When it comes to maintaining a comfortable home during the cold months, your furnace’s performance is essential. However, even the most dependable system can develop issues that affect efficiency or lead to a breakdown. Understanding these common furnace problems and their solutions can help you keep your home warm and your system running smoothly.
1. Dirty Filters
A dirty or clogged air filter is one of the most common causes of furnace inefficiency. When airflow is restricted, the furnace must work harder to push heated air through your home. This can cause overheating, poor air quality, and even premature system failure.
To prevent this, check your filter monthly and replace it at least every one to three months. Homes with pets or high dust levels may require more frequent replacements.
2. Pilot Light and Ignition Issues
Older furnaces use a standing pilot light, while newer systems rely on electronic ignition. If your furnace fails to start, a faulty pilot or ignition component could be the cause.
For pilot lights, make sure the flame is burning blue. A yellow or flickering flame indicates insufficient oxygen, which may require adjustment by a professional. For electronic ignition issues, a system reset may help, but often these problems require diagnosis and repair by an HVAC technician.
3. Malfunctioning Thermostat
If your furnace isn’t heating properly, cycles too frequently, or doesn’t turn on, the thermostat may be the culprit. Start by checking that it’s set to “heat” mode and that the batteries are working. If the issue persists, it may need recalibration, rewiring, or replacement. Faulty communication between the thermostat and the furnace can also cause irregular heating behavior.
4. Furnace Isn’t Heating Enough
If your furnace runs but isn’t producing sufficient heat, first inspect the air filters and vents. Dirty filters or blocked vents can significantly restrict airflow. If those are clear, the problem may stem from a malfunctioning gas valve, low fuel supply, or a furnace that’s undersized for your home’s heating demands. In these cases, professional assessment is recommended.
5. Frequent Cycling
When a furnace turns on and off too often, it may be due to a clogged filter, poor airflow, or a faulty thermostat. Begin by replacing the filter and verifying that vents are open and unblocked. If the cycling continues, the issue may involve improper furnace sizing or internal component malfunction, both of which require expert attention.
6. Furnace Noise
Strange sounds from your furnace should never be ignored. Squealing noises may indicate a worn or loose belt, banging sounds can point to delayed ignition, and rattling may suggest loose panels or components. Turn off your furnace and contact a professional technician to diagnose and resolve the issue before it worsens.
Contact Perfect Degree HVAC for Expert Furnace Repair
While some furnace problems can be handled with simple maintenance, many require the skill of a certified HVAC technician. In Drexel Hill, PA, homeowners can rely on Perfect Degree HVAC for dependable furnace repair, maintenance, and installation services. Whether you need an emergency fix or routine inspection, our team is committed to keeping your home warm, safe, and energy-efficient.
Call us today at (610) 579-1984 or complete our online form to schedule your furnace service. We’re here to ensure your comfort all season long.
