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Is My Furnace Producing No Heat?
Posted On: December 6, 2024
If your furnace is not producing heat, it could be due to several potential issues. Here's a guide to troubleshoot the problem:
1. Check the Thermostat
- Ensure the thermostat is set to "Heat" and the temperature is higher than the current room temperature.
- Check if the thermostat has power (replace batteries if needed).
2. Inspect the Power Supply
- Make sure the furnace is receiving power. Check the circuit breaker or fuse box for tripped breakers or blown fuses.
- Some furnaces have a power switch; confirm it is turned on.
3. Pilot Light or Ignition System
- For older furnaces with a pilot light, ensure the pilot is lit. If it’s out, follow the manufacturer’s instructions to relight it.
- For modern furnaces, check the electronic ignition system for errors.
4. Dirty Air Filter
- A clogged air filter can restrict airflow, causing the furnace to overheat and shut down. Replace the filter if it's dirty.
5. Gas Supply Issues
- If your furnace is gas-powered, make sure the gas valve is open. Check with your gas provider to confirm there are no service interruptions.
6. Blower Motor or Belt Problems
- If you hear the furnace running but no air is blowing, the blower motor or its belt could be faulty.
7. Clogged Condensate Line
- High-efficiency furnaces may shut down if the condensate drain line is clogged.
8. Faulty Limit Switch
- The limit switch may prevent the furnace from producing heat if it detects overheating. This requires professional servicing.
9. Dirty or Malfunctioning Burners
- Inspect burners for dirt or corrosion that could prevent proper ignition.
10. Call a Professional
- If none of the above resolves the issue, it’s best to contact a licensed HVAC technician to diagnose and fix the problem safely.
Keeping up with regular maintenance can help prevent heating issues and ensure your furnace operates efficiently.
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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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