Space Heater Smells Like It’s Burning? (Plastic, Chemicals, Hair, & More)

Over time or due to certain conditions, users might notice a peculiar burning smell coming from their space heater. Identifying the reasons behind these smells is crucial for the safety and efficiency of the device.

Space heaters can emit various odors due to reasons like a new unit’s initial run, dust accumulation, malfunctioning components, or foreign objects. Common smells include burning chemicals, dust, plastic, rubber, hair, or electrical wires. To address these odors, users should inspect and clean the heater, ensure proper ventilation, and consult the user manual. If odors persist or indicate potential hazards, consider professional repair or replacement.

In this post, we’ll explore the common causes behind space heater odors and how to address them effectively.

If Your Space Heater Smells Like Burning Chemicals, Residues, or Oils

A chemical burning smell from a space heater can be alarming.

New heaters may emit this smell during their first few uses due to residues from the manufacturing process, coatings, or lubricants. In fact, this is so common that it is often called ‘new space heater smell.

What to Look For:

• An acrid, chemical-like odor that doesn’t resemble natural materials.
• The smell is strongest during the first few uses of a new heater.
• Any visible residues or oily substances on the heater’s external body or internal components.
• The heater has been stored near or in contact with household cleaning agents or chemicals.

How to Fix It:

• Initial Burn-Off: For new heaters, run them in a well-ventilated area for an hour or so to allow any manufacturing residues or coatings to burn off.
• Clean External Surfaces: If you suspect the heater has come into contact with chemicals, wipe down and clean the space heater with a damp cloth. Avoid using chemical cleaners as these might exacerbate the issue.
• Inspect Internal Components: With the heater unplugged, if the design allows, open the casing and look for any signs of residues or oily substances. If safe, gently clean them using a cloth or appropriate cleaning agent.
• Ventilation: When you first notice the smell, turn off the heater and ensure the room is well-ventilated to dissipate the odor. Once you’ve identified and addressed the source, it’s safe to use the heater again.
• Consult the Manual: Some heaters may have specific guidelines regarding initial use or cleaning to prevent such odors. Always refer to the manufacturer’s recommendations.

If Your Space Heater Smells Like Burning Dust

One of the most common causes of a burning smell from a space heater is the accumulation of dust, lint, or other small particles on the heating elements. When the heater is turned on after a long period of disuse or after collecting dust, these particles burn off, creating a distinct burnt smell.

What to Look For:

• A mild, musty burning odor that typically dissipates after a short period of usage.
• Visible dust accumulation on the heater’s exterior grates or internal components.
• The smell is stronger when the heater is first turned on but lessens over time.

How to Fix It:

• Clean the Space Heater: Before each use, especially after prolonged storage, clean the heater’s exterior with a soft brush. For internal cleaning, refer to the manufacturer’s instructions. Some heaters allow for easy access to internal parts, while others do not.
• Proper Storage: When storing the heater, place it in a clean, dry area and consider covering it to prevent dust accumulation.
• Routine Maintenance: Make it a habit to periodically clean the heater, especially before the colder seasons start.
• Ventilation: When using the heater for the first time in a while, ensure the room is well-ventilated. This will help clear out the burnt dust smell faster.

If Your Space Heater Smells Like Burning Plastic

The distinct odor of burning plastic from a space heater can be alarming and might indicate potential hazards. This smell can arise due to various reasons, such as the heater’s internal components getting overheated, plastic casings coming in contact with heating elements, or even due to factory residues from when the heater was manufactured.

What to Look For:

• A sharp, chemical odor resembling burnt plastic.
• Visible signs of melting or deformation on the heater’s plastic components.
• The smell persists or gets stronger over time instead of dissipating.

How to Fix It:

• Inspect the Heater: Turn off and unplug the unit. Check for any visible signs of melting, deformities, or any parts that may have shifted closer to the heating elements.
• Factory Residue: If the heater is brand new, the smell might be due to manufacturing residues burning off. Use the heater in a well-ventilated area for a short period to see if the smell disappears.
• Avoid Obstructions: Ensure that no foreign plastic objects or items are near or on the heater that could potentially melt due to the heat.
• Seek Professional Advice: If the smell persists or if you notice any damage, it might be best to consult with a technician or consider replacing the heater.
• Check the Cord: Sometimes, a damaged power cord can also produce a burning plastic smell. Ensure that the cord is intact and free from any damage. If there are signs of wear or damage, consider replacing the cord.

