Space heaters are a popular way to heat small spaces and rooms during the cold winter months. However, it can be frustrating when your trusty space heater suddenly refuses to turn on. Before you toss your non-working heater and buy a new one, try some troubleshooting to identify the issue. Many common space heater problems can be easily fixed at home.
This comprehensive guide will walk you through the top reasons your space heater won’t power on, along with actionable tips to get it working again.
Common Causes For Space Heaters Not Turning On
There are several possible explanations why your space heater fails to power on when you need it:
Power Source Issues
The most obvious place to start troubleshooting is to check whether the power source is working correctly:
- Plugged into working outlet? Make sure your heater’s plug is fully inserted into a working wall outlet. Try plugging a lamp or other device into the outlet to confirm power is flowing properly.
- Damaged power cord? Inspect your heater’s power cord for damage like frayed wires or broken connections. A damaged cord can prevent power from reaching the heating unit.
- Tripped breaker? Space heaters pull a lot of wattages, especially on high heat settings. It’s possible for them to trip a home’s circuit breaker if too many other appliances share the circuit. Check your electrical breaker or fuse box.
- Power strip issues? Never plug a space heater into an extension cord or power strip. The high energy draw can overload them. Make sure it’s directly plugged into the wall outlet.
Unit Overheating
Space heaters are designed to safely power off if their internal temperature exceeds safe operation limits. This is an important feature to prevent fires. But it also means your heater won’t turn back on until it cools down sufficiently.
- Allow your space heater to fully cool off for at least 10-15 minutes before attempting to power it on again after an overheating event.
- Make sure your heater vents aren’t blocked by furniture, curtains, etc. Proper airflow is crucial.
- Clean dust buildup inside the unit that can cause overheating over time. Consult your device’s manual for cleaning procedures.
Tip-Over Switch Activation
Many space heaters have a safety feature called a tip-over switch. This automatically cuts power if the device gets knocked over.
The tip-over safety will lock your heater in the “off” position until you manually reset it:
- Return the heater to an upright position on flat, stable ground.
- Press the tip-over reset button, usually found on the base of the unit. This reactivates the heating function.
- Avoid placing your heater on uneven surfaces in the future to prevent accidental tipping.
Broken Thermostat
A broken thermostat is another common culprit for space heaters failing to power on properly. This key component regulates the electrical heating elements. Issues include:
- Stuck thermostat: If the thermostat dial or buttons seem unresponsive, this likely indicates an internal failure. You’ll need to replace the faulty thermostat.
- Inaccurate temperature sensing: If your heater turns on inconsistently, even when set at a constant temp, the thermostat may be malfunctioning. Again, replacement is required.
- Loose wiring connections: Over time, internal wiring connecting the thermostat to heating elements can work itself loose. This breaks the power circuit. Wiring may need to be repaired or replaced.
Damaged Heating Elements
At the heart of all electric space heaters are intricate heating elements that convert electrical current into radiant warmth. These delicate components can fail over time. Symptoms include:
- No heat despite heater powering on: This points to partially or fully burned-out heating elements. They’ll need replacing.
- Uneven heating: If you notice cold spots mixed with warm spots, this likely indicates heating element damage. Certain sections have failed.
- Strange smells during operation: A distinct electrical burning odor usually means the heating elements are severely worn or touching internal housing. Stop using the device immediately in this case.
Also Read: 12 simple space heater safety tips for this winter
Step-By-Step Troubleshooting for Non-Working Space Heaters
The following checklist offers a systematic troubleshooting process to revive an unresponsive space heater:
Step 1: Is the device plugged directly into wall outlet?
- Move heater to different known working outlet
- Test outlet function with another appliance first
- Never use extension cord or power strip
Step 2: Inspect the power cord
- Check entire length of cord for damage
- Look for frayed wiring, loose plug connection
- Replace cord if uncertain
Step 3: Give overheated unit time to cool off
- Allow minimum of 15 minutes for temperatures inside to decrease
- Make sure airflow vents aren’t obstructed
Step 4: Reset tip-over safety if activated
- Return device to upright position if knocked over
- Press tip-over reset button on base
- Ensure future placement is on flat, stable surface
Step 5: Try turning unit on
- Toggle main power switch to reset internal functions
- Twist thermostat dial through full range
- Press multiple times if buttons unresponsive
Step 6: Consider replacing internal components
- Broken thermostat = inconsistent on/off functionality
- Faulty heating element = no heat
- Both require replacement parts
Don’t continue attempting to power on a clearly malfunctioning unit. Doing so risks serious hazards like electric shock or fire. Consulting a technician is the next logical step if DIY efforts don’t restore normal operation.
