This is a classic squirrel in the attic noise.
Squealing noise in attic.
Once human intrusion has been eliminated the next logical course of investigating strange sounds in the attic is to figure out what animal might be up there.
Read below for the details regarding raccoon noises.
Heavy walking or thumping.
They may be chewing to improve passageways or just for fun.
A nest of baby raccoons.
Grinding noises are likely to be made by some type of rodent.
Blower and fan noises such as squeaks squeals and rattles may be transmitted through the duct system.
Daytime noise especially in the morning or evening.
Strange noises in the attic are always alarming because the may be any one of a variety of dangers large and small.
This is a good clue that you ve got a raccoon or a family of coons.
Wall or attic sounds scratching or scurrying from within a wall or ceiling.
Fast scampering medium volume usually in the attic.
Snarling noise in the attic.
Grinding noises are made as rodents chew woodwork.
Grinding noise in the attic.
There are a few possible sources for this sound but none of them ghostly or even worrying enough to call.
The blower wheel and housing will also squeal when they malfunction.
Heavy pounding noises in the attic or ceiling squealing typically a sign of baby raccoons damage to electrical wiring.
You can probably guess what this means a rodent or some other small animal has gotten into your house.
Likely culprits are rats mice grey squirrels and flying squirrels.
Clicking knocking and clanking no that s not the sound of chains rattling in the attic.
Is it scurrying bumping flapping or squeaking.
Rats mice opossums and squirrels don t make vocal noises in the attic.
Mating adults will squeal.
Noises in the attic scratching sounds at night squirrels.
Outdoor fan motors and indoor blower motors squeal loudly when they re going bad.
Likely squirrels or rats rolling nuts.
For some units this sound is normal upon start up.