In article , Dimitrios Paskoudniakis
wrote:
I have a two-story family room, with two indoor flood lights in the ceiling,
so it's a pain in the butt to replace them, bringing in my extension ladder.

I'm using the kind of bulb that the previous owner had, a 120V 65W indoor
flood light bulb, which has a several inch diameter almost flat top. The
bulb housing has a spherical cover with an opening for the bulb so that the
bulb top completes the sphere. The housing can be rotated for directional
lighting.

For one of the two lights, I've noticed that a replacement bulb keeps
burning out within a couple of days of replacing. I just replaced the other
one for the first time after we've been here 21 months, and it was there
before that.

Any advice on how to resolve the one light fixture with a new bulb burning
out within a couple of days would be appreciated.

First, I would try a different brand of bulb, especially if you are not
using a "Big 3" one (GE, Philips or Sylvania).

See if you can find the original bulb (that lasted 21-plus months) or
remember what brand and model it was.

Second, see if the problematic fixture is being shaken by children
jumping or bouncing basketballs or dropping heavy objects upstairs.

Third, if the fixtures are on different circuits, see if the problematic
one has excessive voltage or is prone to unusual variations in brightness
or is fed by a subpanel. Lightbulb blowouts are a common symptom of
an neutral in a line feeding a panel, which can cause some circuits in
your house to get overvoltage while others get undervoltage. This is not
a common problem, but it is serious and if you actually have that it needs
to be fixed urgently.

Fourth, see if water is somehow getting into the fixture and dripping
onto the bulb.

- Don Klipstein )