Unwelcome or not it sounds as if there is a wild animal making those scratching sounds in the attic or walls looking for somewhere to rest its head and rear its young.
Theres a kink in the attic.
If the unit is making a continuous clicking noise but won t turn on it could be an electrical problem.
By spraying closed cell foam on the ducts before burying them in attic.
At night attic can sometime make loud creaking and cracking sounds.
There may be something damaging the blower fan.
If there s a constant clicking air conditioning noise you could have a problem.
There are a number of wild critters that could be causing the noises but among the most common are things like squirrels bats rats mice raccoons skunks opossums and birds.
Art plumbing ac electric has been performing attic rat removal in florida since 1983.
Heaping insulation over the ducts is fine in dry climates but can cause condensation on the duct insulation jacket in humid climates.
A clicking air conditioner noise that starts slow and gets faster could come from an obstruction.
The doe s building america program recommends beds buried encapsulated ducts.
There s one caveat to your attic suggestion however.
It can ofter sound as if the roof is broken in some way or the roof is going to collapse.
Our pest control professionals will perform attic insulation removal to expose the pests hiding places.
Homeowners requiring attic rat removal need to ensure they engage the services of a company that provides thorough attic cleaning and restoration.