Feature Contributors

Why Does my Hearing Aid Whistle?

Why Does my Hearing Aid Whistle?


Have you heard someone’s hearing aid make an embarrassing, high-pitched noise? A blockage or leak in the transmission of sound results in an annoying, squealing sound called “feedback.”

Below are a few reasons for feedback along with some simple solutions.


Excessive ear wax is one common cause of feedback.

Hearing aid microphones have the job of picking up sound, which gets funneled through the ear canal. When the ear canal is filled with wax, the amplified sounds make their way back to the microphone. Removing earwax should remedy the problem.


Check the plastic tube if your ear mold is designed that way.

A small tear in the tube can be the culprit. Wear and tear of an old tube can result in shrinkage, leaving a gap between the mold and tubing. A new tubing can easily solve the feedback issue.


Misaligned hearing aid microphones can create feedback.

Your Hearing Care Practitioner can troubleshoot to determine if the problem requires a repair. This malfunction is typically covered under the manufacturer’s original warranty.


A poorly fit hearing aid or earpiece can be the root of feedback issues.

A too small, too open, or ill-fitting earpiece can create feedback. Designing a custom earpiece can easily correct this or changing the style of disposable dome may help.


When a hearing aid is set too loud, feedback can result.

This problem can be resolved by visiting an Hearing Care Practitioner . There are tricks to remedy this, or it is possible that you may need a different solution with more power.


Don’t accept feedback as normal. There are solutions. Ask an Audiologist. We’d love to help.