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10 Common Causes of Flickering Lights Every Homeowner Should Know
10 Common Causes of Flickering Lights Every Homeowner Should Know
If you've noticed flickering lights in your home, you're not alone. Flickering lights can be caused by a number of issues- some very simple, and some requiring a more in-depth solution.
Read about the 10 most common reasons that you're experiencing a flicker in your home, and if/when you should get a professional involved.
If you've noticed flickering lights in your home, you're not alone. Flickering lights can be caused by a number of issues- some very simple, and some requiring a more in-depth solution.
Read about the 10 most common reasons that you're experiencing a flicker in your home, and if/when you should get a professional involved.
1) A Loose Light Bulb
1) A Loose Light Bulb
Many times, the simplest explanation is the correct one.
If only one light fixture is flickering, simply tighten the light bulb that is in that fixture.
Over time, vibration can "rattle" light bulbs from making the right connection with the socket, causing intermittent flickering. This is the easiest solution to try first.
Many times, the simplest explanation is the correct one.
If only one light fixture is flickering, simply tighten the light bulb that is in that fixture.
Over time, vibration can "rattle" light bulbs from making the right connection with the socket, causing intermittent flickering. This is the easiest solution to try first.
2) The Bulb is Failing
2) The Bulb is Failing
LED, CFL, and incandescent bulbs all have a life span.
Before assuming you have a huge electrical issue on your hands, try swapping the flickering bulb for a new bulb of the proper wattage for that fixture.
Sometimes the flickering is the bulb's way of letting you know it is on its' way out.
LED, CFL, and incandescent bulbs all have a life span.
Before assuming you have a huge electrical issue on your hands, try swapping the flickering bulb for a new bulb of the proper wattage for that fixture.
Sometimes the flickering is the bulb's way of letting you know it is on its' way out.
3) A Faulty Light Switch
3) A Faulty Light Switch
After years of use, light switches can simply wear out.
This is especially common in older light switches attempting to power new fixtures- they are simply not able to handle the modern power requirements.
Dimmer switches also tend to wear out faster than normal switches.
Signs of a failing switch include:
- Flickering whenever the switch is touched
- Crackling sounds
- A loose-feeling switch
- Lights that only work in certain positions
Replacing a failing switch is a simple and easy repair for a licensed electrician.
After years of use, light switches can simply wear out.
This is especially common in older light switches attempting to power new fixtures- they are simply not able to handle the modern power requirements.
Dimmer switches also tend to wear out faster than normal switches.
Signs of a failing switch include:
- Flickering whenever the switch is touched
- Crackling sounds
- A loose-feeling switch
- Lights that only work in certain positions
Replacing a failing switch is a simple and easy repair for a licensed electrician.
4) Loose Electrical Connections
4) Loose Electrical Connections
Loose wiring is one of the most common (and most dangerous) causes of flickering lights in a home.
Connections can loosen over time due to:
- Normal thermal expansion
- Home settling
- Improper installation
- Vibration
Loose connections create electrical resistance, which generates heat and can become a fire hazard.
If multiple lights flicker or the problem appears randomly, it's time to have your electrical system inspected.
Loose wiring is one of the most common (and most dangerous) causes of flickering lights in a home.
Connections can loosen over time due to:
- Normal thermal expansion
- Home settling
- Improper installation
- Vibration
Loose connections create electrical resistance, which generates heat and can become a fire hazard.
If multiple lights flicker or the problem appears randomly, it's time to have your electrical system inspected.
5) Overloaded Circuits
5) Overloaded Circuits
Modern homes use far more electricity than homes built decades ago.
If lights dim or flicker whenever:
- The HVAC system starts
- A microwave runs
- A hair dryer turns on
- A vacuum cleaner is plugged in
Your circuit may be approaching its capacity.
An electrician can determine whether the circuit can simply be redistributed or if additional circuits should be installed.
Modern homes use far more electricity than homes built decades ago.
If lights dim or flicker whenever:
- The HVAC system starts
- A microwave runs
- A hair dryer turns on
- A vacuum cleaner is plugged in
Your circuit may be approaching its capacity.
An electrician can determine whether the circuit can simply be redistributed or if additional circuits should be installed.
6) Large Appliances Starting Up
6) Large Appliances Starting Up
Some flickering is actually normal.
Air conditioners, refrigerators, well pumps, and other motors require a large amount of electricity during startup.
A brief dimming (that lasts less than a second) is generally expected.
However, severe dimming or prolonged flickering may indicate an electrical issue that should be evaluated.
Some flickering is actually normal.
Air conditioners, refrigerators, well pumps, and other motors require a large amount of electricity during startup.
A brief dimming (that lasts less than a second) is generally expected.
However, severe dimming or prolonged flickering may indicate an electrical issue that should be evaluated.
7) Problems with the Electrical Panel
7) Problems with the Electrical Panel
Older electrical panels can develop problems such as:
- Loose breaker connections
- Worn bus bar
- Failing breakers
- Corrosion
Because every circuit passes through the electrical panel, problems here can affect multiple areas of the home.
Electrical panels issues should only be diagnosed and repaired by qualified professionals.
Older electrical panels can develop problems such as:
- Loose breaker connections
- Worn bus bar
- Failing breakers
- Corrosion
Because every circuit passes through the electrical panel, problems here can affect multiple areas of the home.
