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Maintaining your home’s furnace is essential to keeping your home comfortable and energy efficient. A well-maintained furnace can save you money on energy bills, reduce the risk of carbon monoxide poisoning, and ensure your home is heated evenly and safely.

Regular maintenance and inspections can help you ensure that your furnace is operating correctly and efficiently and can save you money on costly repairs or replacements down the line. Investing in regular furnace maintenance can ensure that your home’s furnace is running optimally and that your family is safe and comfortable.

1. Unusual Noises

If you start hearing strange noises from your furnace, it is crucial to take action before the problem worsens. The most common noises from a furnace can be grinding, rattling, or squealing. Various issues, such as a failing motor, a worn-out blower fan, or a clogged filter, can cause these noises. 

If you hear any of these noises coming from your furnace, it is vital to diagnose the issue and take appropriate action. The first step is to check your furnace filter and replace it if necessary. A clogged filter forces your furnace to work harder and make strange noises. If the filter is not the issue, you may need to have an HVAC maintenance service in Oshawa inspect your furnace and diagnose the problem.

2. Insufficient Heat

Has your home been feeling a bit chillier than usual lately? Are you turning up the thermostat to no avail? If so, it’s likely that your furnace is not working correctly and needs to be serviced. Here’s what you should know about furnace repair and how to go about it.

Signs that your furnace is not functioning correctly include not reaching the desired temperature, strange noises, and turning on and off more frequently. If you’re experiencing any of these symptoms, it’s time to call in a professional furnace repair in Oshawa.

3. High Energy Bills

If you’ve noticed an unexplained increase in your energy bills, it’s time to take a closer look at your furnace. An inefficient furnace can cause your energy bills to skyrocket, so it’s essential to identify any potential issues and address them as soon as possible. 

Check the furnace filter and thermostat to ensure they’re working correctly. A clogged filter or malfunctioning thermostat can cause the furnace to run longer and use more energy than necessary.

4. Low Airflow

Weak airflow can be caused by various issues, ranging from a lack of heat production to an obstruction in the airflow. In any case, it’s essential to identify the problem as soon as possible to avoid more severe damage and costly repairs. If you cannot identify the cause of the weak airflow, it is best to call a professional. An HVAC technician will be able to inspect your system and identify the source of the problem. They will be able to recommend the best course of action to resolve the issue and get your furnace running smoothly again.

5. Unusual Odors

A musty smell could indicate mould or mildew in your furnace, which a moisture buildup or a leak could cause. Mould and mildew can cause serious health risks, so taking immediate action is essential if you notice this smell.

A burning smell could indicate something is overheating or not functioning correctly. This could result from a clogged filter, a worn-out part, or a faulty electrical component. A burning smell can also signify a gas leak, which can be extremely dangerous.


Detecting a failing heating system is essential to maintain comfortable temperatures and prevent costly repairs. Homeowners should know the signs of a failing heating system, such as strange noises, odd smells, and inadequate heat output. By being proactive and performing regular maintenance, homeowners can ensure their heating system runs efficiently and safely all year.

Have your furnace checked by professionals before it’s too late. Fortis Heating & Air Conditioning offers quality HVAC maintenance service in Oshawa. Contact us today to learn more.  

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