Buzzing electrical noise ?

JayC98 · Apr 11, 2022

Hello,
I have an old 1950s small house with 50 AMPs electrical panel.

Ever since I added blow-in insulation in my attic, I hear this constant buzzing sound throughout my house. There are a lot of electrical wires in the attic that are now buried under the blow-in fiberglass insulation. Could it be causing something to heat up and hence the buzzing sound?

2) Also, a techno just replaced the motor on my simple fridge's evaporator, and I now hear a high pitched buzzing sound from the back of the fridge. Is it also electrical related?

The constant buzz is very annoying. What to do?

Thank you for your advice!

rogerwh · Apr 11, 2022

Is there buzzing when the lights are turned off? Some times the ballast in florescent lights make buzzing noises. Transformers will make noises, sometime. There are transformers all over your house. From the doorbell, furnace to microwave.

dcwired · Apr 12, 2022

I don't see how the insulation over the wiring would cause it. I hope there aren't any open junction boxes covered up. Not that that would cause the noise, just a bad situation if you need to find them. Any recessed cans?
A 50 amp service sounds like time to rewire the house and panel/service.
Try turning off 1 circuit at a time to isolate the source. Also, turn off all power to verify it is electrical.

Buzzing electrical noise ?

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