Yes, you can dry out a digital hearing aid, but the method matters

Digital hearing aids are water-resistant, not waterproof. If yours gets wet — from sweat, rain, shower steam, or accidental submersion — you can often save it by drying it properly. The key is speed and the right technique. Leaving a wet hearing aid in a drawer or on a shelf will trap moisture inside and damage the circuitry. A few hours of active drying, done the right way, can restore it to working order.

The longer a hearing aid stays wet, the higher the risk of permanent damage. Start drying as soon as you notice moisture. If you wait days, corrosion inside the device may have already begun, and no amount of drying will fix it.

Key Takeaways

  • Remove the battery when ready and leave the battery door open — this stops the device from powering on and short-circuiting.
  • A hearing aid dryer box (electric or silica-gel based) is the fastest and safest method; overnight drying usually restores function.
  • Do not use a hair dryer, oven, or direct heat, as high temperatures can warp the plastic casing and damage internal components.
  • If you do not have a dryer box, place the open hearing aid in a container with uncooked rice or silica gel packets for 24 to 48 hours.
  • If the hearing aid still does not work after drying, contact your audiologist or the manufacturer — internal corrosion may require professional repair.

The when ready steps: battery and ventilation

The moment you realize your hearing aid is wet, remove the battery. An open battery door allows air to circulate inside the device and prevents the battery from powering the circuitry while moisture is present. A powered-on wet hearing aid can short-circuit and cause permanent damage in minutes.

Gently pat the outside of the hearing aid with a soft, lint-free cloth — a microfiber cloth or paper towel works. Do not rub or squeeze. If water is visible in the battery compartment, use a dry cloth corner to absorb it, but do not poke at the internal components. Leave the battery door open and set the hearing aid in a warm, dry place with air movement — near (but not directly in front of) a fan, or on a shelf in a bathroom with the exhaust fan running.

Using an electric hearing aid dryer

An electric dryer box is the most reliable method. These devices use gentle heat and air circulation to remove moisture without damaging the hearing aid. Popular models include the Dry & Store, Zephyr, and similar brands sold by most audiologists and online retailers. The cost ranges from $40 to $100, and many people who wear hearing aids keep one at home for routine maintenance.

To use an electric dryer: place the open hearing aid (battery door open, battery removed) inside the box, close the lid, and run it for 4 to 8 hours or overnight. Most models have a timer and will shut off automatically. In the morning, insert a fresh battery and test the hearing aid. If it powers on and produces sound, it has dried successfully. If not, repeat the drying cycle for another 8 hours before assuming the damage is permanent.

Silica gel and rice: low-cost alternatives

If you do not have an electric dryer, silica gel packets or uncooked rice will absorb moisture, though more slowly. Silica gel is more effective than rice because it absorbs moisture faster and does not leave dust inside the hearing aid. You can buy silica gel packets online or salvage them from packaging of electronics, vitamins, or shoes.

Place the open hearing aid (battery removed, battery door open) in a small container — a plastic food container, ziplock bag, or cup works. Bury it in a bed of silica gel packets or uncooked rice so the device is completely surrounded. Seal the container and leave it for 24 to 48 hours. After that time, remove the hearing aid, brush away any rice dust gently with a soft cloth, insert a fresh battery, and test it. Silica gel leaves no residue, so you can skip the brushing step if you used gel.

What not to do when drying a hearing aid

Do not use a hair dryer, heat gun, or oven. The plastic casing of a hearing aid will warp or melt at temperatures above 140°F (60°C), and the internal components are even more heat-sensitive. A hair dryer on high heat can reach 150°F or higher in seconds. Ovens and microwaves are even worse and will destroy the device.

Do not submerge the hearing aid in water, alcohol, or any liquid, even to rinse it. Do not blow compressed air into the device — the pressure can force water deeper into the circuitry. Do not attempt to open the hearing aid yourself to dry the inside; the casing is sealed and designed to be opened only by a technician. Do not leave the hearing aid in direct sunlight for hours, as UV exposure can degrade the plastic and battery.

When to contact your audiologist

If the hearing aid does not produce sound or produces only a faint, crackling sound after 24 hours of drying, internal corrosion or component damage may have occurred. Contact your audiologist or the manufacturer. Many manufacturers offer repair or replacement under warranty if the damage is water-related and the device is still under coverage. If your hearing aid is out of warranty, repair costs typically range from $200 to $400, depending on the model and the extent of the damage.

Some audiologists have professional-grade drying equipment that can dry a hearing aid faster than home methods. If you are in a hurry and cannot wait 24 hours, ask whether your audiologist offers this service. A few hours in a professional dryer may be faster than overnight drying at home, though the outcome is usually the same.

Preventing water damage in the future

Most digital hearing aids are rated for sweat and light moisture but not for immersion or prolonged exposure to water. If you shower, swim, or work in a wet environment, remove your hearing aids beforehand. If you sweat heavily during exercise, wipe the hearing aids with a dry cloth when you finish and store them in a cool place with the battery door open.

Keep a small container of silica gel or a hearing aid dryer in your bedroom so you can dry your hearing aids every night. This routine maintenance removes the moisture that builds up from daily wear and extends the life of the device. Many people who wear hearing aids do this as a matter of course, the same way they charge their devices.

Frequently Asked Questions

How long can a hearing aid stay wet before it is ruined?

Damage can begin within hours, but most hearing aids survive a few hours of moisture if you dry them promptly. The risk increases sharply after 12 hours. If you dry the hearing aid within 4 to 6 hours of getting it wet, the chances of full recovery are high. After 24 hours, internal corrosion may have started, and recovery becomes less certain.

Can I use my hearing aid while it is drying?

No. Do not insert the battery or wear the hearing aid until it has dried completely. Powering on a wet hearing aid can cause a short circuit and permanent damage. Wait at least 8 to 24 hours depending on your drying method, then test it with the battery in before wearing it.

Will my warranty cover water damage?

Most manufacturer warranties do not cover water damage unless the hearing aid is rated as fully waterproof (which most are not). Some insurance plans or extended warranties sold by audiologists do cover accidental water damage. Check your warranty paperwork or ask your audiologist. If you are not covered, repair costs are usually your responsibility.

Is it safe to use uncooked rice if I do not have silica gel?

Yes, rice will absorb moisture, though more slowly than silica gel. The downside is that rice can leave dust or small particles inside the hearing aid. After drying with rice, gently brush the outside and battery compartment with a soft, dry cloth before reinserting the battery. Silica gel is preferable because it leaves no residue.

What if only the battery compartment got wet, not the whole device?

Remove the battery when ready and dry the compartment with a soft cloth. Leave the battery door open and let it air-dry for at least 12 hours. The battery compartment is usually sealed from the rest of the device, so localized moisture may not damage the circuitry. However, follow the same drying steps as you would for a fully wet hearing aid to be safe.