Furnace Blog
Why Your Furnace Blows Cold Air
Cold air from a gas furnace usually means it is not firing, or it is tripping on a safety switch. Check the filter, thermostat, and breaker first, then look for an ignition or airflow fault. An electric furnace blowing lukewarm air often has a failed element or sequencer. If the air is cold and the furnace is running, do not ignore it: a furnace that fires and trips repeatedly is protecting itself, and the cause needs finding.
SCHEDULE SERVICE · (615) 436-9171
Serving Goodlettsville, TN 37072 · Mon-Fri 7AM - 7PM · Sat 8AM - 4PM · 24/7 Emergency
Cold air from a gas furnace usually means it is not firing, or it is tripping on a safety switch. Check the filter, thermostat, and breaker first, then look for an ignition or airflow fault. An electric furnace blowing lukewarm air often has a failed element or sequencer. If the air is cold and the furnace is running, do not ignore it: a furnace that fires and trips repeatedly is protecting itself, and the cause needs finding.
Not sure what your furnace is doing? Note the symptom, any error code, and when it started, then call (615) 436-9171 and we will narrow it down.
Related Reading
- Common furnace problems in Goodlettsville
- Emergency furnace repair in Goodlettsville
- Furnace maintenance and tune-up
Further Reading
Learn more from Furnace (heating) on Wikipedia and Goodlettsville on Wikipedia.
Need Furnace Help in Goodlettsville?
One call gets a real tech on the way. Mon-Fri: 7AM - 7PM, Sat: 8AM - 4PM, 24/7 Emergency.
Frequently Asked Questions
What should I check first for this furnace problem?
Start with thermostat batteries and setpoint, the furnace switch, the breaker, and the filter. Note any error code and when the problem started, then call us with those details.
Can I fix this furnace problem myself?
A filter change and thermostat batteries are safe homeowner jobs. Gas, ignition, heat exchanger, venting, and electrical work should be left to a technician, and safety switches should never be bypassed.
When should I call for emergency furnace help?
No heat in cold weather, a gas smell, a burning smell, or a carbon monoxide alarm all count as emergencies. If you smell gas, leave and call from outside.
How do I prevent this problem next winter?
Book a fall tune-up, change the filter on schedule, clear vents and the outdoor vent termination, and test carbon monoxide alarms before the first hard freeze.