The one i m familiar with creates a constant vibration when turned on but perhaps yours just at start up.
Attic light is buzzing.
The contactor on the outside unit was the problem.
There are a couple of things can cause humming or buzzing noise that is coming from your outlet or switch.
Lot of attics have them for heating and cooling.
It s fall and critters like to be in attics.
Similar to the buzzing caused in incandescent bulbs buzzing in fluorescent lights with older ballasts are occurring due to the constant re striking that happens when the ballast is no longer able to regulate voltage properly.
Noises in the attic can come from several different types of animals.
Here are some steps you can take to reduce or eliminate the annoying sound.
It is an indellible experience.
The whole experience is and is as a profound piece of knowledge.
Sometimes central a c systems buzz briefly when cycling on off.
By any chance is there a ventilation fan in the attic.
Noises in the attic should send off alarm signals in your mind to call american animal control llc right away.
And 99 of them leave the home without anyone knowing they were ever there.
If its random it could be a critter squirrel raccoon etc.
Look for light bulbs that indicate directly on the packaging that they can be used with dimmer switches.
Here s a link t.
What s happening inside the switch.
Could be an exhaust fan.
In most cases the buzzing will be heard for a few days and then it will cease due to the insects death.
Replacing the bulbs with a different type of bulb such as a rough service bulb can fix this electric noise.
Hey guys i made this video a while back to show you what i did to fix my buzzing ac unit.
The interrupted current can produce a vibration in the electromagnetic field within the light bulb filament or within the switch itself which can cause a humming or buzzing noise.
A buzzing sound in a standard wall switch is one of several indicators that the switch may be going bad.
The ballast is the device that is used to regulate a fluorescent light s voltage.
Sizzling popping or crackling sounds when a wall switch is turned on and off may well mean the switch is defective or worn out.
A buzzing fluorescent light may just need to be replaced but it could also be caused by an old ballast.
The average home will be used by many insects each fall as they find places to overwinter hibernate and stay warm so there is nothing unusual about this happening.
Some kind of wildlife is often the culprit for the noise in their attic.
Raccoons make certain attic noises.
It is forever known.
Outlet or switch humming.
Typically they automatically cycle on off depending on temperature and humidity.