We expect light bulbs to last for a while, sometimes even years. So when one burns out within days or weeks, it’s not only annoying, it feels like something must be wrong. And often, there is something wrong. If your light bulbs are dying out faster than expected, it’s usually not the bulb’s fault. There could be a number of underlying issues in your home’s electrical system, the fixture itself, or even the environment. Let’s break down the most common reasons light bulbs burn out quickly and what you can do to stop it.
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1. Your Bulbs Are Getting Too Much Voltage
One of the most common reasons a bulb burns out quickly is that it’s receiving too much voltage. In simple terms, your bulb is being fed more power than it was designed to handle. Most homes operate on 120 volts, and most standard light bulbs are rated for that. But if your home is sending out slightly for 125 or 130 volts, it can cause bulbs to overheat and fail early.
This problem is more common in older homes or in areas where power surges happen often. You may notice that your bulbs are unusually bright before they burn out, this is a telltale sign of high voltage.
What to do:
Have a licensed electrician test the voltage at your outlets and fixtures. If it’s too high, installing a whole-home voltage regulator or checking for wiring issues can help protect your bulbs and your other appliances, too.
2. Loose or Improper Connections
If the bulb isn’t screwed in properly, or if the fixture has a loose wire or worn-out socket, it can cause inconsistent contact. This leads to arcing, where electricity jumps across the connection. That tiny spark might not seem like a big deal, but it generates heat and shortens the bulb’s life.
In some cases, even a gently flickering light could be caused by loose wiring or a faulty socket.
What to do:
Turn off the power and check that your bulb is firmly and correctly screwed in. If the problem persists, it’s best to have the socket or fixture inspected by a professional to prevent further damage or fire risk.
3. You’re Using the Wrong Bulb Type
Not all light bulbs are made for every fixture. For example, a high-wattage incandescent bulb used in a small enclosed fixture can generate a lot of heat. That trapped heat damages the filament or internal components and causes the bulb to die early.
This also applies to bulbs in dimmer fixtures. Not all LED or CFL bulbs are dimmable. Using non-dimmable bulbs in dimmer switches often causes flickering, buzzing, or early failure.
What to do:
Always check the fixture label for the recommended bulb wattage and bulb type. If you’re using a dimmer, make sure your bulbs are compatible. And when in doubt, LED bulbs with the right rating for your fixture are usually the best long-term choice.
4. Vibrations and Movement
Light bulbs installed in ceiling fans, garage door openers, or near heavy appliances may be exposed to constant vibration or motion. This is especially bad for incandescent and CFL bulbs, which have delicate filaments or components that can easily break or come loose.
What to do:
Use bulbs specifically rated as “rough service” or “vibration resistant” in these areas. LED bulbs, which don’t rely on fragile filaments, are generally a better option for fixtures exposed to movement.
5. Frequent On and Off Switching
Every time you turn a light on or off, especially with CFLs and some LEDs, it creates a little wear and tear. If you’re flipping lights on and off frequently throughout the day, it can add up and reduce the lifespan of the bulb.
This is particularly true for areas like closets, hallways, or bathrooms where lights are turned on for only a few seconds or minutes at a time.
What to do:
Consider using LED bulbs that are rated for frequent switching. You can also install motion sensors or timers to reduce unnecessary switching and extend bulb life.
6. Overheating Due to Poor Ventilation
Some light fixtures are designed more for looks than function. When bulbs are used in fixtures that trap heat, like recessed can lights or sealed ceiling domes, the temperature inside can rise quickly, especially if using high-wattage bulbs. That trapped heat shortens the lifespan of both incandescent and LED bulbs.
What to do:
Make sure the bulbs you’re using are rated for enclosed or recessed fixtures. When possible, switch to LEDs, which generate less heat and are designed to last longer even in tighter spaces.
7. Old or Faulty Light Fixtures
Sometimes the fixture itself is the problem. Worn-out sockets, frayed wires, and internal corrosion can create unstable conditions for any bulb. In older homes, this is a common and often overlooked issue. No matter how many new bulbs you screw in, they won’t last long if the fixture is compromised.
What to do:
If you’ve tried changing bulbs and still have issues, it may be time to replace the fixture or have an electrician inspect it. It’s a small investment that can save you from constant replacements and potential electrical hazards.
Fix the Problem, Save Time and Money
Constantly replacing light bulbs is more than just a hassle; it’s a sign that something isn’t right. By identifying the root cause of the problem, whether it’s electrical, environmental, or simply using the wrong bulb, you can put a stop to frequent burnouts and enjoy a more reliable, energy-efficient home.
Still not sure what’s going on with your lights? Our licensed electricians are here to help. From diagnosing electrical issues to installing new fixtures, we’ll make sure your lighting is safe, efficient, and long-lasting.