How to Know When Your Furnace Needs Repairs


As the cooler months approach, ensuring your furnace is in optimal working condition is crucial for a warm and comfortable home. However, even the most reliable heating systems can encounter issues over time. Recognizing the signs that your furnace needs repairs can save you from chilly nights and costly breakdowns. Here are key indicators to look out for, along with some tips for maintaining your system.

Strange Noises

One of the first signs that your furnace may need repairs is the presence of unusual noises. While some sounds are normal, others can indicate underlying issues.

  • Banging or clanging could suggest loose components.
  • Squeaking or squealing might point to a worn-out belt or motor.
  • Hissing could indicate a gas leak or airflow issues.

If you hear any persistent or concerning noises, it’s essential to call a professional like Thompson Heating and Air Conditioning to diagnose the problem promptly.

Inconsistent Heating

If certain rooms in your home are significantly warmer or colder than others, your furnace may not be distributing heat evenly. This inconsistency can result from clogged ducts, faulty thermostats, or problems within the furnace itself.

Check your air filters first; a dirty filter can restrict airflow and hinder efficiency. If changing the filter doesn’t resolve the issue, it may be time to contact a technician to evaluate your system further.

Increased Energy Bills

A sudden spike in your energy bills can be a significant indicator that your furnace is working harder than it should. This inefficiency may stem from age, mechanical issues, or poor maintenance. Regular maintenance helps keep your furnace running efficiently, but if you notice an unexplained increase, it’s wise to have a professional assess your system.

Frequent Cycling

If your furnace frequently turns on and off, a phenomenon known as short-cycling, it may be a sign of problems. This can lead to increased wear and tear on the system, reduced efficiency, and higher energy bills. Short-cycling can occur due to a malfunctioning thermostat, clogged air filters, or other mechanical issues. If you notice this behavior, it’s time to reach out to Thompson Heating and Air Conditioning for an inspection.

Yellow or Flickering Pilot Light

For furnaces that utilize gas, the color of the pilot light is critical. A healthy pilot light should be blue. If it appears yellow or flickering, this could indicate a problem with the burner, such as a buildup of dirt or a gas flow issue. A yellow flame can also signal the presence of carbon monoxide, which is dangerous. If you notice any issues with the pilot light, contact a professional immediately to ensure your safety.

Unpleasant Odors

While it’s common for furnaces to emit a slight smell when first turned on after a long period of inactivity, persistent strange odors can indicate a problem. A musty smell might suggest mold or mildew in the system, while a burning smell could mean electrical issues or that dust is burning off the heat exchanger. If you experience any unusual smells, it’s crucial to turn off your furnace and call Thompson Heating and Air Conditioning for assistance.

Age of the Furnace

Furnaces have a lifespan of about 15-20 years. If your system is approaching or exceeding this age, it’s wise to be proactive about maintenance and repairs. Older furnaces are more prone to issues, and investing in a new, energy-efficient model may save you money in the long run.

By staying vigilant and recognizing the signs that your furnace needs repairs, you can help maintain a comfortable and safe home during the colder months. Regular maintenance and prompt attention to any issues can extend the life of your furnace and improve its efficiency. If you notice any of the indicators mentioned above, don’t hesitate to contact Thompson Heating and Air Conditioning. Our experienced team is here to ensure your furnace is ready to keep you warm all winter long.