Is your Lasko space heater running louder than usual or not heating as effectively? Dust buildup could be to blame. Over time, dirt and debris clog the intake and exhaust vents, reducing airflow, efficiency, and even creating potential fire risks. Knowing how to clean a Lasko space heater properly is essential for safe, quiet, and efficient operation, especially during heavy winter use.
The good news: cleaning your Lasko heater does not require tools, disassembly, or technical skills. In fact, you should never open the unit, as doing so voids the warranty and exposes you to electrical hazards. Instead, a simple external cleaning using a vacuum, compressed air, and a soft brush is all it takes. This guide walks you through every step safely and effectively.
Safety First: Unplug and Cool Down
Before touching any part of your heater, safety must come first. Electrical appliances like space heaters pose serious risks if handled while powered or hot.
Always Unplug the Heater
Never attempt cleaning while plugged in. Even standby power can cause accidental startup or shock. Unplug from the wall outlet and keep it disconnected throughout the entire process.
Allow Time to Cool
If the heater was recently running, wait at least 30 minutes before starting. Touch the casing lightly to confirm it is cool to the touch, especially around the top and sides where heat exits.
Never Open the Unit
Lasko space heaters are sealed units. Opening them invalidates the warranty and exposes high voltage components. All cleaning must be done externally only, with no screws removed and no panels pried open.
Tools You Will Need for Lasko Heater Cleaning
You do not need specialty equipment. Most cleaning tools are likely already in your home.
Essential Cleaning Supplies
Vacuum cleaner with brush attachment. This safely removes surface and deep dust without scratching the plastic housing.
Can of compressed air. This blows out trapped particles from narrow vents and hard to reach areas.
Soft bristled brush or toothbrush. This loosens caked on dust in grill slats without damaging the plastic.
Lint free microfiber cloth. This is for wiping the exterior only if needed.
Well ventilated workspace. This prevents dust from spreading indoors.
Pro Tip: Use a dry toothbrush, never one with moisture. Even small amounts of water can damage internal electronics if forced into vents.
Step by Step Cleaning Process
Follow these seven steps to restore airflow, silence noise, and improve heating performance.
Step 1: Vacuum Intake and Exhaust Vents
Start with the vacuum to remove loose dust before pushing debris deeper with air.
Attach the brush nozzle to your vacuum hose.
Slowly move over the side intake grills and top exhaust vent, keeping the nozzle just outside the openings.
Use overlapping strokes to cover all areas thoroughly.
Focus on corners and edges where dust accumulates most.
Visual Cue: If you see visible dust inside the vents, vacuum again at different angles.
Step 2: Blow Out Dust with Compressed Air
Now reverse the airflow by pushing trapped particles out through the exhaust.
Hold the compressed air can upright. Tilting can spray moisture.
Use short 1 to 2 second bursts into the top exhaust vent.
This forces dust toward the side intakes where it can be captured.
Warning: Never shake or tilt the can. Moisture discharge can damage electrical parts.
Step 3: Vacuum Again to Capture Dislodged Dust
After blowing air through the top, switch back to the vacuum.
Re-clean the side intake grills to catch dust blown outward.
Repeat the blow from top then suck from sides cycle once more for best results.
This two-step method is proven to remove up to 90 percent more dust than vacuuming alone.
Step 4: Brush Stubborn Grime from Grill Slats
Some models collect packed dust that resists suction and air.
Use a dry soft bristled brush or clean toothbrush.
Gently scrub along the grill slats in back and forth motions.
Avoid metal tools, abrasive pads, or excessive pressure. Plastic can scratch or crack.
Common Mistake: Pushing too hard with a stiff brush can deform grill fins and reduce airflow permanently.
Step 5: Wipe Exterior Surfaces If Needed
Only clean the outer casing if it is visibly dusty or smudged.
Dampen a microfiber cloth with water and wring it completely dry.
Wipe the body gently, avoiding controls, vents, and seams.
Immediately dry with a second clean cloth.
Never spray cleaner directly onto the unit.
Important: Do not use chemical cleaners, disinfectants, or wet wipes. They can degrade plastic or seep into internal components.
Step 6: Ensure Complete Dryness
Even minimal moisture poses a risk.
Let the unit sit unplugged for 15 to 30 minutes after cleaning.
Confirm no dampness remains on or near vents.
Double-check if you used any moisture during wiping.
Rule of thumb: When in doubt, wait longer. It is safer to delay use than risk electrical failure.
Step 7: Restore Power and Test Operation
Now verify your cleaning was successful.
Plug the heater into a working outlet.
Turn it on and let it run for 3 to 5 minutes.
Listen for unusual sounds and watch for error signals if applicable.
Normal: A faint burning dust smell for the first few minutes.
Not Normal: Strong odor, smoke, or no power. Stop immediately and unplug.
Model Specific Tips for CC23155 and Elite Collection
Advanced models like the Lasko CC23155 Motion Plus have smart sensors and oscillation, but cleaning remains the same with extra care.
Keep Sensors Clear
Dust on motion sensors can reduce detection accuracy.
