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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:
Feb 13, 2019
Fantastic team. Completed the job as per the specifications and in under 3 hours. Highly recommended Twintech.
Jan 30, 2019
During the summer, I previously hired TwinTech to replace my air conditioner when it failed. They did an excellent job so when I decided to proactively replace the furnace I contacted them. The furnace I had was 22 years old and showed signs of internal leakage. It still worked but rather than wait to have it fail in cold weather, I decided to purchase a higher efficiency model before it failed and take advantage of energy efficiency rebates. TwinTech offered very useful advice on the make and model of furnace to choose including high efficiency and variable speed motor. The price was reasonable, TwinTech arrived at the allotted time, installed the new furnace (including some re-routing of exhaust lines since the existing ones were too close to other vents), removed the old furnace, tested the installation and cleaned everything up. Overall, it was a good experience, they did a great job and the new furnace is working well.
Jan 26, 2019
Greg came over at 9:30pm to rescue my daughter and I from a horrible experience with Enercare that evening. He was professional. Kind. And got us what we needed quickly and at an afford price. I would 100% recommend calling on Greg and his team for any of your heating and cooling needs in the future!!
Jan 24, 2019
Installed a great hot water heater when our old one failed. When my furnace died during cold weather they showed up quickly and my house was warm before my wife got home. :)
Jan 14, 2019
I dont usually right reviews but when you receive service like this I felt it was a must. Honest and fair. I Have 4 children and on Xmas eve my furnace stopped working and a gentleman came out and got me up and running so at least we would have heat for the holidays. As promised he would replace my furnace early in the new year. The job was completed on time, great price for quality furnace and extremely clean and professional job. Would have never known anyone was in the house. Not a spec of dust or mess from lugging out an old rusty furnace. If you have any ac or heating concerns twintech is your only option. I was royally impressed with and Im sure you will be too.
Jan 14, 2019
Class Act ! These guys were professional right from the quote stage through to installation. They know their stuff and took their time to help educate me. They take pride in their work and it shows. I would recommend TwinTech Heating and Cooling to anyone. Keep up the great work !!!
Dec 28, 2018
This Company is terrific. No high pressure sales and they deliver exactly what they promise to deliver. The new furnace is great and we now get consistent temperatures throughout the house. The installers were great and very efficient and completed the work on schedule on the promised day. Everyone representing this company was very aware of their presence in our house and worked diligently to keep our home as uninterrupted and as clean as was humanly possible. We did not need to go around the house to clean up after they left, what a nice surprise. We have had follow up by the company to ensure everything is to our satisfaction. How unusual in today's environment. The impression left by Twintech is that they care about us and our home. This is so refreshing in today's high tech world. Out thanks go out to Dave in sales and G, G, and P (the installers).
Dec 21, 2018
They were Timely and professional. They were very Knowledgeable with answering all of my questions.
Dec 23, 2018
The entire process was prompt and professional, from the initial quote to the installation of the new furnace. The team installed the new furnace and removed the old one in approx. 4 hrs. The guys were very knowledgeable and gave me lots of information. I have used Twintech before for a new A/C installation and new I was in good hands.
Dec 9, 2018
The overall experience dealing with this company was great from start to finish when getting a new furnace and ac this year. Everything was clearly explained to us during our consultation with Dave and there were no surprises with added costs. The work was done as expected and their response time to inquiries were very timely generally within a few hours or less. They are all very professional and was a pleasure to do business with them. Highly recommend to anyone looking for honest quality professional service.
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