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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 10, 2019
Had new furnace installed and ran into some difficulties but the contractor responded in a timely and efficient manner - after further service calls were made, a reasonable resolution was found.
Apr 8, 2019
The work was done quickly efficiently neatly and professionally. Pleased with the service, information, product, and the company.
Apr 1, 2019
Great sales member named Dave came in told us some amazing items and how they would be priced installed an all. We couldnt believe it! The next day the ac was installed, that day one employee named Greg told us that our furnace was working way to hard and was causing us to use way too much gas. So two days later they came in an installed a new furnace!
Apr 1, 2019
Installation was done quickly and professionally. The new furnace is quiet and provides even heat.
Mar 3, 2019
They removed and discarded old furnace. Installed new furnace. Installed air intake pipe, that had never been installed by builder, no charge. Replaced loose hose on floor with hard pipe and rerouted it to drain, no charge. Almost 33% cheaper then quote from Enercare, which was the company we dealt with and had insurance with for 8 years. No yearly fee for cleaning/insurance, saves 300 a year. Courteous, professional, fast, and friendly. My wife and I have been recommending them to everyone we know and meet, and will continue to do so. Thanks for everything, Twintech!!!
Mar 4, 2019
This company was great to deal with. Our furnace went down and they installed a new furnace the next day with a lot of professionalism!
Feb 22, 2019
Finally! An honest company with highly knowledgeable and informative staff. Had a furnace service and found multiply errors in our system from an amateur installer. Very fair price to correct problems and will definitely use again.
Feb 16, 2019
Had to replace the heating & a/c unit in a condo apartment dwelling. this company recommended by the property manager and president of the condo building. found their workmanship and attention to details very good and very thorough. were able to resolve small problems and situations and happy to feel the heat in my unit. it's pricey, but happy was done by a very professional service. thank you.
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.
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