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The most common reason for this is loose connections. Sometimes you will get a bad batch of light bulbs, but what I tell customers is this. Once you retighten all your connection on the lighting circuit, get light bulbs that are rated for 130v. These filaments are tougher and will last longer than cheaper light bulbs. When looking for these bulbs, dont look at the box. That just tells you what the light bulb will work with. Rather - you will need to look at the top of the light bulb to see the voltage rating that is stamped on the bulb itself.
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What i mean is that if your using pushins on the backs of your switches, you will want to change them to pigtails.
This is a push in:
Then you connect them to the outlet or switch like this:
Now once you change all this out, and it still persists, the other possibility is vibration from slamming doors etc. In that case the solution would be compact fluorescents. They are not prone to this types of instances. And the come with a 5 to 7 year warranty. So if it does burn out - it wont cost you any money.