After sensing a sudden burning smell, what is that you quickly think of? The first few thoughts push you to run towards your costly appliances, or the others like iron, hair straighteners etc. These are the most probable appliances to cause a burning smell but guess what? The burning smell coming from the HVAC vents is also a common smell but homeowners take too long to discover it. And the late discovery often leads to worsening the problem. So the next time you sense a burning smell, don't be late in checking your HVAC vents. Here we discuss some of the most common causes of HVAC vent burning smells. Burning Smell From Cooling Unit A burning smell coming from the cooling unit; Air Conditioner is always a sign that something bad is on the way. This could mean: - An overheated motor or compressor - A short-circuited circuit board - Gas leaks Keep in mind to quickly turn off the system as soon as you discover that the smell is coming from it or any of its component...