Signs Your Furnace Needs Repair or Replacement
As temperatures drop, your furnace becomes essential for keeping your home comfortable and safe. However, like any appliance, furnaces wear out over time. Knowing the warning signs of furnace trouble can help you address issues early—saving money and avoiding unexpected breakdowns. Gary’s Heating Service, Inc. provides furnace repair in Lansing, DeWitt, MI, Eaton County, Ingham County, Portland, MI and surrounding areas.
- One of the most common signs your furnace needs repair or replacement is uneven heating. If some rooms are warm while others stay chilly, your system may be struggling to distribute air evenly due to a failing blower motor or clogged ductwork. Another red flag is rising energy bills. A sudden spike in heating costs often indicates your furnace is working harder than it should, possibly because of worn components or decreased efficiency.
- Strange noises—such as banging, rattling, or squealing—are also indicators that something is wrong. These sounds could point to loose parts, ignition problems, or a cracked heat exchanger. Similarly, frequent cycling (when the furnace turns on and off too often) may signal a malfunctioning thermostat or an improperly sized unit.
- Pay attention to the age of your furnace as well. Most systems last around 15–20 years with regular maintenance. If yours is nearing or past this range, replacement might be more cost-effective than continual repairs. Another serious warning sign is yellow or flickering pilot light, which may suggest a carbon monoxide leak—an urgent safety concern that requires immediate professional attention.
- Lastly, if your home’s air feels dry, dusty, or stuffy, your furnace might not be filtering or humidifying properly.
If you notice any of these symptoms, schedule a professional inspection right away. A qualified HVAC technician can determine whether a repair or full replacement is the best solution—ensuring your home stays warm, safe, and energy-efficient all winter long. Please reach out with any questions you might have, and we will be happy to help.


