The most common cause of a burning smell in a heater is dust. If you turn off your furnace or
Heaters can produce a smell when turned on after not being used for a while due to the accumulation of dust or debris on the heating elements. As the heater heats up, these particles may burn off, causing a temporary, often harmless odor. This is common and should dissipate after a short period of use.
Plastic – If your heater smells like burning plastic, the odor will quickly become intolerable. This smell likely means that a foreign object, such as a toy or a humidifier nozzle, has become lodged in the furnace and has been slowly baking away.
Furnace Smells Like Gas or Rotten Eggs
If you're noticing a gas smell from your furnace, or your furnace room smells like rotten eggs, that smell is probably sulfur. This indicates you have a significant natural gas leak, because gas companies add this odor to alert you.
When your furnace kicks on, you may notice a dusty odor as the air first moves through the ducts and vents. Within a few minutes, the smell should disappear. If you notice strange smells, like formaldehyde or any other strong chemical smell, it strongly indicates that your heat exchanger is cracked.
The sweet smell in your car might not be your perfume or the donuts you're taking to work. It could be the heater core. If the heater core is leaking, it will blow the odor of engine coolant through the vents. Coolant smells sweet, almost musty.
If the heat exchanger rusts through or cracks, flue gases, including deadly carbon monoxide could leak into the home resulting in illness and possibly death of the occupants.
Since CO has no odor, color or taste, it cannot be detected by our senses. This means that dangerous concentrations of the gas can build up indoors and humans have no way to detect the problem until they become ill.
A decomposing mouse smells like propane gas or rotting meat.
There are several reasons why you may smell burnt plastic smell in house, including: Overheating appliances or electronics with electrical problems. Electrical circuit breaker malfunctions. Faulty light fixture.
Emergency Heat, also known as Auxiliary Heat, refers to electric resistance heating. This involves little coils of wire with an electric current running through them in your air handler, similar to what you see in a hair dryer.
Electrical issues will often smell like burning plastic or electrical components. If you smell this, turn off your furnace immediately and call a professional to take a look at your unit. Issues involving the electrical components are serious and could be dangerous.
If you notice a rotten egg or sulfur smell after turning on your furnace, this is a very serious concern. You may have a natural gas leak in your home. Why does it smell like that? Natural gas is odorless, so a harmless chemical (mercaptan) is added to give natural gas an odor, so you can easily detect a gas leak.
When you turn on your heater and the heat exchanger warms up, the dust will burn off, producing that burnt smell. The smell should dissipate within a few minutes. However, this means there's a build-up of dust inside the furnace and ducts. You should schedule a duct cleaning.
There are many sources of bad smells in and around the home including spoiled food, mold, volatile organic chemicals, leaky or backed-up pipes and drains, and pet odors. Mixing some household cleaners such as bleach and ammonia or acid can produce toxic fumes. Some toxic fumes such as carbon monoxide are odorless.
It's not normal to smell gas near a furnace unless the unit is faulty. If you smell a faint gas smell near the unit when it's running, it's probably nothing to stress about. Gas furnaces can sometimes emit small gas amounts when running.
One of the most important parts of the gas heater service is a carbon monoxide check to ensure your heater is not affecting your health. Carbon monoxide poisoning can cause headaches, fatigue, and can even kill you. So if you are using gas heaters, ensure you get them serviced regularly by a qualified gas fitter.
The most common symptoms of CO poisoning are headache, dizziness, weakness, upset stomach, vomiting, chest pain, and confusion. CO symptoms are often described as “flu-like.” If you breathe in a lot of CO, it can make you pass out or kill you.
While there are many causes, electrical fires can smell like “burning plastic” or “burning rubber” as the plastic insulation surrounding copper wires inside the walls starts to heat and melt, releasing strong unpleasant chemical odors. If the electrical fire progresses, you may begin to smell wood burning as well.
Propane gas has no odor. Propane companies add a harmless chemical called mercaptan to give it its distinctive “rotten egg” smell. All propane pipeline gas in Connecticut is odorized. If you smell gas near an appliance , it may be just a pilot light that has gone out or a burner valve that is open slightly.
In extreme cases, a cracked heat exchanger can become a fire hazard. If the crack is large enough and allows hot combustion gases to escape, they can come into contact with flammable materials within the furnace or ductwork. This can lead to a fire that poses a significant risk to your home and safety.