Over the warm months while the furnace is not used dust from the home will settle in the combustion chamber.
Burning plastic smell from furnace vents.
The melting of casings can also cause a burning rubber smell.
If you smell something that smells a lot like gunpowder this is probably because there s a circuit board or other electronic component in your furnace that s burning up.
You see smoke coming from your vents.
If something is overheating it can lead to more expensive damage.
The heat exchanger of your furnace gets extremely hot when it operates and this heat will burn any dust that has accumulated on the parts over the summer months.
Turn off your furnace and remove your registers so you can clean or remove any objects that don t belong.
There are 3 potential reasons you ve noticed a burning plastic smell coming out of your air conditioning vents.
Have an hvac specialist check for burning electrical components if you notice a burning electrical smell coming from your vents.
Something in your ac is overheating.
This could be anything from a plastic bottle cap to one of your children s plastic toys.
After a while plastic shielding on wires can wear out crack and occasionally fall into the heating area of your furnace resulting in a nasty burning plastic smell.
Cleaning the plastic out can be a real pain as well.
Sometimes a burning plastic smell can be the sign of an electrical failure.
The smell of plastic burning could mean a foreign object has made its way into your heating unit.
Turn off the heat and call a professional.
This is not the first time you ve used the heat and the burning smell won t go away.
The most common reason you might experience a burning smell when you first turn on your heat for the season is that dust has settled on your furnace heat exchanger.
Plastic coated wires that may have caused an electrical fault the fan belt.
The smell of burning plastic could be a sign of an overheated household appliance a kitchen accident or a problem with the hvac system.
Malfunctions in the heater can cause the plastic wire casings to fail and meltdown.
Heaters and furnaces may smell of burnt plastic when their parts are broken or worn out.
Another smell coming from your heater could be that of burning plastic or rubber.
In most cases the dusty burning smell coming from your furnace is actually quite normal.
Usually this means a foreign object such as a toy has found its way into your heating system.
A plastic or rubber object burning will give off fumes and can be hazardous to breathe in.
There s a fire in your home somewhere and the ac is re circulating the smell it s just your heater burning off dust.
This is very normal and you will generally notice that the smell goes away within a few hours.
This could mean that something larger than dust fell onto your heat exchanger coils.
Parts that may need to be replaced include.
If your house smells of burning plastic take caution.
It should go without stating that this is a serious problem.