If Your Space Heater Smells Like Burning Rubber

Overview:
Space heaters contain various and rubber components. Over time, or due to manufacturing defects, these components might come in contact with heating elements or get overheated themselves, leading to a distinctive burning rubber smell.

What to Look For:

• A sharp, chemical-like burning smell.
• Signs of melted or deformed plastic or rubber parts around the heater.
• Unusual heating of specific parts of the heater which aren’t typically warm.

How to Fix It:

• Immediate Disconnection: If you detect this smell, it’s crucial to immediately turn off and unplug the heater. Operating it continuously could be hazardous.
• Visual Inspection: After allowing the heater to cool down, inspect it for any signs of melted or damaged plastic or rubber components.
• Consult a Technician: If you identify any damaged parts, it’s advisable to consult a technician for repair rather than attempting a DIY fix, as this could relate to the heater’s internal components.
• Consider Replacement: If your space heater is old or continues to emit this smell even after repairs, it might be time to invest in a new unit to ensure safety.

If Your Space Heater Smells Like Burning Hair

The smell of burning hair is distinct and can be quite alarming when it emanates from a space heater. This typically occurs when stray hairs, pet fur, or even small insects find their way into the heater and come into contact with the hot components.

What to Look For:

• A sharp, acrid odor distinct from other burning smells.
• Hair, fur, or debris visible on or inside the heater’s vents.
• Increased smell when the heater is in close proximity to areas frequented by pets.

How to Fix It:

• Regular Cleaning: Ensure that you clean the external vents and surfaces of the heater regularly using a soft brush or vacuum attachment to remove any hair or debris.
• Internal Inspection: With the heater unplugged, if the design permits, open the casing and check for any trapped hair or insects. Carefully remove any that you find.
• Position Away from High Traffic Areas: If you have pets, consider placing the heater in a location where pet hair is less likely to accumulate.
• Use Protective Screens: Some heaters come with protective screens or filters that can prevent larger debris, including hair, from entering the unit. Ensure these are clean and properly positioned.
• Ventilation: If you notice the smell, turn off the heater and ventilate the room to clear the odor. Once you’ve addressed the source of the smell, it’s safe to turn the heater back on.

If Your Space Heater Smells Like Burning Electrical Wires

The smell of burning electrical wires is a serious concern, indicating potential fire hazards or malfunctions in the heater’s internal wiring. Such a smell is often caused by overheated or damaged wiring, short circuits, or other internal electrical issues. Immediate attention is required to prevent hazards.

What to Look For:

• A sharp, metallic burning odor reminiscent of burnt rubber or hot metal. The space heater might also smell like fish.
• Smoke or sparks emerging from the heater.
• The heater becoming unusually hot to the touch.
• Flickering lights or irregular operation of the heater.
• A tripped circuit breaker or blown fuse associated with the heater’s power source.

How to Fix It:

• Immediate Shutdown: At the first sign of an electrical burning smell, immediately turn off and unplug the heater. This is essential for safety.
• Inspection: With the heater unplugged, visually inspect the cord, plug, and if possible, any visible internal wiring for signs of damage, fraying, or melting.
• Avoid DIY Repairs: Due to the risk associated with electrical repairs, it’s advisable not to attempt a DIY fix unless you have the appropriate expertise. Instead, consult a professional or the manufacturer.
• Check Circuit Breakers and Fuses: A repeatedly tripping circuit breaker can be a sign of electrical issues with the heater. Ensure you’re not overloading your home’s electrical circuits.
• Replacement: If the heater has a persistent electrical smell or shows signs of damage, it might be safer and more cost-effective to replace it than to repair it.
• Safety First: Ensure your home has functional smoke detectors, especially in rooms where you frequently use electrical appliances like space heaters. Regularly test and replace their batteries as needed.
• Consult the Manual: The user manual may have troubleshooting tips specific to the model, or it might offer guidance on who to contact in case of such issues.