Troubleshooting Tips: Fix a Lasko Heater That Won’t Turn On

Struggling with a Lasko heater that won’t turn on can be frustrating, especially during those colder months when you’re counting on it to keep you warm. You’re not alone in this predicament; it’s a common issue many face with portable heaters. In this article, we’ll delve into the possible reasons your Lasko heater is giving you the cold shoulder and provide you with practical steps to troubleshoot the problem.

Common Reasons a Lasko Heater Won’t Turn On

When your Lasko heater fails to ignite the warmth, there are several factors you might want to look into. Understanding the most common causes can help you pinpoint the issue and get your heater up and running swiftly.

Power Source Problems
First off, check if your heater is indeed plugged in. It may sound obvious, but it’s often the simplest oversight that’s the culprit. If it’s plugged in and still not working, the outlet might be the issue. Test the outlet with another device to confirm it’s active.

Safety Features Activation
Lasko heaters are equipped with safety features that can cause them to shut off:

  • An overheated unit will automatically turn off due to the built-in thermostat reaching high temperatures.
  • If your heater has fallen over, the tip-over switch will automatically cut the power to prevent any potential hazards.

Faulty Internal Components
Internal issues can also prevent your heater from operating. These can range from a malfunctioning thermostat to a compromised heating element.

  • A thermostat failing to detect the correct temperature can keep the heater turned off.
  • The heating element, if burnt out or damaged, won’t be able to produce heat.

In this scenario, you might require professional assistance to replace the faulty components.

Remember to always refer to the user’s manual for specific troubleshooting instructions tailored to your Lasko heater model. Regular maintenance checks can also preempt these issues, ensuring your heater remains reliable when you need it the most.

Check the Power Source

When your Lasko heater fails to turn on, it’s essential to first investigate the power source. Begin by ensuring that your appliance is plugged in properly; a loose plug can disrupt the power flow. Moreover, it’s not uncommon for plugs to become loosened over time due to movement or bumping of the unit.

Examine the Outlet for Functionality

To exclude the possibility of a faulty outlet, test it with another device. If the alternative device fails to work, the outlet may be the culprit. Electrical circuit issues are not to be taken lightly; if you suspect a problem, contact a certified electrician to avoid potential hazards.

Power Surges and Circuit Breakers

A power surge could have tripped a circuit breaker, cutting off power not just to your heater but possibly other devices as well. Check your home’s circuit breaker or fuse box. If you discover a tripped breaker, reset it and try turning on your heater again.

Extension Cords and Power Strips

If you’re using an extension cord or a power strip with your heater, this could also be a factor. Not all extension cords can handle the high wattage required by heaters. Always use a heavy-duty extension cord with a sufficient rating for your Lasko heater’s wattage. Replace any cord that appears damaged, worn, or overheats during use.

Examine the Thermostat

In troubleshooting your Lasko heater, it’s crucial to check the thermostat. This component regulates the heater’s operation, turning it on and off to maintain the desired temperature. If set incorrectly, your heater might seem unresponsive.

First, ensure the thermostat is set above the current room temperature. By doing so, you’re signaling the heater to kick in. Take a moment to adjust the thermostat slightly above room temperature and wait to see if the heater powers on.

Second, it’s vital to verify the contact. If the unit has been bumped or moved, the thermostat knob may not be in full contact with the internal mechanism. Adjust the dial carefully, feeling for any signs of resistance or clicking that indicates engagement.

Lastly, consider possible wear and tear. Over time, the thermostat might become less responsive or faulty due to continuous use. Dust accumulation inside the thermostat housing can also hinder its functionality. Give it a gentle clean, but be mindful not to damage any internal components.

If your thermostat has a digital display, check for error codes, which can offer clues for specific issues. Reference your owner’s manual to understand what each code means. Resetting the thermostat by turning the unit off, unplugging it, waiting a few minutes, and plugging it back in may resolve minor electronic glitches.

Remember, if your Lasko heater’s thermostat appears faulty after these checks, it may need a replacement or professional service.

Inspect the Heating Element

Sometimes the culprit behind your Lasko heater not turning on is a malfunctioning heating element. The heating element is instrumental in converting electricity into heat. If you’ve ruled out issues with the power source and the thermostat, it’s time to check the heating element.

Ensure the heater is unplugged before you begin. Safety first – you don’t want to risk electrical shock. Visually inspect the heating element for obvious signs of wear or damage. Look for any discolouration or broken coils which are clear indications that the element isn’t functioning properly.

If the visual check doesn’t reveal anything, testing the element with a multimeter is your next step. You’re checking for continuity; a continuous electrical path is crucial for the heating element to work correctly. If your multimeter doesn’t register continuity, the heating element needs replacement.

A heating element that’s failing to heat up might also be due to an accumulation of dust and debris, which can insulate the element and prevent it from working efficiently. A thorough clean, using instructions specific to your model, can sometimes resolve this issue.

Remember, when dealing with any sort of electrical appliance repair, if you’re not confident in your ability to diagnose or fix the problem, it’s always best to seek professional help. Qualified technicians can safely and effectively manage repairs, ensuring your heater operates as it should.

Assess the Safety Features

When your Lasko heater won’t turn on, it’s essential to consider its built-in safety features. These measures are designed to prevent accidents and may be the reason your heater is inactive.

Overheat Protection: This crucial safety feature automatically shuts off the heater if it overheats. If your Lasko heater has stopped working, allow it to cool down for a few minutes before attempting to turn it on again.

Tip-Over Switch: Most Lasko heaters are equipped with a tip-over switch that cuts power if the heater is not upright. Make sure your heater is placed on a stable, flat surface, and check to see if it has been accidentally knocked over.

Thermal Fuse: A thermal fuse is a one-time use safety device that prevents your heater from overheating. If the fuse has blown, your heater will not turn on until the fuse is replaced. Check your manual for guidance on checking the thermal fuse and replace it if necessary.

Cool-Touch Exterior: Although this feature does not directly prevent the heater from turning on, it’s an important safety element. Ensure the vents are not obstructed, as this could cause the safety features to engage and the heater to shut off.

Remember to unplug your heater before inspecting any safety components. Should you discover a defective safety feature, do not attempt to bypass it. Bypassing safety mechanisms puts you at risk of fire, electric shock, or injury. Instead, contact Lasko customer support for assistance or take your heater to a professional for repair.


Tackling the issue of your Lasko heater not turning on can be straightforward when you know what to check for. Remember to start with the basics like ensuring your unit’s power source is secure and the outlet is functioning. If you’ve encountered a power surge or a tripped breaker, addressing these can often resolve the problem. Don’t overlook your thermostat settings and cleanliness either as these can impede your heater’s performance. For more complex concerns such as a faulty heating element or malfunctioning safety features, it’s best to seek professional advice. Safety should always be your priority so never attempt to bypass any of the heater’s built-in protections. Should you need further assistance, reaching out to Lasko customer support is a wise choice. With these tips, you’ll be well on your way to restoring warmth to your space.