Electrical panels issues should only be diagnosed and repaired by qualified professionals.
8) Utility Company Problems
8) Utility Company Problems
Sometimes the problem isn't inside your home at all!
Issues such as:
- Loose utility connections
- Damaged transformers
- Tree branches contacting power lines
- Neighborhood power fluctuations
can all cause lights to flicker.
If several neighbors experience the same issue, your utility provider may need to further investigate.
Sometimes the problem isn't inside your home at all!
Issues such as:
- Loose utility connections
- Damaged transformers
- Tree branches contacting power lines
- Neighborhood power fluctuations
can all cause lights to flicker.
If several neighbors experience the same issue, your utility provider may need to further investigate.
9) Voltage Fluctuations
9) Voltage Fluctuations
Your home's electrical system is designed to operate within a specific voltage range.
Voltage that's consistently too high or too low can lead to:
- Flickering lights
- Premature appliance failure
- Electronics manufacturing
- Increased wear on HVAC equipment
A licensed electrician can measure the voltage throughout your home and identify the source of the fluctuation.
Your home's electrical system is designed to operate within a specific voltage range.
Voltage that's consistently too high or too low can lead to:
- Flickering lights
- Premature appliance failure
- Electronics manufacturing
- Increased wear on HVAC equipment
A licensed electrician can measure the voltage throughout your home and identify the source of the fluctuation.
10) Dangerous Wiring Problems
10) Dangerous Wiring Problems
If your lights flicker along with any of the following symptoms, turn off the affected circuit and contact an electrician immediately:
- Burning smell
- Warm outlets or switches
- Buzzing sounds
- Sparks
- Frequent breaker trips
- Partial power loss
These symptoms may indicate a serious wiring defect that should never be ignored.
If your lights flicker along with any of the following symptoms, turn off the affected circuit and contact an electrician immediately:
- Burning smell
- Warm outlets or switches
- Buzzing sounds
- Sparks
- Frequent breaker trips
- Partial power loss
These symptoms may indicate a serious wiring defect that should never be ignored.
When Should You Call an Electrician?
When Should You Call an Electrician?
You should schedule an inspection if:
- Multiple lights flicker throughout the house
- Lights flicker every day
- Breakers trip frequently
- Outlets feel warm to the touch
- Lights dim dramatically when appliances start
- The flickering has gradually gotten worse
- Your home is more than 30 years old and has never had its electrical system evaluated
Many electrical issues start small- before becoming expensive and/or dangerous.
Catching them early often results in simpler, less costly repairs.
You should schedule an inspection if:
- Multiple lights flicker throughout the house
- Lights flicker every day
- Breakers trip frequently
- Outlets feel warm to the touch
- Lights dim dramatically when appliances start
- The flickering has gradually gotten worse
- Your home is more than 30 years old and has never had its electrical system evaluated
Many electrical issues start small- before becoming expensive and/or dangerous.
Catching them early often results in simpler, less costly repairs.
Can Flickering Lights Be a Fire Hazard?
Can Flickering Lights Be a Fire Hazard?
Short answer, yes.
While a loose bulb isn't usually dangerous, loose wiring, failing breakers, damaged connections, and overloaded circuits can all generate heat.
According to the U.S. Fire Administration, electrical failures are a significant cause of residential fires each year.
If flickering is accompanied by buzzing, heat, burning odors, or recurring breaker trips, it should be treated as a priority.
Short answer, yes.
While a loose bulb isn't usually dangerous, loose wiring, failing breakers, damaged connections, and overloaded circuits can all generate heat.
According to the U.S. Fire Administration, electrical failures are a significant cause of residential fires each year.
If flickering is accompanied by buzzing, heat, burning odors, or recurring breaker trips, it should be treated as a priority.
Preventing Electrical Problems
Preventing Electrical Problems
Routine electrical maintenance can help prevent many common issues.
Homeowners should:
- Replace damages switches and outlets promptly
- Avoid overloading power strips
- Schedule inspections for older homes
- Install whole-home surge protection
- Upgrade outdated electrical panels when necessary
- Have any recurring electrical issue professionally diagnosed (rather than just resetting breakers)
Routine electrical maintenance can help prevent many common issues.
Homeowners should:
- Replace damages switches and outlets promptly
- Avoid overloading power strips
- Schedule inspections for older homes
- Install whole-home surge protection
- Upgrade outdated electrical panels when necessary
- Have any recurring electrical issue professionally diagnosed (rather than just resetting breakers)
Need Help Diagnosing Flickering Lights?
Need Help Diagnosing Flickering Lights?
At Ampler Electrical Services, we help homeowners identify the real cause of flickering lights- not just the symptom.
Whether the issue is a loose connection, overloaded circuit, aging electrical system, or something more complex, our electricians perform thorough troubleshooting to find the problem and recommend the proper solution.
If your lights in the Wilmington, NC and surround areas are flickering, or your electrical system is not performing the way it should, contact Ampler Electrical Services today to schedule a professional inspection.
At Ampler Electrical Services, we help homeowners identify the real cause of flickering lights- not just the symptom.
Whether the issue is a loose connection, overloaded circuit, aging electrical system, or something more complex, our electricians perform thorough troubleshooting to find the problem and recommend the proper solution.
If your lights in the Wilmington, NC and surround areas are flickering, or your electrical system is not performing the way it should, contact Ampler Electrical Services today to schedule a professional inspection.
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