When to replace your hearing aids

Hearing aid domes are small silicone tips that sit in the ear canal and direct sound from the receiver into the ear. They are one of the most frequently replaced components because they come into regular contact with earwax and moisture.

Domes should typically be replaced every one to three months, but this can vary depending on how much earwax you produce and how often you wear your hearing aids. Signs that it is time to replace your domes include: reduced sound clarity or volume; visible earwax buildup; a dome that no longer fits securely; or any cracking, tearing, or deformation.

Replacing domes regularly is one of the simplest ways to maintain consistent sound quality and keep your hearing aids hygienic. Your hearing care professional can recommend the right dome size and style for your ear canal and hearing aid model.

The ear hook (also called an earhook or sound tube) is the curved plastic component that connects a behind-the-ear (BTE) hearing aid to the ear mould or tubing. It plays an important role in directing sound into the ear canal.

Ear hooks typically need replacing every six to twelve months, though this depends on how frequently the hearing aid is worn and how the device is handled. Over time, ear hooks can become brittle, discoloured, or cracked due to exposure to body heat, perspiration, and daily use.

Signs that your ear hook may need replacing include: visible cracks or breaks; a loose connection; whistling or feedback that was not present before; or reduced sound quality that cannot be resolved by cleaning alone. If you notice any of these signs, contact your hearing care professional for a replacement.

An earmold is a custom-made piece that fits inside the ear canal and connects to a behind-the-ear hearing aid via tubing. Because earmolds are shaped to fit your specific ear anatomy, they play a key role in both comfort and sound delivery.

Unlike domes, earmolds are not replaced as frequently, but they do need attention over time. Most earmolds last between two and five years, depending on the material, how well they are maintained, and any changes in the shape of your ear canal. Children and young people may need new earmolds more often because their ear canals continue to grow.

Signs that your earmold needs replacing include: a poor fit that causes the hearing aid to feel loose or fall out; persistent feedback or whistling; visible damage such as cracks, hardening, or discolouration; or an earmold that feels uncomfortable after years of use. Speak with your hearing care professional if you notice any of these changes.

Hearing aid filters (also known as wax guards or cerumen filters) are small components placed at the opening of the speaker or receiver to prevent earwax and debris from entering the hearing aid. They are an essential protective element that helps extend the life of your device.

Filters should typically be replaced every one to two months, though the frequency depends on how much earwax you produce. High earwax producers may need to change them more often. Signs that a filter needs replacing include: muffled or reduced sound; a complete loss of sound not caused by the battery; or visible wax buildup on the filter.

Replacing filters is a quick and straightforward task that can usually be done at home using the provided tool. Your hearing care professional can show you how to change them correctly and advise on the right filter type for your model.

The receiver (also called a speaker or loudspeaker) is the component responsible for converting the amplified signal into sound and delivering it into your ear canal. In RIC or RITE hearing aids, the receiver sits directly in the ear canal, making it especially vulnerable to moisture and earwax damage.

Receivers generally last between one and two years, though this varies depending on earwax levels, moisture exposure, and general care. Signs that your receiver may need replacing include: distorted or muffled sound; intermittent or complete sound loss not resolved by changing the filter or battery; or physical damage to the receiver wire.

Because the receiver is an internal component, replacement should be carried out by a hearing care professional. Your specialist can assess the issue and replace it if needed.