We are happy to clean and check any brand of hearing aid, and we can send aids for repair to most major manufacturers. We offer minor in-office repairs and maintenance such as tubing changes, replacing domes, wax guards, and clearing debris from microphones. Cerumen (ear wax) and moisture are primary causes of hearing aid repairs. Whistling or chirping sounds from the hearing aids may be due to cerumen blocking the ear canal, or to a poor physical fit of the hearing aids due to weight loss or changes in ear canal shape over time.