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Why is your hearing aid whistling? 

We’re here when you need us, so if you’re worried about your hearing, book an appointment for a free hearing health check.
Hearing aid wearers sometimes complain of whistling noises coming from their devices – and how annoying these sounds can be.

Because of the way hearing aids work, feedback can occur, creating a high-pitched noise that’s unbearable to listen to for long stretches. However, this almost certainly has a root cause, and fixing it will help solve the problem in no time!

Boots Hearingcare takes a look at some of the common reasons why your hearing aid may have started whistling…

Earwax build-up

Hearing aids transmit sound into your ear canal, but if the sound is blocked in some way, it bounces back. A feedback loop then ensues. Excess earwax obstructing the aural canal can interfere with your hearing aid and how you perceive sound, with potentially dangerous consequences. Professional earwax removal should keep the ear canal clean and your hearing aid whistle-free. Just make sure you check that there’s no wax left over in the actual earpiece or problems may still arise.

Too high a volume

Having your hearing aid volume turned up too high can also force sound backwards, causing a whistling noise. Try turning down the device slightly, and do not raise it at all past a certain point, or you could end up with an intense sound wave that more closely resembles shrieking. If you are struggling with adjusting the volume of your hearing aid, a doctor or hearing healthcare professional will be able to help

Incorrect fittings

If your hearing aid isn’t fitted correctly, it may whistle, so make sure you’ve put it in the right way – it could even be painful otherwise. First, check that the device is free from damage and earwax build-up. Next, try putting the receiver further into your ear, as a loose wear can cause hearing aids to whistle. Finally, if neither of these steps work, be sure to see a hearing health professional and have your device adjusted. Remember, losing or gaining weight is also known to affect your ears and, consequently, the fit of any earmolds.

Broken or misaligned components

Often, a hearing aid whistling is a sign of one or more malfunctioning device components – which will need to be replaced promptly so that the noise can go away for good. When it comes to mechanics, hearing aids are likely to become faulty through;
 
  • Worn tubing
  • Warped earmolds
  • Dislodged microphones

Other causes

Occasionally, everyday actions can affect your hearing aid and bring on a whistling sound. These include:

  • Wearing hats, scarves, and other head coverings
  • Giving people hugs
  • Excessive jaw movement, e.g. with chewing or smiling
The good news is that because all of the above are environmental factors, they can be tweaked so as not to hinder the help your hearing aid provides.

How you can avoid hearing aid whistling

Modern technology means that most hearing aids now are designed with automatic feedback cancellation. However, whistling can still occur, and you should know how to combat it.

Start by ensuring your devices remain free from obstructions – including hats, scarves, earmuffs, etc. – and never fall asleep with them still inside. This has the potential to trap sound from the receiver and cause it to re-enter the microphone, creating a feedback loop.
On a day-to-day basis, keep the tip of the hearing aid or earmold secure inside your ear. Also, if you have a volume control, we recommended to leave it as close to default as possible.

Finally, remember to always have your ears checked regularly for impacted wax, which could inadvertently be damaging the hearing aids and producing that whistling noise you find so aggravating.

A whistling hearing aid can be extremely annoying and upsetting, so don’t let the problem persist any longer. Visit an audiologist or your GP for advice on how best to stop hearing aid whistling.

Is your hearing aid giving you trouble with its constant whistling? Find your nearest Boots Hearingcare store and seek help from our hearing health professionals…