There's nothing worse than turning on your heater on a cold Georgia night only to feel cold air blowing from your vents. If your heater is blowing cold air, don't panic — there are several possible causes, and many have simple solutions.
Check Your Thermostat First
Before assuming the worst, check your thermostat settings. Make sure it's set to "heat" mode and the fan is set to "auto" (not "on"). When the fan is set to "on," it runs continuously — even when the system isn't actively heating — which can feel like cold air.
Dirty Air Filter
A severely clogged air filter can cause your furnace to overheat and shut down its burners as a safety precaution. The blower fan may continue running, pushing unheated air through your home.
Solution: Replace your air filter immediately and see if the problem resolves.
Pilot Light Issues (Gas Furnaces)
If you have a gas furnace, a pilot light that has gone out will prevent the burners from igniting. On newer furnaces with electronic ignition, a faulty ignitor can cause the same problem.
Solution: If you're comfortable doing so, try relighting the pilot light following your furnace manufacturer's instructions. If it won't stay lit, call All Seasons for professional service.
Flame Sensor Problems
A dirty flame sensor can cause your furnace to light briefly and then shut off. The sensor detects whether the burners are lit — if it's dirty, it can't detect the flame and shuts the system down as a safety measure.
Solution: A technician can clean or replace the flame sensor quickly and affordably.
Ductwork Issues
Leaky or disconnected ductwork can allow cold attic or crawl space air to mix with your heated air, making it feel lukewarm or cold by the time it reaches your rooms.
When to Call for Help
If basic troubleshooting doesn't resolve the issue, contact All Seasons Heating & Cooling. Our certified technicians can diagnose and repair any heating problem quickly.
Call (770) 809-1355 for fast heating repair in Carrollton, GA and surrounding areas.