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Serious Furnace Issues Only Professionals Can Solve
Posted On: January 26, 2025
A furnace is essential for keeping your home warm and comfortable, especially during cold months. While regular maintenance can prevent many problems, certain furnace issues are too complex or dangerous for DIY repairs. Here are some serious furnace problems that require the expertise of a professional technician:
1. Furnace Not Producing Heat
If your furnace isn’t producing heat despite being turned on, it could be due to issues such as:
- A failed ignitor or pilot light. Modern furnaces use electronic ignitors or pilot lights to start the heating process. If these components fail, your furnace won’t produce heat.
- Thermostat malfunctions. Incorrect calibration or a faulty thermostat can prevent your furnace from activating properly.
These problems require technical know-how and specialized tools to diagnose and repair.
2. Frequent Cycling (Turning On and Off)
Short cycling can lead to inefficient heating and increased wear on your furnace. Causes may include:
- Clogged air filters. Restricted airflow forces the furnace to overwork, causing frequent shut-offs.
- Improper thermostat placement. A thermostat located near heat sources may cause your furnace to turn off prematurely.
- Overheating. Internal components may overheat due to mechanical failures or blockages.
A professional can identify and fix the root cause to prevent long-term damage.
3. Unusual Noises
Banging, screeching, rattling, or whistling noises are often signs of serious internal issues such as:
- Loose or damaged belts.
- Malfunctioning blower motors.
- Cracked heat exchangers.
Ignoring these sounds can result in costly repairs or even safety risks, such as carbon monoxide leaks.
4. Uneven Heating
If certain rooms in your home are significantly colder or warmer than others, it may indicate:
- Ductwork issues. Leaks, blockages, or poor design in your duct system can reduce airflow.
- Aging or undersized furnaces. Your furnace may not have the capacity to heat your home efficiently.
A technician can assess your heating system and suggest solutions such as zoning systems or upgrades.
5. Gas Leaks or Carbon Monoxide Concerns
A gas leak or carbon monoxide issue is a critical safety hazard. Warning signs include:
- A strong smell of gas.
- Physical symptoms such as nausea, dizziness, or headaches, which could indicate carbon monoxide exposure.
- A yellow or flickering burner flame instead of a steady blue one.
These situations require immediate professional attention to ensure your home and family are safe.
6. Persistent Pilot Light Problems
If your pilot light frequently goes out or burns with an unusual color (like yellow instead of blue), it may point to:
- A dirty or clogged burner. Debris buildup can disrupt gas flow and ignition.
- Thermocouple issues. A faulty thermocouple can prevent the pilot light from staying lit.
These components are delicate and should only be handled by a trained technician.
7. Electrical Problems
Blown fuses, tripped breakers, or problems with the furnace's control board can cause operational failures. These issues are complex and involve working with live electricity, which poses a risk if not handled properly.
Why Professional Repairs Matter
Attempting DIY repairs for serious furnace issues can:
- Void your warranty.
- Lead to incorrect or incomplete fixes.
- Risk your safety due to exposure to gas leaks or electricity.
Certified technicians have the training, tools, and experience to diagnose and repair furnace issues safely and efficiently.
Final Thoughts
When your furnace encounters serious problems, don’t risk your safety or the comfort of your home by trying to fix it yourself. Contact a trusted HVAC professional to ensure your furnace is repaired correctly and operates efficiently for years to come.
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See What Our Customers Are Saying:
Feb 1, 2021
Dave was very pleasant to deal with and Twintech responded quickly when our furnace needed to be replaced ASAP. Installation was done on time and the crew were neat and tidy. We now have a great furnace that suits the needs of our family.
Feb 1, 2021
When your furnace kicks in over the holidays and you're not sure where to turn.. I'm so thankful that this company returned my phone call. I appreciated their transparency and clarity which allowed me to make an informed decision. With various quotes thrown at you, it can be difficult to make the right decision and trust the solutions offered by different companies. TwinTech spoke the truth and delivered on their word. Neat, timely and clean service; the peace of mind I needed during a very cold holiday season. I highly recommend them!
Feb 1, 2021
Pulling a old unit out and installing a modern heating system! Required drilling holes in the wall for the newer pipes. We went from 70% (I am willing to bet it was far less due to lack of maintenance and just old) to 96% newer . It now feels warmer and more pressure and we use to run extra heaters and feel as though they are not necessary!
Feb 1, 2021
I received three quotes before deciding to choose Twintech. Dave's prices was much more reasonable than the competitors. I most appreciated their honest recommendations. Others tried to oversell their products and services. Thank you Dave!
Feb 1, 2021
They had the best price and did a great job on the installation. Recommend them to anyone.
Feb 1, 2021
It was a amazing and professional high quality job
Friendly and very helpful representatives
Thank you for understanding my concern
And explain very well
Overall we pleased with your service
Tanks
May 15, 2020
My 19 year old furnace stopped working when the cold weather hit in November, and I was left without heat. I interviewed several companies and found TWINTECH HEATING and COOLING to be very knowledgeable, quick to respond to my inquiries and very competitively priced.
Dave provided all of the information and pricing ahead of time and set up the appointment for the installation. Greg and Mitch arrived on time to do the installation and worked quickly and efficiently to complete the job.
After the completion of the installation, Dave followed up to ensure that everything was working well and that I didn't have any concerns.
Overall, this was a low-stress and flawless experience from start to finish. I would highly recommend TWINTECH HEATING and COOLING to anyone that requires a new furnace.
May 14, 2020
Our 20 year old furnace broke down during the first cold weekend this past November and our usual HVAC company never returned our phone call. Their loss, missing out on a sale since we didn't want to spend much fixing an old furnace and our 40 year old air conditioner was also long overdue for replacement. We proceeded in obtaining three different quotes for furnace and air conditioner replacement, and proceeded with the one we received from Twintech.
Dave was friendly, knowledgable and accommodating to our schedule and provided with us with a price that fell in the middle of the three quotes that we had. We felt that the Amana furnace and air conditioner he quoted us on were the best products and value offered to us and felt most comfortable with the professionalism and reputation of Twintech.
Greg, Grant and Mitch were at our house for installation the day after we decided to proceed. The guys were friendly and informative, the job was completed efficiently and workmanship appears excellent. Our house is certainly much more comfortable with the new two-stage variable speed Amana furnace compared to the old clunker! And, we're looking forward to enjoying the new air conditioner once summer rolls around again. Thanks Twintech!
May 13, 2020
We are very happy with our new furnace. The service was excellent the guys worked 6 hours straight through and there was no mess at all they took the old furnace boxs etc with them they then explained everything to us they were very helpful and pleasant , when we need a new air conditioner we know who to call!
May 12, 2020
The crew from sales to installation was very professional and had great attention to detail
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