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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 23, 2022
It was a refreshing experience interacting with the Twintech team. From Bob, the sales consultant, who articulated in layman's terms all the options available and reasons for making any selection. This was done without the prevailing pressure tactics so commonplace today.
Before proceeding Mitch, the technician, at our request conducted a service check on our 30 yr old furnace. His report was positive indicating no urgency to replace it. Again no pressure tactics.
Three days after first meeting with Bob, the installation team of Greg and
Spencer completed the installation within the planned time frame.
A very professional, courteous and transparent team which delivered on their promise. I highly recommend Twintech.
Aug 22, 2022
Initial contact with sales resulted in an immediate response, which led to a timely installation. Both sales and installers were all very professional. I have no hesitation in recommending TWINTECH.
Aug 21, 2022
I had a great experience with TwinTech. The company offered a reasonable quote, and performed a quick and clean installation. The installer Greg was experienced, professional and courteous. He explained the services he performed and gave recommendations on maintain the new furnace.
The salesman Bob was honest
and professional and educated me on how to achieve optimal performance.
All communication from them was quick and they came the following day. I was pleased with the service and would recommend them.
Aug 20, 2022
From quote, to installation, to follow up, Twintech provided excellent service. I would highly recommended their services.
Aug 19, 2022
I had a really great experience with these guys. The salesman Bob was clearly very knowledgeable about everything to do with heating and cooling a home, spent a lot of time with us going over the details of the job, never rushed us and came back after the install to make sure we were happy. The installation crew was excellent, they covered the floors all the way from outside down to the basement furnace room, kept the place clean, got the work done on time and were very friendly. Ive got 15 years in the contracting/ construction industry and these guys are one of the most professional companys Ive dealt with. Great company!
Aug 18, 2022
Had great service and clean-up was good. Was happy with my salesman. They were very friendly and helpful. I needed a new furnace as our was over 20 years old. The furnace and air-conditioner work great and they are very quiet. I am very pleased with the service and product I received.
Aug 17, 2022
Met with Dave for the sales process and he was great about explaining and going over everything to us. The install happened very quickly and the team were super professional and friendly. We are very happy with this company and their services and we definitely recommend them to others. Thankful my sister recommended them to me!
Aug 16, 2022
Reviews for Twintech were good, and they did not disappoint. After an initial visit to discuss the suitable AC unit for replacement, an installation date was available in just a couple of days, and everything was installed without a hitch. Highly recommended
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.
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