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Your home’s furnace is a critical component of your HVAC system, and it is important to know the signs that may indicate you need professional repair. Here are some key indicators that you may need to call an HVAC technician for furnace repair.

Unusual Noises 

While no furnace is completely silent, sudden, unusual, or loud noises could indicate a problem. If you hear banging, squealing, or rattling sounds, it could be due to a mechanical issue or airflow reduction.

Rising Energy Bills 

If your energy bills are suddenly skyrocketing without any changes in your usage habits, it could be a sign that your furnace is not running efficiently. This could be due to various issues, such as a faulty thermostat or a leak in your ductwork.

Frequent Cycling 

Frequent cycling between the “On” and “Off” modes can indicate a malfunctioning thermostat, improper air circulation, or even a problem with your furnace’s control board. If you notice that your furnace is cycling more frequently than usual, it is worth calling an HVAC technician.

Yellow Pilot Light 

The pilot light should always burn blue, which indicates complete combustion. If it is yellow or another color, it could suggest problems like a ventilation issue or the presence of carbon monoxide. This is a serious issue that needs immediate attention from a professional.

Poor Air Quality 

A well-functioning furnace should help maintain good indoor air quality. However, if you start noticing an increase in dust, dirt, soot, or rust particles around your house, it could indicate a problem with your furnace filters or ductwork.

Cold Air 

Your furnace’s main job is to produce and distribute heat. If it is blowing cold air, there could be a problem with the pilot light or heat exchanger.

Age of Furnace 

If your furnace is more than 15 years old, it may start showing signs of wear and tear. Regular maintenance can extend its life, but eventually, parts will start to fail.

Frequent Repairs 

If your furnace requires frequent repairs, it might be more cost-effective to replace it. Regular breakdowns are a clear sign that your furnace is nearing the end of its life.

Health Issues 

Headaches, burning sensations in the eyes or nose, nausea, and disorientation can all be signs of carbon monoxide leakage from your furnace. This is a serious health hazard and should be addressed immediately.

Furnace Doesn’t Turn On 

If your furnace doesn’t turn on at all, it is obvious that you need to call an HVAC technician. This could be due to a variety of issues, including a malfunctioning thermostat, a blown fuse, or a problem with the pilot light.

In conclusion, being aware of these signs can help you detect and address furnace issues before they develop into major problems. Regular maintenance can prevent many issues, but if you notice any of these signs, it is best to act quickly and call an HVAC technician for professional assistance. They can inspect the unit and repair any issues before they become expensive problems.