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Failing Furnace: Warning Signs You Need to Watch Out For


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A failing furnace can have significant disadvantages for you and your family. The temperature in your home will be significantly lower than expected. This can be terrible, especially during the cold seasons. You could also experience a fire if the furnace fails and sparks fly.

If the furnace fails, it could cause significant damage to your home. That’s why it’s essential to be aware of the signs that your furnace might fail.

Here are warning signs that your furnace might be failing that you need to watch out for:

1. Making a Lot of Noise

If your furnace makes a lot of noise, your furnace might likely be failing. This can be dangerous because the noise could indicate an issue with the fire and lead to a fire. 

The first thing you want to do is make sure that the flame is properly burning. If the flame looks sharp, there is no issue with the furnace. But if the flame is small, there may be an issue with the furnace. Another thing you want to look at is the fan. If it needs to be fixed, this could prevent the flame from being small. In addition, if the fan is spinning too quickly, it could also increase the noise level.

Finally, you want to ensure that there aren’t any obstructions in the vents. This can cause the furnace to overheat, resulting in increased noise and even a fire.

2. Not Heating the House as Much as It Used To

If your furnace is not heating the house as much as it used to, it might be a sign that it is failing. A failing furnace can cause uncomfortable temperatures in the home and increased energy bills. You can check the furnace’s air quality and dust levels to determine if it needs maintenance, but consider replacing your furnace if it’s not working well.

3. You Have to Turn the Thermostat All the Way up for Your Furnace to Work

If you have to turn the thermostat up for your furnace to work., it is a sign that your furnace might fail. Your furnace works best when it’s between 68 and 74 degrees Fahrenheit. If the temperature has to be raised to get your furnace to work, it may be time to have it serviced. A failed furnace can cause patchy heating, poor air quality, and heat loss. Have a professional inspection if you need help determining whether your furnace is failing.

4. Emitting an Unpleasant Smell

If you notice an unpleasant smell coming from your furnace, it is likely a sign that your furnace might be failing. Some parts often cause this smell in the furnace to go wrong, which can cause materials such as oils and coolants to leak and create an overwhelming smell.

If you notice this smell, scheduling an appointment with a professional to have the furnace inspected and diagnosed is essential. Depending on the severity of the issue, corrective action may be required to ensure the furnace is still functional and minimize the potential for further health hazards.


If your furnace is not working properly, it’s time to take action. A failing furnace can cause an entire home to be in danger of freezing, so it’s essential to fix it as soon as possible or replace it. Take note of the warning signs above and contact the professionals for the best action.

Climate Experts is the best place to be if you are looking for a company that offers furnace repairs for your home. We are available 24 hours a day, seven days a week. Climate Experts is bonded, licensed, and insured and offers exceptional customer service throughout the year. Request a free estimate today!

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