us today at 801-652-4755.
4. Leaky Ductwork
If your ductwork has leaks, the warm air your furnace produces may be escaping before it reaches your vents. This can make it feel like your furnace is blowing cold air.
Solution: Have your ductwork inspected and sealed by a professional to improve efficiency and heat distribution.
5. Low Fuel Supply or Gas Valve Issues
For gas furnaces, a low fuel supply or a broken gas valve can stop the burners from lighting. This can lead to cold air.
Solution: Check if your gas supply is sufficient. If not, contact your gas provider. For gas valve problems, a technician’s expertise is required. Call us today at 801-652-4755.
6. Faulty Limit Switch
The limit switch regulates the furnace’s heating cycles. If it malfunctions, it may cause the blower to run continuously, even when the furnace isn’t heating.
Solution: A faulty limit switch needs to be replaced by a professional technician. Call us today at 801-652-4755.
Don’t Wait Until It’s Too Late!
If your furnace is blowing cold air, you need to fix it quickly. This will help prevent more damage or a total breakdown.
At All Utah Plumbing, Heating & Air, we’re here to help! Take advantage of our $49 Furnace Tune-Up Special to ensure your furnace is running efficiently and reliably all winter long. Our comprehensive tune-up includes:
- Inspecting and cleaning essential components.
- Checking for potential issues before they turn into costly repairs.
- Ensuring your furnace is ready to handle Utah’s coldest months.
Schedule Your Furnace Tune-Up Today!
Don’t let a cold house ruin your winter. Call us at 801-652-4755 or visit our website to book your $49 Furnace Tune-Up.
