That sudden high-pitched squeal from your hearing aid is embarrassing, and it can make you want to turn the device off altogether. The good news is that whistling is one of the most common hearing aid complaints, and it usually has a simple fix. Sometimes it’s earwax or a loose fit. Other times it’s a worn part or a setting that needs adjusting. Here’s what causes it, what you can safely check at home, and when to call your audiologist.
What Is Hearing Aid Feedback?
The whistle you hear is called feedback. It’s the same thing that happens when a microphone gets too close to a speaker at a concert.
Your hearing aid picks up sound with a microphone, makes it louder, and sends it into your ear through a small speaker called a receiver. If some of that amplified sound leaks back out of your ear and the microphone catches it again, the device keeps re-amplifying the same sound. The result is a loop that shows up as a whistle.
A quick chirp is normal, especially when you’re putting the aid in, adjusting it, or covering it with a hat, a phone, your hand, or a hug. Modern hearing aids have built-in feedback management, but even good technology can’t catch everything.
Whistling that keeps happening during everyday wear is a sign that sound is escaping your ear. It’s worth fixing rather than turning the volume down and putting up with it.
Common Causes of Hearing Aid Whistling
Feedback often creeps in gradually, even with hearing aids that used to work perfectly. The most common causes are:
- The dome, earmold, or custom hearing aid isn’t fully seated in your ear
- The fit has loosened over time as your ear canal changes shape
- Earwax is building up in your ear canal
- The wax guard, receiver opening, vent, or tubing is clogged
- The volume or gain is set higher than your fit can handle
- A dome is torn, or the tubing has become stiff, cracked, or loose
- Moisture, corrosion, or damage has affected the microphone or receiver
- Your hearing has changed and your aids need new programming or a different fit
Talking, smiling, and chewing move your jaw and can also break a fit that’s already borderline.
Is It Feedback or Tinnitus?
The two are easy to confuse, but they behave differently.
Feedback is a real sound produced by the hearing aid. It only happens while the device is on, and it changes when you adjust the volume, reseat the aid, move your hand away, or switch it off.
Tinnitus is a sound your brain creates without any outside source. People describe it as ringing, buzzing, hissing, clicking, or roaring, and it doesn’t go away when you take your hearing aids out. In fact, wearing properly fitted hearing aids often makes tinnitus less noticeable, because they bring more everyday sound back into your day.
How to Stop Hearing Aid Whistling at Home
Start with the simple, low-risk steps below. Work over a table or soft cloth with clean, dry hands so a dropped aid doesn’t get damaged, and never put anything into your ear canal to clear a problem.
- Take the aid out and make sure it’s in the correct ear (check the red and blue color markings).
- Look over the dome, earmold, tubing, and receiver opening for wax, cracks, or loose connections.
- Clean the parts with the brush, pick, and cloth that came with your hearing aids.
- Replace the wax guard or dome only if you’ve been shown how.
- Put the aid back in, making sure it’s fully seated and the wire or tubing sits comfortably.
- Return the volume to the level your audiologist set.
- Keep hair, hats, glasses, and phones away from the microphones.
- Restart the aid and check that the battery is fresh or fully charged.
Avoid water, household cleaners, pins, or sharp tools unless the manufacturer says a specific method is safe.
Is It a Broken Hearing Aid or a Simple Fix?
If the whistling stops after you reseat the aid, clean it, lower the volume, or move something away from it, you’re probably dealing with an everyday issue rather than a defect.
It’s also normal for a hearing aid to whistle when you hold it in your hand while it’s turned on. There’s no ear canal to hold the sound in.
A device problem becomes more likely if the whistling continues even when the aid is correctly inserted, clean, and set to the right volume. Other warning signs include:
- Distorted or crackly sound
- Sound cutting in and out
- Weak output
- Buttons or controls that don’t respond
- Random shutoffs
- Trouble charging
- A cracked case
Worn tubing, a faulty receiver, or damaged internal parts need professional service. If you wear two hearing aids, compare the noisy one with the quiet one, but don’t swap them between ears. Your audiologist can test the device, then determine whether it needs a deep cleaning, reprogramming, a replacement part, or a repair by the manufacturer.
Signs Your Hearing Aid Doesn’t Fit Well
A good fit feels secure and comfortable, with no sore spots or constant pressure. When the seal is poor, amplified sound slips out, especially when you’re talking, eating, or moving your jaw.
Watch for these signs:
- Whistling during everyday conversation and activities
- A dome or earmold that slowly works its way out of your ear
- A receiver wire that sticks out instead of lying flat against your head
- An aid that shifts when you chew, talk, or smile
- Soreness, redness, or irritated spots in or around your ear
- A constant “plugged” or echoey feeling that doesn’t improve with time
- Sound quality that changes when you press the aid deeper into your ear
Ears change over time, and domes, tubing, and earmolds wear out. Depending on the cause, the fix might be a different dome size or style, a new wire length, fresh tubing, a remade earmold, or an adjustment to the programming.
Ready for a Hearing Aid Check?
Constant whistling doesn’t mean you need new hearing aids. In many cases, a professional cleaning, a small adjustment, or a new dome or earmold solves the problem.
At Angela Batini, M.S. Audiology in Redding, CA, we’ll check your ears, test your hearing, and evaluate how your devices fit and perform. From there, we can tell you whether you need wax removal, reprogramming, replacement parts, a new earmold, or a repair.
Call or text us at 530-441-2659 to schedule your hearing aid check.
This article is for educational purposes only and isn’t medical advice. For guidance specific to you, schedule an appointment.