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Posted On: October 9, 2024
When addressing internal furnace issues, it's important to recognize common problems and their potential causes. Here’s a breakdown of some key internal furnace issues and how they can be resolved:
1. Clogged or Dirty Filters
- Cause: Filters trap dust, dirt, and allergens, but when they become clogged, it restricts airflow.
- Effect: This can cause the furnace to overheat, reduce efficiency, and increase energy bills.
- Solution: Regularly replace or clean filters every 1-3 months.
2. Ignition or Pilot Control Issues
- Cause: Problems with the ignition system (electronic ignition or pilot light) can prevent the furnace from properly heating.
- Effect: This can result in intermittent heating or the furnace not starting at all.
- Solution: Check for loose connections, gas flow issues, or malfunctioning pilot controls. If unsure, consult a technician.
3. Blower Motor Malfunctions
- Cause: The blower motor pushes warm air through the duct system, but wear and tear or dust buildup can affect its performance.
- Effect: The furnace may run but won’t circulate warm air properly, leading to cold spots in the home.
- Solution: Have the motor cleaned and serviced regularly. In some cases, the motor may need replacing.
4. Limit Switch Failure
- Cause: A malfunctioning limit switch can prevent the blower from turning off, causing the furnace to overheat.
- Effect: This not only increases energy usage but also poses a safety risk.
- Solution: Have the limit switch tested and replaced if necessary.
5. Cracked Heat Exchanger
- Cause: Over time, the heat exchanger can crack due to stress and temperature fluctuations.
- Effect: A cracked heat exchanger can leak carbon monoxide, a dangerous and potentially lethal gas.
- Solution: If a crack is detected, the heat exchanger must be replaced immediately.
6. Thermostat Malfunctions
- Cause: A faulty thermostat may fail to communicate with the furnace, leading to improper heating cycles.
- Effect: The furnace may not turn on or off at the desired temperature.
- Solution: Check thermostat settings, replace batteries, or consider upgrading to a programmable model.
7. Dirty Burners
- Cause: Burners that are dirty or misaligned can cause inefficient combustion.
- Effect: This reduces heat output and can lead to safety hazards like gas leaks or carbon monoxide emissions.
- Solution: Have a professional clean and inspect the burners.
8. Frequent Cycling
- Cause: If the furnace frequently turns on and off, it may be due to improper airflow, thermostat issues, or an oversized unit.
- Effect: Frequent cycling reduces efficiency and puts additional wear on furnace components.
- Solution: Address airflow problems, check thermostat calibration, or consult an expert to ensure the furnace is appropriately sized.
Conclusion
Preventative maintenance and regular inspections can help avoid many of these internal furnace issues. Scheduling annual furnace tune-ups will ensure your system runs efficiently and safely, especially during peak usage seasons.
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See What Our Customers Are Saying:
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!
Aug 6, 2022
This review is late coming so my apologies to the amazing Twin Tech team! I contacted Dave at Twin Tech for a quote this past Feb (as I was collecting a few) and his recommendation was excellent. From the first meeting with Dave to the team installing the new furnace, not once did i feel uncomfortable . The team were extremely professional yet personable and clean and tidy. Decent companies still exist!
The new furnace just purrs and its just amazing the difference it has made!
(PS my sibling ended up getting a furnace from them as well)
Aug 5, 2022
The service was Twintech was excellent.
Dave our salesperson was easy to talk to and was professional. The unit recommended meets our needs and budget.
Greg and his team arrived on time for the installation and even got rid of the garbage the contractors left in our furnace.
Would definitely recommend Twintech.
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