Gently vacuum around sensor windows, usually near the base or top.
Do not use compressed air directly on sensors. Pressure may damage delicate components.
Oscillation Mechanism
The rotating base does not require lubrication or internal cleaning.
Ensure the unit sits on a flat, stable surface to prevent strain on moving parts.
No Replaceable Filter Exists
Despite some user confusion, Lasko space heaters do not have washable or replaceable filters.
The term filter in manuals refers to the intake grill system that traps dust.
This is cleaned externally, not removed.
Misconception Alert: You cannot wash the filter because there is no filter to remove. Cleaning the grills is the filtration maintenance.
How Often Should You Clean Your Lasko Heater
Frequency depends on usage and environment, but here is a clear schedule.
Monthly Cleaning for Standard Use
For heaters used a few hours daily in average homes.
Ideal during winter months when in regular rotation.
Bi-Weekly Cleaning for High Dust Conditions
Homes with pets, carpeting, or allergy sufferers.
Units placed near floors or in dusty rooms.
Before First Use After Storage
Always clean after summer or off season storage.
Prevents initial burning smell and ensures peak efficiency.
Time Estimate: Full cleaning takes 15 to 25 minutes once you are set up.
Maintenance Tips for Long Term Performance
Extend your heater is life and efficiency with these daily habits.
Position Matters
Place the heater on a hard, level surface, not carpet or rugs.
Keep 3 feet of clearance on all sides, especially from furniture and curtains.
Reduce Dust Intake
Vacuum the room regularly to minimize airborne particles.
Avoid placing the heater near pet bedding or laundry areas.
Storage Best Practices
Store in a cool, dry place away from humidity.
Use a breathable fabric cover like a cotton sheet, not plastic. Trapped moisture promotes mold and corrosion.
Pro Tip: Wrap the cord loosely, never snap it tightly around the unit to avoid damaging internal wiring.
Troubleshooting After Cleaning
Even careful cleaning can lead to issues. Here is how to fix them fast.
Unusual Noise During Operation
Cause: Loose debris still rattling inside.
Fix: Repeat compressed air from the top and vacuum from sides.
Weak Heat Output
Cause: Vents still partially blocked.
Fix: Re-clean intake grills with brush and vacuum. Check for obstructions behind the unit.
Persistent Burning Smell
Cause: Heavy dust burned off slowly. Could indicate deep buildup.
Fix: If smell lasts more than 10 minutes, unplug and contact Lasko support.
Heater Will Not Turn On
Cause: Moisture in components or tripped circuit.
Fix: Ensure the unit is fully dry. Test the outlet with another device. Reset the circuit breaker if needed.
Never attempt internal repairs. Contact customer service for persistent issues.
Warranty and Manufacturer Guidelines
Following Lasko is official protocol protects your investment.
Never Disassemble the Unit
Opening the case voids the warranty.
Internal components are sealed for safety and compliance with UL standards.
Official Support Resources
Visit www.lasko.com for model specific manuals.
Video tutorials, warranty registration, and customer service contact are also available.
Recommended Video: How to Clean Your Lasko Tower Fan or Heater on YouTube demonstrates the exact vacuum and air method on a real unit.
Frequently Asked Questions About Cleaning a Lasko Space Heater
Can I use water to clean the inside of my Lasko heater?
No. Never use water, liquid cleaners, or wet cloths on or inside the unit. Moisture can damage internal electrical components and create serious safety risks. All cleaning must remain external only.
How often should I clean my Lasko space heater?
Clean monthly during standard winter use. For high dust environments, homes with pets, or allergy sufferers, clean every two to three weeks. Always clean before first use after seasonal storage.
Does my Lasko heater have a filter that needs replacing?
No. Lasko space heaters do not have replaceable or washable filters. The intake grill system acts as the dust barrier and is cleaned externally. There is no internal filter to remove or replace.
Why is my heater still smelly after cleaning?
A faint burning dust smell is normal during the first few minutes of operation after cleaning. If the smell persists for more than 10 minutes or is strong, unplug immediately and contact Lasko customer support.
Can I open my Lasko heater to clean inside?
No. Opening the unit voids the warranty and exposes you to electrical hazards. All cleaning must be done externally only. Internal components are sealed for safety and compliance with UL standards.
What should I do if my heater will not turn on after cleaning?
Ensure the unit is completely dry. Test the outlet with another device to confirm it is working. Check and reset the circuit breaker if needed. If the problem persists, contact Lasko customer service.
Final Thoughts on Cleaning Your Lasko Space Heater
Regular cleaning keeps your Lasko space heater efficient, quiet, and safe. The process is simple: unplug and cool down, vacuum the intake and exhaust vents, use compressed air to blow out trapped dust, brush any stubborn debris, wipe the exterior if needed, ensure complete dryness, and test operation. Using only external cleaning methods protects your warranty and your safety.
By spending just 20 minutes every few weeks, you will prevent costly breakdowns, reduce fire risk, and enjoy better heat where you need it most. Make heater cleaning part of your seasonal routine. Your comfort and safety depend on it.