When To Call A Professional Repair Service
While many basic space heater malfunctions can be addressed at home, more complex electrical and mechanical issues require professional service.
Seeking expert diagnosis is wise if:
- You smell burning odors coming from the device
- The unit sparks or emits smoke
- Troubleshooting checks all tests are normal, but failure persists
- Internal damage is likely requiring disassembly to access parts
- You don’t feel comfortable working on electrical appliances
Hiring a certified repair technician may cost more upfront but it can:
- Properly trace root cause of failure
- Repair issues you can’t diagnose yourself
- Avoid unsafe tampering that exacerbates problems
- Prevent need for total unit replacement
Be prepared to describe all failure symptoms in detail. This helps steer troubleshooting and repairs. Expect a service fee for diagnostic time plus any parts/labor for fixes.
When To Replace Your Space Heater
If your intermittent space heater is over 10 years old or has required frequent repairs, replacement may be the most cost-effective option long-term.
Signs indicate reaching end of usable lifespan:
- Multiple components failing at once
- Difficulty finding discontinued replacement parts
- Diagnosis reveals extensive internal damage
- Repair cost exceeds 50% of new heater price
- Safety features no longer pass testing
Ideally, space heaters operate reliably for 5-10 years before requiring major service. While durable, their challenging role means components wear faster than other appliances.
When the cost of fixes outweighs buying new ones, retirement is usually the smartest path forward.
Choosing A New Space Heater
If your troubleshooting determines it’s time for a replacement space heater, use the opportunity to upgrade your model’s performance and safety features.
Key Buying Considerations
- Output wattage: Match heating capacity to room size so unit isn’t struggling to warm the space.
- Safety certifications: Look for ETL, UL, or CSA marks signaling electrical safety testing.
- Tip-over protection: Required for portable models to prevent fire hazards.
- Auto shut-off: Helps prevent overheating and hazardous unattended operation.
- Thermostat accuracy: Precise temperature control prevents energy waste from overheating.
- Noise level: Quieter fans keep the unit from being disturbingly loud.
- Warranty: Multi-year warranties show manufacturer confidence in lifespan. 1 year is bare minimum.
Top-Rated Space Heater Product Categories
Ceramic Furnace Heaters
- Heat rooms evenly using glowing ceramic plates
- Silent operation
- Models as low as $40
Oil-Filled Radiator Heaters
- Retain warmth even after powering off
- Safer enclosed heating elements
- Prices from $50 to $150
Micathermic Panel Heaters
- Thin yet powerful directional warmth
- Rapid room heating speed
- Cost ranges from $60 to $200
Forced Fan Space Heaters
- Strongest airflow to heat quickly
- Often feature oscillation
- Entry models under $30
Taking time to select the right replacement heater for your needs will provide years of future comfort and energy savings.
Preventing Future Space Heater Malfunctions
To maximize your new or repaired space heater’s lifespan, be diligent about regular maintenance:
- Always operate on a flat, stable surface away from foot traffic
- Never block vents or airflow in any way
- Follow all manufacturer guidelines for cleaning
- Store unit sealed in a dry location when not in use to deter dust buildup
- Consider buying a protective carrying case for portable heaters
- Visually inspect the power cord before each use for damage
- Never leave a space heater running unattended for long periods
- Follow electrical load limits to avoid tripping breakers
- Adjust thermostat lower when leaving a heated room to save energy
By properly caring for your space heater, you’ll be rewarded with many more years of reliable, safe operation during cold weather.
Troubleshooting Recap
Before giving up on a formerly trusty space heater that fails to power on, methodically work through possible causes:
- Try different outlets to check electricity flow
- Inspect condition of power cord
- Allow overheated unit proper cool-down period
- Ensure tip-over safety isn’t preventing activation
- Test functionality of thermostat
- Assess heating element damage
- Reset internal breakers
In many cases, there is an easy fix that will restore full functionality. Taking the time to troubleshoot issues can stretch your heater’s lifespan considerably.
Know when to call in a professional repair service versus total replacement. And remember to practice safe operation, maintenance, and storage habits to avoid future malfunctions.
With this comprehensive troubleshooting guide for space heaters not turning on, you have the knowledge to revive your unit or seek proper repairs when needed. Stay warm!