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Is your furnace emitting strange smells whenever it’s cycling? Are you concerned about what those smells may be indicating? When you notice unusual odors coming from your furnace, they can sometimes be an indication that your furnace has some sort of issue that needs to be inspected, and possibly a sign that furnace repairs or a furnace replacement may be needed as well. Here are some of the most common furnace smells and what they mean: Common Furnace Smells & What They Mean
If you notice a moldy or mildew-y odor coming from your vents when your furnace is cycling, then that’s an indication that there may be mold growing in your home’s air ducts. Despite what some homeowners may think, mold can certainly grow in your ductwork and it’s not a problem that should be taken lightly. Mold can have a negative impact on your health and result in allergy triggers, respiratory issues, and cold and flu symptoms, among other types of side effects. Therefore, if you notice these types of odors coming from your HVAC system, you should have your air ducts professionally cleaned and your mold infestation remediated in order to ensure that the air that is cycling around your home is clean, safe, and healthy to breathe.
Another smell that you may notice when your furnace is running is a chemical smell. If you notice a chemical-like smell, then you should turn your furnace off immediately and call your local HVAC company for emergency furnace repair services. A chemical smell is generally the sign of a cracked heat exchanger and it’s an extremely dangerous type of damage that could be extremely hazardous for your health. Do not ignore any distinct chemical-like odors that are coming from your furnace and take immediate action if you detect them.
If your furnace runs on oil, then it can sometimes emit smelly odors. You may notice oil smells if any oil was spilled when your furnace was refueled, or if your furnace has an oil leak. Take note of any oil smells and have a professional HVAC contractor take a look at your furnace and do any necessary repairs or maintenance work that may be needed if you’re concerned.