Your furnace can make various smells from time to time. Here are a list of smells your furnace might make and possible causes. When you first turn your furnace on, you will have a dusty smell coming from it. That is normal and all it is, is the dust that has fallen burning up. That smell will go away soon. If you have a musty smell coming off your furnace that might mean that you have mold on your filter. You fix this by changing the filter which should be changed every month anyway. If you are smelling an oily smell you might have a clogged filter. If you change your filter and the oily smell isn’t gone, you might have a oil leak that needs to be looked at by a technician like the ones at Bartlett Heating and Air. A smoky smell is a major issue. Your chimney can be blocked which will cause smoke to go through your duct work. Electrical smells are also a major issue. It can be caused by melting plastic, motor burning, and frayed wires. This needs to be looked at by a technician right away because it is a safety hazard. One last smell that your furnace can have is a sulfur smell. This is a very bad smell because it is caused by a gas leak in the main line which can lead to furnace explosion if it is not taken care of right away. As you can see, the furnace can make many different smells, some good, some bad but now you have more knowledge about which smells are harmful and which aren’t. Bartlett Heating and Air can fix all your HVAC needs, call us today!