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Should My Furnace Be Blowing Cold Air?
Posted On: November 26, 2024
If your furnace is blowing cold air, it could indicate a problem that needs attention. Here are some common reasons and steps to troubleshoot:
1. Thermostat Settings
- Check the mode: Ensure the thermostat is set to "Heat" and not "Fan."
- Temperature setting: Confirm the temperature is set higher than the current room temperature.
2. Pilot Light or Ignition Issues
- In older furnaces, the pilot light may be out. Relight it following the manufacturer's instructions.
- For newer furnaces, a faulty electronic ignition system might be preventing the burners from lighting.
3. Clogged Air Filters
- Dirty filters can restrict airflow and cause the furnace to overheat, leading the safety mechanism to shut off the burners.
- Replace your filter if it’s clogged or dusty.
4. Overheating Furnace
- A furnace that overheats will trigger safety mechanisms, shutting down the heating elements while the blower continues to circulate air.
- Common causes include poor airflow or a malfunctioning blower motor.
5. Ductwork Problems
- Leaky or disconnected ducts can pull cold air into the system or fail to deliver warm air efficiently. Inspect your ducts for issues.
6. Empty Fuel Supply (Gas or Oil Furnaces)
- If your furnace relies on fuel, check the tank to ensure it's not empty.
7. Malfunctioning Components
- Issues with the blower motor, control board, or limit switch can cause cold air to blow.
- A professional HVAC technician can diagnose and repair these problems.
When to Call a Professional
If troubleshooting doesn’t resolve the issue, contact a licensed HVAC technician. They can identify and fix the underlying problem, ensuring your furnace operates efficiently.
Would you like help drafting a detailed guide or contacting a technician for assistance?
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See What Our Customers Are Saying:
Aug 16, 2022
Very pleased with the installation of our new furnace and A/C unit. From quotation stage to the completion of the job Twintech was very professional.
Thank you for a job well done.
Aug 15, 2022
My old water heater quit on me. I called TwinTech. In less than 4 days, I had my new water heater installed and the old one taken away. The whole process was quick, easy, pleasant, and well done. This is the third time I've dealt with TwinTech and I've been satisfied each time.
Aug 14, 2022
I had them replace my furnace last year. When it came time for the air conditioner this year, I did not hesitate to call Twintech again. I will also have them perform regular maintenance on them.
Aug 13, 2022
We required a new HVAC replacement after running the old
system for 18 years.
Dave understood our requirements and gave us a quote that
covered all the necessary items.
Installation was fast and very tidy. Everything works as
it should. Our thanks to Greg, Mitch and others for their
excellent work. Recommend this family owned business to
anyone else, considering HVAC or other work.
Aug 12, 2022
I needed a new furnace and A/C to replace my 21 yr. old units, and went to the internet to view potential companies in May, I received 3 quotes,
and chose Twintech based on their salesman Dave who was very detailed and covered off everything on what Twintech was all about,
an extremely dedicated company with so many years of experience, and after reading the on line reviews I was sold on Twintech, who did not disappoint as the installation team were top notch with Greg leading,
I would highly recommend this company without any doubts, in my books they are first class all the way. Our new Amana furnace and A/C are working perfectly !
Aug 11, 2022
Flawless transaction. They did exactly what they promised, showed-up on time, cleaned-up, and were highly professional. Highly recommended.
Aug 10, 2022
Salesperson and 2 man installation team were all professional and
knew their stuff. All three were friendly and helpful, answering all
my questions. The quality of their work demonstrated their experience
and expertise in their field.
Aug 9, 2022
A dear late cousin of mine recommended this company and I have been happy with the service.
Aug 8, 2022
We are very pleased with the work done by Twintech. They were very professional from start to finish. Dave came to our home and gave us a very competitive quote for new high efficiency furnace and air conditioner. The installers were very courteous and professional. We would highly recommend them.
Aug 7, 2022
Great experience getting an old furnace replaced.
Sales Guy (Dave) was great - honest, responsive, and friendly.
The work itself was done quickly and we are very happy with the outcome, thank you! We recommend TwinTech!
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