Yes, assuming you mean the temperature of the filament. A few degrees of
fixture or bulb temperature even around 100 degrees Celsius does nothing to
an incandescent filament already operating at 2427 Celsius. In addition,
the tungsten filament is self-regulating as its resistance is a function of
Even if the fan is off, there may be vibration in the house that gets
transmitted through the fan structure to the bulbs. I had a trouble call
once where the complaint was that the bulbs in a dining room chandelier were
burning out too fast. The bulbs were the flame-shaped candelabra type and
had long filaments with very little filament support. I couldn't find any
high-voltage problems which was my first thought; but while I was working on
the chandelier, there was a thump upstairs and the chandelier shook so hard
that the various parts rattled. It was one of the kids in his bedroom
jumping off the top of his bunk bed onto the floor. That kind of shock when
the lamp is burning will kill any lamp because it welds several of the
filament coils together and the rest of the filament gets a higher voltage.
It then burns significantly hotter and fails faster.
A 100 watt bulb fillament will ALWAYS be hotter than a 40 watt
That and the filament just plain fails from the vibration. No shorting
required. That's why rough service bulbs have thicker filaments - as
do some "appliance duty" and "ceiling fan" bulbs (which also sometimes
have additional filament supports)
replying to Tomsic, Richard Riley wrote:
Just type in 4.5 uf fan capacitor (or the value on the bad one) into ebay. I
bought one for $6 with tax and shipping, and another is coming from Hong Kong
for $1 PP. Probably two to three weeks. Now I should have a spare.
They sell "ceiling fan bulbs" which are basically rough service bulbs
without the thicker glass. Appliance bulbs are also good. Standard
duty bulbs often have a VERY short life in a fan installation due to
vibration. Particularly at low or medium speed on fans that change the
number of poles to change the speed.
Incandescent bulbs get more sensitive to shock and vibration as they age
because the filament gets brittle. Halogen bulb filaments are the worst as
they're thin to start with and the coils are closer together than filament
coils in standard bulbs.
Handle incandescent bulbs gently once they've burned for a while.
Buy the ones with no "coil" at all, just a straight filament? Like I said in
an earlier post, I've only replaced bulbs in one fixture (and that rarely
used). The other five fans in the house still have the original bulbs.
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