why do my light bulbs keep burning out

Why Do My Light Bulbs Keep Burning Out?

Do you often find yourself replacing light bulbs in your home? You may be tempted to think that it’s because the bulbs have reached their natural lifespan. However, more often than not, there is an underlying problem that can cause your light bulbs to burn out faster than usual, and understanding what it is and how to fix it can help save you money on replacements!

In this blog post, we’ll walk through why your lightbulbs might be burning out before they should, common causes of premature bulb failure, and straightforward steps you can take to ensure they last longer.

Why Do My Light Bulbs Keep Burning Out?

There are several possible causes of light bulbs burning out prematurely. The most common reasons include the following:

High Voltage

Faulty wiring is one possible cause of light bulbs burning out prematurely. In particular, when a high current passes through a lamp, it may cause the light bulb to become excessively hot and burn out.

Unfortunately, this can often be due to having too high a voltage running through the bulb – something that many households may not even know they’re doing wrong.

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This is especially true when using bulbs such as LED bulbs or CFLs, designed to run using lower voltages than their traditional incandescent counterparts.

why do my light bulbs keep burning out

To avoid the risk of damage from voltage spikes or surges, it is essential to ensure that the light bulbs in your home are perfectly matched with their recommended wattage and component requirements – taking extra precautions for unusual types of bulbs like those found in modern fixtures.

Excessive Fixture Vibration

Excessive fixture vibration can cause light bulbs to burn out prematurely. It’s possible to have vibrations coming from many different sources, ranging from small sources like fans to significant sources such as industrial equipment.

The vibration of this kind can cause excessive stress to components that are not designed to handle it, like the wiring and insulation in a light bulb.

This added stress will add extra strain on the fragile filament within the bulb resulting in a shorter lifespan and possible premature failure. Taking steps to address the source of vibration is key to ensuring the proper longevity of light bulbs and other electrical components.

Depressed Socket Tab

Depressed socket tabs are possible causes of light bulbs burning out prematurely. This is because when the tab on a light socket is depressed, it does not make proper contact with the bulb, and as a result, it cannot receive enough electrical current to stay lit for the long term.

why do my light bulbs keep burning out

Furthermore, if the tab does manage to make contact with the bulb despite its depression due to corrosion or rust, this will also cause too much resistance, leading to the same effect: premature burnout of the bulb.

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To mitigate this possible issue, it is essential to regularly inspect sockets for signs of depressed tabs and seek professional help if necessary to ensure that lights are functioning correctly.

Incompatible Bulb Selection

Selecting an incompatible light bulb can cause a plethora of problems. Incompatible bulbs may cause lights to flicker, or they can significantly reduce the lifespan of a Bulb, causing them to burn out prematurely.

This can be incredibly frustrating and expensive over time! The improper selection of light bulbs can also be hazardous, leading to possible electrical fires in extreme circumstances.

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To avoid these possible issues, check that you’re purchasing the correct type and size of bulb before installation. Doing so will ensure your safety and get the most from your bulb investment.

Loose Connections

Over time wiring can become brittle, and vibration from slamming doors or other disturbances in its environment can cause them to become loose. While this could explain why your light bulbs are burning out prematurely, it doesn’t always explain the entire problem.

why do my light bulbs keep burning out

Other possible causes include voltage fluctuations within the wiring of the building or house and frequent on/off cycles of the switches used to turn your lights on and off. It’s possible to pinpoint the exact cause with electrical testing and diagnostics, but in some cases, loose connections present a risk for premature bulb burnouts.

How Long Should a Light Bulb Last?

For many individuals, the lifetime of a typical light bulb can seem disappointingly short. However, modern advances in lighting technology have significantly increased the lifespan of many fixtures.

Conventional incandescent bulbs last an average of only 1,000 hours, but LED light bulbs are designed to endure far longer – up to 100,000 hours in some cases! Throughout its expected 20-year operating life, this equates to a considerably reduced need for light maintenance or replacement over time – not to mention a notable decrease in energy costs!

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Long gone are the days when one had to grit their teeth each time another lightbulb burned out; with LED lighting solutions now on offer providing unprecedented longevity, you can trust that your home is lit with efficiency and style for years to come.

What Factors Affect the Lifespan of a Light Bulb?

The various factors that affect the lifespan of a light bulb are varied. The age and quality of the bulb itself, environmental conditions in which it is placed, and vibration or improper installation can all impact its expected performance.

However, if proper measures are taken to ensure a high-quality light fixture and correct electrical wiring, most bulbs should last the average lifespan prescribed by their manufacturer.

It is worth taking a close look at your current lighting setup to determine whether there are any areas where improvements can be made – perhaps you could benefit from modern LED bulbs, or some light maintenance and repair might be in order.

How Can You Tell if Your Light Bulb Is About To Burn Out?

This is a tricky question to answer, as most light bulbs will give you no indication of their imminent failure. However, there are a few signs to look out for that may indicate the need for replacement:

  • Flickering or dimming lights
  • Unusual colors in the light
  • Hot spots near bulbs
  • Humming or buzzing sounds coming from a lamp or light fixture.

In most cases, these are signs that a bulb may be reaching the end of its life and should be replaced as soon as possible. Additionally, it’s always best to check your wiring and other electrical components for any loose connections or faulty equipment that could be causing the issue.


What Is a Dimmer Switch?

Dimmer switches are a type of lighting control device that allows you to adjust the brightness of lights in your home. It works best with incandescent light bulbs, halogen, or LED lights and is an effective way to save energy while still having the flexibility to change the lighting levels in a room.


Lighting is an essential part of any home or commercial building, and it’s well worth investing in reliable light fixtures that will last for many years. By taking time to investigate the root cause of why light bulbs are burning out prematurely, you can help ensure your safety and get the most from your bulb investment.

Proper installation and electrical maintenance will go a long way in increasing the life of any light bulb, whether it is an incandescent or LED solution. With these tips in mind, you should have no problem keeping your home bright.