If your space heater is smoking, immediately turn it off, unplug it, and allow it to cool; check for dust buildup or damaged components before use.
Seeing smoke from your space heater can be alarming. While some causes are simple to fix, others may require professional help. This guide covers all potential reasons for smoking and how to address them safely.
Common Causes of Space Heater Smoking
Dust Accumulation
Dust burning off the heating elements is the most common cause of smoking. This typically happens when:
- The heater hasn’t been used in months
- It’s the first use of the season
- The unit wasn’t properly stored
Electrical Issues
Faulty wiring or electrical components can cause smoking. Look for:
- Burning plastic smell (not just dust)
- Discolored outlets
- Flickering lights when heater turns on
Overheating Components
Several factors can cause overheating:
- Blocked air vents
- Faulty thermostat
- Placing heater too close to walls or furniture
Step-by-Step Fixes for Smoking Space Heaters
For Dust-Related Smoking
- Unplug the heater immediately
- Let it cool completely
- Use compressed air to clean internal components
- Wipe exterior with a dry cloth
- Run the heater in a well-ventilated area for 30 minutes
For Electrical Issues
If you suspect electrical problems:
- Stop using the heater immediately
- Check your circuit breaker
- Inspect the power cord for damage
- Test the outlet with another device
- Consider replacing older heaters (10+ years)
When to Call a Professional
Contact an electrician or replace your heater if you notice:
- Persistent smoke after cleaning
- Burning plastic smells
- Sparks or unusual noises
- Tripped breakers when heater turns on
Preventing Future Smoking Issues
Regular Maintenance
Follow these maintenance tips:
- Clean your heater monthly during use
- Store properly in offseason (covered, dry location)
- Inspect power cords regularly
Proper Usage
Ensure safe operation by:
- Keeping 3 feet clearance on all sides
- Using only on hard, level surfaces
- Plugging directly into wall outlets (no extension cords)
Alternative Heating Options
If your space heater keeps smoking despite repairs, consider these alternatives:
- Electric heaters that look like wood stoves – safer and more efficient
- Indoor propane heaters – for larger spaces
- Oil-filled radiators – no exposed heating elements
For more information on heater safety, visit the Consumer Product Safety Commission or check your local regulations like those in Chicago’s heat ordinance.
