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Simple Signs Your Furnace Needs Repair
Posted On: March 10, 2025
A well-functioning furnace is essential for keeping your home warm and comfortable, especially during colder months.
However, furnaces can develop issues over time, leading to inefficiencies or even breakdowns.
Recognizing the signs that your furnace needs repair can help you avoid costly replacements and ensure your home stays warm.
Here are some common indicators that your furnace may need professional attention.
1) Unusual Noises
If your furnace starts making strange noises, such as banging, rattling, whistling, or screeching, it could be a sign of mechanical issues, loose components, or airflow problems.
Any unusual sounds should be inspected before they turn into serious repairs.
2 Weak or Uneven Heating
If some rooms in your home are colder than others or your furnace isn’t producing enough heat, it may be struggling due to clogged filters, ductwork issues, or a failing blower motor.
Inconsistent heating is a clear sign that your system needs maintenance.
3) Increased Energy Bills
A sudden spike in your energy bill without an obvious reason could indicate your furnace is working harder than usual.
This inefficiency may be due to a dirty filter, aging components, or failing parts that need repair or replacement.
4) Frequent Cycling
If your furnace is turning on and off frequently, it could be a sign of a malfunctioning thermostat, clogged filter, or improper airflow.
Short cycling puts stress on the system and reduces its lifespan, making prompt repair essential.
5) Strange Odors
A burning or musty smell when your furnace runs could mean dust buildup, electrical issues, or even mold in the system.
A persistent rotten egg odor could indicate a gas leak, which is an emergency requiring immediate attention.
6) Pilot Light Issues
For gas furnaces, a healthy pilot light should burn blue.
If it’s yellow, orange, or flickering, this may signal carbon monoxide issues or incomplete combustion.
Any changes in your furnace’s flame color should be inspected right away.
7) Poor Air Quality
If you notice an increase in dust, dry air, or allergy symptoms in your home, your furnace’s filter or ventilation system may be struggling.
Regular filter changes and maintenance can improve air quality and furnace efficiency.
Don’t Ignore Furnace Warning Signs
If you notice any of these signs, it’s best to schedule a professional inspection before small problems turn into costly repairs.
Regular maintenance and timely repairs will keep your furnace running efficiently and ensure your home stays comfortable all season long.
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See What Our Customers Are Saying:
Apr 28, 2022
We wanted to get our AC replaced as it was 22-years old and added to this our furnace was costing more and more to repair. So, we decided to get both the furnace and AC replaced.
After going through a few quotes and product reviews we decided to go with Twintech. The three-men crew arrived early in the morning, wasted no time and got to work right away. By 2:00 pm, they were all done. Ive found their work to be top notch and they were completely professional. I had all my questions answered to my satisfaction both during the progress of their work and at end.
I have pleasure in recommending Twintech to anyone who is looking to get their furnace or Ac replaced
Nathan S.
Apr 28, 2022
Our air conditioner died On a Saturday and within hours Dave came out to take a look and discuss replacement/repair options.
The new air conditioner was installed on the Wednesday. The new unit was installed quickly. The installers were friendly and cleaned up afterwards.
We noticed a slight leak around the furnace that night and they came out the next day and fixed the issue. It has been working great and is quieter than our previous unit.
Very satisfied and would highly recommend TwinTech.
Apr 28, 2022
I contacted TwinTech to replace my 20-year old A/C. Dave, their service rep, promptly replied and was at my home within 2 hours. He was friendly and knowledgeable and didn't try to upgrade or oversell their A/C units but suggested the best fit for my small 1000 feet bungalow. Although this was during a heatwave and very busy, they were able to fit me in 2 days later. The TwinTech crew installed a 1.5 ton Ducane A/C unit that is now running smoothly while maintaining a constant cooling temperature. The crew were very courteous, professional and efficient and I will definitely recommend TwinTech to family and friends. I much appreciated your great service.
Nancy M., Oshawa
Apr 28, 2022
We had a great experience. The guys who installed our a/c did a nice job. Cleaned up.
Apr 28, 2022
excellent crew, fast and efficient! Would call them again when I need a new furnace.
Apr 28, 2022
Professional, courteous and efficient, dont need to say more than that! Use them you will not regret it.
Apr 28, 2022
TwinTech was a pleasure to deal with from the estimate through installation. We replaced a 28 year old a/c unit with one recommended by TwinTech's sales representative Dave who took the time to go over the product with us and answer any questions. The warranty is for 10 years parts and labour and they will complete the registration for you. Installation was by Greg (owner) and Mitch and Spencer who were quick and efficient and left everything clean and tidy.
Apr 28, 2022
Very professional, from the sales consultation and inspection to the final installation. Met every expectations we had for the job. A local business with great client support. We highly recommend. Twintech is a blue chip! Thanks!
Apr 28, 2022
I left a live chat message on their website that my air conditioning was not working. Within 1hr a representative called me to discuss my options.
The next day he came to the house to review my needs and give me a price for a new system. Price quoted was less than I expected and the installation was completed the following day. I found their salesman and the installers very knowledgeable and easy to deal with. All my questions were answered. Everything was properly explained in regards to what unit was needed and why, along with instruction where needed for use.
The installers made sure everything was working properly before they left.
Apr 28, 2022
This is to thank Twintech Heating and Cooling for their exceptional and timely service. Mitch, their technician was very courteous and generous with his time right from his first meeting with us. He not only took the time to check everything but also educated us on why we needed what he recommended. Greg and Mitch graciously accommodated us on our requested day and time for job to be done. They were both very courteous and responsive to our needs and special requests especially in a tight spot. The job was finished neatly and on time. Thank you Twintech for your great service !
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