HVAC Odors You Need to Know About

Nobody likes unpleasant smells and when you talk about heating, ventilation and air conditioning, you
are bound to come across odors every now and then. It is important that you are able to identify these
odors for safety’s sake.

There are five major HVAC-related odors that you need to know about: electrical, gas, musty, oil and burning odors.


Obviously an electrical odor is more likely electrical in origin. It could be caused by overheating of parts. When you do
smell it, make sure you immediately turn off your unit and check for the source.


A gas odor can be very dangerous. It is imperative that when you smell this and it appears to be a gas
leak, you must open all the windows to let the gas out. You must then get out yourself and call for help.
If it doesn’t seem to be a gas leak, there may be other causes. If you notice the smell to be coming from
the supply vents, then there is a big chance that you’re not smelling gas. Dust that has accumulated in
the heat exchanger could be burning off and is emitting the gas-like smell. When you do smell gas, make
sure that you find the source.


A damp and musty odor is unmistakeable. It is caused by dampness usually created by water entering
the house, damp basements or water damage to the ducts. Usually it doesn’t pose a problem to your
unit itself and is more often than not an issue with the immediate environment.


Burning odors can be alarming and, like gas odors, its source must be immediately located. Sometimes
you may even see smoke coming from your unit. It could be caused by something getting caught in the
ducts or possibly burning electrical wirings. If this happens, turn off your unit and immediately call for
assistance from the repair team.


Oil odors may be caused by an oil leak. This will be easy to detect because you are bound to see oil in
the surrounding area. If it doesn’t seem to be an oil leak, there may be a problem with the burner. Look
out for smoke coming from the burner and listen for weird sounds when it is turned on. Call for service
and have the unit looked at.

Whatever the case may be, it is always a good idea to call for a service team to visit you should you
encounter any problems. Professional services are available so that you don’t have to worry your pretty
little head about any of your HVAC worries.